How much work is done by a 32 n force pushing a pencil 0.43 m?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

Which sound characteristic is not affected by the relative motion of an object