Categorize the particles according to whether they are found in the nucleus or the electron cloud.
neutral particles
Nucleus
Electron Cloud
positively charged particles
negatively charged particles

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Which of the following list the divisions of the geologic time scale in order from longest to shortest