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An airplane traveling at half the speed of sound emits a sound of frequency 5.96 kHz.
(a) At what frequency does a stationary listener hear the sound as the plane approaches?
(b) At what frequency does a stationary listener hear the sound after the plane passes?
An object of mass b has a speed that changes with distance d according to v = bx^-n. What is the force as a function of d? What is the position as a function of time d(t=0)=d(initial).
Imagine two Einstein solids in thermal contact. A has 300 atoms and B has 200 atoms, and qtotal = 100, how many macrostates are there
A 800- kg car collides with a 1500- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
A toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.03m/s in a horizontal circle. If the angle the string makes with the vertical is 27°, and the tension of the string is 1N.
Oppositely charged parallel plates are separated by 4.52 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
A 4.20kg steel ball strikes a wall with a speed of 7 m/s at an angle of 60° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on bal..
Someone's weight while standing on the Earth's surface is m x g, where g has the familiar surface value of 9.80 m/s^2. Find an algebraic epxression for your weight
If the intensity of the electromagnetic radiation produced by the Sun is about 1.4 kW/m2 near the Earth, what size would a sail have to be to accelerate a spaceship with a mass of 11.9 metric tons at 1.39 m/s2
1. find the mass of 600 cubic centimeters of water.2. what is the volume of 50 kg of water.?3. what is the volume of 50
If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact?
A model rocket rises with constant acceleration to a height of 3.8 , at which point its speed is 26 m/s How much time does it take for the rocket to reach this height.
A playground merry-go-round has a radius of 4.20m and a moment of Inertia 240 kgm^2 and turns with negligible friction about a vertical axis through its center. What is the average power supplied by the child
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