Apendulum has 445 j of potential energy at the highest point of its swing. how much kinetic energy will it have at the bottom of its swing?

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

What is the temperature in degrees celsius of a substance with a tempature of 49k