A small sphere of radius \( r \) falls from rest in a viscous liquid. As a result, heat is produ...

Channel:
PW Solutions
Subscribers:
445,000
Published on ● Video Link: https://www.youtube.com/watch?v=eHa7nImWDdU


Duration: 3:52
317 views
9

A small sphere of radius \( r \) falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to
(a) \( r^{5} \)
(b) \( r^{2} \)
(c) \( r^{3} \)
(d) \( r^{4} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2022-11-07A soap bubble of radius \( r \) is blown up to form a bubble of radius \( 3 r \) under isotherma...
2022-11-07In figure below, pressure inside a spherical drop is more than pressure outside. If a liquid dro...
2022-11-07A \( 10 \mathrm{~cm} \) long wire is placed horizontally on the surface of water and is gently p...
2022-11-07A spherical drop of radius \( r \) is in equilibrium. The extra surface energy, if radius of bub...
2022-11-07A wooden stick \( 2 \mathrm{~m} \) long is floating on the surface of water. The surface tension...
2022-11-07The force required to separate two glass plates of \( 10^{-2} \mathrm{~m}^{2} \) with a film of ...
2022-11-07A thin liquid film is formed between a U-shaped wire and a light slider, supporting a weight of ...
2022-11-07The shape of drops and bubbles are spherical due to its (a) surface with minimum energy (b) surf...
2022-11-07Consider two solid spheres \( P \) and \( Q \) each of density \( 8 \mathrm{~g} \mathrm{~cm}^{-3...
2022-11-07A rain drop of radius \( 0.3 \mathrm{~mm} \) has a terminal velocity in air \( 1 \mathrm{~ms}^{-...
2022-11-07A small sphere of radius \( r \) falls from rest in a viscous liquid. As a result, heat is produ...
2022-11-07Two small spherical metal balls, having equal masses are made from materials of densities \( \rh...
2022-11-07A liquid film is formed over a frame \( A B C D \) as shown in figure. Wire \( C D \) can slide ...
2022-11-07The surface tension of a liquid at its boiling point (a) becomes zero (b) becomes infinity (c) i...
2022-11-07A cubical block of steel of each side equal to \( l \) is floating on mercury in a vessel. The d...
2022-11-07The terminal velocity of a copper ball of radius \( 2.0 \mathrm{~mm} \) falling through a tank o...
2022-11-07Surface tension is due to (a) frictional forces between molecules (b) cohesive forces between mo...
2022-11-07A fully loaded boeing aircraft has a mass of \( 3.3 \times 10^{5} \mathrm{~kg} \). Its total win...
2022-11-07Which one shows the variation of the velocity \( v \) with time \( t \) for a small sized spheri...
2022-11-07If ratio of terminal velocity of two drops falling in air is \( 3: 4 \), then what is the ratio ...
2022-11-07A small drop of water falls from rest through a large height \( h \) in air, the final velocity ...


Tags:
pw