WILL MARK BRAINLIEST AND RATE

Why does a siren have a higher pitch as it approaches you?

The amplitude of the sound wave is increased.

The crests of the sound wave are spaced closer together.

The troughs of the sound wave are farther apart.

The period of the sound wave is increased.

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

If steel is more dense that lake water, why can a boat float

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.