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A tuning fork of frequency 340 Hz is vibrated just above a cylindrical tube of length 120 cm. Water is slowly poured in the tube. If the speed of sound in air is 340 m/s, then the minimum height of water required for resonance is A tuning fork of frequency 340 Hz is vibrated just [...]

Two uniform ropes having linear mass densities m and 4m are joined to form a closed loop. The loop is hanging over a fixed frictionless small pulley with the lighter rope above Two uniform ropes having linear mass densities m and 4m are joined to form a closed loop. The loop is hanging over a [...]

In the figure shown a plate of mass 60 g is at rest and in equilibrium. A particle of mass m = 30 g is released from height 4.5 mg/k from the plate. The particle sticks to the plate. In the figure shown a plate of mass 60 g is at rest and in equilibrium. [...]

Two parallel conducting plates, each of area A, are separated by a distance d. Now, the left plate is given a positive charge Q. A positive charge q of mass m is released from a point near the left plate. Find the time taken by the charge to reach the right plate. are separated by [...]

In the arrangement shown in the given figure, pulleys are small and light and springs are ideal and K1 = 25 pie^2 N/m, K2 = 2K1, K3 = 3K1 and K4 = 4K1 are the force constants of the springs. Calculate the period of small vertical oscillations In the arrangement shown in the given figure [...]

Three identical metal plates with large surface areas are kept parallel to each as shown in figure (30-E8). The leftmost plate is given a charge Q, the rightmost a chrge _2Q and the middle one remains neutral. Find the charge appearing on the outer surface of the rightmost plate. the rightmost a chrge _2Q and [...]

A glass tube 1.0 m length is filled with water. The water can be drained out slowly at the bottom of the tube. If a vibrating tuning fork of frequency 500 c/s, is brought at the upper end of the tube, and the velocity of sound is 330 m/s, then the total number of resonances [...]

The electric field in a region is given by E = E0x /l i Find the charge contained inside a cubical volume bounded by the surfaces x = 0, x = a, y =a, z =0 , and z = a. Take E 0 = 5 x 10 ^3 N/C, l = 0.02 m , [...]

A block of mass m is tied to one end of a spring which passes over a smooth fixed pulley A and under a light smooth movable pulley B. The other end of the string is attached to the A block of mass m is tied to one end of a spring which passes over [...]

A long glass tube is held vertically in water . A tuning fork is struck and held over the tube . Strong resonances are observed at two successive lengths 0.50m and 0.84m above the surface of water . If the velocity of sound is 340m/s, then the frequency of the tuning fork is An air [...]