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The electric force between two charged particles becomes weaker with increasing distance. Suppose instead the electric force were independent of distance . In this case would a charged comb still cause a neutral insulator to become polarized? why or why not? would the neutral insulator still be attracted tothe comb? Again , why or why not? provide examples also if you can.
A pendulum, consisting of a ball of mass m on a light string of length 1.00 m, is swung back to a 45° angle and released from rest. What is the block's speed after the collision
A small electric car overcomes a 260N friction force when traveling 23km/h. What percent of the input power is used to drive the car
In the picture mass 2 is initially at rest and attached to a spring of constant k. (The spring is fixed to the wall). Mass 1 travels at speed v and collides with mass 2 and the two stick together. ( There is no friction). Find an expression for the m..
A bag of cement weighing 275 N hangs in equilibrium from three wires as suggested in the figure below. Two of the wires make angles θ1 = 56.0° and θ2 = 42.0° with the horizontal. Assuming the system is in equilibrium, find the tensions T1, T2,..
One afternoon, you are playing on a wooden basketball court with a hula?hoop to amuse yourself. The hoop has a mass of 500g and a radius of 55 cm. What is the hoop's speed just before it hits the wall
A spherical steel ball bearing has a diameter of 2.54 cm at 22 degrees. what is the diameter as its termperature is raised at 88 degrees celcuis.
A student drops two metallic objects into a 32 g steel container holding 169 g of water at 29C. One object is a 486 g cube of copper that is initially at 58C, What was the mass of the aluminum chunk
Two blocks of masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find a relation between the variables that would guarantee that the block is initially slowing down
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 2.36 m/s. What is the height of the hill
A 0.481 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
Starting 4.0m from a department store mirror, How far is Suzanne from her image in the mirror after 1.0s
The weight of a block of metal is measured with a scale first in air, then in water. Find the specific gravity of the metal ( the ratio of the density of metal to the density of water). The tension of the block is measured 6.0N in air and 4.0N in wa..
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