The best and most correct answer among the choices provided by your question is the third choice or letter C.
<span>The speed of sound in steel is greater than it is in air because steel is more dense than air.</span>
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Answer:
I=P/U=6/12=0.5(A)
Explanation: P=UI ( CÔNG SUẤT = HIỆU ĐIỆN THẾ NHÂN VỚI C Đ D Đ)
Answer:
0.0s
Explanation:
I got it right in acellus
Answer:
The Law of the Conservation of Energy
Explanation:
The Energy Conservation Act tells us that any form of energy changes from one form to another. And that you can never have a higher amount of energy than you originally got. That is, if you have 100 [J] of energy to be transferred as heat from one medium to another, only 100 [J] can be used to be transferred, no amount greater than this value can be transferred.
The particular study of Energy Transfer in the form of heat is important in sciences such as thermodynamics and heat transfer.
The work done by a force when moving an object is given by:
where W is the work, F is the force and d the displacement of the object.
Therefore, using
and
, we get a total work of
