Question #54178

(i) Calculate the power radiated (in Watts) by the surface of a cylindrical wire of length 5.0 cm

and radius 0.12 mm that is heated to 3300 K by an electric current. (ii) The energy required for

the ionization of a certain atom is 3.44 aJ (aJ = 10-18 J). The absorption of a photon of unknown

wavelength ionizes the atom and ejects an electron with velocity 1.03 Mm s-1

(1Mm = 106m).

Calculate the wavelength (in nanometer) of the incident radiation.

and radius 0.12 mm that is heated to 3300 K by an electric current. (ii) The energy required for

the ionization of a certain atom is 3.44 aJ (aJ = 10-18 J). The absorption of a photon of unknown

wavelength ionizes the atom and ejects an electron with velocity 1.03 Mm s-1

(1Mm = 106m).

Calculate the wavelength (in nanometer) of the incident radiation.

Expert's answer

## Comments

## Leave a comment