Question

please tell this and fast​

Answer 1

1. An aeroplane flying has both kinetic and potential energy because it is in motion due to which it has kinetic energy and it is flying at some height from the earth surface.
2. yes because power-energy x time work is a form of energy so if question says same amount of energy it actually means same amount of work which means Power for both girls workdonex time taken as per the question it is same for both girls hence the power is same as well.
3. The basic reason behind the dispersion of white light into seven different colours is because all the seven rays of light of different colours travel at different speeds through the glass prism.
4. A pencil placed in water appears to be bent because of refraction of light.
5. the expansion of metal will occur.