Answer:
25,000
Explanation:
5x5 is 25, 25 x 5 is 125, 125 x 5 is 625, 625 x 3,125, 3,125 x 8 is 25,000!
L = length of side of square = 0.400 m
d = length of the diagonal
using Pythagorean theorem
d = sqrt(L² + L²)
d = sqrt(2L²)
d = sqrt(2) L
r = distance of each small sphere from the center
from the diagram , we see that
2r = d
hence r = d/2
r = sqrt(2) L/2
r = L/sqrt(2)
moment of inertia is given as
I = m r²
total moment of inertia of four spheres is given as
I' = 4 I
I' = 4 m r²
I' = 4 m ( L/sqrt(2))²
I' = 4 mL²/2
I' = 2 mL²
inserting the values
I' = 2 (0.2) (0.4)²
I' = 0.064 kgm²
We know, E = 1/4π∈ * q/r²
Here, 1/4π∈ = 9 × 10⁹
q = 2 C
r = 0.4
Substitute their values,
E = 9 × 10⁹ * 2/(0.4)²
E = 9 × 10⁹ * 2/0.16
E = 9 × 10⁹ * 12.5
E = 112.5 × 10⁹ N/C
So, Your Final Answer would be 1.125 × 10¹¹ N/C
Hope this helps!
The first collision because a greater amount of momentum must be taken and used in order to push the cart back, giving it a greater mass and impulse