Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 7, Problem 24QAP
To determine
The reason for escaping of atmospheric molecules into space.
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The total mass of this planet's atmosphere may be higher than the Earth's but the gases present must be very lighter ones like hydrogen and helium.
The escape velocity of the planet will be very high.
Due to the high escape velocity, the light gases were not able to escape and hence forming a thick atmosphere
Would the atmosphere for this planet be thicker or thinner than that of the Earth?
The total mass of this planet's atmosphere may be higher than the Earth's but the gases present must be very light ones like hydrogen and helium.
The escape velocity of the planet will be very high.
Due to the high escape velocity, the light gases were not able to escape and hence forming a thick atmosphere
Is the escaping velocity for this planet greater or lower than that of the earth?
What would be the pressure 20m under water in a lake on Mars if the acceleration due to gravity on Mars is 3.72 m/s2 ? Neglect the 0.006atm pressure of Mars atmosphere?
Chapter 7 Solutions
Understanding Our Universe
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QAPCh. 7 - Prob. 2QAPCh. 7 - Prob. 3QAPCh. 7 - Prob. 4QAPCh. 7 - Prob. 5QAP
Ch. 7 - Prob. 6QAPCh. 7 - Prob. 7QAPCh. 7 - Prob. 8QAPCh. 7 - Prob. 9QAPCh. 7 - Prob. 10QAPCh. 7 - Prob. 11QAPCh. 7 - Prob. 12QAPCh. 7 - Prob. 13QAPCh. 7 - Prob. 14QAPCh. 7 - Prob. 15QAPCh. 7 - Prob. 16QAPCh. 7 - Prob. 17QAPCh. 7 - Prob. 18QAPCh. 7 - Prob. 19QAPCh. 7 - Prob. 20QAPCh. 7 - Prob. 21QAPCh. 7 - Prob. 22QAPCh. 7 - Prob. 23QAPCh. 7 - Prob. 24QAPCh. 7 - Prob. 25QAPCh. 7 - Prob. 26QAPCh. 7 - Prob. 27QAPCh. 7 - Prob. 28QAPCh. 7 - Prob. 29QAPCh. 7 - Prob. 30QAPCh. 7 - Prob. 31QAPCh. 7 - Prob. 32QAPCh. 7 - Prob. 33QAPCh. 7 - Prob. 34QAPCh. 7 - Prob. 35QAPCh. 7 - Prob. 36QAPCh. 7 - Prob. 37QAPCh. 7 - Prob. 38QAPCh. 7 - Prob. 39QAPCh. 7 - Prob. 40QAPCh. 7 - Prob. 41QAPCh. 7 - Prob. 42QAPCh. 7 - Prob. 43QAPCh. 7 - Prob. 44QAPCh. 7 - Prob. 45QAP
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- Question 2: Planet Mars Planetary Attribute Albedo Radius Gravitational acceleration Mean distance from sun Surface pressure Symbol a R (km) g (m/s²) D (km) Po (kPa) Earth 0.29 6378 9.8 150 x 106 101 Mars 0.25 3395 3.7 228 x 106 0.6 (a) Calculate an appropriate value for shortwave solar radiation (SM) incident at the top of the Martian atmosphere (answer in W/m²). The corresponding value for Earth, SE = 1360 W/m². (b) Estimate the average surface temperature on Mars (answer in degrees Kelvin) using a suitable radiative energy balance. The greenhouse effect can be neglected for Mars. (c) Estimate the mass of the Martian atmosphere (answer in kg).arrow_forwardWhich of the following condition will be true for a planet to have atmosphere? [A] velocity of molecules in its atmosphere is lesser than escape velocity [B] velocity of molecules in its atmosphere is greater than escape velocity [C] velocity of molecules in its atmosphere is twice the escape velocity [D] velocity of molecules in its atmosphere is equal to the escape velocityarrow_forwardIf gas expands to fill all the space available to it, explain why the Earth's atmosphere doesn't drift off into space.arrow_forward
- nin 2. Please calculate the wind power on a rotor with diameter (D) of 20 m. The air density (p) is below. ( Power of the wind (kW) = 2 × px A xv³ Swept area (A) = 1 × × D²arrow_forwardUse the heuristic that a planet will have lost a given molecule from its atmosphere of 4.5 Billion years if the average molecular speed exceeds % of the planet's escape speed to calculate what mercury's mass would have to be in order to it to still have a nitrogen atmosphere like earth's? The molecular weight of nitrogen is 28 atomic units.arrow_forwardEvidence exists that Mars may have had oceans 0.500 km deep in its early history. We don't know what the atmospheric pressure on Mars was back then, but some studies suggest it may have been as high as 50,000 Pa. What would have been the highest pressure at the bottom of these oceans? Density of water is 1000 kg/m³, gmars = 3.71 m/s².arrow_forward
- Typical cruising speeds and altitudes for three commercial aircraft are: 1. Dash 8: Cruising speed: 500 km/h at an altitude of 4570 m. 2. Boeing 747: Cruising speed: 978 km/h at an altitude of 9150 m. 3. Concorde: Cruising speed: 2340 km/h at an altitude of 16 600 m. Find the Mach number of these three aircraft when flying at these cruise conditions. Use the properties of the standard atmosphere. In the U.S. Standard Atmosphere, the temperature in the inner portion of the atmosphere is defined by the following equation: For altitudes, H, of from 0 m (sea-level) to 11019 m: T = 288.16 – 0.00657H Above an altitude, H, of 11 019 m: T = 216.66 The altitude, H, is measured in meters and the temperature, T, in K.arrow_forwardCompare these atmospheric pressure with Mars and estimate how high you'd need to go in Earth's atmosphere to be at the same pressure as the surface of Mars? The given information is in the attachment.arrow_forwardGrizzly the sentient magical leprechaun is doing some calculations to account for pressure and temperature changes as he climbs elevation when flying. Because he is from a magical place they use different units than us, but he needs your help with the math. If rooftop level pressure is 570. grassfield highs (GH) , and the temperature is 2.33 Money Chocolates (MC). what will the pressure be as he climbs and the temperature drops to 1.88 MC?arrow_forward
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