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A mass spectrometer applies a voltage of 2.00 kV to accelerate a singly charged positive ion. A magnetic field of B = 0.400 T then bends the ion into a circular path of radius 0.205 m. What is the mass of the ion?
A sledge loaded with bricks has a total mass of 17.3 kg and is pulled at constant speed by a rope inclined at 19.4° above the horizontal. What is the mechanical energy lost due to friction
A metallic sphere has a charge of +4.4 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.2 109 electrons are transferred. What are the charges of the sphere and the rod now? sphere nC rod nC
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
An old-fashioned vinyl record rotates on a turntable at 49rpm . What are the angular speed in rad/s and the period of the motion
A 4.98-kg pendulum bob, at a height of 0.720 m above the floor, is released and swings down to the ground, Find how high up the incline the block will slide
A 0.2kg rock attachedd to a horizontal springg of spring constant k=200N/m is placed on a horizontal, frictionless surface. what is the amplitude of motion for the rock
A 100g ball is thrown straight up in the air from a height of 1.5 m above the floor. what was the initial speed of the ball
When the lights of a car are switched on, an ammeter in series with them reads 7.52 A and a voltmeter connected across them reads 12.0 V, find the current through the starting motor
Two small nonconducting spheres have a total charge of 90.7?C. When placed 1.06 m apart, the force each exerts on the other is 10.6 N, What is the smaller charge on the sphere
A 1530 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force
Carl and Lenny are trying to find Carl's keys that are beeping-he attached a device to beep when you whistle for this purpose, how far is Lenny from the key's
A 8 kg stone is dropped from a height of 170 m. Find its kinetic and potential energies when it is halfway to the ground
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