Một bể nước cao 1m mực nước cách miệng bể 10cm a, tính áp xuất do nước gây ra tại điểm A cách miệng bể 45cm
b. tính áp xuất do cột nước gây ra tại đáy bể biết d nước bằng 10000n/m

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

How many atoms of nitrogen are in the chemical formula ni(w on