Work-Energy Theorem: How large a net force is required to accelerate a 1600-kg SUV from rest to a speed of 25 m/s in a distance of 200 m?
A. 1600 N
B. 0 N
C. 200 N
D. 400 N
E. 2500 N
Answer: E
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A laser cannot emit more energy than is put into it. But in instances where stored energy can be released in a very short time, the laser
A) puts out more energy than is put into it. B) has a greater power output than power input. C) both of these D) neither of these
In the context of Earth's climate history, what do we mean by snowball Earth?
A) It refers to one or more deep ice ages that occurred hundreds of millions of years ago. B) This term is used to describe all the ice ages that have occurred in the past few million years. C) It refers to a time when polar regions had much more snowfall than normal. D) It is what we expect to see happen on Earth in about a billion years.
Nuclear Binding Energy: The neutral helium atom, 
He, has a mass of 4.002603 u, a neutron has a mass of 1.008665 u, a proton has a mass of 1.007277 u, and a neutral hydrogen atom has a mass of 1.007825 u. What is the binding energy of the 
He nucleus? (1 u = 931.5 MeV/c2)
A. 20.5 MeV B. 22.4 MeV C. 27.3 MeV D. 28.3 MeV E. 23.4 MeV
Our understanding of the solar system has come in a way that can best be described as:
A) constant since prehistoric times. B) slow and steady since the discovery of the telescope by Galileo. C) erratic, with spurts when new planets were found. D) steady until the last decade, when the decline in the space program slowed it a great deal. E) explosive, with us learning more in the past few decades than in all previous history.