[" 12.एक Kundali स्व-प्रेरकत्व "0.5" Henry is. At what frequency "],[" its प्रेरण-प्रतिघात "3140" Om होगा? answer : "1000" Hearts "]

At what frequency will a 0.5 H inductor have a reactance of 1000 Omega ?

At what frequency will a 0.5 H inductor have a reactance of 1,000 ohm?

Coefficient of static friction between a coin and gramophone disc is 0.5. Radius of the disc is 8cm . Initially the centre of the coin is pi cm cm away from the centre of the disc. At what minimum frequency will it start slipping from there? By what factor will the answer change if the coin is almost at the rim? (Use g =pi^2ms^-2) .

A cylinder of relative density 0.7 is 0.5 m high and the radius of its base is 1m . It floats in water with its axis vertical . Find the legth of the cylinder inside water. What force is needed to raise it by 1 cm ? Denstiny of water =1000 kg m^(-3)

In a standing wave experiment , a 1.2 - kg horizontal rope is fixed in place at its two ends ( x = 0 and x = 2.0 m) and made to oscillate up and down in the fundamental mode , at frequency of 5.0 Hz . At t = 0 , the point at x = 1.0 m has zero displacement and is moving upward in the positive direction of y - axis with a transverse velocity 3.14 m//s . What is the correct expression of the standing wave equation ?

A space station 960 m in diameter rotates fast enough that the artificial gravity at the outer edge is 1.5 g (a) What is the frequency of rotation ? (b) What is its period ? (c) At what distance from the center will the artificial gravity be 0.75 g ? Take g=10m//s^(2)