Convert the following to scientific notation: 45,700. A. 4.57 × 103 B. 4.57 × 104 C. 4.57 × 10-3 D. 4.57 × 10-4
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Work formula:
F = 50N, d = 1.0 m
When you lift something straight up, the angle of the force is 90º
cos(90º) is 0, so there's no work done when you lift the microwave off the ground
F = 50N, d = 1.0 m
When you push the microwave, the angle is 0º and cos(0º) is 1. So there is work done here:
total work = 50 joules