Fig. 10-3 illustrates a simplified roller bearing. The outer hollow cylinder has a radius of 1.20 cm and is stationary. The inner cylinder has a radius of 1.00 cm and is rotating at 9.00 rpm
Between the two cylinders are several small cylinders with a radius of 0.100 cm, which roll without slipping on both the inner and outer cylinders. Only one of these cylinders is shown in the figure. How long does it take a small cylinder to complete a full revolution around the inner cylinder? A)
6.00 s
B)
14.7 s
C)
5.64 s
D)
0.542 s
E)
1.38 s
B
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A) Interstellar reddening B) A blueshift C) A redshift D) Cosmic reddening
Where are the Trojan asteroids located?
A) on orbits that cross Earth's orbit B) along Jupiter's orbit, 60° ahead of and behind Jupiter C) surrounding Jupiter D) in the center of the asteroid belt E) on orbits that cross Mars's orbit
LR Circuits: A 25-mH inductor is connected in series with a 20-? resistor through an ideal 15-V dc power supply and a switch. If the switch is closed at time t = 0 s, what is the current when t = 2.0 ms?
A. 0.40 A B. 0.50 A C. 0.60 A D. 0.70 A E. 0.80 A
Heat will not be transferred between two bodies that are at the same ________.
Fill in the blank(s) with the appropriate word(s).