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Identical point charges of +1.3 micro coulombs are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net force of zero?
A typical ten-pound car wheel has a moment of inertia of about. The wheel rotates about the axle at a constant angular speed making 60 full revolutions in a time interval of 5.
A sphere of mass 2.8 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes an angle of 40° with vertical when at rest.
A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5 g being converted to steam. The final temperature of the system is 100°C. Neglect energy trans..
A two-ended "rocket" that is at first stationary on a frictionless floor, with its center an origin of an x axis.
Two identical +9.5uC point charges are initially 3.5cm from each other. If they are released at the same instant from rest, hoe fast will each be moving when they are very far away from each other? suppose they have identical masse of 1mg.
A 110 granite cube slides down a 45 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 235 steel cube at rest. How high above the table should the granite cube be released to give the steel cube a..
A car makes a round trip for 100m in 10 seconds. What is the average velocity?
A novice skier, starting from rest, slides down a frictionless 28.00 incline whose vertical height is 170. How fast is she going while she reaches the bottom?
What is acceleration of an object sliding down to plane
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.6m/s at ground level. Its engines then fire and it accelerates upward at 3.80 m/s2 until it reaches an altitude of 930m. At that point its engines fai..
Find out an acceleration of mass and tension in the string
A diving board of length 3{rm m} is supported at a point 1 {rm m} from the end, and a diver weighing 550 {rm N} stands at the free end. The diving board is of uniform cross section and weighs 295 {rm N}. Find out the magnitude of the force at the ..
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