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According to the question, (12x/10) – (20x/18) = 1 Or, (12x × 9 – 20x × 5) ÷ 90 = 1 Or, (108x – 100x) ÷ 90 = 1 So, x = 11.25 Required value = 20 × 11.25 = 225
Electromagnetic waves travelling in a medium having relative permeability μr = 1.2 and relative permittivity Er = 0.012. The speed of electromagnetic w...
The motion of an object under free fall is an example of which of the following?
A particle of mass 0.2 kg is rotated in a circle of radius 0.5 m at 4 rad/s. Its centripetal force is:
If the distance between two consecutive crests is L, then the wavelength is given by______.
Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly i...
A porter lifts luggage of 20 kg from the ground and puts it on his head 2 m above the ground. Calculate the work done by him on the luggage (take g = 10...
A 4 cm wire carrying a current of 15 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27...
An electric dipole when held at 30 ֯ with respect to a uniform electric field of 103 N/c experience a torque of 12 × 10-26 Nm. C...
