I need help with science, its pretty easy?

?

?Love Muffin?

New member
1. one horsepower is about the same as
a.750W.
b.1 kW.
c.750kW.
d. 750 J.

2. work input is equal to the effort force
a.times the weight of the object being moved
b. times the distance through which the force is applied.
c. divided by the weight of the object being moved.
d. divided by the distance through which the force is applied

3. work output equals the resistance force
a.times the distance through which the force is applied
b,divided by the distance through which the force is applied
c. divided by the effort force
d. times the effort force

4. the number of times a machin multiplies effort is the
a. momentum of the machine
b. mechanical advantage
c. power f the machine
d. resistance of the machine


thanks guy :)
 
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