Approximately how fast are you moving with the rotation of Earth?
A) 13,000 km/hr
B) 1,300 km/hr
C) 130 km/hr
D) 13 km/hr
E) not moving at all
B
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Light enters air from water. The angle of refraction will be
A) greater than the angle of incidence. B) equal to the angle of incidence. C) less than the angle of incidence.
When you look at yourself in a pocket mirror, and then hold the mirror farther away, you see
A) more of yourself. B) less of yourself. C) the same amount of yourself.
What is (are) the location(s) of the low tide(s) on Earth caused by the gravitation of the Moon? Give the location(s) relative to the line through the Earth's and Moon's centers, line EM
a. the point on EM on the Earth's surface nearest to the Moon b. the point on EM on the Earth's surface farthest from the Moon c. the points on the Earth's surface perpendicular to EM at the Earth's center d. the points on EM on the Earth's surface nearest to and farthest from the Moon
What is the magnitude of the magnetic field at point P in the figure if a = 2.0 cm, b = 4.5 cm, and I = 5.0 A?
a.
87 ?T, into the paper
b.
87 ?T, out of the paper
c.
0.23 mT, out of the paper
d.
0.23 mT, into the paper
e.
23 ?T, into the paper