How many moles of helium are in the balloon
A spherical balloon of volume 4.03 103 cm3 contains helium at a pressure of 1.15 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 10-22 J?
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Four point charges have the same magnitude of 2.4 × 10-12 C and are fixed to the corners of a square that is 4.0 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exis
The direction 20.0 north of east. In what direction must the pilot head the plane in order to reach her destination? How long will the trip take?
A magnetic field near the ceiling points up and is decreasing. Looking up at the ceiling, does the non-Coulomb electric field curl clockwise or counter-clockwise?
Include a recommendation of which IM program to use and your reasoning.
Estimate the fast group constants characterizing H2O if the fast group is taken from E1 = 1 eV to E0 = 10MeV and the neutron energy spectrum over this group is taken as ?(E) =1/E.
The temperature of this object is raised from 20 to 320-degrees C. How much work is done by the expanding aluminum if the air pressure is 1.01 X 10^5 Pa?
You are hanging on to the edge of a merry-go-round, and must exert a force of 100 N to hang on. If the speed of the merry-go-round doubles, how much force will you need to exert to hang on?
One of the children on the merry-go-round is not holding on tight enough. If the radius of the merry-go-round is 1.3m, and the child falls off the edge at maximum angular velocity of 11rad/s, what is his new linear (tangential) velocity?
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