Bonus gre question: the equation y = asin 2π (f-5), where a, t, and λ are positive constants, represents a wave whose (a) period is t (b) speed is (c) speed is (d) amplitude is 2a (e) velocity is in the negative z-direction

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.