reddeer782

(a) If the wavelength of an electron is 5.20 ✕ 10⁻⁷ m, how fast is it moving? km/s

(b) If the electron has a speed equal to 8.60 ✕ 10⁶ m/s, what is its wavelength? m

(a) If the wavelength of an electron is 4.63 ✕ 10−7 m, how fast is it moving?
 km/s

(b) If the electron has a speed equal to 8.20 ✕ 106 m/s, what is its wavelength?
 m

State the law of conservation of energy in a complete sentence.

(a) An electron has a kinetic energy of 6.00 eV. Find its wavelength.
 nm

(b) A photon has energy 6.00 eV. Find its wavelength.
 nm