A lorry travels at 50 km/h. Given that the diameter of its wheel is 88 cm,find how many revolutions per minute the wheel is turning. GIve your answer to the nearest whole number.
November 7, 2015
A firm currently uses 40,000 workers to produce 180,000 units of output per day. The daily wage per worker is $100, and the price of the firm's output is $28. The cost of other variable inputs is $500,000 per day. (Note: Assume that output is constant at the level of 180,...
August 14, 2015
a hiker walk due east at 4km per hour and a second hiker starting from the same point walks 55 degree north-east at the rate of 6km per hour. H ow far apart will they be after 2 hours
February 15, 2013
heat released by thermal energy = 1560000J does not make sense. That is like saying that all of the energy was converted to heat!!! And shouldn't we be using sin(A), not cos(A)??
January 10, 2007