Imagine that a machine enables you to do 100 joules of work with a force input of 20 newtons. now imagine that a new machine is invented that lets you do the same amount of work with a force input of just 10 newtons. the new machine makes you how many times stronger than the old one?
a. one-half as strong
b. twice as strong
c. three times as strong
d. ten times as strong
Answers: 2
Physics, 23.06.2019 07:40
Consider lifting a box of mass m to a height h using two different methods: lifting the box directly or lifting the box using a pulley (as in the previous part). what is wd/wp, the ratio of the work done lifting the box directly to the work done lifting the box with a pulley?
Answers: 2
Physics, 23.06.2019 08:00
Agust of wind pushes a beach ball with a force of 9 newtons. the ball rolls 10 meters in 3 seconds. what is the power of the wind? 900 w 90 w 30 w 3 w
Answers: 2
Physics, 23.06.2019 16:00
Energy conservation is the process by which one kind of energy changes into a another and when energy is converted this way it's not lost or used up. true or false
Answers: 1
Imagine that a machine enables you to do 100 joules of work with a force input of 20 newtons. now im...
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