The distance of the Earth from the Sun is 93,000,000 miles. If there are 3.15 × 10^7 s in one year, find the speed of the Earth in its orbit about the Sun
a. 9.28 miles/s
c. 27.9 miles/s
b. 18.6 miles/s
d. 37.2 miles/s
B
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What happens to the magnitude of the magnetic field inside a long solenoid if the number of turns is doubled, with the length remaining the same?
1.It becomes four times larger. 2.It becomes twice as large. 3.It is unchanged. 4.It becomes one-half as large. 5.It becomes one-fourth as large.
The large axial tilt of Uranus is believed to have been caused by ________ catastrophic event(s), such as collision(s)
Fill in the blank(s) with correct word
A 1200-kg car is pulling a 500-kg trailer along level ground. Friction of the road on the trailer is negligible. The car accelerates with an acceleration of 1.3 m/s2. What is the force exerted by the car on the trailer?
A) 550 N B) 600 N C) 650 N D) 700 N E) 750 N
Jupiter does not have
a. a hot interior. b. convection occurring in its atmosphere. c. crustal plates on its surface. d. a dynamo effect. e. any rings.