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Two small spheres each have a mass of m of 0.100 gram and are suspended as pendulums by light insulating strings from a common point. The spheres are given the same electric charge, and the two come to equilibrium when each string is at an angle of theta=3o with the vertical. If each string is 1 meter long, obtain the magnitude of the charge on each sphere?
A 1600kg car takes a 50-m-radius unbanked curve at 17m/s, What is the size of the friction force on the car
A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begi..
an object is being dropped from a height h 86 meters above ground. assuming no air friction nor winda. show your
Suppose that you wish to fabricate a uniform wire out of 0.950 g of copper. Assume the wire has a resistance R = 0.600 ?, and all of the copper is used. What will be the length of the wire
A pitcher throws a 0.140 KG baseball, and it approaches a bat at 30.0 m/s. The Bat does Wnc=70.0J work on the ball in hitting it. Ignoring air resistance, deterring the speed of the ball after the ball leaves the bat and it has gone 25.0m.
a solid sphere with radius 0.050m and a mass of 3.0kg has a rod through its center. a net torque of 6.010-4 nm is used
The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end, What is the skier's launch speed
Assume that the partner moves on a circle that has a radius of 6.50 m. At a swinging speed of 4.45 m/s, what force must the man apply to his partner in the straight-down position?
A grocery cart with mass of 18 kg is pushed at constant speedalong an aisle by force F=12 N. Find the work done by each of the forces on the cart
a determine the capacitance of a teflon-filled parallel-plate capacitor having a plate area of 1.90 cm2 and insulation
A spaceships leave Earth in opposite directions, each with a speedof 0.50c with respect to Earth. What is the velocity of spaceship1 relative to spaceship2
From the top of a 30ft building, the angle of depression to the foot of a building across the street is 70 degrees and the angle of elevation to the top of the same building is 71degrees( how tall is he building across the street ?)
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