Align the Earth so that it casts a shadow on the Moon. Does the Earth's shadow cover the moon? Is there evidence on an umbra and a penumbra? Please write it out

The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass

According to the tide table below what time of day will the highest tide occur?

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