If the kinetic energy of the block is increasing, the block must be
consider the block in the process of oscillating.
a. at the equilibrium position.
b. at the amplitude displacement.
c. moving to the right.
d. moving to the left.
e. moving away from equilibrium.
f. moving toward equilibrium.

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

In a system, when potential energy decreases, then entropy also decreases. true false

Acar travels 40m in 8 seconds find the car speed