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Q: threshold into

A: correct option is b

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Q: why hot air rises

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Q: Which of the following are in equilibrium? Choose all that apply. [NOTE: "spinning up" means the rat...

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Q: What is the magnitude of the electric field from 3.5m from a point charge of 2.75 x 10^4 C?

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Q: Part A A 6900-kg boxcar traveling at 14 m/s strikes a second boxcar at rest. The two stick together ...

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.