A balloon containing 6.23 L of air is filled at ground level to a pressure of 1.0 atm. It is carried up a steep mountain. About halfway up the mountain, the balloon's new volume is 6.70 L. What is the air pressure at this altitude?

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Which characteristics can be used to differentiate star systems? check all that apply.

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms