What wavelength is created when a 1.62 e -27kg particle
travels at 1.85 e 4 m/s?

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.