Aman of mass 50kg ascends a flight of stairs 5m high in 5 seconds. if acceleration due to gravity is 10ms-2, the power expended is

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?

What happens in a global convection cell

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c