A car traveling 79 km/h slows down at a constant 0.46 m/s² just by "letting up on the gas."
calculate the distance it travels during the fifth second.

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

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