MP10-1: Resolving pixels on the computer screen (spoiler)

For part A, convert to millimeters as you go with each unit. Use the special formula from the hints for a circular aperture.

For part B, convert to meters as you go.

MP10-1: Understanding the propogation of light (spoiler)

MP10-1: Geometry and reflections (spoiler)

MP10-1: Diffuse Reflection (spoiler)

MP9: Double slit 2 (spoiler)

Use (2 lambda) for the path difference for the second maximum, and (3.5 lambda) for the path difference for the 4th minimum.

MP9: Doorway Diffraction (spoiler)

This is a straightforward plug and chug using the diffraction formula asin (theta) = m * lambda. We are trying to find the 1st minimum so m = 1.

You will find the formula (wavelength) * (frequency) = (wave speed) formula useful here.

MP9: Resolving Power of the Eye (spoiler)

Use the hints; this is a straightforward plug and chug.