The student obtains a series of measurements for current and potential differenc State the dependent variable in this investigation.
Give two ways through which the student can ensure that the results are reliable
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2) a cubical block of stone is lowered at a steady rate into the ocean by a crane, always keeping the top and bottom faces horizontal. which one of the following graphs best describes the buoyant force b on this block as a function of time t if the block just enters the water at time t = 0 s?