a pipe closed at one end is 100 cm long if the air in the pipe is set into vibration and the fundamental notes produced calculate the frequency of the note when the velocity of Sound is 340 m per second

When you turn on a battery-operated device, an electrical circuit is

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?