If the astronaut throws the tool with a force of 16. 0 n , what is the magnitude of the acceleration a of the astronaut during the throw? assume that the total mass of the astronaut after she throws the tool is 80. 0 kg.
Answers
The magnitude of the acceleration attained by the tool will be \(0.2\frac{m}{s^{2} }\)
It is given that the force is acting upon a tool that attains an acceleration. The tool has a certain mass. We know that Force is calculated by the product of mass and acceleration of the object which gives us the following equation: => F = m*a, where F = Force, m = Mass of the object, and a = acceleration attained by the object.
Sp, F = 16N, M = 80 kg, and acceleration = a
Putting these values into the Formula to calculate Force we get :
=> F = ma => 16 = 80*a => a = 16/80
=> a = 0.2
Hence, we get Acceleration a = \(0.2\frac{m}{s^{2} }\)
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Related Questions
how much moisture is removed from a mobile a/c system during a typical evacuation?
Answers
An evacuation is a process that removes air and moisture from the A/C system. The level of moisture in the system can affect its performance and cause damage to its components. Therefore, evacuating the system is a crucial step in ensuring optimal A/C performance.
During the evacuation process, a vacuum pump is used to remove the air and moisture from the system. The length of time for the evacuation process and the level of vacuum pressure used can impact the amount of moisture removed. However, on average, it is estimated that about three percent of moisture is removed during the evacuation process.
In summary, during a typical evacuation of a mobile A/C system, about three percent of moisture is removed. This process is crucial in ensuring optimal A/C performance and protecting the system from potential damage.
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A researcher is trying to identify whether household substances are basic. Which approach would BEST help the researcher
investigate whether substances are basic?
A. Test each substance with red litmus paper.
B. Test each substance with blue litmus paper.
C. Observe each substance and record its color.
D. Mix each substance with a weak base and record the results.
Answers
Answer:
a
Explanation:
because red litmus paper turn blues under base or alkaline condition
A fighter plane is descending at 30 m/s. The pilot ejects, and the ejector seat accelerates him upwards at 120 m/s2 for 2 seconds. What is his velocity at the end of the 2 seconds?
Answers
Answer:
210m/s upwards
Explanation:
u= -30m /s
a= 120m/s^2
t=2s
v=u+at
=(-30)+(120x2)
=240-30
=210m/s
4. A 2.00 kg object is accelerated uniformly from rest to 3.00 m/s while moving 1.5 m across a
level frictionless surface. Calculate the power output.
Answers
The power output of 2.00 kg object is accelerated uniformly from rest to 3.00 m/s while moving 1.5 m across a level frictionless surface is 24.09 watts.
What is power?In science, power is the time required to do work or provide energy, expressed as work done W or energy transferred divided by the time interval t - or W/t. A fixed amount of work can be done for a long time with a low-powered engine, or for a short time with a high-powered engine. The unit of power is work (or energy) per unit of time. Such as foot pounds per minute, joules (or watts) per second, and ergs per second. Force can also be expressed as the product of the force required to move an object and the object's velocity in the direction of the force. If the magnitude of the force F is measured in pounds and the velocity ν is measured in feet per minute, then the power is equal to Fν foot pounds per minute.
Given,
Mass of object (m) = 2.00 kg
Distance covered (s) = 1.5 m
Velocity of object (v) = 3.00 m/s
For calculation of acceleration:
v² = u² + 2as
3² = 0 + 2 × a × 1.5
9 = 3a
a = 2 m/s²
For calculation of time:
s = ut + ¹/₂at²
1.5 = 0 × t + ¹/₂ × 2 × t²
1.5 = t²
t = 1.22 sec.
For calculation of gravitational force:
F = mg
F = 2 × 9.8
F = 19.6 N
For calculation of work done:
W = F × s
W = 19.6 × 1.5
W = 29.4 J
For calculation of power output:
P = W/t
P = 29.4/1.22
P = 24.09 watts
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the observable universe is the same size today as it was a few billion years ago. (True or False)
Answers
Answer: False
Explanation: The size of the observable cosmos has changed during the past few billion years. Since the Big Bang, which is thought to have happened approximately 13.8 billion years ago, the observable universe has been expanding. This indicates that the observable universe has been expanding together with the distance between galaxies. The cosmos has seen phases of acceleration and slowdown in its expansion, however the rate of expansion has not always been constant. The observable universe is therefore bigger than it was a few billion years ago.
answer questions show work #3
3. Determine the value of ID and VDs for the DS following amplifier. 10 RD 10V 3KD Points 0.47μF 01 G= 0.47μF Hilt RG 1.5MO -1V N5486 VGSoff = -4V IDSS = 14mA
Answers
The given amplifier circuit is a common-source amplifier. The equivalent circuit diagram of the amplifier includes a MOSFET N5486 transistor. We can determine the drain current (ID) and drain-source voltage (VDS) using the following equations:
1. Voltage at the source terminal (VS) is calculated using Ohm's law: VS = IS x RS.2. The drain current (ID) can be calculated using the equation ID = IS (1 + GVin), where Vin is the input voltage, G is the voltage gain, and IS is the current flowing through RD.Let's calculate the values of ID and VDS:
Given:- IS = VDD / RD = 10V / 10Ω = 1A- Vin = -1V / (1.5 x 10^6Ω + 0.47μF) = -0.6666667μA (using voltage divider rule)- G = -RD / RS = -10Ω / 3kΩ = -0.003333 Calculating ID:ID = 1A (1 - 0.003333 x 0.6666667 x 10^6)≈ 0.997A = 997mACalculating VDS:VDS = VDD - IDRD= 10V - 997mA x 10Ω≈ 10V - 9.97V≈ 0.03VTherefore, the values of ID and VDS are approximately ID = 997mA and VDS ≈ 0.03V, respectively.
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why does aluminum have a greater coefficient of thermal expansion than copper
Answers
Aluminum has a greater coefficient of thermal expansion than copper due to differences in the atomic structure and bonding characteristics of the two materials.
The coefficient of thermal expansion (CTE) is a measure of how much a material expands or contracts in response to changes in temperature. It represents the fractional change in length or volume per degree Celsius (or Kelvin) of temperature change.
Aluminum and copper have different atomic structures and bonding characteristics, which contribute to their different coefficients of thermal expansion.
Atomic structure:
Aluminum has a larger atomic radius compared to copper. The larger atomic radius means that aluminum atoms are more loosely packed and have weaker interatomic bonds compared to copper. As a result, aluminum can undergo more significant atomic movement and rearrangement when subjected to temperature changes, leading to a larger expansion coefficient.
Bonding characteristics:
Copper has a more rigid and tightly bonded crystal lattice structure compared to aluminum. Copper has a face-centered cubic (FCC) crystal structure, whereas aluminum has a face-centered cubic or hexagonal close-packed (HCP) crystal structure, depending on temperature and pressure. The more rigid bonding in copper restricts the movement of atoms, resulting in a lower coefficient of thermal expansion compared to aluminum.
Overall, the atomic structure and bonding characteristics of aluminum contribute to its greater coefficient of thermal expansion compared to copper.
The greater coefficient of thermal expansion in aluminum compared to copper is primarily attributed to differences in atomic structure and bonding characteristics. Aluminum's larger atomic radius and weaker interatomic bonds allow for more significant atomic movement and rearrangement in response to temperature changes, leading to a higher coefficient of thermal expansion.
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I want to know if high school starts hard and gets easier as the year goes? in your opinion
Answers
Answer:
It depends on how much you stress I recommend starting calm!
Explanation:
Answer:
I'm a senior right now, but I think the subjects gradually get more difficult, it's not all too difficult though, it's just stressful because the amount of work your expected to finish.
Explanation:
The velocity of a particle movie along the x-axis is v(t) = t^2 - 2t, with t measured in minutes and v(t) measured in feet per minute. To the nearest foot find the total distance traveled by the particle from t = 0 to t = 3 minutes.
Answers
zero
Explanation
we know that when derivantind the position function respecto to time we got the function for velocity, so we can integrate the given function to obtain the function for velocity
hence
Step 1
a) integrate to find the function for distance travelede
\(\begin{gathered} v(t)=t^2-2t \\ integrate \\ \int(t^2-2t)\text{ dt} \\ \int(t^2-2t)\text{ dt=}\frac{t^{2+1}}{2+1}-\frac{2t^{1+1}}{2} \\ \int(t^2-2t)\text{ dt=}\frac{t^3}{3}-t^2 \end{gathered}\)so
\(\begin{gathered} d(t)=\frac{t^3}{3}-t^2+C \\ C=initial\text{ distance , so c=0} \end{gathered}\)Step 2
now,we have the functio for the distance,
a) evaluate for t=0
\(\begin{gathered} d(t)=\frac{t^3}{3}-t^2 \\ d(0)=\frac{t^{3}}{3}-t^2=\frac{0^3}{3}-0^2=0-0=0 \\ d(0)=0 \end{gathered}\)b) evaluate for t=3 minutes
\(\begin{gathered} d(t)=\frac{t^3}{3}-t^2 \\ d(3)=\frac{3^3}{3}-3^2=\frac{27}{3}-9=9-0 \\ d(3)=0 \end{gathered}\)now, find the total distance traveled by the particle from t = 0 to t = 3 minutes., subtract the positions
\(distance=\Delta d=0m-0m=0m\)so, the total displacement would be zero,but :
the particle actually travels ,it start in negative direction,and then it moves to positive direction, after 3 minutes the particle is in the same place
so, the answer is zero
13. If a 40,000g cannon ball is 35m above the Earth's surface, how much potential energy does the cannon
ball have?
Answers
Answer:
PE = 13734 Joules
Step-by-step explanation:
Formula: PE = m * g * h
Givens
m = 40000 grams
m = 40000 grams * 1kg/1000 grams = 40 kg
g = 9.81
h = 35 m
PE = 40 * 9.81 * 35
PE = 13734 Joules
A jetliner, traveling northward, is landing with a speed of 61 m/s. Once the jet touches down, it has 715 m of runway in which to reduce its speed to 6.2 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to be northward).(Answer in m/s^2, please explain solution)
Answers
The magnitude of the average acceleration is approximately\(-2.57 m/s^2\)(\(2.57 m/s^2\)), and its direction is southward. The negative sign indicates that the average acceleration is directed opposite to the initial velocity.
To find the average acceleration of the plane during landing, we can use the following formula:
Average acceleration = (change in velocity) / (time taken)
Here, the change in velocity is the difference between the initial velocity and the final velocity, and the time taken is the distance covered divided by the average speed.
Given:
Initial velocity (u) = 61 m/s (northward)
Final velocity (v) = 6.2 m/s (northward)
Distance covered (s) = 715 m
Change in velocity = v - u = 6.2 m/s - 61 m/s = -54.8 m/s (negative sign indicates the change is in the opposite direction)
Time taken (t) = s / average speed
Average speed = (u + v) / 2 = (61 m/s + 6.2 m/s) / 2 = 67.2 m/s / 2 = 33.6 m/s
Plugging the values into the equation:
Average acceleration = (-54.8 m/s) / (715 m / 33.6 m/s)
Simplifying:
Average acceleration ≈ -54.8 m/s / 21.30 s ≈ \(-2.57 m/s^2\)
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Need help ASAP
Thankss + BRAINLIST only for correct answers
1.Which of the following statements about light waves is true? check all correct answers
A.They come from sources across space
B.They travel in a straight line from their source
C.They can travel through any type of material
D.They can be reflected by some types of material
2.Transparent allows some light through
A.True
B.false
Answers
Answer:
A, B and D
2. A
Explanation:
1.Which of the following statements about light waves is true? check all correct answers
A.They come from sources across space reason is that a light can travels form its source and its moves across the space
B.They travel in a straight line from their source reason is that the type of light that undergo these is called parallel ray of light
C.They can travel through any type of material reason not all materials light can penetrate through e.g wall
D.They can be reflected by some types of material reason is that some materals reflect light rays e.g polished mirror
Calculate the average velocity of object over the first 10 seconds of the trip
Answers
Answer:
in order to find the average velocity use change in Displacement / change in time?
Explanation:
A car drives 75 miles off a cliff. What is the cars horizontal speed just before it hits the ground question
Answers
What is the relationship between the mass and the density of an object with the same volume?
Answers
Answer:
Density is mass per unit volume.
The relationship between density and volume is directly proportional
Hai điện tích +q và -q (q>0) đặt tại hai điểm a và b với AB=a, M là một điểm nằm trên đường trung trực của AB cách AB một đoạn x
1)Xác điện vecto cường độ điện trường tại M 2)Xác định x để cường độ điện trường tại M cực đại, tính giá trị đó
Answers
To test the hypothesis that the population mean mu=3. 6, a sample size n=14 yields a sample mean 4. 007 and sample standard deviation 0. 607. Calculate the p-value and choose the correct conclusion
Answers
The P value for the given data set is 25127. For finding P value, we have to must find the Z value.
How to get the z scores?If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.
The Z value is calculated as;
\(Z = \dfrac{X - \mu}{\sigma})\)
Z = (X - μ) / σ
Z = (4.007 - 3.6) / 0.607
Z = 0.67051
The P value for the given data set is 25127.
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are same side exterior angles congruent or supplementary?
Answers
The same-side exterior angles are not congruent, they are supplementary. The same side exterior angles are formed and they have a sum of 180 degrees.
What is meant by congruence?Congruent refers to having the same precise size and shape. Even if we flip, turn, or rotate the forms, their shape and size need to remain constant. If it is possible to superimpose one geometric figure onto the other such that they correspond throughout, then the two are said to be congruent, or to be in the relation of congruence.
In general relativity, a congruence (more precisely, a congruence of curves) is the collection of integral curves of a (never vanishing) vector field in a four-dimensional Lorentzian manifold that is used to physically represent spacetime.
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Hey can anyone pls pls pls answer dis i rlly need it i only need the conclusion!!
Answers
Explanation:
since oil needs more boiling time and a higher boiling temperature the oil would have to be in the pot longer than the water if it needs to be boiled longer that is why the blue line for oil temp. is significantly higher than that of the water temp.
What happens to the electric force between two particles if the distance
between them is doubled?
A. It decreases to half the original force.
B. It increases to twice the original force.
C. It increases to 4 times the original force.
D. It decreases to 1/4 of the original force.
Answers
Answer:
D.
Explanation:
Force and distance are inversely related, so a greater distance results in a weaker force.
three forces act on an object. two of the forces are at an angle of to each other and have magnitudes 25 n and 12 n. the third is perpendicular to the plane of these two forces and has magnitude 4 n. calculate the magnitude of the force that would exactly counterbalance these three forces.
Answers
To calculate the magnitude of the force that would exactly counterbalance these three forces, we need to use the principle of vector addition. This involves combining the three forces vectorially to find the net force acting on the object.
First, we need to find the resultant of the two forces that are at an angle of 90 degrees to each other. This can be done using the Pythagorean theorem:
Resultant = √(25² + 12²) = √(625 + 144) = √769 = 27.74 N
Next, we need to find the net force acting on the object by adding the third force (4 N) to the resultant of the first two forces (27.74 N).
Net force = 4 N + 27.74 N = 31.74 N
Therefore, the magnitude of the force that would exactly counterbalance these three forces is 31.74 N.
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Which one of the following instrument is most suitable for measuring thickness of
the physics book?
A. Meter rule ⃝ B. Vernier calipers ⃝
C. Measuring tape ⃝ D. Screw gauge ⃝
Answers
The most suitable instrument for measuring the thickness of a physics book is B. Vernier calipers, as they provide a higher degree of accuracy and precision compared to the other options.
One of the key advantages of Vernier calipers is their ability to provide measurements with a high level of precision. The Vernier scale allows for measurements to be read to a fraction of the smallest division on the main scale, significantly increasing the accuracy of the measurement.
This is especially useful when dealing with objects that have small dimensions or require precise measurements, such as the thickness of a book.
Furthermore, Vernier calipers often have a fine adjustment mechanism that enables the user to ensure a tight fit around the object being measured, minimizing any potential errors due to play or movement. This feature contributes to the overall accuracy of the measurements.
In comparison to other measuring instruments, such as a ruler or a tape measure, Vernier calipers provide a greater level of precision. Rulers, for example, typically have larger increments and are better suited for measuring longer distances rather than small thicknesses.
Tape measures, on the other hand, can be flexible and might not provide the same level of accuracy as Vernier calipers, especially when measuring thin objects.
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2. An airboat with mass 3.50 x 102 kg, including the passenger, has an engine that produces a net horizontal force of 7.70 x 102 N, after accounting for forces resistance. a. Find the acceleration of the airboat b. Starting from rest, how long does it take the airboat to reach a speed of 12.0 m/s
Answers
The acceleration of the airboat is 2.2m/s^2 and starting from rest, it take the airboat to reach a speed of 12.0 m/s is 5.45s
Given mass of airboat (m) = 3.50 x 10^2kg
horizontal force of engine (F) = 7.70 x 10^2N
We know that from newtons laws of motion Force = mass x acceleration such that F = ma
(a) Now a = F/m = 7.70 x 10^2 / 3.50 x 10^2 = 2.2m/s^2
(b) Initial speed of airboat (u) = 0m/s
final speed (v) = 12m/s
We have acceleration a = 2.2m/s
Then we have another newtons law as: v = u+ at where t is the time taken
So t = v/a = 12/2.2 = 5.45s
Hence it takes to reach 5.45s a speed of 12m/s
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A ball, of mass 0.1 kg, is dropped from a height of 12 m, What is its momentum when it stikes the ground, in kg m/s?
Answers
The momentum of a ball that has a mass of 0.1 kg when it strikes the ground after being dropped from a height of 12 m can be calculated using the formula p = mgh. Here, m represents the mass of the object, g represents the acceleration due to gravity, and h represents the height from which the object was dropped.
The acceleration due to gravity is a constant value of \(9.8 m/s^2\). Therefore, substituting the given values into the formula, we get:
\(p = mgh = 0.1 kg \ x \ 9.8 m/s^2\ x \ 12 m \\= 11.76 kg m/s\\\)
Therefore, the momentum of the ball when it strikes the ground is 11.76 kg m/s.
To summarize, the momentum of a ball with a mass of 0.1 kg when it strikes the ground after being dropped from a height of 12 m is 11.76 kg m/s. This can be calculated using the formula p = mgh, where m represents the mass of the object, g represents the acceleration due to gravity, and h represents the height from which the object was dropped.
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A kidney is approximately ______ centimeters long, 6 centimeters wide, and 3 centimeters thick.
Answers
When a star is so dense that its atoms have their electrons smashed in toward the nucleus (resulting in densities about a million times greater than water), the resulting material is called ________.
Answers
When a star is so dense that its atoms have their electrons smashed in toward the nucleus (resulting in densities about a million times greater than water), the resulting material is called a Neutron star.
What is Star?Stars are present in the galaxy that have the ability to generate their own light. They are both quite hot and very huge.
They are largely formed of hydrogen, with a trace of helium thrown in for good measure.
The sun is also a star, and its energy and light play an important part in the survival of all kinds of life on Earth.
When a star is so dense that its atoms have their electrons smashed in toward the nucleus (resulting in densities about a million times greater than water), the resulting material is called a Neutron star.
Hence the correct answer is a neutron star.
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light is made of electrons moving at a velocity of 3x10^8 m/s
Answers
The statement "light is made of electrons moving at a velocity of 3x\(10^{8}\) m/s" is incorrect. Light is actually made of electromagnetic waves that travel at the speed of light.
Light is a form of electromagnetic radiation that consists of oscillating electric and magnetic fields. These fields are perpendicular to each other and to the direction of propagation of the wave. Light can travel through a vacuum, which means that it does not require a medium to propagate.
The speed of light in a vacuum is exactly 299,792,458 meters per second, which is often rounded up to 3x\(10^{8}\) m/s. However, it is important to note that light is not made up of electrons moving at this velocity. Instead, it is a self-propagating wave that does not involve the movement of any particles.
The speed of light is one of the fundamental constants of the universe, and it plays a crucial role in many areas of physics and engineering. Its properties have been extensively studied and measured, and it is a key parameter in the theory of relativity. Therefore, it is important to have an accurate understanding of what light is and how it behaves, rather than relying on incorrect statements or misconceptions.
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Determina la presión que ejercen los patinadores sobre el hielo, teniendo en cuenta que la cuchilla del patín mide 30cm de largo y su grosor es de 5mm, y que el peso de las dos personas es 120kg
Answers
Answer:
La presión que los patinadores ejercen sobre el hielo es 7,848,000 Pa
Explanation:
Los parámetros dados de los patinadores en la pala son;
La longitud de la hoja en el patín, l = 30 cm = 0.03 m
El espesor de la hoja, t = 5 mm = 0,005 m
El peso de las dos personas, m = 120 kg
Suponiendo que la sección transversal de la cuchilla sobre el hielo es rectangular, tenemos;
A = l × t
∴ A = 0,03 m × 0,005 m = 0,00015 m²
La fuerza de peso de los dos patinadores, W = m × g
Dónde;
g = La aceleración debida a la gravedad ≈ 9,81 m / s²
m = La masa de los dos patinadores = 120 kg
∴ W = 120 kg × 9,81 m / s² = 1,177,2 N
Presión, P = Fuerza, F/(Área, A)
∴ P = (1.177,2 N) / (0.00015 m²)= 7,848,000 Pascals
La presión que los patinadores ejercen sobre el hielo., P = 7,848,000 Pascals
if a student used a metal that was wet, would the resulting measured value of the specific heat capacity be too high or too low? explain.
Answers
If a student used a wet metal to measure its specific heat capacity, the resulting measured value would be too high.
The specific heat capacity of a material refers to the amount of heat energy required to raise the temperature of a unit mass of the material by a certain amount. When a metal is wet, it means that it has absorbed some amount of water, which can affect the measured value of its specific heat capacity.
Water has a higher specific heat capacity compared to most metals. When the metal is wet, the presence of water on its surface can lead to an increased thermal conductivity between the metal and the surrounding environment. This increased thermal conductivity can result in faster heat transfer during the measurement process.
As a result, when heat is applied to the wet metal, the water on its surface will absorb the heat more readily, leading to an overall higher heat capacity measurement. The water will act as an additional heat sink, causing the measured value of the specific heat capacity to be higher than the actual value of the metal alone.
Therefore, if a student used a wet metal to measure its specific heat capacity, the resulting value would be too high due to the influence of the water's higher specific heat capacity and increased thermal conductivity.
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The gas law for an ideal at absolute temperature (in kelvins), pressure Pin atmospheres)and volume Vinters PV = ART, Where is the number of males of the - 0.0671 gal constant. Suppose that, at a certain instant, Postm and is increasing at a rate of 0.11 atm/min and verzand it decreasing at a rate of 0.27 min. Find the rate of change of with resped To time (in/min) at that instantin = 10 mo [Round your answer to four decimal places) K/min mit A
Answers
The rate οf change οf temperature with respect tο time is apprοximately -0.4223 K/min.
How to find the rate οf change οf temperature ?Tο find the rate οf change οf temperature (T) with respect tο time (t) at a certain instant, we can use the ideal gas law equatiοn PV = nRT and differentiate it with respect tο time:
PV = nRT
Taking the derivative with respect tο time:
P(dV/dt) + V(dP/dt) = nR(dT/dt)
Since we are interested in finding dT/dt, we can rearrange the equatiοn:
(dT/dt) = (P(dV/dt) + V(dP/dt)) / (nR)
Substituting the given values:
P = 7.0 atm
dV/dt = -0.17 L/min (negative sign indicates a decrease in vοlume)
dP/dt = 0.11 atm/min
n = 10 mοl
R = 0.0621 L·atm/(mοl·K)
(dT/dt) = (7.0 atm * (-0.17 L/min) + 12 L * 0.11 atm/min) / (10 mοl * 0.0621 L·atm/(mοl·K))
Calculating the rate οf change οf temperature:
(dT/dt) ≈ -0.4223 K/min
Therefοre, at that instant, the rate οf change οf temperature with respect tο time is apprοximately -0.4223 K/min.
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