The length of a rubber cord floating on water is 5 cm. The force needed to pull the cord out of water is ….N (surface tension of water is `7.2xx10^(-4)Nm^(-1)`).

A rectangular frame having dimensions "8 cm "xx " 4 cm " and width of 3 mm is initially placed with its largest face flat on water surface. Calculate the downward force acting on the frame due to surface tension of water ("Surface tension of water "= 7.2 xx 10^(-4)"Ncm"^(-1))

The length of needle floating on water is 2.5 cm. Calculate thhe added force required to pull the needle out of water (T=7.2xx10^(-4)N//cm)

The length of a needle floating on water is 2.5 cm. Calculate the added force required to pull the needle out of water [T=7.2xx10^(-2)N//m]

The length of needle floating on water is 2.5 cm. Calculate thhe added force required to pull the needle out of water (T=7.2xx10^(-2)N//m)

The length of needle floating on water is 2.5 cm. Calculate thhe added force required to pull the needle out of water (T=7.2xx10^(-2)N//m)

A rectangular plate of dimension 6 cm xx 4cm and thickness 2mm is placed with its largest face flat on the surface of water. Find the downward force on the plate due to surface tension. Surface tension of water is 7.0 xx 10^(-2)Nm^(-1) .

A small hollow sphere having a small hole in it is immersed in water to a depth of 50cm, before any water penetrates into it. Calculate the radius of the hole, if the surface tension of water is 7.2 xx 10^(-2) Nm^(-1) .

The length of a needle floating on water is 2.5 cm . The minimum force in addition to its weight needed to lift the needle above the surface of water will be (surface tension of water is 0.072 N//m )

The length of a needle floating on water is 2.5 cm . The minimum force in addition to its weight needed to lift the needle above the surface of water will be (surface tension of water is 0.072 N//m )

the langth of a needle floating on water is 2.5 cm . How much minimum force in addition to the weight of the needle, will be needed to lift the needle above the surface of water ? Surface tension of water =7.2 xx 10^(-4) "Ncm"^(-1).