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Two identical wires are horizontal and run parallel to each other. They each carry the similar current, I. The top wire is held in place by supports but the bottom wire floats suspended by magnetic forces, 1.0 cm directly underneath the top wire. If the wires have a mass per unit length of 0.050 kg/m, find the magnitude and relative direction of the currents in the wires.
The largest wavelength of light that will induce a photoelectric effect in potassium is 564nm. What is the kenetic energy of the ejected electron
an airplane has a velocity relative to the air of 196 ms in a westerly direction. if the wind has a speed relative to
A space traveler weighs 750 N on earth. Illustrate what will the traveler weigh on another planet whose radius is three times that of the earth and whose mass is twice that of the earth.
A golfer hits a shot to a green that is elevated 3.00 m above the point where the ball is struck. find the speed of the ball just before it lands
a person takes a trip driving with a constant speed of 95.5 kmh except for a 22.0-min rest stop. the persons average
a 5100 kg open train car is rolling on frictionless rails at 26 ms when it starts pouring rain. rain falls vertically.
A boat that travels at a speed of 6.75 m/s in still water isto go directly across a river and back . The current flows at 0.50m/s. At what angle(s) must the boat be steered
A 4.9 kg block is initially at rest on a horizontal frictionlesssurface when a horizontal force in the positive direction ofan x axis is applied to the block. The force isgiven by (x) = (2.8- x2) N, where x is inmeters and the initial position of ..
An angler hangs a 4.52-kg fish from a vertical steel wire 1.65m long and 5.47×10?3cm2 in cross-sectional area. Calculate the amount the wire is stretched by the hanging fish
It was once recorded that a Jaguar left skid marks that were 290 m in length. Assuming that the Jaguar skidded to a stop with a constant acceleration of -3.90 m/s2, determine the speed of the Jaguar before it began to skid.
750kg racecar took 3s to slow from 32m/s to 15m/s. What was the impluse? what was the average force applied to the brakes
throughout the process the mechanical device pushing the piston to compress gas is found to expend 4 kJ of energy. What is the magnitude of the heat flow between heat reservoir and the gas and in what direction does the heat flow occur.
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