Which two pieces of evidence most directky support the idea that all matter in the universe began as a sibgke point of energy.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

What is the increase in density of a medium due to wave travel?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.