These two waves travel along the same string: y1(x, t) = (4.60 mm) sin (2px – 400pt) y2(x, t) = (5.60 mm) sin (2px – 400pt + 0.80p rad). What are?(a) The amplitude and(b) The phase angle (relative to wave 1) of the resultant wave?(c) If a third wave of amplitude 5.00 mm is also to be sent along the string in the same direction as the flrst two waves, what should be its phase angle in order to maxrmrzethe amplitude of the new resultant wave?

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

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a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015