Pl
explain

a star appears to be red in the night sky. is the star traveling toward the earth or away from the earth? how do we know this?
5 points for correct direction
5 points for explanation

How hot is the suns corona? (integrated science)

Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.

State one important difference between a physical change and a chemical change?