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A thin flat nonconducting disk, with radius R_0 and uniformsurface charge density carries a total charge Q, and has a hole with a radius R_0 / 3 in its center. Use first principles to find the electric potential V at points along a line perpendicular to the disk, and passing through its center. Choose V = 0 at infinity.
A machine part rotates at an angular speed of 0.44 rad/s; its speed is then increased to 1.5 rad/s at an angular acceleration of 0.78 rad/s2. Find the angle through which the part rotates
a 4.64 kg block is on a plane inclined at 18.5 degrees with respects to the horizontal. How many forces are acting on the block
A positively charged particle of mass 6.80 10-8 kg is traveling due east with a speed of 25 m/s and enters a 0.32-T uniform magnetic field. What is the magnitude of the magnetic force acting on the particle
A crate on a motorized cart starts from rest and moves with a constant eastward acceleration of a = 2.50m/s^2. What is the instantaneous power supplied by this force
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +44.0 cm. How far behind the concave lens should the film be placed
A 200-pound boy lifts a 40-kg box off of the floor 1.3 meters in 0.7 seconds. determine Which boy is more powerful
A car travelling at 16 m/s runs out of gas while travelling up a 21 degree slope. How far up the hill would it coast before starting to roll back down.
A 2.0 microF capacitor and a 4.0 microF capacitor are connected in parallet across a 300V potential difference. Calculate the total energy stored in the capacitors
q1. a series r-l-c circuit of r 200 ohms l 0.900 h and c 2.00 uf carries an rms current of 0.250 a with the
question1a 8kg mass moves in a circular path of 4m radius on a frictionless horizontal table. it is attached to a
A solid block is attached to a spring scale. The reading on the scale when the block is completely immersed in water is 25.2 , What is the block's volume
a 100W light bulb connected to a 12.0 V source experiences a voltage surge that produces 14.0V for a moment. By what percentage does its power output increase
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