A carnival Ferris wheel has a 15-m radius and completes five turns about its horizontal axis every minute. What is the acceleration of a passenger at his lowest point during the ride?
a. 5.7 m/s2 downward
b. 4.1 m/s2 upward
c. 14 m/s2 downward
d. 4.1 m/s2 downward
e. 19 m/s2 downward
B
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Consider a closed pipe of length L. What are the wavelengths of the three lowest tones produced by this pipe?
A) 16L, 4L, L B) 4L, 2L, L C) 2L, L, L/2 D) 2L, L, 2L/3 E) 4L, 4L/3, 4L/5
Observations of the shift toward the red in stellar absorption spectra for stars in galaxies outside out own implies that
A. these stars are receding away from us. B. objects observed in the light of these stars will appear more blue than red. C. these stars are part of a rapidly spinning galaxy. D. these stars are headed toward us.
A dog is standing in the bed of a pickup truck. The bed is coated with ice, causing the force of friction between the dog and the truck to be zero. The truck is initially at rest, and then accelerates to the right, moving along a flat road
As seen from a stationary observer (watching the truck move to the right), the dog A) does not move left or right, but the back of the truck moves towards the dog. B) moves to the left, as the truck moves to the right, causing the dog to slide towards the back of the truck. C) moves to the right at the same rate as the truck, so it doesn't slide. D) moves to the right, but not as quickly as the truck is moving to the right, causing it to slide towards the back of the truck.
Website visitors spend an estimated 20-30 minutes on a webpage deciding whether the content meets their needs.
Answer the following statement true (T) or false (F)