The wheelbase on a truck is 2.4 m wide and the truck's center of mass is located along the vertical centerline of the truck and 2.0 m above the bottom of the tires. The truck is going around a banked turn, when it is forced to stop
What is the maximum slope that the bank can have such that the truck will not tip over? A) 26°
B) 31°
C) 34°
D) 39°
E) 21°
B
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If the accretion disk around a black hole emits X-rays outside the event horizon, the X-rays can escape
Indicate whether the statement is true or false
A 4.0-kg block is lowered down a 37° incline a distance of 5.0 m from point A to point B. A horizontal force (F = 10 N) is applied to the block between A and B as shown in the figure. The kinetic energy of the block at A is 10 J and at B it is 20 J. How much work is done on the block by the force of friction between A and B?
A. ?58 J B. ?53 J C. ?68 J D. ?63 J E. ?47 J
Which of the following is an essential agent of the Bergeron process?
a. Wind b. Carbon dioxide c. Mixing d. Rain
Refraction occurs for both sound and light. When refraction occurs there is a change in
1) frequency. 2) wavelength. 3) speed. 4) all of the above. When sound travels faster near the ground than above, bending of sound tends to be 5) upward. 6) downward. 7) neither of these.