Hiro walks up a flight of stairs in his apartment building. later in the day, he runs up the same flight of stairs.

which statement about work and power describes hiro’s actions?

he did more work running than walking.
he did more work walking than running.
he had more power running than walking.
he had more power walking than running.

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?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Select the correct answer. what does the process of natural selection involve?