Which of the following energy forms is associated with an object due to its position?
a. potential
b. positional
c. total
d. kinetic
Answer: a. potential
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A spherical inflated balloon is submerged in a pool of water. If it is further inflated so that its radius doubles, how is the buoyant force affected?
A) not at all B) 4 times larger C) 2 times larger D) 6 times larger E) 8 times larger
What is the explanation of Earth's magnetism?
A) Subatomic particles known as "magnetic poles" reside in the Earth, with one type of magnetic pole residing at Earth's north pole and the other type of magnetic pole residing at Earth's south pole. B) It is caused by electrically charged material circulating within Earth's hot liquid core. C) Earth's magnetism a consequence of the world's physics professors all spinning in the same direction. D) It is caused by a separation of charge within the Earth, with positive static charge residing at one of Earth's poles and negative static charge residing at the other pole. E) It is caused by charged, or ionized, particles circulating in the air above the solid Earth.
A valid unit for momentum is which of the following?
a. kg/m/s2 b. kg/m2 c. kg/m/s d. N/m
What is the internal energy of a monatomic ideal gas with pressure 6 ×105 Pa and with volume 2 m3?
a. 6 × 10^5 J b. 18 × 10^5 J c. 9 × 10^5 J d. More information is needed to find this value.