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Q1. An emf is induced in a conducting loop of wire 1.22 m long as its shape is changed from square to circular. Discover the average magnitude of the induced emf if the change in shape occurs in 4.25 s and the local 0.125 T magnetic field is perpendicular to the plane of the loop.
Q2. The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
A 45.0 kg person, standing 1.3 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.80 m/s relative to the ground. Find out the resulting angular speed of the disk (in rad/s)
Paper has a dielectric constant of 3.5 and a dielectric strength of 16 kV/mm. What is the capacitance of the device
If the pump at one end of the hose and the nozzle at the other end are at the same height, and if the pressure at the nozzle is 1 atm, what is the pressure at the pump
A 5.4-µC point charge is located at x = 0.9 m, y = 3.3 m, and a -3.9-µC point charge is located at x = 1.9 m, y = -1.9 m. (a) Find the magnitude and direction of the electric field at x = -3.2 m, y = 0.9 m.' (b) Find the magnitude and direction of..
A block of mass=0.750kg is fastened to an unstrained horizontal spring whose spring constant is k=65.0N/m. The block is given a displacment of 0.220m and then released from the rest.
A train moving at a constant speed of 59.0 km/h moves east for 50.0 min, What is the average velocity of the train during this run
How much greater is an angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth? (Set up a ratio of angular momenta using data on inside back cover. The period of the moon is about 27.3 days.)
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 120 N to the tire's rim. what force must be applied to the chain
A house has a floor area of 146.0 m2 and an outside wall that has an area of 36.50 m2. Determine the magnetic flux through the wall if the wall faces north
A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begi..
A crane which is effectively fixed to ground lifts a box of mass m with constant speed. The arm of the crane is supported at its base by a friction-free pivot. Determine the tension in the supporting cable
A small rock with mass 0.200 kg is fastened to a massless string with length 0.750 m to form a pendulum. What is tension in the string at the lowest point
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