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Two loudspeakers in a 20'C room emit 690 Hertz sound waves along the x -axis. Determine the smallest distance between the speakers for which the interference of the sound waves is destructive?
A proton (with a rest mass m=1.67×10?27kg) has a total energy that is 4.00 times its rest energy. What is the magnitude of the momentum p of the proton
The net force acting on an object in the horizontal direction is 25 newtons, Find the angle from the horizontal in which the force is acting
Two blocks, each of mass m = 1.4 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 4.7 N, Find the frictional force acting on the upper block
A non-relativistic electron and a non-relativistic proton, of rest masses me and mp, have equal kinetic energies. What is the ratio of the de Broglie wavelength of the electron, le, to that of the proton, lp? Get an algebraic, rather than numerical, ..
hobbes pushes calvin on a sled which is traveling at a constant velocity on a flat field. the coeficient of kinetic
A gas in a cylinder is held at a constant pressure of 2.20×10^5 Pa and is cooled and compressed from 1.70m^3 to 1.40m^3. Find the amount of the heat that flowed into or out of the gas
q1. what is the frequency shift of a 68 police radar signal when it reflects off a car moving at 117? radar waves
Demonstrate that gravitational energy is not extensive: show that the gravitational energy of a sphere of radius 'r' and uniform density varies with volume V^n and find the exponent 'n'.
My clothes washer spins the wash at a speed of 833rev/min to remove the water. The drum is 21.5 inches in diameter. What is the acceleration of the clothes at the drum
Assuming that the magnetic field of the earth is like that of a short dipole buried at the center of the earth, calculate the dipole moment of the earth
Ricardo of mass 80 kilogram, and Carmelita, who is lighter, is enjoying Lake Merced at dusk in a 30 kilogram canoe. Determine what is Carmelita mass
A circular loop of radius 21 cm is located in the plane of the paper inside a homogeneous magnetic field of 0.7 T pointing into the paper, Calculate the current induced in the loop in A during that time
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