At room temperature, the coefficient of linear expansion for Pyrex glass is ____ that for ordinary glass
a. the same as
b. more than
c. less than
d. stronger than
c
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A dc motor is connected to a emf of 12.0 V. The resistance of its windings is 2.0 
At normal operating speed, the motor delivers 6.0 W of mechanical power. What current does it draw at normal operating speed?
A. 6.0 A B. 0.50 A C. 1.0 A D. 3.0 A
Compared to Keck, Hubble Space Telescope has:
A) better light gathering power but worse resolution B) worse resolution and light gathering power C) better magnification D) better resolution and light gathering power E) better resolution but worse light gathering power
Suppose you view the solar system from high above Earth's North Pole. Which of the following statements about planetary orbits will be true?
A) All the planets orbit counterclockwise around the Sun. B) The inner planets orbit the Sun clockwise while the outer planets orbit the Sun counterclockwise. C) All the planets except Uranus orbit the Sun counterclockwise; Uranus orbits in the opposite direction. D) The inner planets orbit the Sun counterclockwise while the outer planets orbit the Sun clockwise.
The kinetic energy of a pendulum is greatest
a. when its potential energy is greatest. b. at the top of its swing. c. at the bottom of its swing. d. when its total energy is greatest.