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Q. A truck loaded with sand accelerates along a highway. If the driving force stays the same on the truck, what happens to the truck's acceleration if its trailer leaks sand at a constant rate through a hole in the bottom?
Ans.
If the force stays the same, but the mass steadily decreases then the acceleration must increase (F = ma)
If a hydrogen atom in its ground state absorbs a photon with a wavelength of 93 nm, it jumps to an excited state. What is the value of the energy in that excited state?
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