Doors of a dam are 20m below the surface of water in the dam. If one door is opened what will be the speed of the water that flows out of the door ?

Doors of a dam are 20m below the surface of water in the dam. If one door is opened what will be the speed of the water that flows out of the door ?

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) December 28, 2024

The given can be listed as, h= 20m g = 9.8m/s² To find, v = ? Solution -

A light bulb is rated 100W for 220 V AC supply of 50 Hz. Calculate (a) resistance of the bulb. (b) the rms current through the bulb.

A light bulb is rated 100W for 220 V AC supply of 50 Hz. Calculate (a) resistance of the bulb. (b) the rms current through the bulb.

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) November 03, 2023

the given can be listed as  Power P = 100W To Find , Resistance R = ?                 …

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?

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) October 03, 2023

we can list out the given as, Power P= 100W current , I = 3A To find ,  Resistance R …

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 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?

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) October 03, 2023

the given can be listed as  mass of earth , m = 6 x 10²⁴ kg. distance between sun and…

The masses of the earth and moon are 6 x 10²⁴ kg and 7.4x10²² kg, respectively. The distance between them is 3.84 x 10⁵ km. Calculate the gravitational force of attraction between the two?

The masses of the earth and moon are 6 x 10²⁴ kg and 7.4x10²² kg, respectively. The distance between them is 3.84 x 10⁵ km. Calculate the gravitational force of attraction between the two?

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) October 03, 2023

the data can be listed as mass of earth , M = 6 x 10²⁴ kg mass of moon , m = 7.4 x 10²…

A ball falls off a table and reaches the ground in 1s. Assuming g = 10 m/s², calculate its speed on reaching the ground and the height of the table.

A ball falls off a table and reaches the ground in 1s. Assuming g = 10 m/s², calculate its speed on reaching the ground and the height of the table.

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) September 29, 2023

we can list the given data as, initial velocity , u = 0m/s time t = 1s g = 10m/s² To f…

An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s²

An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s²

Manoj Jaiswar ( PMJ Sir )
by Manoj Jaiswar ( PMJ Sir ) September 28, 2023

We can list the data as, height covered or distance covered, s = 500m g = 10m/s² To fi…