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An air-filled pipe is found to have successive harmonics at 1050Hz , 1350Hz , and 1650Hz. It is unknown whether harmonics below 1050Hz and above 1650Hz exist in the pipe. It is an open-closed pipe, so What is the length of the pipe?
An indestructible bullet 1.85 cm long is fired straight through a board that is 11.10 cm thick. The bullet strikes board with a speed of 455m/s and emerges with a speed of 279m/s. (To simplify, suppose that the bullet accelerates only while the fr..
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
Two friends, Al and Jo, have a combined mass of 164kg. At the ice skating rink, they stand close together on skates, at rest and facing each other.
A hot air balloon decends toward the ground with a velocity of (1.6 m/s). A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.0 m/s) relative to the balloon.
The latent heat of fusion
A hotel elevator ascends 170m with a maximum speed of 4.4m/s. Its acceleration and deceleration both have a magnitude of 1m/s2.
what is the minimum acceleration necessary for the plane to take flight.
Two charges Q1 = 48 muC and Q2 = 88 muC are found to have a potential energy of 43 J . What is the distance between the charges?
A person of mass 72 stands at the center of a rotating merry-go-round platform of radius 3.40 and moment of inertia 950. The platform rotates without friction with the angular velocity 0.95. The person walks radially to the edge of the platform.
Consider the driven, damped harmonic oscillaror discussed. (a) Calculate the power dissipated by the damping force. (b) Calculate the average power loss, using the fact that the average of sin2( ?t+?) over a cycle is one-half.
In outer space, far from other objects, block 1 of mass 30 kg is at position m, and block 2 of mass 1350 kg is at position m. What is the (vector) gravitational force acting on block 2 because of block 1? It helps to make a sketch of the situatio..
A 2000 kg car is slowed down uniformly from 21.0 m/s to 10.00 m/s in 3.60 s. (a) what average total force acted on the car all through that time? (b) How far did the car travel all through that time.
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