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A 920 kilogram sports car collides into the rear end of a 2300 kilogram SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 meter before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is 0.80. Estimate the speed of the sports car at impact. Determine what was that speed?
Two very long wires carrying a current I of 3.0 A out of the pageare at two of the corners of an equilateral triangle. The sides ofthe triangle are 1.0 m long. Find the direction and magnitude of the magnetic field at P, the third corner of the trian..
A parallel-plate capacitor has plates with an area of 379cm2 and an air-filled gap between the plates that is2.65mm thick. The capacitor is charged by a battery to 575 V andthen is disconnected from the battery.
A muon is produced by a collision between a cosmic ray and an oxygen nucleus in the upper atmosphere at an altitude of 50 km, What is the velocity of a muon at the surface
A ball is thrown up with a velocity of 8 m/s and allowed to fall back down. how long will the ball take to return to its initial position
a rocket is launched at an angle of 50.0deg above the horizontal with an initial speed of 101 ms. the rocket moves for
a 2.0 kg object has a velocity v 4.0i ms at t 0. a constant resultant force f 2.0i 4.0j n then acts on the object
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 9.17multiplied by 107 km. Radio waves travel atthe speed of light (3.00 multiplied by 108 m/s). How many seconds does it take for the signal to reach the Earth..
In RLC circuit, the sum of the magnitudes of the voltages across the the three components was always greater that the generator voltage. Explain why Kirchhoff's law is not violated
if the radius of a blood vessel is reduced by cholesterol deposits to 90 of its original value flow will decrease. by
Suppose that a small incandescent light bulb (R=2.88 kilo ohms) is connected to a standard European household AC electrical socket, Find the average power dissipated by the light bulb
Dry ice is frozen carbon dioxide. Suppose you have a piece of dry ice with a mass of 200 grams (a little less than half a pound) which you place into a large deflated bag, which you seal. What volume will the bag have expanded to
In an RLC circuit, the following three elements are connected in series: a resistor of 45.0 ?, a 21.0-mH inductor, and a 0.450-µF capacitor. Find the power factor for the RLC series circuit
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