The function of a capacitor in an electric circuit is to?A. measure the amount of current in the circuit.
B. increase circuit power
.C. allow current flow between its plates.
D. store electric charges.

Answers

Answer 1

Answer:
Well let's see:

A). No. A capacitor doesn't measure anything.

B). No. The power delivered to the circuit is determined by
      the battery or power supply and all the things in
the circuit that dissipate energy. A capacitor doesn't
do any of these things.

C). No. If any current actually flows between its plates,
   the capacitor is shot and can't do its job, and
   must be replaced.

D). Yes. A capacitor stores charges on its plates, and
electrical energy in the field between its plates.

Answer 2

Answer:

D. Stores electric charges

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The gun, mount, and train car of a railway had a total mass of 1.22 x 10^6 kg. The gun fired a projectile that was 80 cm in diameter and weighed 7502 kg. In the firing, the gun has been elevated 20 degrees above the horizontal. If the railway gun at rest before firing and moved to the right at a speed of 4.68 m/s immediately after firing, what was the speed of the projectile as it left the barrel (muzzle velocity)? How far will the projectile travel if air resistance is neglected? Assume that the wheel axles are frictionless.

Answers

1) According to the law of conservation of momentum ..
Horiz recoil mom of gun (M x v) = horiz. mon acquired by shell (m x Vh)

1.22^6kg x 5.0 m/s = 7502kg x Vh
Vh = 1.22^6 x 5 / 7502 .. .. Vh = 813 m/s

Barrel velocity V .. .. cos20 = Vh / V .. ..V = 813 /cos20 .. .. ►V = 865 m/s

2) Using the standard range equation .. R = u² sin2θ /g

R = 865² x sin40 / 9.80 .. .. ►R = 49077 m .. (49 km)

Two waves with amplitudes of 75 units and 74 units arrive at a point in a medium simultaneously. If the two waves are out of phase with each other, what is the resultant amplitude of the wave?a. 74 units

b. 1 unit

c. 75 units

d. m149 units

Answers

Answer;

1 unit

Explanation;

Interference of a wave is the property a wave that occurs when two waves travelling in the same medium meet at a point or superpose at a point in the medium.

Interference may be constructive or destructive. Constructive occurs when two identical waves travelling in the same medium in phase meet at a point. The resulting wave has twice the amplitude of the individual waves.

Destructive interference occurs when two waves travelling in the same medium meet and out of phase. The resulting amplitude will be zero if the initial waves are identical, or the difference between the amplitude of the original waves if they are not identical.

Therefore; If the two waves one with an amplitude 75 units and the other 74 units, are out of phase with each other, the resultant amplitude of the resulting wave will be 1 unit, the difference between the amplitude of the original waves.

If the two waves have the SAME FREQUENCY and are exactly
out of phase (180° apart), then the resultant wave will have the
same frequency and an amplitude of 1 unit.

If the two waves do not have the SAME FREQUENCY, then their
relative phase is meaningless.

the net electric flux through a cube of side 1 m kept in uniform electric field E= 10⁴ N/C î is a. 10⁵ N m² c⁻¹ b. 10⁴ N m² c⁻¹ c. 5 x 10⁴ N m² c⁻¹ d. zero

Answers

Answer:

To calculate the net electric flux through a cube placed in a uniform electric field, you can use Gauss's Law, which states that the electric flux (Φ) through a closed surface is equal to the electric field (E) times the surface area (A) and is also equal to the enclosed charge (Q) divided by the permittivity of free space (ε₀):

Φ = E * A = Q / ε₀

In this case, the cube has a side length of 1 meter, so its surface area (A) is 6 square meters (since there are 6 faces of a cube). The electric field (E) is given as 10⁴ N/C î, and there is no mention of any enclosed charge (Q) within the cube.

Now, calculate the electric flux:

Φ = E * A = (10⁴ N/C) * (6 m²) = 60,000 N m²/C

The unit of electric flux is N m²/C.

So, the net electric flux through the cube is 60,000 N m²/C, which is not one of the provided answer choices. However, if you convert this to the preferred unit of electric flux, which is N m² c⁻¹, you get:

60,000 N m²/C = 60,000 N m² c⁻¹

So, the answer closest to this value is (c) 5 x 10⁴ N m² c⁻¹.

Explanation:

Have great day!

The product of the frequency and the wavelength of a wave equals thea. number of waves passing a point in a second.
b. speed of the wave.
c. distance between wave crests.
d. time for one full wave to pass.

Answers

Answer:

b. speed of a wave

Explanation:

The speed of a wave is defined as the product between the wave's frequency and the wave's wavelength:

$v=\lambda f$

where

$\lambda$ is the wavelength of the wave

f is the frequency

Therefore, we see that this matches the definition listed in choice B:

b. speed of the wave.

The other options are:

a. number of waves passing a point in a second. --> frequency

c. distance between wave crests. --> wavelength

d. time for one full wave to pass. --> period

Final answer:

The product of the frequency and wavelength of a wave equals the speed of the wave. This is a fundamental principle in wave mechanics in physics.

Explanation:

The product of the frequency and the wavelength of a wave equals the speed of the wave. This is a fundamental principle in physics related to wave mechanics. To illustrate, if you have a wave with a frequency of 2 Hz and a wavelength of 3 meters, the speed of the wave would be 2 Hz * 3 m = 6 m/s.

Here, the frequency corresponds to how often the wave oscillates up and down per second, whereas the wavelength is the distance between successive wave crests. Together, they dictate the speed of the wave.

Learn more about Wave Mechanics here:

brainly.com/question/24459019

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Which item is not considered electromagnetic energy?

Answers

Sound waves are known to be the one that's not considered as a type of electromagnetic energy. As for microwaves and x-rays, they tend to share the same frequencies that can be considered as electromagnetic, and sound waves have a different frequency than them.

A ferris wheel is 20 meters in diameter and boarded from a platform that is 4 meters above the ground. The six o'clock position on the ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 4 minutes. The function h = f(t) gives your height in meters above the ground t minutes after the wheel begins to turn. What is the Amplitude?