The average distance from Earth to the sun is
a. 1 ly
b. 1 million km
c. 1 million miles
d. 1 billion km
e. 1 AU
E
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Compared to a bar of pure gold, the density of a pure gold ring is
A) less. B) the same. C) slightly more. D) much more.
The open universe would be geometrically flat
Indicate whether the statement is true or false
Which statement about the motion of the planets is INCORRECT?
A) Most orbit above the Sun's equator. B) All revolutions of major planets are counterclockwise. C) The orbits of most planets are almost circular, with low eccentricities. D) Most planets move in the Earth's equatorial plane. E) Most planets rotate in the counterclockwise direction when viewed from the North.
A small airplane with a wing span of 12 m flies horizontally and due north at a speed of 60 m/s in a region where the magnetic field of the earth is 60 ?T directed 60° below the horizontal. What is the magnitude of the induced emf between the ends of the wing?
a. 50 mV b. 31 mV c. 37 mV d. 44 mV e. 22 mV