How can you express
the rate of flow of people into a
stadium? How can you express
the rate of flow of charges
through a wire?

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

All of the following are part of the biosphere except

Name the intersection of plane bpq and plane cpq.