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Using the exact values for the sine and cosine of both 3π/4 and π/3, and the angle difference identity for cosine, find the exact value of cos(5π/12).
In this question take
A particle of mass 0.5 kg is suspended from a fixed point O by a light elastic string of natural length 1.5 m and modulus of elasticity 12 N. The particle is released from rest at O and next comes to rest at the point A. When the particle is at the point A, the extension in the string is x
metres. Show, using energy considerations, that 8x2 -10x-15=0
The diagram shows a light rod AB of length 4a rigidly joined at B to a light rod BC of length 2a so that the rods are perpendicular to each other and in the same vertical plane. The Centre O of AB is fixed and the rods can rotate freely about O in a vertical plane. A particle of mass 4m is attached at A and a particle of mass m is attached at C. The system rests in equilibrium with AB inclined at an acute angle θ to the vertical as shown. By taking moments about O, find the value of θ.
I conducted a study and am comparing the results of two sites where I put pitfall traps. One was a sheltered, upturned soil area (here more species were found - a wide range) and one was an open grassy area with not much shelter. Can someone explain different factors that may affect this other than light intensity? ANY HELP APRECIATED!!
what is the difference between research design and research methods? identify and describe three common types of each respectivly