A body of mass 1000 kg is moving horizontally with a velocity 50 ms^-1. A mass of 250 kg is added. Find the final velocity.
Two trains, each of length 200 m are running on parallel tracks. One overtakes the other in 20 s and one crosses the other in 10 s..
Two equal forces (P each) act at a point inclined to each other at an angle of 120Â°. The magnitude of their resultant is
The (x, y, z) coordinates of two points A and B are given respectively, as (0, 3, -1) and (â€“2, 6, 4). The displacement vect..
A force is inclined at angle 60Â° to the horizontal. If its rectangular component in the horizontal direction is 50 N, then magn..
The sum of two vectors A and B is at right angle to their difference. Then
A is a vector with magnitude A. then the unit vector a in the direction of vector A is
If the angle between two vectors A and B is 120Â°, then its resultant C will be
The square of resultant of two equal forces is three times their product. Angle between the forces is
The resultant of two vectors P and Q is R. If the magnitude of Q is doubled, then the new resultant becomes perpendicular to P. Th..
A train is moving slowly on a straight track with a constant speed of 2 ms^-1. A passenger in the train starts walking at a steady..
a nucleus disintegrates into two
Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed..
A boat crosses a river of width 1 km by shortest path in 15 min. If the speed of boat in still water is 5 kmh-1, then what is the ..
A motorboat covers a given distance in 6 h moving downstream on a river. It covers the same distance in 10 h moving upstream. The ..
A gun fires N bullets per sec, each of mass m with velocity v. The force exerted by the bullets on the gun is
A passenger train is moving at 5 ms^-1 . An express train is travelling at 30 ms^-1, on the same track and rear side of the passen..
consider the following two statements.
If a. b = la * bl, then tan will be
a red LED emits light 0.1 watt
for a radioactive material its activity
The rate of mass of the gas emitted from rear of a rocket is initially 0.1 kgs^-1. If the speed of the gas relative to the rocket ..
a block of mass 0.50 kg is moving with speed 2.00 m/s on a smooth
a bomb of mass 9 kg explodes 2 pieces mass 3 kg and 6 kg
a body of mass 16 kg. at rest explodes in to. two pieces of
A train of 150 m length is going towards North direction at a speed of 10 ms^-1. A parrot flies at a speed of 5 ms6-1 towards Sout..
How many minimum number of coplanar vectors having different magnitudes can be added to give zero resultant?
Three concurrent coplanar forces 1 N 2 N and 3 N acting along different directions on a body
Two equal vectors have a resultant equal to either of them, then the angle between them will be
an energy of 24.6 eV is require
Which of the following is not a vector quantity?
A gun fires bullets each of mass lg with velocity of 10 ms^-1 by exerting a constant force of 5 g weight. Then, the number of bull..
If the scalar and vector products of two vectors A and B are equal in magnitude, then the angle between the two vectors is
if the mass of the particle.....passage 3
Velocity and acceleration vectors of charged particle moving perpendicular to the direction of a magnetic fieal at given instant o..
consider a two - particle system with particle having masses
If A = B + C and have A B and C scalar magnitudes of 5 4 and 3 units respectively then the angle between A and C is
two identical particle Move towards each other with velocity
radiation of wavelength
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