A girl runs a distance of 100 meters in 20 seconds. How long did it take the 12 girl to run the race? *

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?

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c