R= radius of earth)
The height of a point vertically above the earth’s surface at which the acceleration due to gravity becomes 1% of its value at the surface is (Given, R= radius of earth)
18
Sep
The height of a point vertically above the earth’s surface at which the acceleration due to gravity becomes 1% of its value at the surface is (Given, R= radius of earth) R= radius of earth) The height of a point vertically above the earth's surface at which the acceleration due to gravity becomes 1% of [...]
A tuning fork of frequency 380 Hz is moving towards a wall with a velocity of 4 m/s Then the number of beats heard by a stationary listener between direct and reflected sound will be (velocity of sound in air is 340 m/s)
13
Sep
A tuning fork of frequency 380 Hz is moving towards a wall with a velocity of 4 m/s Then the number of beats heard by a stationary listener between direct and reflected sound will be (velocity of sound in air is 340 m/s) Energy required to move a body of mass m from an orbit [...]
A source of sound is travelling with a velocity of 30 ms towards a stationary observer. If actual frequency of source is 1000 Hz and the wind is blowing with velocity 20 ms in a direction at 60∘C with the direction of motion of source, then the apparent frequency heard by observer is (speed of sound is 340 ms)
13
Sep
A source of sound is travelling with a velocity of 30 ms towards a stationary observer. If actual frequency of source is 1000 Hz and the wind is blowing with velocity 20 ms in a direction at 60∘C with the direction of motion of source, then the apparent frequency heard by observer is (speed of [...]
Energy required to move a body of mass m from an orbit of radius 2R to 3R is (where M= mass of earth, R= radius of earth)
13
Sep
Energy required to move a body of mass m from an orbit of radius 2R to 3R is (where M= mass of earth, R= radius of earth) Energy required to move a body of mass m from an orbit of radius 2R to 3R is (where M= mass of earth R= radius of earth) September [...]