The heliocentric theory suggests blank

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?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Which component of the earth’s atmosphere is decreased due to photosynthesis?