A U-shaped wire is dipped in a soap solution, and removed. The thin soap film formed between the wire and the light slider supports a weight of `1.5 xx10^-2` N (which includes the small weight of the slider). The length of the slider is 30 cm. What is the surface tension of the film?

In figure (a) shows a thin liquid film supporting a small weight = 4.5 xx 10^-2 N. What is the weight supported by a film of the same liquid at the same temperature in Fig. (b) and (c)? Explain your answer physically.

Calculate the work done in blowing o soap bubble of radius 5 cm(surface tension of soap solution= 3xx10^-2 N/m).

A wire with mass per unit length 0.05 gcm^-1 is stretched between two rigid supports with tension of 4.5xx(10)^7 dynes.it is observed that the wire resonates at a frequency of 420 Hz.The next frequency at which the wire resonates is 492 Hz.Find the length of the wire.

A brass wire 1.8 m long at 27^@C is held taut with little tension between two rigid supports. If the wire is cooled to a temperature of 39 ^@C , what is the tension developed in the wire, if its. diameter is 2.0 mm? Co-efficient of linear expansion of brass = 2.0 XX 10^-5 K^-1 Young’s modulus of brass = 0.91xx10^11 P

what percentage of length of a wire will increase by applying the stress of 1kg.weight/mm^(2) on it ?( Y = 10^11 N/m^2), 1 Kg Wt =9.8 N

Calculate the amount of work done for a wire which area of cross section 10^-6m^2 and length 1.5m to increase the length 4 xx 10^-3 m. Young's modules of elasticity 2 xx 10^(11N//m^2) .

A copper wire is held at two ends by rigid supports.At 30^0 C the wire is just taut,with negligble tension.Find the speed of transverse wave in the wire at 10^0 C[ alpha =1.7xx(10)^-5/^0C , gamma=1.3xx(10)^11N/(m)^2 , rho=9xx(10)^3kg/(m)^3 ]