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convert 30km/h = 8.3 m/s

calculate initial vertical speed U_v = 4.15m/s, calculate initial horizontal speed = 7.19m/s

apply suvat equations v = u + at, s = ut + 1/2at^...

answer should include the use of helicase to 'unwind' DNA, breaking of hydrogen bonds, template and/or coding strand, free RNA nucleotides in the nucleus binding to exposed bases, attraction of base pairs...

answers can include explanations using research on workplace stress, life changes or daily hassles (more difficult). Holmes and Rahe is likely to come up or SRRS scale, any applicable research can be awar...

(x-2)(x+2) because the x values cancel out leaving the integer and x^2 value.

Volume=81 cm³ 

b=81/2x² 

L=4x+4(2x)+ 4(b)

L=4(x)+4(2x)+4(81/2x²) 

L=12x+ 162/x²