Question
Describe some day to day activities based on surface tension.

Answer

SELF

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Write the boundary conditions of dimensional equations.
The driver of a three-wheeler moving with a speed of 36km/h sees a child standing in the middle of the road and brings his vehicle to rest in 4.0s just in time to save the child. What is the average retarding force on the vehicle ? The mass of the three-wheeler is 400kg and the mass of the driver is 65kg.
The third overtone of a closed organ pipe is found to be in unison with the first overtone of an open pipe. Find the ratio of the lengths of the pipes.
Mention examples of motion of center of mass.
A solid sphere rolls down two different inclined planes of the same heights but different angles of inclination.
  1. Will it reach the bottom with the same speed in each case?
  2. Will it take longer to roll down one plane than the other?
  3. If so, which one and why?
From the equation $\text{y}=\text{r} \sin\frac{2\pi}{\lambda}(\nu\text{t}-\text{x})$ establish the relation between particle velocity, and wave velocity.
A block of mass $2.0kg$ is pushed down an inclined plane of inclination $37°$ with a force of $20N$ acting parallel to the incline. It is found that the block moves on the incline with an acceleration of $10m/s^2$. If the block started from rest, find the work done.
  1. By the applied force in the first second.
  2. By the weight of the block in the first second.
  3. By the frictional force acting on the block in the first second. Take $g = 10m/s^2$.
One mole of an ideal gas at standard temperature and pressure occupies $22.4 L$ (molar volume). What is the ratio of molar volume to the atomic volume of a mole of hydrogen? (Take the size of hydrogen molecule to be about $1\mathring{\text{A}}$). Why is this ratio so large?
Figure shows a situation similar to the previous problem. All parameters are the same except that a battery of emf $\in$ and a variable resistance R are connected between O and C. The connecting wires have zero resistance. No external force is applied on the rod (except gravity, forces by the magnetic field and by the pivot). In what way should the resistance R be changed so that the rod may rotate with uniform angular velocity in the clockwise direction? Express your answer in terms of the given quantities and the angle $\theta$ made by the rod OA with the horizontal.
Jupiter has a mass 318 times that of the earth, and its radius is 11.2 times the earth's radius. Estimate the escape velocity of a body from Jupiter's surface given that the escape velocity from the earth's surface is $11.2km s^{-1}$.