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The surface of the drum of a laser printer is negatively charged,except in certain "print black" regions, such as letterforms, thathave been discharged by a laser beam. Negatively charged inkparticles carrying a charge of 5.0 mC cling to the "printblack" areas but are repelled by an electric field elsewhere on the drum whose strength at the surface equals 120,000 N/C. What is the magnitude of the repelling force felt by these particles?
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
A firecracker is tossed straight up into the air. It explodes into three pieces of equal mass just as it reaches the highest point. How fast is the third piece moving
It is determined by immersing a crown in water that its volume is 26inc^3=4.2x10^-4m^3. What would its weight be if it were made of pure gold
a block having mass m= 10kg rests on a horizontal surface. Us+.4 and Uk=.2. what is the friction force if an external horizontal force of 32N is exerted on the block
Given a configuration of three charged particles such that q1= 5.30 nC at (1.50 m, 0.0 m), q2= 9.20 n C at (0.00 m, 2.00 m) and q3= -2.40 nC at the origin
You heat a 585 cm3 sample of a substance from 129°C to 283°C, Calculate the coefficient of volume expansion of this substance
A 3.83m -long coil containing 225 loops is wound on an iron core (average ?=1850?0) along with a second coil of 115 loops, Determine the mutual inductance M. (units of H)
A particle with a charge of 4.10nC is in a uniform electric field E? directed to the left, What work was done by the electric force and What is the magnitude of E
Starting from rest with an acceleration of 0.37 m/s2, he covers the same distance as the ramp does, but in one-fourth the time. Illustrate what is the speed at which the belt of the ramp is moving?
A 250 g block of wood hangs from a light string 0.78 m long. The block is shot with a bullet of mass 4.2 g, what was the velocity of the bullet just before it hit the block
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.23 10-3 g. Find the temperature inside the box
What is eccentricity of the transfer ellipse
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