3. A continuous helium-neon laser emits a beam that diverges at an angle of 4.2 x 10 rad. Calculate the width of a cross section of the laser beam after it has traveled (a) 1.0 km and (b) to the moon.
3. A continuous helium-neon laser emits a beam that diverges at an angle of 4.2 x 10 rad. Calculate the width of a cross section of the laser beam after it has traveled (a) 1.0 km and (b) to the moon.
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can you answer number 3?
Transcribed Image Text:2. List the | nlmm, ) states available to an electron in a 45 subshell.
3. A continuous helium-neon laser emits a beam that diverges at an angle of 4.2 × 10ʻ rad. Calculate
the width of a cross section of the laser beam after it has traveled (a) 1.0 km and (b) to the moon.
4. The mass of one mole of iron (6.0 × 10" atoms) is 0.056 kg and iron's density is 7.9 × 10' kg/m’.
(a) Show that the volume of space occupied by one iron atom is 1.2 × 10" m’. (b) Calculate the
volume of space occupied by the lithium atom, the metal of at least density 0.53 × 10' kg/m'. The
mass of one mole of lithium atoms is 0.0069 kg.
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