Which of the following is an example of the law of conservation of energy?
a. electrical energy transforming into sound energy in a speaker
b. running out of energy after exercising for a long time
c. running out of gas in a car
d. turning lights off when you aren’t using them

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

Can anybody me with this? ? (picture included.)