Discuss your doubts with the fellow mates preparing for various examination.
Two waves represented by y= a sin(wt - kx) and y= a cos(wt - kx) are superposed The resultant wave will have an amplitude?
A is the angle of the incline when a block of mass m just starts slipping down. The distance covered by the block if thrown up the incline with an initial speed g is ?Ans: v^2/4gsinA.
A particle is aimed at a mark on the horizontal plane through the point of projection. It falls 12 meters short when the angle of projection is 15 degrees while it overshoots the mark by 24 meters whe...
A body is dropped from a balloon moving with velocity 4m/s when the balloon is at a height of 120.5 m from the ground find the height of the body after 5 seconds from the ground
The sum of two forces is 18 N and resultant whose direction is at right angles to the smaller force is 12 N.the magnitude of the forces are
write the dimensions of a nd b in the relation P=b-x^2/at when P=power, x=distance,, t=time ?
What does the area under velocity time graph of a moving body represent?
A 900-kg compact car moving at 60 mi/hr has approximately 320 000 joules of kinectic energy. Estimate its new kinectic energy if it is moving at 30 mi/hr.
2 bodies of different masses are dropped from heights 2m and 8m respectively then the ratio of the time taken by them is _________ mv
A bird flies from (-3m,4m,-3m) to (7m, -2m, 3m) in xyz coordinate. the bird's displacement in unit vector is given by a)(4i+2j-6k) b)(10i-6j) c)(4i-2j) d)(10i...
A block A constrained to slide along the incline plane of the wedge B. Block A is attached with a string which passes through three ideal pulleys and connected to the wedge B. If the wedge is pulled t...
A drunkard is walking along a straight road. he takes 6 steps forward and 4 steps backward and so on. each step is 1 m long and takes 1 s. there is apit 12 m away. the drunkard will fall into th...
If instead of mass, length and time as fundamental quantities, we choose velocity, acceleration and force as fundamental quantities and express their dimensions by v, a and F ...
A train starts from rest and moves with a constant acceleration of 2.0 metre per second square for half a minute. The breaks are then applied and train comes to rest in 1 minute after applying brakes....
The magnitude of two vectors P and Q differ by 1. The magnitude of their resultant makes an angle of tan-1 (3/4)
Two forces of 12N and 9N are acting at a point . The ratio of the magnitude of maximum and minimum resultant is.......
A particle is made to move from the origin in threespells of equal distances, first along the x-axis,second parallel to y-axis and third parallel toz-axis. One of the forces acting on it is has consta...
Two cars get closer by 8m every second while travelling in the opposite directions. They get closer by 0.8m while travelling in the same direction.what are the speeds of two cars?
A particle is made to move from the origin in threespells of equal distances, first along the x-axis,second parallel to y-axis and third parallel toz-axis. One of the forces acting on it is has consta...
in vertical circular motion how tesion=0 for volicity to be minimum