can u plz give me step by step explanation of the attached numerical... it's urgent give me the solution fast..
Answers
Explanation:
7.
Given:
Weight of brass piece in air = 175 gf
Weight of the brass piece in water = 150 gf
Density of water = 1.0 g cm⁻³
(i) To find the volume of the brass piece
We know that volume of a body is the loss in weight of the body
∴ Volume = loss in weight = 175 - 150 = 25 cm³
(ii) The brass piece weighs lesser in water due to upthrust.
8.
Given:
Density of metal cube = 9.0 g cm⁻³
Density of liquid = 1.2 g cm⁻³
Side of the cube = 5 cm
=> Volume of the cube = 5 x 5 x 5 = 125 cm³
To find weight of the cube:
Mass of the cube = volume of the cube x density of the cube
= 125 x 9
= 1125 g
∴ Weight of the cube = 1125 gf
Weight of the cube acts downwards
Upthrust acting on the cube = weight of the liquid moved
= volume of the cube * density of the liquid * g
= 125 * 1.2 * g = 150 gf
Upthrust on the cube acts in the upward direction
Tension in thread = total force acting in the downward direction
= weight of the cube acting downwards - upthrust acting on the cube
= 1125 - 150
= 975 gf
= 9.75 N
Hope it helps!Brainliest it mate!