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Three 14.05-g Styrofoam balls of radius 2 cm are coated with carbon black to create them conducting and then are tied to 1.23-m-long threads and suspended freely from a common point. Every ball is given the same charge, q. At equilibrium, the balls form an equilateral triangle with sides of length 20.64 cm in the horizontal plane. Decide the absolute value of q
a. suppose you held two proton in space far away from any other objects so that the only force is electrical force
A shell is shot with an initial velocity v0 of 44 m/s, at an angle of ?0 = 60° with the horizontal. How far from the gun does the other fragment land
The right figure shows a force of magnitude F = 12.0 N applied to an 8.00 kg block at a downward angle of ? = 30.0°. find the magnitude of the frictional force on the block
The masses of the javelin, discus, and shot are 0.80 kg, 2.0kg, and 7.2 kg, respectively, estimate the average force exerted on each object during the throw
A suitcase is pulled by a tether that makes a 60 degree angle with the horizontal. what is the magnitude of the pull
a 1.2 m long bar of porcelain is placed in a laboratory furnace and heated to 1005 degrees c. if the final length of
A dentist's mirror is placed 3.1 cm from a tooth. The enlarged image is located 6.3 cm behind the mirror. How is the image oriented relative to the object
Albert pushes a 6-kg box across a level floor. He pushes with a force of 43 newtons, and observes that the box accelerates in the direction of his push, What must be the net force acting on the box
A candle is placed 16.85 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, Find the focal length of the convex mirror
A potter's wheel (a solid, uniform disk) of mass 5.7 kg and radius 0.65 m spins about its central axis. A 2.1 kg lump of clay is dropped onto the wheel at a distance 0.41 m from the axis. Calculate the rotational inertia of the system.
A small ball of mass 0.50 g has an electric charge of 1.0 X 10^(-5) C. The ball has an initial velocity of 20 m/s, directed vertically upward. Find the maximum height of the ball
A 300 hp car engine can deliver that maximum power at 6000 rpm. What is the engine's torque at that speed
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