1what properties of a star are needed to calculate the star's luminosity? a. size and apparent brightness b. mass and distance to the star. c. temperature and diameter of the star d. apparent brightness and distance to the star. 2.which cool and bright stars are located in the upper right of the h-r diagram? a. red giants b. neutron stars c. white dwarfsd. main sequence

Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

If a simple machine reduces the strength of a force, what must be increased?