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A flat circular coil with 25 turns and a radius of 5 cm lies in the plane of the paper. A changing magnetic field is present in adirection perpendicular to and coming out of the plane of the paper. The resistance of the coil is 0.5 ohms and a current of 50mA is observed to be flowing clockwise in the coil.a. What is the rate of change of the magnetic field(ΔB/Δt)?b. Is the magnitude of the magnetic field increasing ordecreasing?
A weight of unknown mass is suspended from a steel wire that is 1.27 m long and has a diameter of 0.56 mm; Find the mass of the weight
A copy-cat daredevil tries to reenact Evel Knievel's 1974 attempt to jump the Snake River Canyon in a rocket-powered motorcycle. What is the minimum launch speed required for the daredevil
c denotes partial differentiation wrt coordinate xc and c denotes covariant differentiation wrt coordinate xc .1.
The pendulum in the figure consists of a uniform disk with radius r = 15.0 cm and mass 420 g attached to a uniform rod with length L = 380 mm and mass 240 g. Calculate the rotational inertia of the pendulum about the pivot point
A ladder of mass 30 kg and length 5m leans against a frictionless wall. The angle between the ladder and the wall is 37 degree. what is the force between the ladder and the wall
A proton accelerates from rest in a uniform electric field of650 N/C. At some later time, its speedis 1.3 106 m/s. Find the magnitude of the acceleration of the proton. How long does it take the proton to reach this speed?
A hockey puck has a mass of 0.113 kg and is at rest. A hockey player makes a shot, exerting a constant force of 28.0 N on the puck for 0.16 s. With what speed does it head toward the goal
a 1.50 kg snowball is fired from a cliff 12.5 m high. the snowballs velocity is 14.0 ms directed 41.0 degrees above the
A ball is thrown upward at 20 m/s from the top of a building, which is 100 meter high. Another ball is thrown downward from the top of the building at 15 m/s. What is their final speed when they hit the ground
Arlene is to walk across a high wire strung horizontally between two buildings 11.0 m apart. The sag in the rope when she is at the midpoint is 10.0°. If her mass is 56.0 kg, what is the tension in the rope at this point.
You walk at an angle of θ=50.0* toward a planemirror. Your walking velocity has a magnitude of 0.90m/s. What is the velocity of your image relative to you(magnitude and direction)? What equation should I use to figure this problem out?
A 6.4 kg freight car is coasting at a speed of 46.3 m/s along a straight track when it strikes a 15.8 kg stationary freight car and couples to it. What will be their combined speed after impact
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