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A 7.1 nC charge is placed 1.7 meter from a 4.3 nC charge. Obtain the magnitude of the electrostatic force that one charge exerts on the other.
An isolated conductor of arbitrary shape has a net charge of +9.0 10-6 C. Inside the conductor is a cavity within which is a point charge q = +3.4 10-6 C. What is the charge on the cavity wall
question1prairie dogs live in underground burrows with at least two entrances. one entrance is higher above ground and
How much work is needed to move a 120-kg refrigerator.
A tennis ball (m=0.2 kilogram) is thrown a brick wall. It is traveling horizontally at 16 m/s just before hitting the wall and rebounds from the wall at 8 m/s, still traveling horizontally. Obtain the magnitude of the average force of wall on ball
A dog chasing a ball starts at rest and accelerates uniformly over a distance of 5 meters. It takes the dog 1 s to cover that first 5 m. What is the dog's acceleration, and what speed is the dog traveling when it reaches the 5 m point?
A bicycle wheel, of radius 0.31 m and mass 3.0 kg (concentrated on the rim) is rotating at 4.20 rev/s. After 42 s the wheel comes to a stop as of friction. What is the magnitude of the average torque due to frictional forces?
Two positive point charges, each 17?C , lie along the x-axis at x = -0.12m and x = +0.12m . Find the electric field at the point (0, 0.21m)
Suppose the earth were made entirely of hydrogen and oxygen, with two atoms of hydrogen for each atom of oxygen. how long could the earth produce the same luminosity as the Sun
An electric dipole of dipole moment 4.5 x 10-9 C·m is in a 250 N/C electric field, what is the potential energy
In a non-conducting region, voltmeter measurements show that the potential has a spherical symmetry, Find the differential volume in the annulus between rand r + dr
an irregular object is suspended by a wire from its center. when a torque of .14 N.m is applied, to the object, find the inertia of the object
A packing crate is placed on a 20 degree inclined plane. If the coefficient of static friction between the plane and the crate is 0.65, Explain will the crate slide down the plan
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