Answer the following statement(s) true (T) or false (F)
One can convert work to heat (the reverse of what a heat engine does) with perfect efficiency.
TRUE
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Explain the history of atoms in your body
What will be an ideal response?
A 10-m plank is being moved by rolling it over two cylindrical logs placed 2 m from either end of the plank. As the plank is pushed, the logs roll on the ground without slipping, and they do not slip with respect to the plank
How far can the plank be moved before the rear log reaches the end of the plank?
If you want to store 2.0 mJ of energy in a 10-?F capacitor, how much potential do you need to put across it?
A) 5.0 V B) 10 V C) 15 V D) 20 V
As a 3.0-kg bucket is being lowered into a 10-m deep well, starting from the top, the tension in the rope is 19.6 N. The acceleration of the bucket will be:
a. 6.5 m/s2 downward. c. zero. b. 9.8 m/s2 upward. d. 3.3 m/s2 downward.