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A 5.40 nC point charge is on the x axis at x = 1.25 meter. A second point charge Q is on the x axis at -0.625 meter.
A) Find what must be the charge Q for the resultant electric field at the origin to be 50 N/C in the +x direction?
B) Find what must be the charge Q for the resultant electric field at the origin to be 50 N/C in the -x direction?
A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 4 m down a q = 28° incline. The sphere has a mass M = 5.2 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere?
two identical conducting spheres fixed in place attract each other with an electrostatic force of 0.108 n when
A duck has a mass of 2.6 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts the force of 0.12 N in a direction of 44° south of east. When these forces begin to act, the velocity..
A speaker is mounted on a vertical pole at the equal height as your ear. A second speaker is mounted on the same pole, 3.0 meter above the first speaker. Define the interference you hear standing near the pole
use the uncertainty principle to obtain the uncertainty in the momentum of a particle of mass m confined to a cube of
An ideal which and pulley system is used to haul a box of books (m=50kg) up a ramp as shown in Figure 2. The ramp makes an angle of 20degree with respect to the horizontal. What is the value of the tension in the winch rope
The mass density of crystalline carbon (diamond) is 3.50×103kg/m^3. Calculate the number density of carbon atoms per cubiccm.
cold sodium atoms near absolute zero in a state called a bose-einstein condensate can slow the speed of light from its
The blade on a table saw spins at 3450 rpm. Its diameter is 25 cm. What is the speed of a tooth on the edge of the blade
A 75 kg student runs at 5 m/s, grabs a rope,and swings out over a lake, he release the rope when his velocityis zero. What was his velocity when he hit the water
A person fishing from a pier observes that five wave crests pass by in 7.4 s and estimates the distance between two successive crests to be 4.3 m. The timing starts with the first crest and ends with the fifth. What is the speed of the wave? m/s
An air-track glider attached to a spring oscillates between the 8.00 mark and the 69.0 mark on the track. The glider completes 10.0 oscillations in 40.0. What is the maximum speed of the glider
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