Kepler's second law tells us that planets sweep out equal areas in equal times. If you compare the amount of area per time swept by Earth with the one of Jupiter, you would conclude:
A) They sweep the same area per time.
B) They sweep different areas per time.
C) Jupiter sweeps a larger area per time because it has much more mass than Earth.
D) Earth sweeps a larger area per time because it has much less mass than Jupiter.
B
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Which is the binary system, and what is the type, in the above figure?
a. Alcor A and B, spectroscopic
b. Alcor and Mizar, visual binary
c. Mizar A and B, visual binary
d. None of the other choices are correct.
Simple Pendulum: Two simple pendulums, A and B, are each 3.0 m long, and the period of pendulum A is T. Pendulum A is twice as heavy as pendulum B. What is the period of pendulum B?
A. T/
B. T
C. T
D. 2T
E. T/2
How do the speeds at which we are moving with Earth's rotation and orbit compare to the speeds of more familiar objects?
A) Earth's rotation carries most people around the axis faster than a commercial jet travels, and Earth's orbit carries us around the Sun faster than the Space Station orbits Earth. B) Earth's rotation carries most people around the axis at about the speed of a commercial jet, and Earth's orbit carries us around the Sun at about the speed of a military jet. C) Earth's rotation carries most people around the axis at about the speed of a car on the freeway, and Earth's orbit carries us around the Sun at about the speed of a commercial jet. D) Earth's rotation carries most people around the axis at about the speed at which the Space Station orbits Earth, and Earth's orbit carries us around the Sun at nearly the speed of light.
An 85.0-kg man climbs onto a 900-kg car with worn out shock absorbers and whose springs have an effective force constant of 125 kN/m. As he drives along, he hits a bump, and this starts the car oscillating with simple harmonic motion
What is the smallest amplitude of the oscillations that will cause him to bounce from his seat? A) 7.06 cm B) 7.73 cm C) 7.88 cm D) 8.95 cm E) 8.42 cm