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1.
Energy output in a device is equal to work done
by the load.
on the load.
by the effort.
on the effort.
2.
A machine is rated 5.30 W. In how many seconds will it do 212.0 J of work?
4.25 s
0.03 s
40.0 s
25.0 s
3.
An example of a simple machine is
sewing machine.
bicycle.
wheel and axle.
car.
4.
The energy output of a system is 40 J and the efficiency is 60%. Determine the energy input of the system.
50.0 J
66.7 J
24.0 J
75.4 J
5.
Energy output in a device is equal to work done
by the load.
on the load.
by the effort.
on the effort.
6.
A machine is rated 5.30 W. In how many seconds will it do 212.0 J of work?
4.25 s
0.03 s
40.0 s
25.0 s
7.
An example of a simple machine is
sewing machine.
bicycle.
wheel and axle.
car.
8.
The energy output of a system is 40 J and the efficiency is 60%. Determine the energy input of the system.
50.0 J
66.7 J
24.0 J
75.4 J
9.
The work done by a machine in moving a body is 450 J. If the force applied is 30.0 N, calculate the distance through which the body moved.
1.5 m
1.5 x 10 m
6.7 x 10-2 m
1.35 x 104 m
10.
An effort of 50 N moves a load of 100 N through a distance of 5 m. If the effort moves through a distance of 2 m, determine the work input of the device.
100 J
200 J
500 J
1000 J
11.
Using the same data, the work output is
500 J
250 J
100 J
50 J
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