Asked by julia
In a cathode-ray tube, electrons are projected horizontally at 1.0×10^6 m/s and travel a horizontal distance 11.5 cm across the tube.
How long are the electrons in flight?
Express your answer to two significant figures and include the appropriate units.
Find the vertical distance the electrons fall (under the influence of gravity) during their flight.
Express your answer to two significant figures and include the appropriate units.
How long are the electrons in flight?
Express your answer to two significant figures and include the appropriate units.
Find the vertical distance the electrons fall (under the influence of gravity) during their flight.
Express your answer to two significant figures and include the appropriate units.
Answers
Answered by
Damon
t = distance/speed = .115 * 10^-6 seconds
which is
1.2 *10^-7 seconds
h = (1/2) g t^2
h = 4.9 (1.44)(10^-14)
h = 7.1 * 10^-14 meters
which is
1.2 *10^-7 seconds
h = (1/2) g t^2
h = 4.9 (1.44)(10^-14)
h = 7.1 * 10^-14 meters
Answered by
julia
supposedly the answer to the second part of the question is y = −6.5×10−14 m
any insight?
any insight?
Answered by
Damon
I rounded .115 to .12 in part a
(as instructed :)
If they use 4.9 (1.15)^2
they would get 6.48
which rounds to 6.5
(as instructed :)
If they use 4.9 (1.15)^2
they would get 6.48
which rounds to 6.5