A small helium tank claims to be able to fill 30 balloons to a volume of 3.15 Lat a pressure of 101 kPa. How many liters of helium will the tank be
able to produce at a pressure of 94.2 kPa? Assume that the
temperature
of the tank remains the same throughout.

Which type of wave can travel without a medium

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?

What are atoms of the same element with varying number of neutrons