The line representing latitude 45 degrees north runs through the state of Michigan. In Michigan, when is the Sun is directly overhead, at your zenith?
A) every day
B) only on the spring and fall equinoxes
C) only on the summer solstice, noon
D) never
D) never
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If a source of light is approaching us at 3,000 km/sec, then all its waves are:
A) blue shifted by 1%. B) redshifted by 1%. C) not affected, as c is constant regardless of the direction of motion. D) blue shifted out of the visible spectrum into the ultraviolet. E) redshifted out of the visible into the infrared.
The phase angle of an LRC series circuit with a capacitive reactance of 40 ?, a resistor of 100 ? and a certain inductor at 1000 Hz is 40.0°. What is the value of the inductance in this circuit?
A) 11.8 mH B) 124 mH C) 212 mH D) 61.9 mH E) 19.7 mH
What determines how much light bends when it enters a transparent material?
a. The angle of incidence of the light alone determines the bending. b. The index of refraction alone determines the bending. c. The type of material alone determines the bending. d. The index of refraction and the angle of incidence determine the bending. e. The state of matter of the material determines the bending.
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 counterclockwise, whereas the outer planets orbit the Sun clockwise. C) All the planets except Uranus orbit the Sun counterclockwise; Uranus orbits in the opposite direction. D) The inner planets orbit the Sun clockwise, whereas the outer planets orbit the Sun counterclockwise.