) State the relation between acceleration and momentum (10 marks). (B) Two small steel balls A and B have mass 0.6 kg and 0.2 kg respectively. They are

moving towards each other in opposite directions on a smooth horizontal table when they

collide directly. Immediately before the collision, the speed of A is 8 m/s and the speed of B

is 2 m/s. Immediately after the collision, the direction of motion of A is unchanged and the

speed of B is twice the speed of A. Find :

a. The speed of A immediately after the collision (10 marks),

b. The magnitude of the impulse exerted on B in the collision​

yup its correct its: c) b b

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia