A balloon whose volume is 300m3 is filled with hydrogen. If the density of air…
A balloon whose volume is 300m3 is filled with hydrogen. If the density of air is 1.3 kgm-3,…
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An object moves in a circular path of radius 0.5m with a speed of 1ms-1…
An object moves in a circular path of radius 0.5m with a speed of 1ms-1 What is its…
An object of mass 20kg slides down an inclined plane at an angle of 30o…
An object of mass 20kg slides down an inclined plane at an angle of 30o to the horizontal.…
A block and tackle is used to raise a load of 250N through a vertical…
A block and tackle is used to raise a load of 250N through a vertical distance of 30m.…
A load is pulled at a uniform speed along a horizontal floor by a rope…
A load is pulled at a uniform speed along a horizontal floor by a rope at 45o to…
Calculate the total distance covered by a train before coming to rest if its initial…
Calculate the total distance covered by a train before coming to rest if its initial speed is 30ms-1…
A car starts from rest and moves with a uniform acceleration of 30ms-2 for 20s….
A car starts from rest and moves with a uniform acceleration of 30ms-2 for 20s. Calculate the distance…
If a freely suspended object is pulled to one side and released, it oscillates about…
If a freely suspended object is pulled to one side and released, it oscillates about the point of…
A rocket is fired from the earth’s surface to a distant planet. By Newton’s law…
A rocket is fired from the earth’s surface to a distant planet. By Newton’s law of universal gravitation,…
The energy of a photo having a wavelength of 10-10m is (h= 6.63 x 10…
The energy of a photo having a wavelength of 10-10m is (h= 6.63 x 10 -34Js, c =3.0…