All of the following best explain why the Sun is not the only source of energy except? 1.Energy can be converted into different forms.
2.There are different sources of energy such as biological and mechanical energy.
3.There are different forms of energy other than light energy.
4.Energy can be created and destroyed.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct