Answer:
2400 calories
Explanation:
given,
diameter of pizza,d₁ = 6 inches
calories of the 6 inches pizza = 600 calories
diameter of large size of pizza, d₂ = 12 inches
calories of the 12 inches pizza = ?
Area of the 6 inches pizza
A₁ = π x 3² = 9 π
Area of the 12 inches pizza
A₂ = π x 6² = 36 π
Ratio of 12 inch pizza to 6 inches
=
=
calories of the pizza
x = 2400 calories
Pizza of 12 inches is of calories is equal to 2400 calories
Answer:
(a) 1.215 x 10^-13 J
(b) n = 7.6 x 10^5
Explanation:
distance, r = 8.3 x 10^-10 m
Force, F = 192.9 x 10^-9 N
Let the charge is q.
(a) According to the Coulomb's law
q = 1.215 x 10^-13 C
(b) Let n number of electrons are missing.
n = 7.6 x 10^5
Answer:
Coulomb's law is:
First, force has units of Newtons, the charges have units of Coulombs, and r, the distance, has units of meters, then, working only with the units we have:
N = (1/{e0})*C^2/m^2
then we have:
{e0} = C^2/(m^2*N)
And we know that N = kg*m/s^2
then the dimensions of e0 are:
{e0} = C^2*s^2/(m^3)
(current square per time square over cubed distance)
And knowing that a Faraday is:
F = C^2*S^2/m^2
The units of e0 are:
{e0} = F/m.