A certain nucleus containing 8 protons and 7 neutrons has a density ?. Which of the following values would be closest to the expected value of the density of a nucleus having 51 protons and 69 neutrons?
A) 1.00 ?
B) 1.85 ?
C) 2.00 ?
D) 2.14 ?
E) 8.00 ?
A
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Exhibit 12-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track.
?
?
Use this exhibit to answer the following question(s).
Refer to Exhibit 12-1. What is her angular displacement (in rad) in the first 8 minutes?
A. 0 B. ? C. 4? D. 8? E. 16?
At an instant when a 4.0-kg object has an acceleration equal to 
m/s2, one of the two forces acting on the object is known to be 
N. Determine the magnitude of the other force acting on the object.
A. 2.0 N B. 13 N C. 18 N D. 1.7 N E. 20 N
Why would a decrease in the amount of ozone in the atmosphere increase the likelihood of people getting sunburn?
a. Global temperatures would rise b. More ultraviolet radiation would reach the ground c. People would be exposed to more infrared radiation d. The premise is incorrect. Ozone and sunburn are not related
Which of the following is referred to as mutual inductance?
a. Two unconnected inductors have their coils wound in the same pattern. b. Two solenoids have the same inductance. c. The changing flux from one inductor produces an emf in another inductor. d. The numerical value of one inductance is the reciprocal of another inductance in the same circuit.