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A string of 0.035 kg and a length of 4.8 m must be tightened to speed a wave pulse at a speed of 110 ms -1. An experimenter would like to create two loops with a frequency generator. What frequency must be used if the distance from the wall to the pulley is d = 1.3 meters?
A 132- (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1930. Find the acceleration of the rocket
A uniform disk has a mass of 4.6 kg and a radius of 0.2 m. The disk is mounted on frictionless bearings and is used as a turntable. What is the final angular momentum of the system
an empty rubber balloon has a mass of 0.0115 kg. the balloon is filled with helium at a density of 0.181 kgm3. at this
A television set connected to a 120 outlet consumes 73 of power. How much current flows through the television
A particle with positive charge q = 3.20e10-18 C moves with a velocity = (4i+ 4j -k ) m/s through a region where both a uniform magnetic field and a uniform electric field exist. Calculate the total force on the moving particle
Two boys, Joe and Sam, who are searching for buried treasure start underneath the same tree. Joe walks 12 m east and then 12 m north, Find the magnitude of the vector from Sam to Joe
question the work function of sodium is 2.23 ev. what is the longest wavelength that a photon may have if it is to
in a 10ft^2 room wiyh no window and no doors . The air in the room is 79% N(sub2) and 21% O(sub2). What is the weight of the air
Suppose a van de Graaff generator is turned on and a positive charge builds up on its dome. How many electrons are involved in the arcing process
A nonreflective coating (n = 1.30) covers the glass (n = 1.52) of a camera lens. determine the minimum nonzero thickness
Assume a man is 2.0 m tall. what is the smallest height a rectangular plane mirror that will allow this man to see all of himself simultaneously? Think about multiple distances from the mirror and make sure you address the Law of Reflection in the an..
An electron incident on a glass block of refractive index 1.5 emits Cerenkov radiation at an angle 45? to its direction of motion. At what speed is the electron travelling?
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