Name the quantity that remains conserved in rocket propulsion

What is conservation force?

Prove that the momentum is conserved in collision

Name the physical quantity which remains same in an uniform circular motion.

During projectile motion the quantities that remain unchanged are

Name the quantity which can bring rolling without slipping.

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Show that angular momentum is conserved.

what is law of conservation of charge ?