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A 9.7 g object moving to the right at 11cm/s makes an elastic head-on collision with a 14 gram object moving in the opposite direction at 47 cm/s. Find the velocity of the first object immediately after the collision. Answer in cm/s.
0.97 L of 16C water is placed in a refrigerator. What is the refrigerator's coefficient of performance
A copper wire has a 25-m ohm resistance at 20 degrees C. When the wire is carrying a current, What is the change in the wire's resistance
A container ship leaves port A and heads due west with an average speed of 18.0 knots (1knot=1.852 km/hr). what are its average speed and average velocity
We can reasonably model a 90-W incandescent lightbulb as a sphere 5.5cm in diameter. find the visible light intensity at the surface of the bulb
What is your displacement after running 2.60 west on Strawberry Fields, 1.1 south on Penny Lane, and 5.0 north of east at 40 degree on Abbey Road.
The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane
A person with a mass of 103 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator accelerates upward at 3.2 m/s2, what does the scale read.
An open-pit coal mine consumes 96 hectares of land, down to the depth of 26 m, each year. What volume of earth, in cubic kilometres, is removed in this time.
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. The two particles are initially held in place and then released.
A crate of mass 2000 kg is hanging from a crane at the end of a cable 12 m long. what angle will the cable finally make with the vertical
Coherent light with wavelength 599 passes through two very narrow slits, and the interference pattern is observed on the screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central b..
A rubber ball is dropped from rest 3.3m onto level ground. Bouncing back the ball loses 25% of its mechanical energy. To what height does it rebound
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