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  76. A 200-hp engine can deliver, in SI units, an

Question :   76. A 200-hp engine can deliver, in SI units, an : 2102114

 

76. A 200-hp engine can deliver, in SI units, an average power of ____. (1 hp = 746 W)

A. 200 W

B. 74 600 W

C. 149 000 W

D. 298 000 W

77. The area under the force vs. displacement curve represents:

A. area.

B. force.

C. work.

D. coefficient of static friction.

78. A force of 100 N is applied to a 50-kg mass in the direction of motion for a distance of 6.0 m and then the force is increased to 150 N for the next 4.0 m. For the 10 m of travel, how much work is done by the varying force?

A. 1 200 J

B. 1 500 J

C. 2 400 J

D. -1 500 J

79. The net force acting on a 6.0-kg object is given by Fx = (10 - x) N, where Fx is in newtons and x is in meters. How much work is done on the object as it moves from x = 0 to x = 10 m?

A. 100 J

B. 75 J

C. 50 J

D. 25 J

80. The net force acting on a 12.6-kg object is given by Fx = (20 - x) N, where Fx is in newtons and x is in meters. How much work is done on the object as it moves from x = 0 to x = 10 m?

A. 300 J

B. 200 J

C. 150 J

D. 100 J

 

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