What assumption can be made about the densities of two different spheres that have
an identical volume but very different masses?

What happens to the light rays when they hit the specimen?

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?

Argon, neon, and xenon are examples of