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The starter motor of a car engine draws an electric current of 20.0 A from the battery. The copper wire to the motor is 4.30 mm in diameter and 1.49 m long. The starter motor runs for 0.75 s before the car engine starts up. How much electric charge passes through the starter motor?
What is the current density in the wire?
You drive on Interstate 10 from San Antonio to Houston, half the time at 63 km/h and the other half at 86 km/h. What is your average speed for the entire trip
A gyroscope with rotational inertia 6.4 10-3 kg·m2 is precessing in a horizontal plane at 0.46 rad/s under the influence of a 0.34 N·m torque caused by a force pointing vertically downward
After a day of testing race cars, you decide to take your own 1478 kg car onto the test track. While moving down the track at 11.7 m/s, you suddenly accelerate to 28.8 m/s in 12.6 s. What average net force have you applied to the car during tha..
q1. a thermos contains 161 cm3 of coffee at 82.0 degc. to cool the coffee you drop two 10.8-g ice cubes into the
What is the ratio of the intensity of an earthquake wave as itpasses a point 20 km from the source tothe intensity as it passes a point 12 kmfrom the source?
Two pith balls are each suspended on two strings of equal length of 9.5cm from the same point. How many electrons were removed from each pith ball
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. Determine the current in the rods
A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40-kg child sits on the other end. How long is the beam
Two resistors (connected in series with each other) and a 18 Vbattery are connected in a loop. The voltage drop across the firstresistor is 7 V. What is the voltage drop across the secondresistor?
The particles are as follows: 10 uC at x = 0, y = 0; -5 uC at x = 20, y = 0; -15 uC at x = 20, y = 20; What is the electric field at the center of the square
A long pipe of outer radius 3.10 cm and inner radius 2.64 cm carries a uniform charge density of 3.22 mC/m3. calculate the electric field r = 6.51 cm from the centerline of the pipe
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
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