W=(75kg)(9.8m/s^2
W = 735N
Try looking it up. that might help
They are called electron clouds because, 1) they are made up of electrons and 2) when seen in certain microscopes and in theory they look like clouds. Now I'm going to explain 2 in more detail. The cloud part is derived from the fact that what we think of electron orbits being defined circular orbits is false. The motion of electrons in an atom is undefined and unclear, but remains in a certain area- the electron cloud. When you hear the term, electron orbital, that is just the area in which you should expect to find an electron about 90% of the time.
Answer:
x(t) = t^2 - 2 t + 1 given
v = dx / dt = 2 t - 2 = 0
t = 1
It comes to rest after 1 second
Orient the semi-circle arc such that it is symmetric with respect to the y-axis. Now, by symmetry, the electric field in the x-direction cancels to zero. So the only thing of interest is the electric field in the y-direction.
dEy=kp/r^2*sin(a) where k is coulombs constant p is the charge density r is the radius of the arc and a is the angular position of each point on the arc (ranging from 0 to pi. Integrating this renders 2kq/(pi*r^3). Where k is 9*10^9, q is 9.8 uC r is .093 m
I answeared your question can you answear my question pleas
