Physics-
General
Easy
Question
A gun throws a shell with a muzzle speed of 98 m/s. When the gun is elevated at 45°, the range is observed as 900m. Due to air resistance its range is decreased by ..
- 40m
- 80m
- 120m
- 160m
The correct answer is: 80m
If there is no air resistance, expected horizontal range is
Actual range 
Range is decreased by = 980-900
= 80m
Related Questions to study
physics-
A boy playing on the roof of a 10m high building throws a ball with a speed of 10m/s at an angle of 30° with the horizontal. How far from the throwing point the ball be at a height of 10m from the ground ?
A boy playing on the roof of a 10m high building throws a ball with a speed of 10m/s at an angle of 30° with the horizontal. How far from the throwing point the ball be at a height of 10m from the ground ?
physics-General
physics-
For a projectile the value which depends on the vertical component of velocity of projection?
For a projectile the value which depends on the vertical component of velocity of projection?
physics-General
physics-
A hose pipe lying on the ground shoots a stream of water upward at an angle of 60° to the horizontal at a speed of 20m/s The water strikes a wall 20m away at a height of.. (g=10m/s²)
A hose pipe lying on the ground shoots a stream of water upward at an angle of 60° to the horizontal at a speed of 20m/s The water strikes a wall 20m away at a height of.. (g=10m/s²)
physics-General
physics-
At the highest point on the trajectory of projectile its ..
At the highest point on the trajectory of projectile its ..
physics-General
physics-
A bomb is released by a horizontal flying aeroplane Then the trajectory of bomb is ...
A bomb is released by a horizontal flying aeroplane Then the trajectory of bomb is ...
physics-General
physics-
If the change in the value of ‘g’ at a height ‘h’ above the surface of the earth is same as at a depth ‘x’ below it when both ‘x’ and ‘h’ are much smaller than the radius of the earth, then.
If the change in the value of ‘g’ at a height ‘h’ above the surface of the earth is same as at a depth ‘x’ below it when both ‘x’ and ‘h’ are much smaller than the radius of the earth, then.
physics-General
physics-
The escape velocity for a body projected vertically upwards from the surface of earth is 11km/s If the body is projected at an angle of 45° with the vertical, the escape velocity will be.
The escape velocity for a body projected vertically upwards from the surface of earth is 11km/s If the body is projected at an angle of 45° with the vertical, the escape velocity will be.
physics-General
physics-
Two identical trains A and B move with equal speeds on parallel tracks along the equator. A moves from east to west and B moves from west to east. Which train will exert greater force on the track?
Two identical trains A and B move with equal speeds on parallel tracks along the equator. A moves from east to west and B moves from west to east. Which train will exert greater force on the track?
physics-General
physics-
The force of attraction between two bodies separated by a distance ‘d’ is ‘F’ The distance for which the force of attraction between them is 64F is.
The force of attraction between two bodies separated by a distance ‘d’ is ‘F’ The distance for which the force of attraction between them is 64F is.
physics-General
physics-
An ideal monoatomic gas is carried around the cycle ABCDA as shown in the figure. The efficiency of the gas cycle is :
An ideal monoatomic gas is carried around the cycle ABCDA as shown in the figure. The efficiency of the gas cycle is :
physics-General
physics-
A mass of ideal gas is first expanded isothermally and then compressed adiabatically to its original volume.
What further simplest operation must be performed on the gas to restore it to its original state.
A mass of ideal gas is first expanded isothermally and then compressed adiabatically to its original volume.
What further simplest operation must be performed on the gas to restore it to its original state.
physics-General
physics-
A volume (V)-temperature (T) diagram was obtained when a given mass of gas was heated. During the heating process from state 1 to state 2, the pressure :
A volume (V)-temperature (T) diagram was obtained when a given mass of gas was heated. During the heating process from state 1 to state 2, the pressure :
physics-General
physics-
The distribution of relative intensity I (
) of blackbody radiation from a is shown in the figure. If the Wien solid body versus the wavelength displacement law constant is 2.9 × 10-3 mK, what is the approximate temperature of the object?
The distribution of relative intensity I () of blackbody radiation from a is shown in the figure. If the Wien solid body versus the wavelength displacement law constant is 2.9 × 10-3 mK, what is the approximate temperature of the object?
physics-General
physics-
Five rods of same material and same length are joined as shown. Cross-section of rods ab, ad and bc are A, 2A and 3A respectively. Ends a and c are maintained at temperatures 200°C and 0°C respectively.
If x has the value calculated in above question. Then temperature of junction b or d is:
Five rods of same material and same length are joined as shown. Cross-section of rods ab, ad and bc are A, 2A and 3A respectively. Ends a and c are maintained at temperatures 200°C and 0°C respectively.
If x has the value calculated in above question. Then temperature of junction b or d is:
physics-General
physics-
Five rods of same material and same length are joined as shown. Cross-section of rods ab, ad and bc are A, 2A and 3A respectively. Ends a and c are maintained at temperatures 200°C and 0°C respectively.
For what cross-section x of rod dc there will be no heat flow through rod bd.
Five rods of same material and same length are joined as shown. Cross-section of rods ab, ad and bc are A, 2A and 3A respectively. Ends a and c are maintained at temperatures 200°C and 0°C respectively.
For what cross-section x of rod dc there will be no heat flow through rod bd.
physics-General
