The surface tension of water is 72 dyne/cm. Express is in SI units.

The surface tension of water is 72 dyne//cm. convert it inSI unit.

A glass plate of length 20 cm and breadth 0.2 cm just touches the water surface in a beaker. The surface tension of water is 72 dyne/cm. The weight of the glass plate is 25 g. The weight that must be placed in the right pan to counter pose the balance is

The density of a material is 0.8 g cm^-3 . Express it in SI units.

The surface tension of water is 75(dyne)/(cm) . Find the minimum vertical force required to pull a thin wire ring up (refer figure) if it is initially resting on a horizontal water surface. The circumference of the ring is 20cm and its weight is 0.1N

The density of iron is 7.87g"/"cm^(3) . Express it in SI units.

A small hollow sphere having a small hole in it is immeresed into water to a depth of 20 cm before any water penetrates into it. If the surface tension of water is 73 dyne cm^-1 , find the radius of the hole.