sound
by
Manoj Jaiswar ( PMJ Sir )
September 15, 2022
A certain sound wave in air has a speed 340 m/s and wavelength 1.7 m for this wave, calculate a) the frequency b) the period.
 the frequency b) the period. ){kind=link}
Posted by Manoj Jaiswar ( PMJ Sir )
The mass of the earth is 6 x 10²⁴ kg. The distance between the earth and the Sun is 1.5x 10¹¹ m. If the gravitational force between the two is 3.5 x 10²² N, what is the mass of the Sun?
the given can be listed as mass of earth , m = 6 x 10²⁴ kg. distance bet…
Heat energy is being produced in a resistance in a circuit at the rate of 100 W. The current of 3 A is flowing in the circuit. What must be the value of the resistance?
we can list out the given as, Power P= 100W current , I = 3A To find , R…
What will happen, if the magnetic field in moving coil galvanometer is non radial
In a radial magnetic field, the plane of the coil is always parallel to th…