An all-terrain vehicle of 2 000 kg mass moves up a 15.0° slope at a constant velocity of 6.00 m/s. The rate of change of gravitational potential energy with time is
a. 5.25 kW.
b. 24.8 kW.
c. 30.4 kW.
d. 118 kW.
e. 439 kW.
C
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A straight wire is bent into the shape shown. Determine the net magnetic force on the wire.
A. Zero B. IBL in the +z direction C. IBL in the ?z direction D. 1.7 IBL in the +z direction E. 1.4 IBL in the ?z direction
A heat engine absorbs 64 kcal of heat each cycle and exhausts 42 kcal. (a) Calculate the efficiency each cycle. (b) Calculate the work done each cycle
What will be an ideal response?
Carnot Engine: An ideal Carnot engine operates between a high temperature reservoir at 492 K and a river with water at 290 K. If it absorbs 4000 J of heat each cycle, how much work per cycle does it perform?
A. 1642 J B. 2358 J C. 1483 J D. 2517 J
Which of these strongly relate to a saxophone and clarinet?
A) vibrating air B) length of tube. C) both of these D) neither of these