A homogeneous cylinder is released from rest and rolls without slipping down an inclined plane inclined at 18° to the horizontal. How fast is it moving after it has rolled 2.2 m down the plane?
A)
4.3 m/s
B)
5.2 m/s
C)
3.0 m/s
D)
3.7 m/s
E)
2.6 m/s
C
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Determine (a) the temperature at the 16 equally spaced points shown in the accompanying sketch to an accuracy of three significant figures and (b) the rate of heat flow per meter thickness. Assume two-dimensional heat flow and k = 1 W/(mK).
GIVEN
A two-dimensional object with specified surface temperatures
FIND
(a) The temperature at the 16 specified locations
(b) The heat flow per meter thickness
ASSUMPTIONS
Steady state
SKETCH
Which of the following industrialized democracies is the least efficient in its use of energy?
A) Great Britain B) Japan C) Italy D) West Germany E) United States
A 15.0 kg block of ice at 0.00°C falls into Lake Superior, which is a fresh water lake. The lake water is at 10.0°C, and the latent heat of fusion for ice is 3.34 × 105 J/kg
Find the change in entropy due to the melting of the ice (a) of the block of ice, (b) of the lake, and (c) of the system consisting of the lake and the ice. (d) Is your answer to part (c) consistent with the reversibility or irreversibility of the melting process?
Which of the following is NOT true about landing pages?
A. One purpose might be to encourage website visitors to complete a sales transaction. B. They should include text that directly relates to the search query or ad the visitor uses to get to the landing page. C. Websites use landing pages to measure the effectiveness of an advertisement. D. All of the above are true.