When rolled down a mountainside at 7.0 m/s, the horizontal component of its velocity vector was 1.8 m/s. What was the angle of the mountain surface above the horizontal?
A) 15° B) 75° C) 33° D) 57 °
B
Physics & Space Science
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What will be an ideal response?
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With no water and a thick, slow-moving lower atmosphere, there is little erosion on Venus
a. True b. False Indicate whether the statement is true or false
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The temperature is observed to decrease from
to 
during the evening of a very hot day. What is the relative change in the speed of sound over this time interval?
A. -15% B. -28% C. -1.5% D. -3%
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What is the current in the 10-? resistor?
?
?
A. 0.60 A B. 3.0 A C. 1.2 A D. 2.4 A E. 0.30 A
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