The smaller the resistance in an LRC circuit, the greater the resonance peak current. True False

This question can be solved using the equations of motion. There are two scenarios where the equations of motion can be used. The first scenario is the free-fall motion of the piece of bread. The second scenario is the uniformly accelerated motion of the bird.

The acceleration of the bird is  "a = 26.13 m/s²".

First, we will calculate the time taken by the bread to fall 3 m. Using the second equation of motion for this free-fall motion:

\(h = v_it + \frac{1}{2}gt^2\)

where,

h = height fall = 3 m

vi = initial velocity = 0 m/s

g = acceleration due to gravity = 9.8 m/s²

t = time taken = ?

Therefore,

\(3\ m = (0\ m/s)t+\frac{1}{2}(9.8\ m/s^2)t^2\\t = \sqrt{\frac{(3\ m)(2)}{9.8\ m/s^2}}\\\\t = 0.78\ s\)

The bird took the same time to catch the bread. Now applying the second equation of motion to the bird's motion:

\(s = v_it + \frac{1}{2}at^2\)

where,

s = distance covered by the bird = 5 m + 3 m = 8 m

vi = initial velocity of the bird = 0 m/s

a = acceleration of the bird = ?

t = time taken = 0.78 s

Therefore, using these values we get:

\(8\ m = (0\ m/s)(0.78\ s)+\frac{1}{2}a(0.78\ s)^2\\\\a = \frac{16\ m}{(0.78\ s)^2}\)

a = 26.13 m/s²

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The gained altitude (h) can be found using the equation: h = vt. The airplane could gain approximately 1,848 feet of altitude in 10 minutes, neglecting air resistance.

To calculate the altitude gained by the airplane, we need to consider the power required for climbing and the time duration. The power required for climbing is given as 100 hp (horsepower) at the propeller. We can convert horsepower to watts by multiplying it by 746 (1 hp = 746 W).

First, we need to find the vertical component of the airplane's velocity. The horizontal component remains constant since the speed is constant. The vertical component can be determined using trigonometry. The vertical velocity (v) can be calculated as v = Vsin(θ), where V is the constant speed of the airplane and θ is the angle of climb.

Next, we calculate the work done (W) by the airplane during the 10 minutes. The work done is equal to the power multiplied by the time: W = P × t. Here, P is the power in watts and t is the time in seconds.

The gained altitude (h) can be found using the equation: h = vt. We substitute the calculated vertical velocity and the time duration of 10 minutes (converted to seconds) into this equation to find the altitude gained.

Converting the given values and performing the calculations, we find that the airplane could gain approximately 1,848 feet of altitude in 10 minutes, neglecting air resistance.

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Answer:

Explanation:

Store size, cost savings, and repair costs are all important financial impact. which may impact Walmart decision to switch to LED lighting.

Understanding how different components of a system or situation interact in complex and changing ways is known as financial impact. A change in the organization has an impact on other elements of the system. We can see that upgrading to LED lighting has an effect on other parts of the overall system in the Walmart scenario. Yet, the addition of LED illumination has no impact on the expenditures related to buying shop inventory or printing ads for weekly circulars. One factor that is dependent on other factors is a contingency. Managers can decide how to react to a situation by identifying critical contingencies. Walmart executives may decide that installing LED lighting in stores with less than 80,000 square feet is not cost-effective.

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There are many Autotrophs than consumers because : Autotrophs are the bases of any food chain/web

Autotrophs capture the energy required for every food chain or web from which sustains other organisms in the food chain form sunlight and chemicals. Also there is always more biomass present in the lower levels of the trophic system as biomass decreases as we move up the food chain.

Since autotrophs are producers, for a healthy food chain there would be more autotrophs than consumers.

Hence we can conclude that There are many Autotrophs than consumers because : Autotrophs are the bases of any food chain/web

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The first minimum of an a- wideslit is produced by 410-nm ultraviolet light at an angle of 11.8, and by 700-nm red light at an angle of 20.5.

The lens and cornea are impervious to light with UV wavelengths less than 360 nm. As a result, violet light, which ranges in wavelength from 360 nanometers to 400 nanometers, is the best light for controlling myopia from both an efficacy and safety perspective.

d

sin

θ

=

n

λ

2

(

sin

θ

)

=

(

1

)

(

410

×

10

−

9

)

sin

θ

=

410

×

10

−

9

2

=

2.05

×

10

−

7

θ

=

sin

−

1

(

2.05

×

10

−

7

)

=

1.17

×

10

−

5

Thus the angle is

1.17

×

10

−

5

.

(b.)

Given data

The width of slit is

d

=

2.00

m

.

The number of minimum is

n

=

1.

The wavelength is, \lambda =700 nm

The wavelength of violet light, which ranges from 380 to 450 nanometers, is at the higher end of the visible spectrum (in experiments, people have so far seen to 310 nm). In contrast to X-rays and gamma rays, ultraviolet light has a wavelength that is shorter than violet but greater than both of them. In general, light violet is used to compose violet items.

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By using relationship between electric potential energy, electric force, and distance the wavelength of the photon emitted during the process is 705 nm.

To solve this problem, we need to use the relationship between electric potential energy, electric force, and distance:

ΔPE = q * ΔVΔV = - ∫ E * drF = k * q1 * q2 / \(r^{2}\) where ΔPE is the change in electric potential energy, q is the charge, ΔV is the change in electric potential, E is the electric field, r is the distance between the charges, F is the electric force, k is the Coulomb constant.

We can use the electric force equation to find the initial force between the proton and the point charge:

\(F1 = k * q1 * q2 / r1^{2}F1\)

\(= 9 * 10^{9} * (1.6 * 10^{-19}) *\frac{ (8.49)}{(0.431)^{2}F1 }\)

\(= 3.67 * 10^{-8} N\) Next, we can use the work-energy principle to find the change in electric potential energy:

ΔPE = W = F1 * dΔPE

\(= (3.67 * 10^{-8}) * (1.61 - 0.431)ΔPE\)

\(= 2.84 * 10^{-8} J\) Since the energy is carried off by a photon, we can use the equation: E = hc/λwhere E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

We can solve for the wavelength by rearranging the equation : We can find the energy of the photon by using the change in electric potential energy:

λ = hc/E

E = ΔPEλ = hc/ΔPEλ

\(= (6.63 * 10^{-34} J s) *\frac{(3 * 10^{8} m/s)}{(2.84 * 10^{-8} J)λ }\)

\(= 7.05 * 10^{-7} m\) or 705 nm

Therefore, the wavelength of the photon emitted during the process is 705 nm.

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The biker must convert all of his kinetic energy into thermal energy in order to come to a full stop. The work is resistive because the braking force resists movement, hence W = -10 214.4

Ours has Ek = 1/2m x v2 

Ek = 1/2mxv2

Ek = 1/2x79.8x162

Ek = 10214.4 J

As long as the forces being applied are conservative (don't rely on the route), the mechanical energy in a system stays constant, according to the rule of conservation of mechanical energy.

The combination of kinetic energy, or energy of motion, and potential energy, or energy stored in a system as a result of the arrangement of its components, is known as mechanical energy.

The mechanical energy of an item is just the product of its kinetic and potential energy. Depending on the direction and amount of the kinetic and potential energy, it can be either positive or negative.

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a. Nusselt number (Nu) represents the ratio of convective to conductive heat transfer, indicating the efficiency of convective heat transfer.

b. The Reynolds number (Re) influences the Nusselt number by determining the flow regime, with higher Reynolds numbers corresponding to higher Nusselt numbers and more efficient convective heat transfer.

a. The physical significance of the Nusselt number is that it provides information about the efficiency of convective heat transfer. A higher Nusselt number indicates that convective heat transfer is more dominant compared to conductive heat transfer. It is commonly used to analyze heat transfer in fluid flows, such as in pipes, channels, or heat exchangers.

b. The Reynolds number influences the Nusselt number because it affects the flow regime and flow behavior. In forced convection heat transfer, the Reynolds number determines whether the flow is laminar or turbulent. The transition from laminar to turbulent flow is characterized by a critical Reynolds number.

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Answer:

4

Explanation:

a=vf-v

a=20-0÷5

a=4meter per second square

Answer:

the first one

Explanation:

Answer:

Light travels at the same speed even if the light source is moving.

Explanation:

I took the test, hope this helps :)

Explanation:

wave is a disturbance that carries energy from one particle to another particle. The speed depends on:

1. The type of medium

2. The temperature of the medium

3. The energy of the wave

4. The amplitude of the wave

Answer:

i think the last 3

Explanation:

Answer:

2991.47 [cm^2]

Explanation:

To solve this problem we must perform a dimensional analysis and use the corresponding conversion values:

\(3.22[ft^{2}]*\frac{12^{2}in^{2} }{1^{2}ft^{2}} *\frac{2.54^{2}cm^{2} }{1^{2}in^{2} } \\2991.47[cm^{2}]\)

Answer: Gamma rays (violet) have the shortest wavelengths and the highest frequencies.

Explanation: The wavelength of the gamma rays is less than 0.01 nanometers. The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength.

The electromagnetic waves have the shortest wavelength and the highest frequency is Gamma rays (violet).

Gamma radiation, from gamma rays (γ), is a type of electromagnetic radiation usually produced by radioactive elements. Gamma rays, due to their high energy, are able to penetrate matter more deeply than alpha or beta radiation.

Gamma ray is a type of high frequency electromagnetic radiation usually produced by radioactive elements.

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Answer:

you didnt show a picture i need to see the problem sorry

Answer:

The Correct answer is A a taut guitar string.

Newton's law of universal gravitation doesn't say anything about the cause of gravity.

Einstein's theory of relativity does.

Displacement is negative when an object moves in the negative direction. The initial position will be further in the positive direction than the final position.

Displacement is a term used in physics to describe the change in position of an object with respect to its initial position. In other words, it is the distance and direction between an object's starting point and its end point.  To calculate displacement, you need to know the object's starting point and end point. The displacement can be positive or negative, depending on the direction of the movement.

Displacement is a vector quantity, which means that it has both magnitude (the distance between the two points) and direction (the direction from the starting point to the end point). It is often represented by an arrow, with the length of the arrow representing the magnitude of the displacement, and the direction of the arrow representing the direction of the displacement.

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The force on the cork is the weight of all the water that's directly over it. That's the water in a tall, skinny cylinder that's 2.0m long and has a base area of 2 cm^2.

Find the volume of that cylinder, use the density to find the mass of the water in that volume, then m•g to find the weight of that mass.

Answer:

3.a. 6m away

b. 3m away

Explanation:

a)

Effort = 10000N

Load=5000 N

effort distance=3 m

load distance=?

We can use the following equation to calculate the distance of the load from the fulcrum:

\(\boxed{\bold{\tt{Load * Load \:Distance = Effort * Effort \:Distance}}}\)

Plugging in the known values, we get:

\(\bold{\tt{5000 N * Load Distance = 10000 N * 3 m}}\)

dividing both side by 5000 N

\(\bold{\tt{Load\: Distance =\frac{ 10000 N * 3 m }{5000 N}}}\)

Load Distance = 6 m

Therefore, the load must be 6 meters away from the fulcrum in order for the crane to be balanced.

b)

If the load is increased to 10,000N, the effort and effort distance do not change.

Effort = 10000N

Load=10,000 N

effort distance=3 m

load distance=?

This is because the moment of the load will increase, and the moment of the effort will remain the same.

The moment of the load is calculated as follows:

\(\boxed{\bold{\tt{Load * Load \:Distance = Effort * Effort \:Distance}}}\)

Plugging value

\(\bold{\tt{10,000 N * Load Distance = 10,000 N * 3 m}}\)

dividing both side by 10,000 N

\(\bold{\tt{Load\: Distance =\frac{ 10,000 N * 3 m }{10,000 N}}}\)

New Load Distance = 3 m

Therefore, if the load is increased to 10,000N, it should be placed 3 meters away from the pivot point to balance the crane.

Answer:

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.

Explanation:

The gravitational attraction between the two objects of mass 5000000 kg each at a distance of 100 m is 0.167 N.

This is the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface

To calculate the gravitational attraction between the two objects, we use the formula below.

Formula:

Where:

Substitute these values into equation 1

Hence, the gravitational attraction is 0.167 N.

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Although many scientists contributed to the discovery of electrons, J.J. Thomson made important investigations in the late 19th century.

Cathode ray tubes, sealed glass tubes with a partial vacuum, were used by Thomson in his tests. He observed that when a high voltage was applied to the cathode (negative electrode) inside the tube, a stream of negatively charged particles was released and moved towards the positively charged anode (positive electrode).

These subatomic particles, which Thomson referred to as "corpuscles", are today more commonly referred to as electrons. Through his investigations, Thomson came to the conclusion that these particles were the basic type of negative charge found in atoms. Additionally, he found that the mass of electrons was very small compared to other known particles at the time.

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When measuring from the left side, the locations where the resultant force is applied are Xa, Xb, Xc, Xd, Xe, and Xf.

To rank these six locations, we can use the following order: Xe < Xa = Xb < Xc < Xf < Xd.

The items can be ranked from smallest to largest as follows:Xe < Xa = Xb < Xc < Xf < Xd

To rank items as equivalent, we overlap them. For this problem, it was assumed that L was equal to 1 so that real numbers could be used. Xa and Xb were found to be the same locations as in 1/2 because they are rectangles. The centroid of a triangle is 1/3L from its peak, so Xc was said to be 1/3. Since the peak is on the right-hand side this time, Xd was determined to be 2/3.

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A). To move the bar to the right with a constant speed of 6.00 m/s, we need to find the force required. The force required is the force of the magnetic field that acts on the bar. The power dissipated in the resistor is 6.98 W.

This force is given by the formula: F = BILsinθwhere,F is the force B is the magnetic field I is the current L is the length of the conductorθ is the angle between the magnetic field and the current direction Now, the current in the bar is given by: I = V/R where, V is the voltage applied across the resistor R is the resistance of the resistor Given, V = BLV/Rsinθwhere,L = 1.6 m B = 2.20 T, and R = 4.00 ?θ = 90° = π/2 radians So, V = 2.20 × 1.6 × 6.00/4.00  = 5.28 V The current in the circuit is, I = V/R = 5.28/4.00 = 1.32 A  

Therefore, the force required is: F = BILsinθ = 2.20 × 1.6 × 1.32 × 1 = 4.3872 N(b) The power dissipated in the resistor is given by: P = VI where, V is the voltage applied across the resistor I is the current in the circuit From the above calculations, V = 5.28 VI = 1.32 AP = VI = 5.28 × 1.32 = 6.98 W

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Answer:

The movement of heat from a warmer object to a cooler one is called heat transfer.

From 1859 to 1994, lacrosse was known as the only official national sport of Canada.

Lacrosse, a game with Indigenous origins, was declared the official national sport of Canada in 1859. It held this distinction until 1994. The sport has a rich history in Canada, with Indigenous communities playing it for centuries before European settlers arrived. Lacrosse symbolized a connection to Indigenous culture and traditions.

However, in 1994, the Canadian government recognized ice hockey as the official winter sport and lacrosse as the official summer sport. This change reflected the growing popularity and cultural significance of ice hockey in Canada while still acknowledging the historical importance of lacrosse.

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Answer:

Force applied

Explanation:

An object will remain at its state of rest unless a non zero for act on it

Answer:

Explanation:Digestive juices secreted by various organs such as salivary glands in the mouth, stomach, liver and pancreas help in the process of digestion of food. Saliva secreted by the salivary glands in the mouth aids in the breakdown of starch present in the food to simple sugar

A DC motor is powered with Ea = 400V, the armature resistance is Ra = 20, the torque constant of the motor is K+ = 1 Nm/A.

The load torque intercepts the motor torque in two places, only one will be positive, drop you will again need to solve = 0. d the given details are Ea = 400VRa = 20K+ = 1 Nm/A

To find; Gear ratio G required to drive this load at its maximum operating speed.

Formula used: θ=K+ * Ia The motor torque, Tm = K+ * Ia The load torque, TL = J * dw / G The armature current, Ia = (Ea - V) / Ra By equating the motor torque and load torque, we have; K+ * Ia = TL The load torque is positive, so we have;TL = J * dw / G Since the load is operating at maximum speed, d w = 0So, TL = 0 = J * 0 / G

Thus, G is not found in the equation.

So, we can conclude that G does not affect the maximum speed of the motor. The maximum speed is determined by the back EMF, Ea, and the motor constants, K+ and Ra.

So, the gear ratio G is irrelevant in determining the maximum speed of the motor.

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The change in potential energy of the Mary-Earth system is approximately 2.78601 kilojoules.

The change in potential energy can be calculated using the formula:

ΔPE = m * g * h

where:

ΔPE = change in potential energy

m = mass of the object (Mary's weight divided by acceleration due to gravity, g)

g = acceleration due to gravity (approximately 9.8 m/s²)

h = height of the flight of stairs

First, let's calculate the mass of Mary:

m = weight / g

Given that Mary weighs 505 N:

m = 505 N / 9.8 m/s²

m ≈ 51.53 kg

Next, we can calculate the change in potential energy:

ΔPE = (51.53 kg) * (9.8 m/s²) * (5.50 m)

ΔPE ≈ 2,786.01 J (joules)

To convert joules to kilojoules, we divide by 1000:

ΔPE ≈ 2.786 kJ

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