Q51. Give two examples of situations in which applied force causes a change in the shape of an object.
Q52. What are the various effects of force?
Q53. Why a fountain of water is created at the leaking joints or holes of pipes of the main water supply line?
Q54. Why does the liquid rise in a syringe when its piston is pulled up?
How does a liquid medicine enter a syringe?
Q55. Why nose bleeding occurs at high altitudes?
Why do mountaineers suffer from nose bleeding at high altitudes?
Q56. Does application of a force would always result in a change in the state of motion of the object?
Q57. Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
Q58. Why atmospheric pressure decreases as we go higher up above the earth's surface?
Q59. What happens when a charged plastic straw is brought near another uncharged plastic straw?
Q60. Why does a plastic comb rubbed with dry hair attract tiny pieces of paper?
Q61. What is meant by saying that force is due to interaction?