What increase in temperature is needed to increase the length of an aluminum meterstick by 1.0 mm? 42 K
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The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Why does a smaller car get better gas mileage than a bigger one?

When a person spins a bucket of water in a circle, the force acting on the bucket to keep the water inside is called