Homework Statement
Heat is added until the rms speed of a helium atom has increased 50%. Find new pressure. (Not all parameters given.)
Homework Equations
rms = (3kT/m)1/2
mass of molecule = mass of mole/NA
Then, mass of helium molecule is 6.6x10-26kg
The Attempt at a Solution...
Great. Got it.
When the problem said "Assume it was not far from the surface [of the moon] at that time [when it ran out of fuel]," I thought the point might have been to use mgMOON, rather than GmRmM/r2, but I'm happy to know that there isn't a way to find an actual value from the information...
Hello and thank you. Yes. y2 = ymax does tell me a lot, but I don't see what resources I have to determine either a) the distance y1 is above the ground = y0 or b) what time the rocket ran out of fuel. I do see that v2 and v0= 0 and that v12 = -2g(y2-y1). Are you saying there is a way to...
Homework Statement
Rocket launched runs out of fuel after accelerating "for a short distance," coasts to a maximum altitude, then falls back. Known: rocket mass, max. altitude, g. Find velocity when rocket runs out of fuel.
Homework Equations
There doesn't seem to be enough information...