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All simple machines provides mechanical advantage. They reduce the amount of effort needed to ___________.
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
Elaine turns on a lamp to do her homework. What did she use energy to produce?
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
When a toy car with a spring is wound up, it is ready to move. Why does this happen?
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
Define power:
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
When Rick picks up a heavy box and walks it to his car, he is doing work. Why is it work?
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
When a force is appled to raise a backpack off the floor, it is an example of _______.
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
Which of the following is an example of energy transfer or work?
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
John and MIke both weigh the same but John ran up a flight of stairs faster than Mike. Which statement is correct?
work
work
riding a bicycle
Energy is transferred
Power is the rate at which energy is converted from one form to another.
John used more power than Mike.
The spring stores energy that is released to move the car.
do work
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