Does the temperature of that expanding air change
When you blow up a balloon, do you slightly warm the balloon? When air is allowed to rush out of it, how, if at all, does the temperature of that expanding air change?
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A roller coaster has a HYDRALUIC catapult propels the car to the top of the ride at a height of 405 ft. If the car and ocupants weigh 1189 lb what would be the potential energy of the car at the top in joules
A freezer is 1 m wide and deep, and 2 m high, and must operate at -10 degree C when the ambient air is at 30degree C. What thickness of polysterene is required if the load on the refrigeration unit should not exceed 200W?
The drinking water standard for dissolved Mn2+(aq) is .05 mg/L. Assuming dissolved Ca2+=10-3.00 M and CO2-3 = 10 -5.48 M compute Mn2+(aq) at equilibrium with this solid solution.
The speed limit on a country road is 70 km/hr. The radius of curvature for a bridge on the road is 50 meters. Was the ticket deserved? Show why or why not.
The secondary bonding of gas molecules to a solid surface is a common mechanism for measuring the surface area of porous materials.
Many people mistakenly believe that astronauts that orbit the Earth are "above gravity." Calculate the acceleration due to gravity (g) for space shuttle territory, 200 kilometers above the Earth's surface.
Draw lewis structure for PCl3. Calculate the formal charge on P. What is the name of geometry for the molecule? Is the molecule polar?
If he sits up and raises his feet just as he crosses the vertical line, so that his center of gravity is 9 feet from point A, what angle with the vertical will the swing make when the swing reaches its maximum height?
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