State the First Law of Thermodynamics
What will be an ideal response?
If U is the internal energy of an object, Q is the heat added to it, and W is the work done by the object, the first law of thermodynamics can be written as follows:
?U = Q - W.
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The largest plutons are called ______________
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Mechanical energy
a. is always the total energy of a system. b. is the sum of the energies of motion and position. c. is always conserved. d. necessarily involves gravitational potential energy.
A 3.00-kg stone is dropped from a 39.2 m high building. When the stone has fallen 19.6 m, the magnitude of the impulse it has received from the gravitational force is
a. 9.80 N s. b. 19.6 N s. c. 29.4 N s. d. 58.8 N s. e. 118 N s.
Graphite, diamond and buckminsterfullerene are different forms of the element _______
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