Which group of items all contain a transparent part with at least one curved surface to refract light? a. a human eye, a diving mask, and a telescope b. a microscope, a camera, and a window pane. c. an owl's eye, a smart phone, and a magnifying glass d. an electron microscope, safety goggles, and eyeglasses

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.