Physics, 18.02.2020 04:34 dianasmygova
Kristen, a 3-year-old, enjoys taking baths and is always willing to get into the bathtub. Kristen hates to have her fingernails clipped and will run and hide if she sees her mother or father with the nail clippers. Edward Thorndike would explain her behaviors using the law of:
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Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?
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An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
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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)
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Kristen, a 3-year-old, enjoys taking baths and is always willing to get into the bathtub. Kristen ha...
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