A 0.03 kg silver fork cools from 373.15 K to 323.15 K. How much heat is lost by the fork? Specific heat of silver is 235 J/kg*K.

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