Car A rear ends Car B, which has twice the mass of A, on an icy road at a speed low enough so that the collision is essentially elastic. Car B is stopped at a light when it is struck. Car A has mass m and speed v before the collision. After the collision
a. each car has half the momentum.
b. car A stops and car B has momentum mv.
c. car A stops and car B has momentum 2mv.
d. the momentum of car B is four times as great in magnitude as that of car A.
e. each car has half of the kinetic energy.
D
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Thermal Expansion: The coefficient of linear expansion for aluminum is 1.8 × 10-6 K-1. What is its coefficient of volume expansion?
A. 9.0 × 10-6 K-1 B. 5.8 × 10-18 K-1 C. 5.4 × 10-6 K-1 D. 3.6 × 10-6 K-1 E. 0.60 × 10-6 K-1
An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its kinetic energy is a maximum?
A) at either A or B B) midway between A and B C) one-third of the way between A and B D) one-fourth of the way between A and B E) at none of the above points
During a rapid cool, liquid SiO2 solidifies into ______________because of its complex structure.
Fill in the blank(s) with the appropriate word(s).
Several paper clips dangle from the north pole of a magnet. The induced pole in the bottom of the lowermost paper clip is a
A) north pole. B) south pole. C) either of these D) neither of these