Which of the following is a derived quantity?
Which of the following is false?
A ball is dropped from a high rise platform at t=0 starting from rest. after 6seconds another ball is thrown downwards from the same platform with a speed v. The two balls meet at t=18s. what is the value of v?
A Cylindrical metallic rod in thermal contact with two reservoirs of heat at its two ends conducts an amount of Q heat in time t. The metallic rod is melted and the material is formed into a rod of half the radius of the original rod. What is the amount of heat conducted by the new rod, when placed in thermal contact with the two reservoirs in time t.
Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point?