How do you best determine whether j/m^2 and m*s^2/n are equivalent units?
a. compare the written form of the units to see if they look the same.
b. determine if the formulas that each unit came from are the same.
c. notice that one unit contains joules and the other newtons.
d. express them both in terms of si base units.

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

If the area of a square has increased by a factor of 16, by how much has each side increased?