Which of the following best illustrates potential energy?
A) the wind blowing
B) water in a stream
C) steam
D) a car at the top of a hill
E) electricity
Correct Answer:
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Q27: Scientists estimate that about _ of the
Q28: The energy "lost" by a system is
Q29: Energy efficiency refers to _.
A) how much
Q30: Heat is best characterized as a kind
Q31: Which of the following represents kinetic energy?
A)
Q33: The mass number of an atom is
Q34: An ion has a net positive or
Q35: Scientists classify energy as either _.
A) chemical
Q36: What percentage of the energy used to
Q37: Isotopes are forms of an element that
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