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Suppose you are standing at the bottom of a swimming pool looking up at the surface, which we assume to be calm. Looking up, you will see a circular window to the "outer world." If your eyes are approximately1.6meters beneath the surface, what is the diameter of this circular window?
The brick wall of a building has dimensions of by and is thick. How much heat ?ows through the wall a period when the average inside and outside temperatures are, in that order.
In a two-slit experiment a third order bright fringe is observed at an angle of 7.10°. If the wavelength of light is 595 nm, what is the slit separation?
A 2.35kg ball moving at 4.20 m/s to the right hits a 3.45kg ball head on that is travelling at 3.50 m/s to the left. What is the velocity of the first ball after the perfectly elastic collision
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.76 m. Where should the third charge be located
What is the ph of a buffer that results when .40 mol nahco2 is mixed with 100 ml of 2.0 m hcl and diluted with water to 250 ml
The planes of atoms in a cubic crystal lie parallel to the surface, 0.74 nm apart. X rays having wavelength 0.40 nm are directed at an angle theta to the surface.
A gas mixture occupies a volume of 1.4m^3 at a temperature of 65 C and a pressure of 350 kPa. determine the molcular weight of the gas
The two surfaces of a plastic converging lens have equal radii of curvature of 25.0cm, Calculate the index of refraction of the plastic
A water pump lifts water from a well depth of 30 to the ground level. How much work does the pump do by moving 2 m^3 of water
A muon is a lepton that is a higher-mass (rest mass 105 MeV/c^2) sibling to the electron. How many muons survive to reach the surface
A rocket traveling 1850 m/s away from the Earth at an altitude of 6800 km fires its rockets, at what rate must the gases be ejected
The downward acceleration of a 74-kg stuntwoman near the end of a fall from a very high building is 5.5m/s2
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