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A copper wire of length 33.0 cm is in a magnetic field of 0.70 T.
If it has a mass of 14.0 g, what is the minimum current (in Amperes) through the wire that would cause a magnetic force equal to its weight?
A block of ice of mass 0.8 kg and initial temperature T = 0 C is placed in a sealed insulated container full of Helium gas, What is the mass of the liquid water
A wire of radius R carries a current with density: J =C(R-r). Find the total current carried by the wire
A weight lifter lifts a 360-N set of weights from ground level to a position over his head, a vertical distance of 2.05 m. How much work does the weight lifter do
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. How far from the dock does the boat reach the child
An Indy car with a speed of 140 goes around a level, circular track with a radius of 1.50 What is the centripetal acceleration of the car
what is the maximum weight of the crate that the system can support? What is the angle needed for equilibrium.
Polonium-210 decays to the ground state of Lead-206 by the emission of a 5.305-MeV alpha-particle with a half-life of 138 days. What mass of Polonium-210 is needed to produce 1 MW of thermal energy from its radioactive decay?
The distance between two successive minima of a transverse wave is 2.45 m. Five crests of the wave pass a given point along the direction of travel every 14.5 s. (a) Find the frequency of the wave. Hz (b) Find the wave speed. m/s
What is the net force exerted on the skier, assume his acceleration is constant.
The proper length of one spaceship is three times that of another. The two spaceships are traveling in the same direction, determine the speed of the faster spaceship
The minute hand of the Official Quiz Clock points to the 12 and is functioning normally until the quiz begins, How much quiz time do the students lose
A coil is placed in a changing magnetic field and an emf is induced. What happens to induced emf if the rate of change of magnetic field quadruples.
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