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It's possible to use the ideal-gas law to show that the density of the earth's atmosphere decreases exponentially with height. That is, ?=?0exp(?z/z0), where z is the height above sea level, ?0 is the density at sea level , and z0 is called the scale heightof the atmosphere. Hint: This problem requires an integration. What is the weight of a column of air?
A) Determine the value of z0.
B) What is the density of the air in Denver, at an elevation of 1600 m?
C) What percent of sea-level density is this?
D) What is the weight of a column of air?
A 2.7 kg mass acceleration speed at 10 m/s2 in a direction 38? north of east. One of the two forces acting on the mass has a magnitude of 10.6 N and is directed north. Determine the magnitude of the second force.
express what would be the frequency of vibrations.
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
A man takes his dog out for a walk. The dog has no legs and is dragged along sidewalk on a little sled (mass of dog + sled = 13.0kg). The sidewalk exerts a frictional force of 14.0N.
What is the direction of the object's acceleration after it is free. What is the magnitude of the objects acceleration.
A meter stick lies on the bottom of a 100 cm long tank with its zero mark against the left edge. You look into the tank at a 30 angle, with your line of sight just grazing the upper left edge of the tank.
You select a rental package that includes a car with an average consumption of 6rm liters of fuel per 100 rm km. Considering that in Europe average fuel cost is 1.063 rm euros/ liter, how much (in US dollars) will you spend in fuel in your trip.
Two point charges have a total charge of 515 µC. When placed 1.15 m apart, the force each exerts on the other is 24.4 N and is repulsive. What is the charge on each.
The internal energy of the coin
Two negative and two positive point charges (magnitude = 3.64mC) are positioned on opposite corners of a square (each side = 0.155 m).Determine the magnitude of the force on each charge.
Coherent light with wavelength 603 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits.
When two identical ions are separated by a distance of 5.9 10-10 m, the electrostatic force each exerts on the other is 6.0 10-9 N. Evaluate how many electrons are missing from each ion?
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