The maximum voltage across the inductor during the time when the switch is open is $V_{L,MAX(open)} = V_s$ where $V_s$ is the voltage across the source just before the switch was opened.
When the switch is open, the voltage across the inductor is $V_{L,MAX(open)} = V_s$ where $V_s$ is the voltage across the source just before the switch was opened. When the switch in an LR circuit is opened, the current through the inductor (L) abruptly changes, and the inductor voltage instantly jumps up to maintain the circuit's equilibrium. This voltage spike, or transient voltage, is due to the inductor's magnetic field collapsing, which generates a large back-emf. The inductor behaves as a current source, with its output voltage increasing to keep the current constant. This voltage can reach a high value if the inductor is big and the current through it is significant. Let's look at a simple circuit of an LR series circuit. The voltage across the inductor is defined by:$$V_L = L\frac{dI}{dt}$$where L is the inductance in henry, I is the current in amperes, and t is the time in seconds. During the time when the switch is open, the current through the circuit is zero; as a result, there is no rate of change of current, and the voltage across the inductor is constant.
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Vl, max (open) is the magnitude of the maximum voltage across the inductor during the time when the switch is open.
The maximum voltage across an inductor occurs when the switch is open and is determined by the inductance (L) and the rate of change of current (di/dt) through the inductor. This effect is known as back EMF (electromotive force). When the switch is open, the inductor starts discharging and supplying energy to the circuit. This is when the voltage across the inductor is at its maximum. Vl, max (open) is the magnitude of the maximum voltage across the inductor during the time when the switch is open. An inductor discharges in an RL circuit when the switch is open. This means that the inductor has accumulated energy in the form of a magnetic field when the switch is closed, and this energy is then released when the switch is open. The magnitude of the maximum voltage across the inductor during the time when the switch is open can be calculated using the following formula: Vl, max (open) = -IL (max) x R, where IL(max) is the maximum current in the inductor at the time when the switch is open, and R is the resistance in the circuit. Note that the negative sign indicates that the voltage is negative relative to the direction of the current flow.
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The Tacoma narrows bridge collapsed due to?
A. Refraction
B. Reflection
C. Diffraction
D. Resonance
Answer:
i think its resonance but if im wrong its my fault
Explanation:
If you were trying to get out of the way of a storm, you would need to know the speed at which it was moving.
a. true
b. false
This statement is false that If you were trying to get out of the way of a storm, you would need to know the speed at which it was moving.
How can we conclude that If you were trying to get out of the way of a storm, you would need to know the speed or the velocity at which it was moving?If you were trying to get out of the way of a storm, you would need to know the velocity at which it was moving because,
According to the definition of the speed we can state that, Speed is the time rate at which an object is moving along a path, While according to the definition of velocity we can state that, velocity is the rate and direction of an object's movement.However the mathematical formula doesn't make any difference,
\(S=\frac{d}{t}\) or \(V=\frac{d}{t}\)
d= This is the distance the storm going to cover.
t= The time within the storm going to cover the distance.
S and V is the speed and velocity of the storm respectively.
Seeing the mathematical formula we cannot make difference. But from the definition we can surely conclude that If you were trying to get out of the way of a storm, you would need to know the velocity at which it was moving. Because to get out of the way of the storm not only we have to know the path but also we have to know the storm's direction of movement.
So from the above discussion we can conclude that this statement is false.
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A glass bead charged to 3.8 nC exerts an 7.0×10-4 N repulsive electric force on a plastic bead 2.9 cm away.
What is the charge on the plastic bead?
(a) + 1.7 nC
(b) + 5.9 nC
(c) + 17 nC
(d) + 590 nC
The charge on the plastic bead is (a) + 1.7 nC
To find the charge on the plastic bead, we can use Coulomb's Law, which describes the electric force between two charged objects. The formula for Coulomb's Law is:
F = k * |q1 * q2| / r^2
where F is the electric force, k is Coulomb's constant (8.99 x 10^9 Nm²/C²), q1 and q2 are the charges of the two objects, and r is the distance between them.
We are given that the glass bead is charged to 3.8 nC (q1), the electric force (F) is 7.0 × 10^(-4) N, and the distance (r) is 2.9 cm, which we should convert to meters: 0.029 m.
We are solving for the charge on the plastic bead (q2). Rearrange the formula for q2:
q2 = (F * r^2) / (k * q1)
Now, plug in the given values:
q2 = (7.0 × 10^(-4) N * (0.029 m)^2) / (8.99 × 10^9 Nm²/C² * 3.8 × 10^(-9) C)
q2 ≈ 1.7 × 10^(-9) C
Converting back to nanocoulombs, q2 ≈ +1.7 nC. Therefore, the charge on the plastic bead is:
(a) + 1.7 nC
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Describe the changes that occur inside a helium balloon as it rises from sea level
Answer:
The balloon expands in the number of particles per cubic centimeter decreases. This happens because as it expands there is a decrease in the density of area. The Dead Sea is a solution that is so dense that you easily float on it.
Problem 10 A diffraction grating has 200 lines/mm. It is illuminated by two monochromatic sources with wavelengths ?1 400nm and ?2 :-525nm. i) Determine the separation of the second order maxima on a screen that is 2.5m from the diffraction grating. ii) Determine the highest order for which both maxima are present.
The separation of the second order maxima on the screen is 0.008 m and highest order for which both maxima are present is probably around 10.
We can use the formula for diffraction grating:
dsinθ = mλ
where d is the spacing between the grating lines, θ is the angle of diffraction, m is the order of the maximum, and λ is the wavelength of the light.
i) For the second order maximum, m = 2, and we have:
dsinθ = 2λ
The spacing between the second order maxima on the screen is given by:
y = L*tanθ
where L is the distance between the grating and the screen. Substituting sinθ = m*λ/d, we have:
y = L*(mλ)/(dcosθ)
Substituting the values given, we get:
d = 1/200 mm = \(510^-^6 m\)
λ1 = 400 nm = \(410^-^7 m\)
λ2 = -525 nm = \(-5.25*10^-^7 m\)
L = 2.5 m
m = 2
For the first wavelength, we have:
sinθ1 = mλ1/d = \(2410^-^7/(510^-^6)\) = 0.16
For the second wavelength, we have:
sinθ2 = mλ2/d =\(2(-5.2510^-^7)/(510^-^6\)) = -0.21
The separation between the second order maxima on the screen is given by:
y = Ltanθ = Lsinθ/cosθ = L*sin(θ1-θ2)/cos(θ1+θ2)
Substituting the values, we get:
y = 2.5*sin(0.16 - (-0.21))/cos(0.16 + (-0.21)) = 0.008 m
So the separation of the second order maxima on the screen is 0.008 m.
ii) The highest order for which both maxima are present occurs when the separation between adjacent maxima is less than the distance between the two wavelengths. In other words, we want to find the maximum value of m such that:
(m+1)λ1 - mλ2 > λ2 - λ1
Substituting the values, we get:
\((3410^-^7) - (2*(-5.2510^-^7)) > -52510^-^9 - 400*10^-^9\)
Simplifying, we get:
\(10^-7 > -92510^-^9^2^.^1^5\)
Since the inequality is satisfied, we can say that both maxima are present for the second order.
However, since the values of the wavelengths are relatively close, we can estimate that the highest order for which both maxima are present is probably around 10.
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an ideal gas expands isothermally (t = 420 k ) from a volume of 2.00 l and a pressure of 9.8 atm to a pressure of 1.0 atm. What is the entropy change for this process?
The entropy change for this isothermal expansion of an ideal gas is approximately 45.0 J/K.
To calculate the entropy change for an isothermal expansion of an ideal gas, we will use the formula:
ΔS = nR * ln(V2/V1),
where ΔS is the entropy change, n is the number of moles of the gas, R is the universal gas constant (8.314 J/(mol K)), V1 is the initial volume, and V2 is the final volume.
First, we need to determine the number of moles of the gas using the initial conditions:
PV = nRT,
where P is the initial pressure, V is the initial volume, and T is the temperature. Rearrange to solve for n:
n = PV/(RT) = (9.8 atm)(2.00 L)/((0.0821 L atm)/(mol K)(420 K)) ≈ 1.42 mol.
Next, we need to find the final volume, V2, using the initial and final pressures:
P1V1 = P2V2,
V2 = (P1V1)/P2 = (9.8 atm)(2.00 L)/(1.0 atm) = 19.6 L.
Now, we can calculate the entropy change using the formula:
ΔS = nR * ln(V2/V1) = (1.42 mol)(8.314 J/(mol K)) * ln(19.6 L/2.00 L) ≈ 45.0 J/K.
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brainly a child on a swing set swings back and forth with a period of 3.3 s and an amplitude of 25°. what is the maximum speed of the child as she swings?
Maximum speed of the child as she swings is 2.23 m/s.
Step by Step Calculation:T=3.3 s is the oscillation's time period.
The swing's greatest angle is 25° (max).
The swing's bottom will have the following kinetic energy:
k=12mv2...........(1)
The mass in this situation is m, and the speed is v.
The potential energy change is expressed as,
∆U=mgL1-cosθmax...............(2)
Here, L is a string's length and g is the acceleration caused by gravity. L is given as,
L=gT24π2
Combine equation (1) with (2)
12mv2=mgL1-cos, maxv=2g, maxv=gT24, maxv=g2T22, maxv=9.8 m/s
22.33 m/s, 22.31 s22.31 cos25°
Therefore, the child's top speed is 2.23 m/s.
What is Oscillation ?The process of any quantity or measure fluctuating repeatedly about its equilibrium value in time is known as oscillation.A periodic change in a substance's value between two values or around its central value is another way to define oscillation.To learn more about Oscillation refer to:
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What is the approximate time of death if the body temperature was 10°C (50°F)?
If the body temperature was 10°C, the approximate time of death would be between 12 and 36 hours, depending on the surroundings and other variables.
What time does death occur?However, it's crucial to note that the time of death can be influenced by several factors like the environment, clothing, and the person's physical state. The time of death can also be estimated by measuring the body temperature, also known as algor mortis.
After death, the body temperature decreases at a rate of roughly 1.5°C per hour, though this might change depending on the surroundings and other variables. It is impossible to pinpoint the exact time of death if the body temperature was 10°C, although it may indicate that death happened several hours earlier because the body temperature will continue to drop after death.
However, other techniques, like lividity, rigor mortis, and inspection of the stomach contents, are more accurate, hence it is not advised to utilize this method alone to establish the time of death. For a more precise estimation of the time of death, a forensic specialist should be consulted.
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V02 Zone 90-100% MHR; =BPM
the neck is a
a) first class lever
b) second class lever
c) 3rd class lever
d) 4th class lever
Answer:
a) first class lever
What type of interaction allows the sidewalk to heat up and cook the egg? absorption diffraction reflection transmission
By the processes of heat transfer, the sidewalk absorbs heat by radiation and cooks the egg.
What is heat energy?Heat energy is a form of energy that is due to difference in temperature between two bodies.
Heat energy always flow from hotter to colder bodies
The processes of heat transfer include;
conductionconvectionradiationThe sidewalk absorbs heat by radiation and cooks the egg.
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Answer:
absorption
Explanation:
Explain the difference between dominant and recessive genes, and provide an example of each one.
Answer:
Dominant genes are genes that are most likely to be adapted to offspring. Recessive genes are genes that are least likely to be adapted to offspring. For example, if the father had brown eyes and the mother had green eyes, their offspring will most likely have brown eyes because brown eyes are considered dominant and more likely to happen.
Explanation:
not my answer i dont take credit
Determine whether the series is convergent or divergent. 1 + 7n Σ 57 n = 1 convergent divergent If it is convergent, find its sum. (If the quantity diverges, enter DIVERGES.) 7 4
The given series, 1 + 7n Σ 57 n = 1, is divergent because the terms in the series continue to increase without bounds, the sum of the series also increases indefinitely.
To determine the convergence or divergence of the series, we can analyze its behaviour as n approaches infinity. The series can be written as Σ(1 + 7n*57) for n = 1 to infinity. By simplifying the expression, we have Σ(399n + 1) for n = 1 to infinity.
As n increases, the summand of the series grows linearly with a coefficient of 399. Since the coefficient is nonzero and positive, the series will diverge. This means that the sum of the series will not approach a finite value as n tends to infinity.
Therefore, the given series is divergent, and we cannot find its sum. It is important to note that a divergent series does not have a finite sum. Therefore, the sum of the given series is "DIVERGES."
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El niño is a weather event that causes great changes in weather worldwide. During an el niño event, the polar jet stream shifts northward. Which change will an el niño event most likely cause?.
El niño affects the pattern of rainfall over months to seasons by redistributing heat and wind across the Pacific. As the atmosphere above the heated water surface warms, moist air rises and forms rain clouds.
Surface waters in the central and eastern Pacific Ocean become significantly warmer than usual during an El niño event. This shift is inextricably linked to the atmosphere and the winds blowing across the vast Pacific. Easterly trade winds (which blow from the Americas to Asia) weaken and can even turn westward. This allows large amounts of warm water to slosh from the western Pacific toward the Americas. It also reduces the upwelling of cooler, nutrient-rich waters from the deep, slowing or reversing ocean currents along the equator and the west coasts of South and Central America.
The air circulation above the tropical Pacific Ocean responds to this massive redistribution of ocean heat. The eastern Pacific's typically strong high-pressure systems weaken, altering the balance of atmospheric pressure across the eastern, central, and western Pacific. While easterly winds are typically dry and consistent, Pacific westerlies tend to arrive in bursts of warmer, moister air.
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the ____ metacharacter is used to allow a string to contain an alternate set of substrings.
The vertical bar (|) metacharacter is used to allow a string to contain an alternate set of substrings. It is also known as the "pipe" character and it functions as an "OR" operator in regular expressions.
This means that when the vertical bar is used between two strings, the regular expression engine will look for either one of the strings in the target string. For example, the regular expression "cat|dog" will match either "cat" or "dog" in the target string. The vertical bar is a useful tool for creating flexible regular expressions that can match different variations of a pattern.
This pattern would match any of the three colors "red", "blue", or "green" in a given string. By incorporating the "|" metacharacter, you can efficiently search for and match various substrings within a larger string, making it a powerful and versatile tool in pattern recognition and text processing tasks.
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a uniform spherical ball is set rotating about a horizontal axis with an angular speed of w0 and is placed on the floor. if the coefficient of sliding friction between the ball and the floor is uk, find the speed of the center of mass of the ball when it begins to roll without slipping
When a uniform spherical ball starts rolling without sliding, its centre of mass is moving at the speed of zero.
A rolling sphere's moment of inertia, which is defined by its mass and radius, and rotational velocity both affect how much kinetic energy it has.
The sphere cannot accelerate because of the frictional force acting in the opposite direction of the sphere's motion against the floor. Due to friction, the sphere's kinetic energy is converted to heat.
The frictional force between the sphere and the floor is equal to the sphere's moment of inertia times the angular acceleration if the angular velocity of the sphere is constant.
Since there is no angular acceleration, there is no frictional force, and the speed of the sphere's centre of mass is also zero.
Complete Question:
What is the speed of the center of mass of a uniform spherical ball when it begins to roll without slipping, given that it is set rotating about a horizontal axis with an angular speed of w0 and that the coefficient of sliding friction between the ball and the floor is uk?
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a pilot flying low and slow drops a weight; it takes 2.2 s to hit the ground, during which it travels a horizontal distance of 180 m . now the pilot does a run at the same height but twice the speed. how much time does it take the weight to hit the ground?
Time taken by the weight to hit the ground is 2.2 seconds when pilot does a run at the same height but twice the speed.
What is distance , speed and how the time taken is same in the 2nd attempt as of the first attempt?Distance is a quantity which represents the product of speed and time in a given time period.Speed is the quantity that represents the distance travelled per unit time of the motion.Here the pilot takes 2.2 second of time to hit the ground and travels the distance of 180 meters.As we know that the time taken by the free fall from same height is always same.Time taken for the weight to hit the ground would be same as of the first attempt that is 2.2 seconds.To know more about speed visit:
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Which statement is true about destructive interference of light?
A. It is the same as constructive interference.
B. It results in a brighter beam of light. C. It provides evidence of light acting as a wave.
D. It provides evidence of light acting as particles.
Answer:
C. It provides evidence of light acting as a wave.
Explanation:
Took test
Destructive interference occurs when the amplitude of the displacements when the crest of one wave meets the trough of another wave is equal to the difference in the separate magnitudes, hence option C is correct.
What is the interference of light?
Any position along the medium where the two conflicting waves have a displacement in the opposite direction will experience destructive interference.
When the phase difference between the waves is an even multiple of (180°), constructive interference happens. Example: When two speakers are placed side by side and their distance from the viewer is the same, we can experience constructive interference.
Therefore, destructive interference of light provides evidence of light acting as a wave, hence option C is correct.
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A stationary 2 kg football is kicked by a footballer, the football moves off with a velocity of 5 m/s. If the footballer is in contact with the football for 0.5 s, what is the average force applied by the footballer
on the football?
Please helppp!!!!
Answer:
F = 20 N
Explanation:
Given that,
Mass of the football, m = 2 kg
Initial speed, u = 0
Final speed,v = 5 m/s
The time of contact, t = 0.5 s
We need to found the average force applied by the footballer on the football. We can find it using the formula.
\(F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{2\times (5-0)}{0.5}\\\\F=20\ N\)
So, the required force is 20 N.
Answer:
F=20
Explanation:
f=20
Kinetic energy is the energy of an object in motion. Potential energy is the energy associated with an object
that can do work even if it isn’t doing so yet.
True
False
. The resistance of the wire in the previous question is 0.50 02. What is the current running through the wire?
The resistance of a wire has been explained in the space below
What is the resistance of a wire?The resistance of a wire is a measure of how much it resists the flow of electrical current through it. It is measured in ohms (Ω) and is influenced by several factors, including the wire's length, cross-sectional area, and material.
In general, longer wires have more resistance than shorter wires, while thicker wires have less resistance than thinner wires. The type of material used to make the wire also affects its resistance, with some materials being more conductive than others.
Resistance can be calculated using Ohm's Law, which states that resistance equals voltage divided by current (R = V/I). This means that if you know the voltage across a wire and the current flowing through it, you can calculate its resistance. Alternatively, resistance can be measured directly using a multimeter or other testing equipment.
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if the environmental lapse rate (elr) of the atmosphere surrounding a rising parcel of air is greater than the dar (i.e. >10co/1000m), then:
If the environmental lapse rate (ELR) of the atmosphere surrounding a rising parcel of air is greater than the dry adiabatic rate (DAR) of 10°C/1000m, certain conditions and phenomena can be inferred.
When the ELR is steeper than the DAR, it indicates a condition of instability in the atmosphere.
This means that the surrounding air cools at a faster rate than a rising parcel of air would if it were undergoing adiabatic cooling.
As a result, the parcel of air becomes warmer compared to its surroundings, making it less dense and causing it to continue rising.
The steep ELR exceeding the DAR signifies an environment conducive to the development of convective processes such as thunderstorms, cumulus clouds, and other forms of unstable atmospheric phenomena.
The increased lapse rate creates an environment where the parcel of air continues to rise and can reach higher altitudes, potentially leading to the formation of significant weather events and atmospheric instability.
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what properties of metals do the terms conductivity and ductility describe
Conductivity and ductility are properties of metals that determine their ability to conduct electricity and be molded into different shapes, respectively.
Conductivity refers to a metal's ability to conduct electricity. Metals are known for their high conductivity, meaning they allow electricity to flow through them easily. This property is due to the fact that metals have free electrons in their outer shell, which are free to move and carry an electrical charge. The conductivity of a metal can be affected by its temperature and impurities, as well as its atomic structure. Ductility, on the other hand, refers to a metal's ability to be stretched or drawn into a wire without breaking. This property is due to the way the atoms in a metal are arranged and the way they interact with each other. Ductile metals are malleable, meaning they can be bent, shaped, and molded without breaking. Metals with high ductility are ideal for shaping into wire, pipes, and other products that require flexibility and strength. In summary, conductivity and ductility are important properties of metals that determine their ability to conduct electricity and be shaped into various forms.
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What is the period of the microwaves with a frequency of 30,000,000,000 Hz?
a.cannot be calculated
b.0
c.a really big number
d.a really small number
Answer:
The period of a wave is the time it takes for one complete cycle of the wave to occur. It is given by the formula:
Period = 1 / Frequency
where frequency is the number of cycles per second.
Using this formula, we can calculate the period of the microwaves with a frequency of 30,000,000,000 Hz as:
Period = 1 / 30,000,000,000 Hz
Period = 3.33 x 10^-11 seconds
Therefore, the period of the microwaves with a frequency of 30,000,000,000 Hz is a really small number, which is approximately 3.33 x 10^-11 seconds. The answer is (d) a really small number.
Explanation:
write each force in cartesian vectors and determine the magnitude and angle of the resultant force. show the resultant in a sketch.
The three forces acting on the support can be expressed in Cartesian vector form. By finding the resultant force, we can determine its magnitude and direction measured clockwise from the positive x-axis.
To express the forces in Cartesian vector form, we need to break them down into their x and y components. Each force can be represented as a vector with its x-component and y-component. Once we have the vectors for all three forces, we can add them together to find the resultant force.
To determine the magnitude of the resultant force, we calculate the sum of the squares of the x-components and the sum of the squares of the y-components of the individual forces. Taking the square root of the sum of these squares gives us the magnitude of the resultant force.
The direction of the resultant force is measured clockwise from the positive x-axis. We can use trigonometric functions such as arctan or atan2 to calculate the angle between the resultant force vector and the positive x-axis. This angle gives us the direction of the resultant force.
By calculating the magnitude and direction of the resultant force, we can fully describe the net effect of the three forces acting on the support.
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2. If a plasma bubble grows by e
5
in one hour and the Rayleigh-Taylor growth rate scale height is 20 km, what is the ion-neutral collision frequency, assuming the E-Region Pederson conductivity is negligible? [Note: Y
RT
=g/(v
in
∗H),e
∧
(Y
RT
∗t)=5 ]
If a plasma bubble grows by e5 in one hour and the Rayleigh-Taylor growth rate scale height is 20 km, the ion-neutral collision frequency is approximately 9.8 × 10^(-5) Hz.
To determine the ion-neutral collision frequency, we need to calculate the growth rate of the plasma bubble using the Rayleigh-Taylor growth rate equation:
YRT = g / (vin × H)
where:
YRT is the growth rate scale height,
g is the acceleration due to gravity,
vin is the ion-neutral collision frequency, and
H is the scale height.
Given that YRT × t = 5 and H = 20 km, we can rearrange the equation to solve for vin:
YRT = g / (vin × H)
5 = g / (vin × 20 km)
Let's assume the acceleration due to gravity is approximately 9.8 m/s².
Converting the scale height from kilometers to meters:
H = 20 km = 20,000 m
Now we can substitute the values into the equation:
5 = (9.8 m/s²) / (vin × 20,000 m)
Simplifying the equation:
5 × vin × 20,000 = 9.8
100,000 × vin = 9.8
vin = 9.8 / 100,000
vin ≈ 9.8 × 10^(-5) Hz
Therefore, the ion-neutral collision frequency is approximately 9.8 × 10^(-5) Hz.
The question should be:
If a plasma bubble grows by e5 in one hour and the Rayleigh-Taylor growth rate scale height is 20 km, what is the ion-neutral collision frequency, assuming the E-Region Pederson conductivity is negligible? [Note: YRT=g/(vin×H),e∧(YRT× t)=5 ]
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Lab: Kinetic Energy What is the purpose of the lab, the importance of the topic, and the question you are trying to answer? What is your hypothesis (or hypotheses) for this experiment? What methods are you using to test this (or each) hypothesis? Section II: Data and Observations Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to relate your findings? Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descriptions)? How can you organize this date for your report? Section III: Analysis and Discussion What do the key results indicate? If you constructed graphs, what trends do they indicate in your data? Were there any problems with the experiment or the methods? Did you have any surprising results? Section IV: Conclusions What do the results tell you about your hypothesis(es)? How do the data support your claim above? If you could repeat the experiment and make it better, what would you do differently and why?
Pls hurry!!!!!!!! Worth 100 pts!
Which characteristic should a good scientific question have?
It should lead to a hypothesis that is testable.
It should have an answer that is already known.
It should not be answerable just through investigation.
It should include many variables about a wide range of topics.
The characteristic that a good scientific question should have is that it should lead to a testable hypothesis. This means that the question should be specific enough to allow for the formulation of a testable hypothesis that can be supported by empirical evidence.
What is another characteristic of a good scientific question?A good scientific question should also be relevant to the field of study and potentially contribute to our understanding of a phenomenon. The answer to the question doesn't need to be already known, and it may not be answerable just through investigation.
What is the empirical evidence?Empirical evidence is the information or data obtained through observation, measurement, and experimentation. The evidence is based on direct or indirect observations of the natural world, as opposed to assumptions, beliefs, or opinions.
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What net force would be necessary to cause a block of wood with a mass of 2.5 kg to accelerate at a rate of 3.0 m/s2
Answer:
7.5 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 2.5 kg
acceleration = 3.0 m/s²
We have
force = 2.5 × 3.0 = 7.5
We have the final answer as
7.5 NHope this helps you
In each of three trials of an investigation, a single force is applied to a mobile. Each time, the mobile acquires a different acceleration. The table
shows the relationship between the acceleration and the acting force.
Acceleration (m/s²)
Force (N)
1.2
0.7
1.6
4.8
2.8
6.4
Which phrase best describes a graph that would represent the relationship shown in the table? (1 point)
an upward-sloping line drawn on a graph with acceleration shown on the x-axis and force shown on the y-axis
a downward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the x-axis
a downward-sloping line drawn on a graph with acceleration shown on the x-axis and force shown on the y-axis
an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the x-axis
Answer: an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the X-axis
just took the test
an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the X-axis best describes a graph that would represent the relationship shown in the table
What are the features of graph ?A graph is represented as pictorial form the of data or numeric values in an organized manner which enables user to represent large amount of data in visual form.
There are 2 types of questions and the features of graphs are interpretation of given graphs or selecting a graph based on a verbal description.
The bar graphs are the most common type of graph, other graphs are dot plots, histograms, line graphs and scatterplots.
A Bar Graph is represented as the graphical display of data using rectangular bars of different parameters like heights, The structure can be represented in the y axis contains values, and the x axis contains categories or time periods.
A dot plot is a simple graphical representation which shows the frequency with which items appears in a data set and present data on the x axis.
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