Can you please stop pasting this question, just go to his profile and ask him.
Answer:
20.60 kV
Explanation:
Capacitance of parallel plates without dielectric between them is:

with d the distance between the plates, A the area of the plates and ε₀ the constant
, so :

But the dielectric constant is defined as:

With C the effective capacitance (with the dielectric) and Co the original capacitance (without the dielectric). So, the new capacitance is:

But capacitance is related with voltage by:

with Q the charge and V the voltage, using the new capacitance and solving for V:


Answer with Explanation:
We are given that


Spring constant,

a.Speed of ham before collision

Collision is inelastic
According to law of conservation of momentum



Kinetic energy of masses=Spring potential energy at maximum distance



Substitute the values

1 m=100 cm
b.Time period,
