Question

(b)Why does a sharp knife cut objects more effectively than a blunt knife?
1 (C) Will a diver experience greater pressure 150cm below the surface of the water or 1500cm
below the surface of water? Justify your answer.​

Answer 1

Explanation:

b) a sharp knife cut objects more effectively than a blunt knife because a sharp knife has less surface area in contact hence increases the pressure.

c) the diver experiences greater pressure below 1500 of the the surface of water because in depth there is more volume of water over the body of the diver.

Answer 2

Answer:

Explanation:Sharp knife has lesser surface area as compared to blunt knife.

As pressure is inversely proportional to area therefore sharper knife will cut more effectively than blunt knife.

A diver will experience more pressure at 1500cm because as we move down in a liquid it's pressure increases that means that pressure is maximum at the base.

Thank you