Energy transformations | Shorouk Shaaban

in the simple pendulum, there's an energy transformation from ...........

• potential energy into kinetic energy

• potential energy into heat energy

• kinetic energy into chemical energy

electric energy is converted into kinetic energy in

• electric lamp

• electric fan

• electric bell

in the solar cells, the solar energy is converted into................

• kinetic

• light

• electric

at which point the kinetic energy is maximum

At which point the potential energy is maximum

in the following picture, ................. energy is converted into ................ energy

• chemical to kinetic

• chemical to electric

• light to chemical

calculate the mechanical energy of a moving body, whose potential energy is 2000 joules and its kinetic energy is 100 joules.

calculate the mass of an object, its kinetic energy equals 50 joules and its speed equals 5 m/sec.