Yeah aha u need some water Mellon took
Answer:
r = 5.09m
Explanation:
Weight of an electron is:
W = m*g
W = 9.11 * 10^(-31) * 9.8
W = 8.93 * 10^(-30)N
Electric force between two electrons is given by:
F = kq²/r²
Where
k = Coulumbs constant
q = charge of electron = 1.602 * 10^(-19) C
r = distance between both electrons
If weight is equal to electric force,
8.93 * 10^(-30) = (9 * 10^ 9 * (1.602 * 10^(-19))²/r²
=> r² = (9 * 10^ 9 * (1.602 * 10^(-19))²) / 8.93 * 10^(-30)
r² = 25.9
r = 5.09m
They must be 5.09m apart for the electric force to be equal to the weight of an electron.
Answer:
69.358°
Explanation:
= Angle at the interface =
= Required angle
= Refractive index of air = 1
= Refractive index of liquid = 1.52
From Snell's law we have
The angle from the normal that the refracted ray exit into the air is 69.358°
Answer:
These are the 4 correct answers that should be on your test.
A. A model can represent something very large like the solar system.
B. A model can represent something very small like a single cell.
C. A model can represent something very complex like the flow of energy in an ecosystem.
D. A model can represent something that cannot be seen or touched.
Explanation:
Answer:
Pressure difference between head and toes = 16872.2 Pa
Explanation:
The pressure difference between the head and toes of the man will be equal to the water pressure exerted at his toes. This can be found as follows:
Water pressure = (density of water) * (gravity) * (height of water)
Density of water = 1000 kg/m^3
Gravity = 9.81 m/s^2
Height of water = height of man = 1.72 m
Water pressure = 1000 * 9.81 * 1.72
Water pressure = 16872.2 Pa