Physics, 12.12.2020 21:00, mtunes

What happens when a metal bar is heated? A The distance between the molecules increases, making the bar longer.
B The molecules get larger, making the bar longer.
с The molecules vibrate more quickly, making the bar denser.
D The speed of the molecules increases, making the bar thinner.

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What happens when a metal bar is heated? A The distance between the molecules increases, making the...