A stone is whirled at the end of a rope 30cm long, makes 10 complete revolution in 2 seconds. Find (1) the angular velocity in radians per seconds. (2) the linear speed, (3) the distance covered in 5 seconds
September 12, 2014
A small grill can hold two hamburgers at a time. If it takes 10 minutes to cook one side of a hamburger, and 5 minutes to cook the other side, then what is the shortest time needed to cook both sides of three hamburgers?
September 23, 2013
sin^2x + cos^2x = 1 from the above,we make cos^2x the subject of the formula: cos^2x = 1- sin^2x......................(1) substituting the above into the left hand side of original equation: sin^2x - ( 1 - sin^2x ) expanding the bracket and noting that - times - equals + sin^...
January 10, 2013