a 4kg sample of water absorbs 500 joules of energy. How much did the water temp change. The specific heat of water is 4200 J/(kg C)

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j