Motion in a P-wave is
A) side to side.
B) transverse.
C) longitudinal.
D) up and down.
Answer: C
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If 4.0 J of work are performed in stretching an ideal spring with a spring constant (force constant) of 2500 N/m, by what distance is the spring stretched?
A) 3.2 cm B) 3.2 m C) 0.3 cm D) 5.7 m E) 5.7 cm
A mountain climber lies flat on the surface of a glacier that is inclined at 30 degrees below the horizontal. He remains stationary because he is holding onto a rope attached to a spike embedded in the ice further up slope than he is. The rope is parallel to the surface of the ice. If the force of the ice upon his body is 210N, what is the tension in the rope?
A. 121N B. 105N C. 182N D. 364N E. 242N
Scientific thinking is
A) based on everyday ideas of observation and trial-and-error experiments. B) completely different from any other type of thinking. C) a difficult process that only a handful of people can do well. D) an ancient mode of thinking first invented in Egypt.
An object is placed 40 cm in front of a lens of focal length 40 cm. A second lens is placed 17 cm beyond the first. An image forms 48 cm past the second lens. The lateral magnification of this system is
A) -2.8. B) -1.2. C) 1.2. D) 2.8. E) impossible to determine with the information given.