While rowing in a race , an athlete uses 3960 J of energy doing work on the oars in 60.0 seconds . What is the power output of the athlete

Power = 66 Watts

Explanation:

Given the following data;

Energy = 3960 Joules

Time = 60 seconds

To find the power output;

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

Substituting into the equation, we have

Power = 66 Watts

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.