Physics, 19.01.2021 21:30, deaishaajennings123
The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state, they lose the excess energy in the form of 538-nm photons. What is the energy gap between the ground state and excited state in the laser material
Answers: 2
Physics, 22.06.2019 03:00, trinitieu66
Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.
Answers: 2
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