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In the figure, two conducting balls of identical mass m = 15 g and identical charge q hang from non conducting threads of length L = 120 cm. If x = 6.1 cm, what is q? Since x is much smaller than L approximate sin (?) by?
Suppose a charge of -1.60 µC is at the origin and a charge of 3.30 µC is at the point (0, 3.00) m. Find the electric potential at (4.00, 0) m, assuming the electric potential is zero at infinity. V = 3 . V What is electric potential?
what will be observed on the screen? a fuzzy image is visible no image is visible on the screen a clear image slightly smaller than the original image is visible a clear image slightly larger than the original image is visible.
A disk with a rotational inertia of 5.6 kg?m2 and a radius of 0.53 m rotates on a frictionless fixed axis perpendicular to the disk, The angular acceleration of the disk in rad/s2 is:
a 100N force acts for 0.05s on a .10kg ball with an initial velocity of -20m/s, What is the final momentum of the ball
Calculate the net work done by the force of friction. A 1.50 m-long, 530 g rope pulls a 7.00 kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.90 {rm m}/{rm s}^{2}. How much force pulls forward on (a) ice (b) rop..
you are designing a delivery ramp for crates containing exercise equipment. the crates of weight 1510 n will move with
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
You are designing a hydraulic lift for an automobile garage. It will consist of two oil-filled cylindrical pipes of different diameters. What should be the diameter of the pipe under the platform
A wire with a resistance of 7.1 Ω is drawn out through a die so that its new length is 5 times its original length. Find the resistance of the longer wire, assuming that the resistivity and density of the material are unchanged.
A parallel-plate capacitor has plates with an area of 379cm2 and an air-filled gap between the plates that is2.65mm thick. The capacitor is charged by a battery to 575 V andthen is disconnected from the battery.
A tennis player swings her 1000 gram racket with a speed of 11 m/s. She hits a 60 gram tennis ball that was approaching her at a speed of 17 m/s. evaluate the average force that the racket exerts on ball
The horizontal constircted pipe, can be used to meausre flow velocitites in an imcompressible fluid. Find the speed of the fluid near the right hand
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