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The following observations were taken for dtermining the surface tension of water by capillary tube method: diameter of capillary , D = 1.25 × 10^−2 m and rise of water in capillary , h = 1.45 × 10^−2 m. Taking g = 9.80 m/s^2 and using the relation T = (rgh/2) × 10^3 N/m, what is the possible error in measurement of surface tension T?
12
Oct
The following observations were taken for dtermining the surface tension of water by capillary tube method: diameter of capillary , D = 1.25 × 10^−2 m and rise of water in capillary , h = 1.45 × 10^−2 m. Taking g = 9.80 m/s^2 and using the relation T = (rgh/2) × 10^3 N/m, what [...]
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D = 1.25 × 10^−2 m and rise of water in capillary ,
h = 1.45 × 10^−2 m. Taking g = 9.80 m/s^2 and using the relation T = (rgh/2) × 10^3 N/m ,
The following observations were taken for dtermining the surface tension of water by capillary tube method: diameter of capillary ,
what is the possible error in measurement of surface tension T? ,
On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius r with the bottom of the vessel. If r<<R and the surface tension of water is T, value of r just before bubbles detach is: (density of water is ρw)
12
Oct
On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius r with the bottom of the vessel. If r<<R and the surface tension of water is T, value of r just before bubbles detach [...]
Assume that a drop of liquid evaporates by decreases in its surface energy, so that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is T, density of liquid is ρ and L is its latent heat of vaporization.
12
Oct
Assume that a drop of liquid evaporates by decreases in its surface energy, so that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is T, density of liquid is ρ and L is its latent heat of vaporization. Assume that a drop [...]
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5 × 10^−2 N (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquid film is
12
Oct
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5 × 10^−2 N (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquid film is each of radius 2 mm fall through aiir at a terminal velocity [...]
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