3 years ago

What factors determine the presence of electrical energy?

Physics

1 answer:

luda_lava [24]3 years ago

8 0

One of them would be power source.

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aksik [14]

the radius is 231

Explanation:

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3 years ago

You drop a ball off the roof. It takes 2.5s for the ball to hit the bottom. How fast is it going when it hits the ground?

Anni [7]

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Explanation:

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2 years ago

Suppose a moving car has 2000 J of kinetic energy. If the carʹs speed doubles, how much kinetic energy would it then have?

Bond [772]

Answer:

option A

Explanation:

given,

Kinetic energy of the car = 2000 J

speed of the car is doubled

we know,

$KE_1 = \dfrac{1}{2}mv^2$

$2000= \dfrac{1}{2}mv^2$ ........(1)

now, speed of the car is doubled

v' = 2 v

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Hence, the Kinetic energy would be equal to 8000 J.

The correct answer is option A.

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2 years ago

If you shout into the grand canyon, your voice travels at the speed of sound (340 m/s) to the bottom of the canyon and back, and

Nostrana [21]

Given:
The speed of sound is 340 m/s
Time for the echo is 5.2 s.

Let h = the depth of the canyon.

Because the sound of your voice travels to the bottom of the canyon and back to your ear, the total distance traveled is 2h.

By definition,
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3 years ago

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d1i1m1o1n [39]

Answer:

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3 years ago