What did the results of photoelectric-effect experiments establish?
a) electrons are em...
Physics, 16.12.2019 11:31 sotelonancy888
What did the results of photoelectric-effect experiments establish?
a) electrons are emitted as soon as low-intensity, high-frequency light hits a metal surface.
b) electrons are never emitted if low-intensity light waves strike a metal surface.
c) electrons are emitted if low-intensity light has been incident on metal for a long time.
d) electrons are emitted if high-intensity light has been incident on metal for a long time.
Answers: 3
Physics, 22.06.2019 09:30
On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( Ο= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?
Answers: 2
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