Awave transfers from the source outward in the direction of wave motion.
a. matter
b. energy
c. particles
d. the medium

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

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?

How is the ideal mechanical advantage of a wheel and axle calculated?