Power is the rate at which you do work. You expend more power when you 1....
Power is the rate at which you do work. You expend more power when you
1. do the same work for a longer time.
2. do less work for a longer time.
3. do the same work for a shorter time.
4. do more work over a shorter distance.
5.do the same work over longer distance.
Homework Answers
We know power means ratio of work done to to time. Now power and time is inversely proportional if work done is constant. So if time will decrease power will increase.
So, expend more power when,
3. Do the same work for a shorter time.
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Power is the rate at which you do work. You expend more power
when you
1....
Power is the rate at which you do work. You expend more power when you a.do...
Power is the rate at which you do work. You expend more power when you a.do more work over a shorter distance. b.do the same work for a longer time. c.do the same work over longer distance. d.do the same work for a shorter time. e.do less work for a longer time.
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Machine A performs an amount of work, W, in a time, t, and generates a power, P Machine B performs an amount of work, 2W, in a time, 2t. What power is generated by machine B? ○ 4P O P P/2 2P QUESTION 2 10 B A man pushes a wheelbarrow at an angle of 31 0 to the horizontal (0) with a force of 217 N. If the wheelbarrow moves a distance of 34.5 m across the horizontal ground,...
When you push a door closer to the hinges, why does it open more slowly? because you are closer to the center Now choose from one of the following options Why? a) It opens slowly, because the lever arm is shorter so the torque is large b) It opens slowly because the lever am is longer so the torque is large. c It opens slowly, because the lever asi is shorter so the torque is less. Comes from 9.2 The...
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