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A person tuning a piano plays a note and hits a tuning fork atthe same time. The fork plays a note of 288 Hz. If 3 beats areheard when the fork is struck, what possible frequenices is the piano playing?
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
The ground state of the realistic helium atom is of course nondegenerate. However, consider a hypothetical helium atom in which the two electrons are replaced by two identical spin-one particles of negative charge. Neglect spin-dependent forces. F..
A 2.00 kg block is on an inclined plane which makes up an angle of 52 degrees to the horizontal. Find the speed of the block at the bottom of the incline plane
A bat flies toward a wall at a speed of5.5m/s. As it flies, the bat emits an ultrasonic sound wave with frequency29.0kHz. What frequency does the bat hear in the reflected wave
A small glider and a big glider both start from rest and are pushed with the same constant force F along a horizontal, frictionless surface. After each glider has traveled a distance d, which of the following statements is rue ?
A box is sliding up an incline that makes an angle of 27.7 ° regarding the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.113. The initial speed of the box at the bottom of the incline is 2.27 m/s...
A certain toaster has a heating element made of Nichrome resistance wire. What is the final temperature of the heating element
We want to launch the package in such a way that it will never come back, and when it is very far from the asteroid it will be traveling with speed 187 m/s. We have a large and powerful spring whose stiffness is 3.0 105 N/m. Explain how much mus..
a small stone is dropped from the top of a building and strikes the ground 2 seconds later. determine the height of the building and velocity of the when the stone strikes the ground
During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. What would be the time of flight
A long wire lying along the x-axiscarries a current of 4.00 A in the +x direction. There is a uniformmagnetic field present, given by B=0.003i +0.004j + 0.002k, wherei, j, k are theunit vectors along the cartesian coordinate axes') in units of Tes..
An object has a volume of 4.0m^3 and weighs 40,000 N. What will be its apparent weight under water
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