How much heat is absorbed by a lead block, heated from -15 °C to 450 °K? (The Specific Heat of Lead = 130 J/kg*°K)

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Which type of basaltic lava flow has a fairly smooth

Why do astronauts in the space shuttle weigh less?