How much energy is required to increase the temperature of
2 kg of lead from 4 C to 7 C? The specific heat of lead is 128
J/kgC.
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Ответ:
Explanation:
Q=msdt
= 2 x 128 x (7-4)
=256 x 3
= 768 J
Ответ:
The Transformation
Explanation:
For example, it is easy to transform kinetic energy into sound energy, slapping, but it is difficult to transform sound energy into motion.