momentum= mass × velocity
p= 50×18
momentum= 900 kg m/s
F=G*(M*m)/r^2
If you double the diameter, you double the radius. So this means r^2 is now (2*r)^2.
If you quintuple it's mass, you multiple M by 5. So M is now 5*M.
Now your equation is:
F=G*(5M*m)/(2r)^2
or
F= 5 G*(M*m)
------------------
4 r^2
so your answer is F (the force due to your mass and gravity or "weight") would change by a factor of 5/4!
F2= 5/4*F1 OR Weight (From New Earth) = 5/4*Weight(from old earth)
hey there! the correct answer would be ozone! hope this helps!!
Answer:
a) q = 7.5 10⁻² C
, b) 190 J
, c) I₀ = 50 A
, d) 1.5 mC
Explanation:
The expression for capacitance is
C = q / DV
q = C DV
let's reduce the magnitudes to the SI system
ΔV = 5 kV = 5000 V
C = 15 μF = 15 10⁻⁶ F
t = 90 μs = 90 10⁻⁶ s
q = 15 10⁻⁶ 5000
q = 7.5 10⁻² C
b) the energy in a capacitor is
U = ½ C ΔV²
U = ½ 15 10⁻⁶ 5000²
U = 1,875 10² J
answer 190 J
c) At the moment the discharge begins, all the current is available and it decreases with time,
whereby
V = I R
in the first instant I = Io
I₀ = V / R
I₀ = 5000/100
I₀ = 50 A
but this is for a very short time
answer 50 A
d) The definition of current is
i = dq / dt
in this case they give us the total current and the total time, so we can find the total charge
i = q / t
q = i t
q = 17 90 10⁻⁶
q = 1.53 10⁻³ C
answer is 1.5 mC
