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**Question 11:**
Calculate the uncertainty in the speed of a ball of mass 500 g that is known to be within 1.0 nm of a certain point on a bat.

**Question 12:**
The Planck distribution gives the energy in the wavelength range dλ at the wavelength λ. Calculate the energy density in the range from 650 nm to 655 nm inside a cavity of volume 100 cm³ when the temperature is 280°C.

Expert Solution

Step 1

Given, Mass m = 500 g = 0.5 kg

Uncertainty in position $Δ x$ = 1.0 um = 1.0 × 10^-6m

Uncertainty in velocity $Δ V$ = ?

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