Stone dropped from top of a tower 100m high. At same instant another stone is thrown vertically from base of the tower with a velocity of 25m/s. When and where will the two stones meet? Given g =10 m/s^2
February 13, 2015
the ray of son strike the surfaces of a lake at an angle of incidence of 30°.find the angle through which the rays are deviated when they enter water of refrective index 1.33.
November 11, 2014
Liz uses 19 connecting cubes to make a model of house. The house model is in the shape of a rectangle and is one cube high. How many different ways could Liz make the model of the house?
October 26, 2014
Two masses m and 2m are attached with each other by a rope passing over a frictionless and massless pulley. If the pulley is accelerated upwards with an acceleration a, what is the value of T?
February 1, 2011
1 What are the reasons of declines in employee job satisfaction? 2 What factors differentiate good decision makers from poor ones? 3 When do groups make better decisions than individuals? 4 What are the pros and cons for focusing on the distant future and the heavy ...
January 9, 2011
If A=1+r^a+r^2a+r^3a+.......................to infinity B=1+r^b+r^2b+................to infinity then find a/b=????? Is r^2a supposed to be r^(2a) or a*r^2? In other words, is the a part of the exponent? what the heck is that? exponents are like 2 cubed or 2 squared. 2 cubed= ...
November 11, 2006