Appendix j lists the stars that appear brightest in our sky. are most of these hotter or cooler than the sun? can you suggest a reason for the difference between this answer and the answer to the previous question? (hint: look at the luminosities.) is there any tendency for a correlation between temperature and luminosity? are there exceptions to the correlation?

Acar is going 5m/s around a bend with a radius of 10m/s why is the accelerant?

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Of is j/kg·k. if a 2.6 kg of isk to k,is ?