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A tennis ball (m = 0.2 kilogram) is thrown at a brick wall. It is traveling horizontally at 15 meter per second just before hitting the wall and rebounds from the wall at 12 meter per second, still traveling horizontally. The ball is in contact with the wall for 0.02 second. Obtain the magnitude of the average force of wall on ball?
A pacific north west home has a solar photovoltaic (PV) system that produces 10.45 MWh of usable electricity peryear. Their PV system is tied to the electrical grid, and all theenergy it produces is credited against their energy home consumption.
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole. (b) Imagine adding electrons to the pin until the negative charge h..
A bowling ball weighing 70.1N is attached to the ceiling by arope of length 3.70m. What is the tension in the rope at this instant
A proton is shot at 5 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
A standing wave on a tight string experiment is set upin the laboratory. One end of the string is attached to anoscillator that vibrates with a frequency of 60 Hz. What is the wave speed of the standing wave
two point charges are located on the x axis one charge q1 -17.5nc is located at x -1.740m the second charge q2
The 1994 Winter Olympics included the aerials competition inskiing. In this event skiers speed down a ramp that slopes sharplyupward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers.
There is a clever kitchen gadget for drying lettuce leaves afteryou wash them. It consists of a cylindrical container mounted sothat it can be rotated about its axis by turning a hand crank.
An archeological specimen containing 10.2 gram of carbon has an activity of 0.8 Bq. Evaluate how old is the specimen
question1it has been claimed that an insect known as froghopper philanenus spumarius is the best jumper in animal
A person sees a heavy stone strike the concrete pavement. A, moment later two sounds are heard from the impact: How far away did the impact occur
For an electromagnetic wave with maximum electric field of 1400V/m , and wavelength of 490nm. What is the intensity of the wave described
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