Scott attached an old-school video camera to his drown and dropped of the top of his high-rise apartment building. The drone and camera together have a mass
of 13kg (too heavy). The drone has a lifting force of 50.N. As the heavy camera
and drone fell out of the sky, it developed an air resistance force of 28N.
Calculate the magnitude of the net force on the drone/camera object as it fell.

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?