Alarge jet flying overhead is low enough so that a man on the ground can hear its engines. the man sees the jet before he hears the engines because a) his sight is stronger than his hearing. b) his hearing is stronger than his sight. c) the speed of light is faster than the speed of sound. d) the speed of sound is faster than the speed of light.

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600