A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.
Answer:
Explanation:
Given
wavelength of emissions are


Energy is given by

where h=Planck's constant
x=velocity of Light
=wavelength of emission




frequency corresponding to this emission



Energy corresponding to 



frequency corresponding to this emission



The power of batteries in a circuit. The key functions of a battery and bulb in a circuit are explained. A battery is a source of energy which provides a push - a voltage - of energy to get the current flowing in a circuit. A bulb uses the electrical energy provided by the battery, but does not use current.
HOPE IT HELPS YOU OUT!