The sun is made up mostly of gas material. liquid material. solid material. plasma material.

How are calculation for velocity and speed different

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?

If frequency goes up, what happens to wavelength? does it get shorter or longer?