Aparallel plate capacitor is made of two large plates ofarea
a each. one of the plates is grounded and the other israised to a
potential vo. a dielectric slab ofpermittivity
and thickness t (t capacitance of this capacitor.

Explanation:

If there is a dielectric slab with thickness less than the distance between the plates is inserted inside a capacitor, then that capacitor can be regarded as two capacitors connected in series.

Let's assume that the slab is placed onto the lower side. So, the capacitance of that part of the capacitor, C1 is

where is the permittivity of the slab.

The other part of the capacitor is

Two capacitors are connected in series:

If we know the charge of the plates, we could relate the potential V0 to capacitance via

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

your answer is c! hope this : )