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You have tuning forks for frequencies of 294 hz and 300hz. (A) What beat frequency is heard when you play both forks at the same time? (B) If you have an (unturned) string which makes for a beat frequency of 8 hz against the 294hz fork and 2hz against the 300hz fork, what frequency is the string emitting?
Imagine that a relativistic train travels past your lecture room at a speed of 0.887 c. The passengers of the train claim that when they measure the length of the train using standard meter bars found on the train, the length comes out to be 85.8 ..
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.8 N. When completely submerged in water, its apparent weight is 13.8 N. What is the volume of the object?
A small object is located 16.0 cm in front of a concave mirror with a radius of curvature of 46.0 cm. Where will the image be formed? (Enter a negative value if the image forms behind the mirror.)
to focus a camera on objects at different distances, theconverging lens is moved toward or away from the film, so a sharpimage always falls on the film. over what distance must the lens be movable
A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 4.84 m higher than A, with speed v. calculate the maximum height reached by the stone
A wheel starts from rest and rotates about its axis with constant angular acceleration. What is the angular velocity when the time t = 6.7 s
A closed system consists of 4 objects. Initially, object A has a charge of -200 C, object B has a charge of 134 C, object C has a charge of-54 C, and object D has a charge of146 C. After 219s have passed, object A has a -108 C charge, object B has a ..
A subatomic particle has an unknown lifetime τ. The particle is created at t = 0 and travels around the Earth's equator at speed 0.9896c. If the particle decays at the moment it completes one trip around the Earth, what is?
A biophysics experiment uses a very sensitive magnetic field probe to determine the current associated with a nerve impulse traveling along an axon. what is the peak current carried by the axon
An automobile of mass 1500 kg and a truck of 3500 kg collide at an intersection. What is the velocity (magnitude and direction) of the vehicles immediately after collision
An electric field applies a force of 9.11x10^-16N to an elctron emitted from the cathode-ray tube at essentially zero velocity. What is the instantaneous speed of the electron
An electric field is established in a nonuniform rod. A voltmeter is used to measure the potential difference between the left end of the rod and a point a distance x from the left end. The process is repeated, and it is found that the data are descr..
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