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Schach [20]
3 years ago
5

We use electrical devices leopard deuce motion, light, and sound. Which aspect of energy explains why these devices are possible

?
A) Energy can’t be created
B) Energy can change from one form to another
C) Energy isn’t made of matter
D) Energy can’t be destroyed
Physics
1 answer:
poizon [28]3 years ago
3 0

Answer:

B) Energy can change from one form to another

Explanation:

It goes from electrical energy from the mains into motion, light and sound

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A-Light from the Sun reflects off the Moon as it orbits Earth

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An electronic line judge camera captures the impact of a 57.0-g tennis ball traveling at 32.2 m/s with the side line of a tennis
mote1985 [20]

Answer:

average acceleration is 1.365 × 10^{4} m/s²

Explanation:

given data

initila speed  u = -32.2 m/s

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time taken t = 0.00394 s

solution

we get here average acceleration that will be express as

v = u + at    ..........................1

put here value and we get

21.6 = -32.2 + a × 0.00394

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a = 1.365 × 10^{4} m/s²

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3 years ago
Review. An electron moves in a circular path perpendicular to a constant magnetic field of magnitude 1.00 mT . The angular momen
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The speed of an electron when it moves in a circular path perpendicular to a constant magnetic field is 8.88 x 10^7 m/s.

The angular momentum(L) of an electron moving in a circular path is given by the formula,

L = mvr ........(i)

We know that the radius of the path of an electron in a magnetic field is

r = mv/qB

Putting this value in equation (i),

L = mv x mv/qB

or L = (mv)^2/qB

Putting the given values in the above equation,

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To know more about "angular momentum", refer to the following link:

brainly.com/question/15104254?referrer=searchResults

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5 0
1 year ago
Light travels 300,000,000m/sec, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in
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3 years ago
What parts are found in an electric generator? Check all that apply.
Blizzard [7]

Answer:

an armature a permanent magnet brushes slip rings

Explanation:

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3 years ago
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