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A particle is projected from the top of a cliff, 20m above the sea level at an angle of 30 degrees above the horizontal at 20m/s. At what vertical speed does it hit the water?

Using SUVAT equations:s = -20mu = 20sin(30) = 10m/sv = ?a = -9.8m/s^2t = ?v^2 = u^2 + 2asv = sqrt(100 + 40x9.8)= 22.2m/s
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Blue-spotted tree monitors (Varanus macraei) are found on the Indonesian island of Batanta. Describe how you could use the mark-release-recapture method to estimate the number of Varanus macraei on the island. (4 marks)

1.Capture/collect sample, mark and release 2.Method of marking does not harm/distinguish lizard 3.Leave sufficient time for lizards to (randomly) distribute (on island) before collecting a second sample 4.(P...
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Why is Utilitarianism the best approach to business ethics?

John Stuart Mill's idea of rule utilitarianism is an ideal approach to business ethics due to consideration of not only the consumer but the employees. Rule utilitarianism is the belief that higher intellect...
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Name and draw the mechanism where bromoethane reacts with NaOH to form ethanol.

Mechanism: Nucleophilic Substitution Electronegativity is the ability of an atom to attract a bonding pair of electrons. As bromine is more electronegative than carbon, the C-Br bond is polar, meaning the el...
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Solve x^3+2*x^2-5*x-6=0

First find a root of the function: f(x)=x^3+2x^2-5x-6 f(2)=(2)^3+2*(2)^2-5*(2)-6 =0. Therefore, (x-2)(x^2+Ax+3)=0 where A is an unkown constant. Compare x^2 coeffecients: A-2=2, A=4. So (x-2)(x^2+4x+3)=0. Th...
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