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The starter motor of a car engine draws a current of 100A 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?
A 25-g rifle bullet travelling 280-m/s buries itself in a 3.6-kg pendulum hanging on a 2.8m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of pendulum's displacement.
A molecule absorbs a 2.5 eV photon and transitions from the n=0, l=0 state to the n=1, l=0 state. What is its classical frequency
You are a professional frontier re-enactor who specializes in making lead shot. To do this you put 2 kg of ice into 2 kg of water, both at 0 C, into an insulated bucket.
The total charge that an automobile battery can supply without being recharged is given in terms of Ampere-hours. If each of the two headlights draws 1.7 A , find out the time before your battery is "dead"
If the radius of the equipotential surface of a point charge is 21.0m and is at a potential of +3.50kv
A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The disk is mounted on frictionless bearing and is used as a turntable. What is the final angular momentum of the system
A major-league pitcher can throw a baseball in excess of 44.2m/s. If a ball is thrown horizontally at this speed, how much would it drop by the time it reaches the catcher who is 16.10 m away from the point of release.
A meterstick moves past you at great speed. Its motion relative to you is parallel to its long axis. at what speed is the meterstick moving relative to you
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
Protons are projected with an initial velocity v0 = 10360 m/s into a region where a uniform electric field E = 670 N/C is present. The protons are to hit a target that lies a horizontal distance of 1.27 mm from the point where protons are launched..
A thin layer of magnesium fluoride (n = 1.38) is used to coat a flint-glass lens (n = 1.61). What atleast thickness should the magnesium fluoride film have if the reflection of 669 nm light is to be suppressed? suppose that the light is incident a..
When a nerve impulse propagates along a nerve cell, find the magnitude of the change in charge density on the walls on the cell membrane
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