What is the amount of power a person uses if you raise a 200 kg piano 5m in 60 seconds?​

Explain what happens at the saturation point when adding salt to water at room temperature.

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.

1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?