If a person moves an object weighting 6 newton’s over a distance of 20 meters in 60 seconds. the number 6 and 20 is described what in the formula of power. a. work done b. time interval c. power d. none of the above

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

How many times did thomas edison mess up the light bulb

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?