Answer:
Hi... Your answer is impulse
Answer:
The speed of sound in a rod made of the material is 3215.52 m/s.
Explanation:
The speed of sound can be found using the formula:
Where s is the stiffness, m the atomic mass and d is the length of the interatomic bond.
You just have to correctly replace these values in the formula above.

V= 3215.52 m/s
Answer:
F = 5.33*10^-4N
Explanation:
to find the electrostatic force you use the Coulomb's law, given by the formula:

k: Coulomb's constant = 8.89*10^9 Nm^2/C^2
q_a: charge of A = 2.0*10^{-6}C
q_B: charge of B = -3.0*10^{-6}C
r: distance between the spheres = 10.0m
By replacing all these values you obtain:

hence, the forcebetween the spheres is about 5.33*10^-4N