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A sports car with a mass of 1000 kg crashes into the rear an SUV with amass of 2400 kg that is stopped at a RED light. The bumpers lock and two cars skid forward a distance of 3 meters before coming to a stop. if the coefficient of kinetic friction is 0.7 calculate sports car's speed immediately before impact.
A heating element in a stove is designed to dissipate 3380 W of heat when it is connected to 200 V. Assuming that the resistance is constant, Calculate the power the heating element dissipates
A charged conducting sphere has a radius of 10.0 cm and is surrounded by an electric field. What is the potential at the center of sphere
A spring with spring constant 15N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. What is its the mass of the ball
A column of soldiers, marching at 141 paces per minute, keep in step with the beat of a drummer at the head of the column, What is the approximate length of the column
Two people with a combined mass of 123kg hop into an old car with worn-out shock absorbers. Find the total load supported by the springs
Jack and Jill ran up the hill at 3.5m/s . The horizontal component of Jill's velocity vector was 2.5m/s . What was the angle of the hill? What was the vertical component of Jill's velocity?
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. Calculate the intensity of the focused beam
A 0.65-g particle remains stationary when placed in a uniform electric field (on earth). What is the electric field's direction
The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.17 mA, How much energy does the battery deliver to the calculator circuit
Neglect air resitance. Find rocket's kinetic energy when the rocket is 1000 km above Earth's surface. Illustrate what is the max heigh that the rocket reaches.
An electron of mass 9.11E-31 kg has an initial speed of 3E5 m/sec. It travels in a straight line and its speed increases to 7E5 m/sec in a distance of 5.0 cm. What is the force on the electron
What is the maximum amount of energy that is stored in a volcano if the chamber is 5.5x10^4 meters wide, 7.2x10^4 meters long, thickness =500meters, located at 1200 meters deep, and the crust has a density of 2600 kg/m^3? show work please
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