(c) What is the ratio ol the TIIS SpeeuS OI the tWO typos UI 57. A space vehicle returning from the Moon enters the atmosphere at a speed of about 40,000 km/h. Molecules (assume nitrogen) striking the nose of the vehicle with this speed correspond to what temperature? (Because of this high temperature, the nose of a space vehicle must be made of special materials; indeed, part of it does vaporize, and this is seen as a bright blaze upon reentry.)

(c) What is the ratio ol the TIIS SpeeuS OI the tWO typos UI 57. A space vehicle returning from the Moon enters the atmosphere at a speed of about 40,000 km/h. Molecules (assume nitrogen) striking the nose of the vehicle with this speed correspond to what temperature? (Because of this high temperature, the nose of a space vehicle must be made of special materials; indeed, part of it does vaporize, and this is seen as a bright blaze upon reentry.)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

(a) if length 4 mm fixed two points we have a bay with between Temperature. bar is increased of the upto 4sc o there will be a crack at the centes of the bar and it maves In upuard. direction. The. Cofficent of 25x 105/C then Find the upward from the 4 the linear expansion. in is height h nor mal Pasition of bar?
Problem 168. For an experiment a mixture of gases con- taining 50 volume percents hydrogen and 50 volume per- cents nitrogen should be continuously provided at a speed of 0.5 kg/miu. The cross section of the gas tubes is 10 cm². Determine the speed of gas flow in the tubes, provided that the pressure is 105 Pa and the temperature is 27 °C in the tubes. H, N,
A stone of mass 13 kg is dropped into a tank of water from just above the watersurface. The tank contains 100kg of water which is 1.3m deep. The stone has aspecific heat of 1000 J/kgK and water 4200 J/kgK. If the water and stone are initiallyat the same temperature, determine the temperature rise f the water. State anyassumptions made answer: 3.8x10^-4K
The temperature inside a supernova explosion is said to be 2.00×1013 K . (a) What would the average velocity vrms of hydrogen atoms be?(b) What is unreasonable about this velocity? (c) Which premise or assumption is responsible?
2 inch outer diameter throughout a plastic sheet milla 60 m long section of a horizontal steam pipefrom one end to the other, on which it passes without comparisonis observed. Ambient air and surface temperaturesAt 20 ° C, several hours measurements are the average of the exposed surfaces of the steam pipe.shows that its temperature is 160 ° C. The outer surface of the pipe appears to be oxidized andemissivity can be taken as 0.6. According to this;a) Calculate the heat loss in the steam pipe.b) Some steam is produced in a gas oven operating at 60% efficiency. Factory 105,500kJ natural gas pays $ 1.10. If it is assumed that the factory operates all year (365 days), for this facilitycalculating the annual cost of heat losses in the steam pipe.
At what height is the atmospheric pressure 29.0% of what it is at sea level? Assume the molar mass of the air molecules to be 29.0 g/mol and that the air temperature is uniformly 287 K. [Answer in kilometres with 3 sig digits, but do not enter units with your answer]
Large helium-filled balloons are used to lift scientificequipment to high altitudes. (a) What is the pressure inside such a balloon if it starts out at sea level with a temperature of 10 degrees celcius and rises to an altitude where its volume is twenty times the original volume and its temperature is -50 degrees celcius? (b) What is the gauge pressure? (Assume atmospheric pressure is constant.)
(1) Hydrostatic balance states Op Əz Equation -1 where p is pressure, z is altitude, p is density and g is the acceleration due to gravity. It can be shown that the reciprocal of hydrostatic balance also applies. That is Equation -2 дz Әр = -Pg, = 1 pg Use the ideal gas law (p = pRT, where R is the gas constant for dry air and Tis temperature) to eliminate p from (2). (2) Under geostrophic balance, the following balance is approximately satisfied Equation -3 fu=-g ¹ (3) where f is the Coriolis parameter, u is the zonal wind, y is meridional distance and z is altitude. (Note that the derivative on the right hand side is taken at constant pressure.) Differentiate (3) with respect to p, and use your expression from part 1 to obtain an expression relating du/ap and T/ay. This expression is called "thermal wind balance".
Assuming that the temperature of the breathe of a human being is 35°C and the relative humudity is 95% after leaving the mouth, will the exhale visible at 10°C air temperature. in other words will there be condensation? prove your statement with calculations. The vapore prssure of water at 35°C is 5.62kPa(100% relative humidity) and its enthalpy of vaporization is 44kJ/mol
At the surface of Venus the average temperatureis a balmy 460C due to the greenhouse effect (global warming!),the pressure is 92 earth-atmospheres, and the acceleration due togravity is 0.894gearth. The atmosphere is nearly all CO2 (molar mass44.0 g/mol), and the temperature remains remarkably constant. Assumethat the temperature does not change with altitude. (a) What is the atmosphericpressure 1.00 km above the surface of Venus? Express youranswer in Venus-atmospheres and earth-atmospheres. (b) What is theroot-mean-square speed of the CO2 molecules at the surface of Venusand at an altitude of 1.00 km?
Nuclear fusion, the energy source at the Sun, hydrogen bombs, and fusion reactors, occurs much more readily when the average kinetic energy of me alums is high-that is, at high temperatures. Suppose you want me atoms in your fusion experiment to have average kinetic energies of 6.40 × 10-14J. What temperature is needed?
The first real length standard, adopted more than 200 years ago, was a platinum bar with two very fine marks separated by what was defined to be exactly one meter. If this standard bar was to be accurate to within +1.0 µm, how carefully would the trustees have needed to control the temperature? The coefficient of linear expansion is 9 × 10-6/C°.