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An air bubble of radius 5mm rises through a vat of syrup at a steady speed 2mm//s. If the syrup has a density of 1.4xx10^(3)kg//m^(3), what is its velocity ?
24
Aug
An air bubble of radius 5mm rises through a vat of syrup at a steady speed 2mm//s. If the syrup has a density of 1.4xx10^(3)kg//m^(3), what is its velocity ? An air bubble of radius 5mm rises through a vat of syrup at a steady speed 2mm//s. If the syrup has a density of 1.4xx10^(3)kg//m^(3) [...]
A stone is thrown at an angle of 45∘ to the horizontal with kinetic energy K. The kinetic energy at the highest point is
24
Aug
A stone is thrown at an angle of 45∘ to the horizontal with kinetic energy K. The kinetic energy at the highest point is A stone is thrown at an angle of 45∘ to the horizontal with kinetic energy K. The kinetic energy at the highest point is August 24, 2020 Category: Chapter 7 - [...]
A point moves in xy-plane according to equation x = at, y = at (l – bt) where a and b are positive constants and t is time. The instant at which velocity vector is at π/4 with acceleration vector is given by:
24
Aug
A point moves in xy-plane according to equation x = at, y = at (l – bt) where a and b are positive constants and t is time. The instant at which velocity vector is at π/4 with acceleration vector is given by: A point moves in xy-plane according to equation x = at y [...]
If the kinetic energy of a body is increased by 300%, then percentage change in momentum will be
24
Aug
If the kinetic energy of a body is increased by 300%, then percentage change in momentum will be If the kinetic energy of a body is increased by 300% then percentage change in momentum will be August 24, 2020 Category: Chapter 7 - Work, Energy and Power , NEET Last 32 Years Solved 1988 - [...]
A particle of mass m1 is moving with a velocity v1 and another particle of mass m2 is moving with a velocity v2. Both of them have the same momentum but their different kinetic energies are E1 and E2 respectively. If m1 m2 then
24
Aug
A particle of mass m1 is moving with a velocity v1 and another particle of mass m2 is moving with a velocity v2. Both of them have the same momentum but their different kinetic energies are E1 and E2 respectively. If m1 m2 then A ball of mass 2kg and another of mass 4 kg [...]
Two cars cover the distance between two stations in 2 hours. The first car covers the first half of the distance at 20 kmph and the second half at 60 kmph and the second car covers the distance with uniform acceleration, starting with a velocity of 10 kmph.At what instant/instants will the two cars have the same velocity ?
24
Aug
Two cars cover the distance between two stations in 2 hours. The first car covers the first half of the distance at 20 kmph and the second half at 60 kmph and the second car covers the distance with uniform acceleration, starting with a velocity of 10 kmph.At what instant/instants will the two cars have [...]
Eight identical droplets, each falling under gravity in the earth’s atmosphere with terminal velocity v, combine to form a single drop. The terminal velocity of single drop and drag force on it are calculated. Find the correct statement from the following.
24
Aug
Eight identical droplets, each falling under gravity in the earth’s atmosphere with terminal velocity v, combine to form a single drop. The terminal velocity of single drop and drag force on it are calculated. Find the correct statement from the following. combine to form a single drop. The terminal velocity of single drop and drag [...]
A shell is fired from a cannon, it explodes in mid air, its total
24
Aug
A shell is fired from a cannon, it explodes in mid air, its total A shell is fired from a cannon it explodes in mid air its total August 24, 2020 Category: Chapter 7 - Work, Energy and Power , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics [...]
A man with a constant time of reaction can stop his car within 30 m when its speed is 72 kmph and within 10 m when its speed is 36 kmph.What is the distance within which he can stop his car when speeding at 54 kmph ?
24
Aug
A man with a constant time of reaction can stop his car within 30 m when its speed is 72 kmph and within 10 m when its speed is 36 kmph.What is the distance within which he can stop his car when speeding at 54 kmph ? A car accelerates from rest at a constant [...]
A child is swinging a swing. Minimum and maximum heights fo swing from the earth’s surface are 0.75 m and 2 m respectively. The maximum velocity of this swing is
24
Aug
A child is swinging a swing. Minimum and maximum heights fo swing from the earth’s surface are 0.75 m and 2 m respectively. The maximum velocity of this swing is A child is swinging a swing. Minimum and maximum heights fo swing from the earth's surface are 0.75 m and 2 m respectively. The maximum [...]