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The latent heat of vaporization of steam is 539 cal/g. By howmany joules does the internal energy of 1 g of steam change as ittransforms from stream to water all of 100oC? Assume that the steam orginally filled a container of fixed volume.
Two magnetic air pucks are approaching each other for a glancing blow. This time one of the pucks will have an additional mass (lead collar). estimate the mass of the collar if the mass of the puck itself is 0.199 kg and the mass of the second puck..
If the centripetal force applied to a body moving in a uniformcircular motion is suddenly turned off, describe the subsequenttrajectory of the body.
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, what is the coefficient of kinetic friction
the average thermal conductivity of the walls including the windows and roof of the house depicted in the figure below
A pendulum is made with a 4.00 kg mass suspended at the end of a thin rod, What is the length of the thin rod
A 30nC charged particle and a 50nC charged particle are near each other. what is the magnitude of the electric field at its original position
The average kinetic energy per molecule of an ideal gas with originally Ni=1000 molecules is Kavg=500J. What is the final number of molecules Nf after this process
a tunnel under a river is 2km long. at what frequencies can the air in the tunnel resonate? explain whether it would be
Water at a gauge pressure of P = 3.4 atm at street level flows into an office building at a speed of 0.90m/s through a pipe 5.6 cm in diameter. find the gauge pressure in the pipe on the top floor
Point charges q1=? 4.10nC and q2=+ 4.10nC are separated by distance 3.20mm , forming an electric dipole, What is the direction of the dipole moment
A block of mass 2.0 kg is pushed against a vertical wall by a horizontal push (P) of 50.0 N. Find the force AND the direction of the friction
Two point charges totaling 9.00 µC exert a repulsive force of 0.250 N on one another when separated by 0.537 m. What is the charge on each
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