2. Two toy cars are involved in a race. Car A has mass m while car B has mass 2m. a. The two cars have the same force applied to them over a distance of 1 meter. Which car has a larger kinetic energy after traveling 1 meter? Which car has a larger momentum after traveling 1 meter? Explain your answers. b. The two cars have the same force applied to them over a time period of 10 seconds. Which car has a larger kinetic energy after 10 seconds? Which car has a larger momentum after 10 seconds? Explain your answers.
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True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.
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Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
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Physics, 22.06.2019 14:40
On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)
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1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)
Answers: 1
2. Two toy cars are involved in a race. Car A has mass m while car B has mass 2m. a. The two cars ha...
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