This photo shows a carnival ride called a Rotor. If you had a second Rotor that spins at the same rate as the one pictured, but has a smaller diameter, the centripetal force on the people by the wall would be: (Hint: This is similar to the space station discussed at the bottom of page 168.)
a. larger than the centripetal force in the Rotor pictured.
b. the same as the centripetal force in the Rotor pictured.
c. smaller than the centripetal force in the Rotor pictured.
c
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A third quarter moon is visible
a. near the eastern horizon just before sunrise. b. near the eastern horizon just after sunset. c. in the southern sky at sunrise. d. in the southern sky at sunset. e. from sunset until sunrise.
Which method relies on the mass of a dark object revealing its presence?
A) pulsars slowing down irregularly B) temporary brightening of a distant star by a gravity lens C) asteroidal occultations D) stellar eclipses E) ring occultations
A skier leaves a ski jump with a horizontal velocity of 29.4 m/s. The instant before she lands three seconds later, the magnitudes of the horizontal and vertical components of her velocity are:
a. 0; 29.4 m/s. b. 29.4 m/s; 0. c. 29.4 m/s; 29.4 m/s. d. 29.4 m/s; 41.6 m/s. e. 41.6 m/s; 41.6 m/s.
Briefly explain why starburst galaxies appear fairly ordinary when they are observed in visible light but extraordinary when they are observed in infrared light
What will be an ideal response?