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A closed system consists of 4 objects. Initially, object A has a charge of -200 C, object B has a charge of-4 C, object C has a charge of-181 C, and object D has a charge of 161 C. After 92 shave passed, object A has a 1 C charge, object B has a -134 C charge, and object Chas a -162 C charge. How much charge does object D have?.
A small compass is held horizontally, the center of its needle adistance of 0.120 m directly north of a long wire that isperpendicular to the earth's surface.
At time t = 0 s, a puck is sliding on a horizontal table with a velocity 3.60 m/s, 35.0° above the +x axis, What is the velocity of the puck at time t = 1.50 s
A ladder of mass 30 kg and length 5m leans against a frictionless wall. The angle between the ladder and the wall is 37 degree. what is the force between the ladder and the wall
A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.2 atm to 5.90 atm. Assume the volume of the tank and the temperature of the gas re..
Two friends hold on to a rope, one at each end, on a smooth, frictionless ice surface. What is the magnitude of the angular momentum of the system comprised of the two friends
An object acted on by three forces moves with constant velocity. Find the magnitude of the third force acting on the object
The equation of a transverse wave on a string is y = (5.7 mm) sin[(20 m-1)x + (760 s-1)t]. The tension in the string is 30 N. Find the linear density of this string in grams per meter
The gravitational acceleration on the Moon is a sixth of that on Earth. The weight of an apple is 1.03 N on Earth. What is the weight of the apple on the Moon
Blue light of frequency 6.0 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons
two spaceships pass each other travelling in opposite directions. the speed of ship b as measured by a passenger in
At a rock concert a dB meter registers 115 dB at a distance of 1.50 m from the stage, how far from the stage would you need to be to hear the concert at 90 dB
An ice skater slides (without pushing) across a frozen pond for 25.0 m before coming to a stop. If the coefficient of kinetic friction is 0.050, how fast was the skater initially moving
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