A Boat of bottom area 2m2 is pushed by a force of 500N.It moves with a constant V of 10ms-1.If the mass of the boat is 50kg and the coefficient of viscosity of water is 1*10-3, what is the depth of the pond.
December 26, 2013
this is regarding food chains.will the impact of removing all the organisms in a trophic level be different for different trophic levels?can the organisms of any trophic level be removed without causing any damage to the ecosystem?
September 27, 2007
will the impact of removing all the organisms in a trophic level be different for different levels?can the organisms of any trophic level be removed without causing any damage to the ecosystem?
September 20, 2007
If a trait A exists in 10% of the population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait would have arisen earlier?
August 28, 2007
The probability of getting a royal flush when you deal out a five card hand is 1.54 × 10^-6. Suppose you deal out 8 × 10^6 hands, what is the probability that you will get 0 royal flushes? Make a list of the probabilities that you will get n royal flushes, for n=1 ...
June 29, 2007
You and a friend play the following game: You pay your friend $3 each turn and then flip a fair coin. It its tails, your friend pays you $(2^n), where n is the number of times youve flipped the coin, and the game ends. If its heads, you have the choice of ...
June 29, 2007