94 electrons. protons and electrons are always the same, but neutrons are different.
Answer:

Explanation:
We know that for a capacitor
, where <em>Q </em>is the charge of one plate, <em>C</em> the capacitance and <em>V</em> the potential between the plates.
We also know that
, since
is the surface charge density and <em>A</em> the area of the plate (both equal in our case).
Putting all together:

Which for our values is:

Where we notice that the S.I. units combination FV/C must not have units (we can verify it directly from their definitions or we notice that
is enough to describe an area).
Answer:
total work is = 52450 J
Explanation:
given data
mass = 5000-lb
density = 10 lb/ft
height = 50 ft
solution
as we will treat here cable and ball are separate
and
here work need to lift cable is
w = (10Δy )(9.8 y ) j
and
now summing all segment of cable
so passing limit Δy to 0
so total work need
=
=
= 2450J
so lifting 5000 lb wrcking 50 m required additional 5000 + 2450
so total work is = 52450 J
Answer:
0.5
Explanation:
calculating the total resistance for the both the parallel and the series resistors then later using the ohm's law formulae V=IR to calculate current.