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This document contains summaries of two past physics examination questions involving graphical methods: 1) A student plots log y vs log x from experimental data and finds it is a straight line. The relation between variables x and y that fits this is y = axm, where log a is the y-intercept. 2) A graph shows count rate A of a radioactive source over time t. The relationship between A and t that fits the exponential decay curve is A = 2.5e-0.1t.

Author

eltytan

Language

EN