Mechanical Prop...

Which graph present the variation of surface tension with temperature over small temperature ranges for coater.

When liquid medicine of testing S is to be put in the eye. It is done with the help of a dropper as the bulb on the top of the dropper is pressed a drop forms at the opening of the dropper we wish to estimate the size of the drop. We first assume that the drop formed at the opening is spherical because the requires a minimum increase in its surface energy. To determine the size we calculate the net vertical force due to surface tension T when the radius of the drop is R. When this force becomes smaller than the weight of the drop the drop gets detached from the dropper.

When liquid medicine of testing S is to be put in the eye. It is done with the help of a dropper as the bulb on the top of the dropper is pressed a drop forms at the opening of the dropper we wish to estimate the size of the drop. We first assume that the drop formed at the opening is spherical because the requires a minimum increase in its surface energy. To determine the size we calculate the net vertical force due to surface tension T when the radius of the drop is R. When this force becomes smaller than the weight of the drop the drop gets detached from the dropper.
After the drop detaches its surface energy is

Assertion : The concept of surface tension is help only for liquids.
Reason : Surface tension does not hold for gases.

Assertion : The water rises higher in a capillary tube of small diameter than in the capillary tube of large diameter.
Reason : Height through which liquid rises in a capillary tube is inversely proportional to the diameter of the capillary tube.

When a large bubble rises drom the bottom of a lake to the surface. Its radius double S. It atmospheric pressure in euqal to that of colurnn of colurnn of water height H then the depth of Lake is

A spherical solid ball of volume V is made of a material of density S. It is falling through a liquid of density S₂ (S₂ < S₁). Assume that the liquid opplies a viscous force on the ball that is proportional to square of its speed V. i.e. Fviscous = – KV² (K > 0) The terminal speed of the ball is

If there were no gravity which of the following will not be there for a fluid.

An engine pumps water continuously through a hose water leaves the hose with a velocity V and m is the mass per unit length of the water Jet what is the rate at which kinetic energy is imparted to water.