Pressure on Venus. At the surface of Venus the aver-age temperature is a balmy 460° C due to the greenhouse effect (global warming!), the pressure is 92 earth-atmospheres, and the acceleration due to gravity is 0.894 g earth . The atmosphere is nearly all CO 2 (molar mass 44.0 g/mol), and the temperature remains remarkably constant. Assume that the temperature does not change with altitude. (a) What is the atmospheric pressure 1.00 km above the surface of Venus? Express your answer in Venus-atmospheres and earth-atmospheres. (b) What is the root-mean-square speed of the CO 2 molecules at the surface of Venus and at an altitude of 1.00 km?
Pressure on Venus. At the surface of Venus the aver-age temperature is a balmy 460° C due to the greenhouse effect (global warming!), the pressure is 92 earth-atmospheres, and the acceleration due to gravity is 0.894 g earth . The atmosphere is nearly all CO 2 (molar mass 44.0 g/mol), and the temperature remains remarkably constant. Assume that the temperature does not change with altitude. (a) What is the atmospheric pressure 1.00 km above the surface of Venus? Express your answer in Venus-atmospheres and earth-atmospheres. (b) What is the root-mean-square speed of the CO 2 molecules at the surface of Venus and at an altitude of 1.00 km?
Pressure on Venus. At the surface of Venus the aver-age temperature is a balmy 460° C due to the greenhouse effect (global warming!), the pressure is 92 earth-atmospheres, and the acceleration due to gravity is 0.894 gearth. The atmosphere is nearly all CO2 (molar mass 44.0 g/mol), and the temperature remains remarkably constant. Assume that the temperature does not change with altitude. (a) What is the atmospheric pressure 1.00 km above the surface of Venus? Express your answer in Venus-atmospheres and earth-atmospheres. (b) What is the root-mean-square speed of the CO2 molecules at the surface of Venus and at an altitude of 1.00 km?
Mars has an atmosphere composed almost entirely of carbon dioxide (CO2), with an average temperature of -63°C
What is the rms speed of a molecule in Mars’s atmosphere?
The atmospheric pressure on the top of Mt. Everest is 0.333 atm and the average temperature is -25.0 oC. What is the density of air at the top of Mt. Everest in units of mol/L?
A student foolishly attempts to stop a steel bar, of length L = 1 m and at a temperature of 20ºC, from thermally expanding by attaching it to a wooden support with a nail at each end. Steel's Young's modulus is Y = 1.1 × 1011 N/m2 and it's linear thermal expansion coefficient is α = 13 × 10-6 1/C. Randomized Variables
Y = 1.1 × 1011 N/m2α = 13 × 10-6 1/C
What is the volue of the stress, in pascals, that develops due to a rise of temprature to 21 C?
Assuming the nails have a cross- sectional area of A= 10^-5 m^2 all of which is perpendicular to the stress force from the bar, what is the force acting on each due to that temperature rise?
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