The pull of gravity on Mars is 3.7 m per second squared. if an astronaut lifts a 10 kg rock 1 m off the ground, just to see whats under it. How much work has the astronaut performed.

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

Which branches of natural science include the study of an organism that lived 10 million years ago

In a good thermo flask the main cause of heat loss is