What type of wave is a sound wave? electromagnetic
compressional
transverse
infrared

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

In a good thermo flask the main cause of heat loss is

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?