If you use the spring from problem #3 and hang a 500 g mass on it, how far will it stretch? Convert your answer to cm. this is really important that I get this right for my final test tomorrow

Positrons are spontaneously emitted from the nuclei of

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.