Two particles a and b are initially at distance d apart. they start moving simultaneously at velocity v and u such that a always move towards b and b moves along fixed straight line which is perpendicular to initial direction of motion of a. then particles will meet after time a. (vd)/(v^2-u^2)b. (ud)/(u^2-v^2)c. d/(v^2+u^2)^1/2 d. vd/(v^2+u^2)

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

Why should seat belts not be mandatory quick plz

How many times did thomas edison mess up the light bulb