An 865 kg airplane starts at rest on an airport runway at sea level. (a) what is the change in mechanical energy of the airplane if it climbs to a cruising altitude of 2230 m and maintains a constant speed of 90.0 m/s?

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.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these