How many cars are there in a freight train if it takes the entire train 5.00 min to pass a station as it travels 45.0 miles per hour. Each car is 60.0 ft long.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl