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A straight wire rests on a level surface and is oriented along the east-west axis. A compass is placed above the wire and parallel to the surface. When a current flows in the wire eastward, in what direction will the north end of the compass point?
A block of inertia .2 kg is launched from a spring onto a frictionless surface. The velocity it has upon leaving the spring is 2.5 m/s. What is the impulse delivered to the block by the wall
A blue car with mass mc = 428 kg is moving east with a speed of vc = 20 m/s and collides with a purple truck with mass mt = 1284 kg, What is the magnitude of the initial momentum of the car
q1. if a car travelling at 63 kmh will skid 18 m when its brakes lock how far will it skid if it is travelling at 150
A uniform thin rod of length 0.400 m and mass 4.50 kg can rotate in a horizontal plane about a vertical axis through its center. what is the bullet's speed just before impact
The current in an electron beam in a cathode-ray tube is measured to be 20 uA. How many electrons hit the screen in 10 seconds
A closed surface encloses a net charge of -3.50. What is the net electric flux through the surface? Use 8.85×10?12 for the permittivity of free space.
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.875 rad/s. You, with a mass of 72.3 kg, Calculate the total angular momentum of the system.
A 800 kg car pushes a 2000 kg truck that has a dead battery. What is the magnitude of the force of the truck on the car
A diver runs horizontally off the end of a diving board with an initial speed of 1.70 m/s, what is the diver's speed just before she enters the water
A proton travels with a speed of 3.00 106 m/s at an angle of 24.0° with the direction of a magnetic field of 0.430 T in the +y direction. (a) What is the magnitude of the magnetic force on the proton? N (b) What is its acceleration? m/s2
You dip your finger into a pan of water three times each second, producing waves with crests that are separated by 0.16 m. Determine the frequency of these water waves
A solenoid of length 5.6 cm and diameter 0.88 cm is wound with 167 turns per cm. The current is decreasing at a rate of 37.4 A/s. What is the induced emf in the entire solenoid
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