A police car travelling at 30.0 m/s sounds its 525 Hz siren as it approaches a person standing on the
side of the road. If the speed of sound is 344 m/s, what frequency is heard by the person?
(A) 483 Hz
(B) 525 Hz
(C) 555 Hz
(D) 575 Hz

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.

Drag each tile to the correct box. tiles bra i sequence

** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils