The Richter magnitude scale measures an earthquake's
A) frequency.
B) energy in terms of ground shaking.
C) damage.
D) all of the above
Answer: B
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In the hypothetical atomic interaction shown in figure C9.13, suppose the atoms initially are separated by a very large distance but are approaching each other with kinetic energy 
. Roughly how close will the atoms get to each other eventually?
A. r = 0
B. r = 0.05 nm
C. r = 0.2 nm
D. r = 0.4 nm
E. Other (specify)
A mine railroad car, of mass 200 kg, rolls with negligible friction on a horizontal track with a speed of 10.0 m/s. A 70. kg stunt man drops straight down a distance of 4.0 m, and lands in the car
How fast will the car be moving after this happens?
Other than radioactive decay, how can energy be released from the nucleus?
A) Nuclear fission. B) Nuclear fusion. C) Both of the above. D) Thermal decay. E) All of the above.
What is the molarity when water is added to 2 moles of sodium chloride to make 0.5 liter of solution?
A) 8 M B) 4 M C) 5 M D) 2.5 M