Num vagão ferroviário, que se move com velocidade Vo=3ms com relação aos trilhos, estão dois meninos que correm um em direção ao outro, cada um com velocidade V=3m/s, com relação ao vagão. A velocidade dos meninos VA e VB, com relação aos trilhos, será, respectivamen

Write a question about how changing temperature affects the gas inside the sports ball

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

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.