Find the surface energy of water kept in a cylindrical vessel of radius 6.0 cm. Surface tension of water = 0.075 J/m2.
0 Answers
The circumference of the base of a cylindrical vessel is 132 cm and its height is 25 cm. How many litres of water can it hold? (1000 cm3 = 1l)
Here, h = 25 cm, 2πr = 132 cm. 2πr = 132 ⇒ 2 × 22/ 7 × r = 132 ⇒ r = 132x 7/ 2 x 22 cm = 21...
1 Answers 1 views
It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10 m deep. If the cost of painting is at the rate of Rs 20 per m2, find
Here, h = 10 m (i) Inner curved surface area = Total cost / Cost of painting per m2 = 2200 / 20 m2 = 110 m2 Ans. (ii) We have, 2πrh =...
1 Answers 2 views
Water kept in sunlight gets heat from sun and is evaporated. But how does water kept under the shade of a tree also gets evaporated? Explain.
Air around us gets heated from sunlight. This warm air provides heat for evaporation of water kept in the shade.
1 Answers 1 views
Air is pushed into a soap , bubble of radius r to double its radius. If the surface tension of the soap solution is S,
The correct answer is (d) 24πr2S. Explanation: The surface tension S is equal to surface energy per unit area, S = U/A →U = SA The total area of the soap bubble =2*4πr² =8πr² The...
1 Answers 1 views
A small object is placed at the centre of the bottom of a cylindrical vessel of radius 3 cm and height 4 cm
How it comes cot r = 3/4 ?
1 Answers 1 views
A 5.0 cm long straight piece of thread is kept on the surface of water. Find the force with which the surface on one side of the thread pulls it.
Length of the thread, L = 5.0 cm =0.05 m The surface tension of the water, S = 0.076 N/m Hence the force of surface tension on one side of the thread...
1 Answers 1 views
A 5.0 cm long straight piece of thread is kept on the surface of water. Find the force with which the surface on one side of the thread pulls it.
1 Answers
1 views
Find the surface energy of water kept in a cylindrical vessel of radius 6.0 cm. Surface tension of water = 0.075 J/m^2.
Thanks for the answer I was confused what to take area thanks
1 Answers 1 views
Find the surface energy of water kept in a cylindrical vessel of radius 6.0 cm. Surface tension of water = 0.075 J/m^2.
1 Answers
1 views
A sphere of radius 3cm is dropped into a cylindrical vessel of radius 4cm.
The correct answer is (C) 2.25.
1 Answers 1 views