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Q. A 10-cm long thin glass rod is uniformly charged to 50 nC. A small plastic bead, charged to - 5.2 nC, is 4.5 cm from the center of the rod.What is the magnitude of the force on the bead?What is the direction of the force on the bead?
Q. Four 6.5 kg spheres are located at the corners of a square of side 0.68 m. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
A parallel beam of light from a He-Ne laser, with wavelength of 644 nm, falls on two very narrow slits 0.05 mm apart. How far apart are the fringes in the center of the pattern on a screen 2.2m away.
A 747 airliner reaches its takeoff speed of 187 mi/h in 31.4s. What is the magnitude of its average acceleration.
Compute the required time by the current to reach an initial value in an inductive discharge circuit.
How many kilograms of water at 100.0 C could be converted to steam by the addition of 1.13 x 10^7 joules of thermal energy.
A box of mass 15 kg is dragged by a 50 N horizontal force a distance of 10 m over a rough surface with the coefficient of friction = 0.14 the work done by friction force.
On your wedding day your lover gives you a gold ring of mass 3.98 g. 59 years later its mass is 3.73 g. On the average how many atoms were abrated from the ring during each second of your marriage? The atomic mass of gold is 177 u.
A rifle with a barrel length of 58 fires an 11 bullet with a horizontal speed of 370. The bullet strikes a block of wood and penetrates to a depth of 15.
Which state is best illustrates kinetic friction
A 13 kg bucket of water of is suspended by a rope wrapped around a windlass that is a solid cylinder 0.400 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center.
What travel time is required for the landing
A door of width 1.0 and height 2.0 weighs 279 and is supported by two hinges, one a distance 0.500 from the top and the other a distance 0.50 from the bottom. Each hinge supports half the total weight of the door.
A hunter aims directly at a target (on the same level) 84.2m. If the bullet leaves the gun at a speed of 193 m/s, by how much will it miss the target.
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