As a roller coaster car starts down a slope, it's velocity is 4m/s. But 3 seconds later it's velocity is 22m/s in the same direction. What is its acceleration

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Define the wavelength of sound in terms of successive compressions of air

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Organic chemistry is the study of compounds containing

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What type of wave is sound? longitudinal light surface transversal

What is the difference between meteors and meteorites?

The puzzle box is traditionally associated with the work of

A 0.95-kg sample of water at 11°C is in a calorimeter. You drop a piece of steel with a mass of 0.39 kg at 212°C into it.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.