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 ..
If the angle between two vectors A and B is 120Â°, then its resultant C will be
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 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 force is inclined at angle 60Â° to the horizontal. If its rectangular component in the horizontal direction is 50 N, then magn..
Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed..
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..
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..
a bomb of mass 9 kg explodes 2 pieces mass 3 kg and 6 kg
consider the following two statements.
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..
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 body of mass 16 kg. at rest explodes in to. two pieces of
a block of mass 0.50 kg is moving with speed 2.00 m/s on a smooth
a red LED emits light 0.1 watt
How many minimum number of coplanar vectors having different magnitudes can be added to give zero resultant?
If the scalar and vector products of two vectors A and B are equal in magnitude, then the angle between the two vectors is
Two equal vectors have a resultant equal to either of them, then the angle between them will be
Velocity and acceleration vectors of charged particle moving perpendicular to the direction of a magnetic fieal at given instant o..
Three concurrent coplanar forces 1 N 2 N and 3 N acting along different directions on a body
consider a two - particle system with particle having masses
Which of the following is not a vector quantity?
The magnitude of a vector on the additional of two vector 6 L + 4j
If a. b = la * bl, then tan will be
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
the angle between the z -axis and the vector (l + j + root 2 k) is
The angle between the z - axis the vector (l l + j + root 2 k)..
If A = B + C and the values of A B and C are 13 12 and 5 respectively then the angle between A and C will be
A particle is displaced from a position (2j - j + k) to another position (3l + 2j - 2k) under the action of the force of
consider three vector A = l + j - 2k, B = l + j + k, C = 2l - 3j + 4k. A vector X of from aA + BB (a and B are numbers ) is perpen..
an energy of 24.6 eV is require
Dute to a force of (6l + 2j) N the displacement of a body is (3l - j) m, then the work done is
If the angle between the vectors A and B is 0 then the value of the product (B * A) A is equal to
a body of a mass m while falling vertical downward under gravity
The coordinates of a particle moving in XY-plane at any instant of time t are x = 4t^2, y = 3t^2. The speed of the particle at tha..
two identical particle Move towards each other with velocity
A circle dise of radius r is removed from a bigger circular
the figure shows the position Time
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..
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