Q1. Monochromatic light from a distant source is incident on a slit 0.750 {rm mm} wide. On a screen 2.00 {rm m} away, the distance from the central maximum of the diffraction pattern to the first least amount is measured to be 1.35 {rm mm}.
Q2. An 8.2 kg block of metal is suspended from a scale and immersed in water. The dimensions of the block are 12.0 cm 9.0 cm 9.0 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of water.