The speed of sound in air can be expressed as 331 m/sec at 0 degree celsius. it increases 0.6 m/sec for each celsius degree above zero. assume the temperature of the room is 25 degree celsius. calculate the speed of sound in m/s at this temperature.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Smallest intensity of a stimulus that you can detect 50 percent of the time is