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Q1. A 48-m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 64 A and experiences a magnetic force of 0.16 N. Find out the magnitude of the earth's magnetic field at the location of the wire, assume the field makes an angle of 68.0° with respect to the wire.
Q2. A 4.40 kg block is pushed along a floor by a constant applied force that is horizontal and has a magnitude of 40.0 N. it gives the block's speed v versus time t as the block moves along an x axis on the floor. The scale of its vertical axis is set by vs = 6 m/s. What is the coefficient of kinetic friction between block and floor?
A 500 g block slides along a frictionless surface at a speed of 0.35m/s .it runs into a horizontal mass less spring with spring constant 50N/m that extends outward from a wall.
How much waste heat is produced by an electrical power station that uses 1.45 ? 1014 J of heat input with an efficiency of 38.0%, What is the ratio of waste heat to work output
q1. a wheel is spinning clockwise at a 12.0 revolutions per second at t 0. because of friction in the bearings
An insect 1.3mm tall is placed 1.0mm beyond the focal point of the objective lens of a compound microscope. Where is the image formed by the objective lens
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion.
The splitting of ATP can be schematically given as ATP H2O ?ADP P. what is the equilibrium constant at the temperature
Race tracks use walls which will compress when a car hits them at a high rate of speed. Find the spring constant of the wall
A copper plate, with dimensions of 3 cm x 3 cm x 5cm length, width, and thickness respectively, determine the temperature rise in the plate after 10 seconds
A ball thrown horizontally at 30m/s travels a horizontal distance of 44m before hitting the ground. From what height was the ball thrown
Find the maximum rms current allowed in the primary circuit.
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. What is the mass of this canister
A coil is wrapped with 309 turns of wire on the perimeter of a circular frame (of radius 50cm). Each turn has same area, equal to that of the frame.
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