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The starter motor of a car engine draws a current of 170A from the battery. The copper wire to the motor is 4.0mm in diameter and 1.2m long. The starter motor runs for 0.90s until the car engine starts. How much charge passes through the starter motor?
Consider an aircraft powered by a turbojet engine that has a pressure ratio of 12. The aircraft is stationary on the ground, held in position by its brakes. determine the force that must be applied on the brakes to hold the plane stationary
A bullet of 0.0500 kg is fired into a block of wood. Knowing that the bullet left the gun with a muzzle velocity of 350. m/s, find The average force required to stop the bullet
Two events occur in an inertial system K as follows: Event 1: x1 = a t1 = 2a/c y1 = 0 z1 = 0 Event 2: x2 = 2a t2 = 3a/2c y2 = 0 z2 = 0 In what frame K’ will these events appear to be simultaneous? Is there a frame K’ in which the two events described..
If the person can view the image produced by the microscope with a completely relaxed eye, and the magnification is -4825, what is the focal length of the objective
q1. what is the electric potential energy of three equal positive charges of 1.33 microc while they are arranged to
Tarzan, whose mass is 80.0 kg, swings from a 3.00-m vine thatis horizontal when he starts. What is the height of the highest tree limb they can reach on the upwardswing
A flat circular coil with 102 turns, a radius of 3.92 10-2 m, Find the magnitude of the magnetic field at the center of the coil that is produced by the induced current
A certain transverse wave is described by y(x,t)=Bcos[2pi(x/L - t/T)], where B= 6.80mm , L= 30.0cm , and T= 3.30×10^-2s. Determine the wave's speed of propagation
Two elastic particles, each with mass m, collide head on. Initially they have speeds v1 and v2. What are their speeds after the collision
A 110 g cube of ice at 0°C is dropped into 1 kg of water that was originally at 90°C. What is an final temperature of the water after the ice has melted.
A constant torque of 21.4 N•m is applied to a grindstone whose moment of inertia is 0.125 kg•m2. Using energy principles, determine the angular speed (in revolutions per second) after the grindstone has made 19 revolutions. (Avoid friction.) Do no..
An electric dipole p with magnitude 25 pC.m makes an angle of 65 ° with an electric field E of magnitude 3.0 x 10 ^ -6 N / C. How is the magnitude of the torque acting on the dipole?
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