If 1 m = 100 cm , then how many cm^2 are there in a m^2 ?? please hel[p

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.