The energy released from a nuclear reaction is equal to:

a. energy associated with momentum conservation.
b. the exothermic endothermy.
c. energy associated with the change in mass.
d. the total charge involved.


c

Physics & Space Science

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Two people, one twice as massive as the other, attempt a tug-of-war with 12 m of rope on frictionless ice. After a brief time, they meet. The heavier person slides a distance of

A) 3 m. B) 4 m. C) 5 m. D) 6 m.

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Which would require the greater energy; slowing the orbital speed of a satellite so it crashes into Earth, or increasing the orbital speed so it escapes Earth?

A) slowing down B) speeding up C) same each way

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Chemically, helium is

A) an isotope. B) an element. C) a mixture. D) a solid. E) a compound.

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An expandable container holds 2.30 mole of helium, He, gas with an initial pressure of 770 kPa and an initial volume of 2.10 L. The gas expands isothermally to a final pressure of 350 kPa

How much heat is gained by the gas during this process? (R = 8.31 J/mol ? K) A) 1280 J B) 792 J C) 685 J D) 1370 J E) 1700 J

Physics & Space Science