Carry out the calculations asked for below

PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

Carry out the calculations asked for below. Give every numerical answer in proper scientific notation and quote the correct number of significant figures. (a) Convert 0.000 3750.000\,375 to scientific notation and state its significant figures. (b) Evaluate (2.45×105) (3.1×10−3)÷(7.00×102)\displaystyle (2.45\times10^{5})\,(3.1\times10^{-3})\div(7.00\times10^{2}). (c) Subtract 6.52×10−46.52\times10^{-4} from 2.7×10−32.7\times10^{-3}. (d) Using the results obtained in parts (b) and (c), calculate their ratio and state the order of magnitude of this ratio.

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