3 years ago

A flat screen tv uses 120 watts. How much energy is used up if it is left on for 15 min?

Physics

1 answer:

xeze [42]3 years ago

8 0

Answer:

Explanation:

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pishuonlain [190]

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when the ball is at its highest in the air.

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I don't know for sure, but when the ball is in the air it has potential energy to fall(or something like that).

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A simple pendulum is used to determine the acceleration due to gravity at the surface of a planet. The pendulum has a length of

SVEN [57.7K]

Answer:

Acceleration due to gravity is 20 $m/sec^2$

So option (E) will be correct answer

Explanation:

We have given length of the pendulum l = 2 m

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We know that time period of pendulum is given by

$T=2\pi \sqrt{\frac{l}{g}}$

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$0.3184= \sqrt{\frac{2}{g}}$

Squaring both side

$0.1014= {\frac{2}{g}}$

$g=19.71=20m/sec^2$

So acceleration due to gravity is 20 $m/sec^2$

So option (E) will be correct answer.

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The correct answer is D.

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If a person tries to lift a heavy box for 5 seconds and can't make it budge,the work done on the box is less than zero

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Question not making a sence, Clarify what you wana ask

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A baby carriage is sitting at the top of a hill that is 21m high. The carriage with the baby weighs 12 n. What's the potential e

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