Science is to technology as select one: a. a door is to an opening. b. microwave ovens are to kitchens. c. explosions are to dynamite. d. refraction is to eyeglasses.

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?

What happens when a rubber rod is rubbed with a piece of fur?

What is friction? how does it affect the motion of an object?