Astring of length 2.83 m and linear mass density 0.500 g/m, and a string of length 3.09 m and linear mass density 0.242 g/m, are tied together and stretched to a tension of 150 n. how long, in seconds, will it take a transverse wave to travel the entire length of the two wires?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.