A student measured the density of Galena to be 7.9g/cm3 however the known density of Galena is 7.6g/cm3 . Calculate the percent error of the measurements.

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

Positrons are spontaneously emitted from the nuclei of

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?