Technician A says that you should start the lug nuts on the wheel studs by hand first and make sure the lug nuts surface matches the mating surface of the wheel. Technician B says that you should raise the vehicle so the tires are partially off the ground while tightening the lug nuts. Who is correct?

Carbon 14 is a naturally occurring stable

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?