21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 11, Problem 38QP
To determine
The tidal force acting on the astronaut moving around the Earth.
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Calculate the gravitational field strength on a planet with a diameter of 12304.8 km and the escape velocity of 11 km s. Give your answer in SI units.
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Jupiter has a mass of 1.9×10^27 kg, a radius of 7.1×10^4 km and one day lasts 9 hours and 55 minutes. How many times is the force of gravity bigger on Jupiters equator comared to Earth?
A synchronous satellite, which always remains above the same point on a planet's equator, is put in orbit around Jupiter so that scientists can study a surface feature. Jupiter rotates
every 9.84 h. Use the data of Table 13.2 to find the altitude of the satellite.
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Chapter 11 Solutions
21st Century Astronomy
Ch. 11.1 - Prob. 11.1CYUCh. 11.2 - Prob. 11.2ACYUCh. 11.2 - Prob. 11.2BCYUCh. 11.3 - Prob. 11.3CYUCh. 11.4 - Prob. 11.4CYUCh. 11 - Prob. 1QPCh. 11 - Prob. 2QPCh. 11 - Prob. 3QPCh. 11 - Prob. 4QPCh. 11 - Prob. 5QP
Ch. 11 - Prob. 6QPCh. 11 - Prob. 7QPCh. 11 - Prob. 8QPCh. 11 - Prob. 9QPCh. 11 - Prob. 10QPCh. 11 - Prob. 11QPCh. 11 - Prob. 12QPCh. 11 - Prob. 13QPCh. 11 - Prob. 14QPCh. 11 - Prob. 15QPCh. 11 - Prob. 16QPCh. 11 - Prob. 17QPCh. 11 - Prob. 18QPCh. 11 - Prob. 19QPCh. 11 - Prob. 20QPCh. 11 - Prob. 21QPCh. 11 - Prob. 22QPCh. 11 - Prob. 23QPCh. 11 - Prob. 24QPCh. 11 - Prob. 25QPCh. 11 - Prob. 26QPCh. 11 - Prob. 27QPCh. 11 - Prob. 28QPCh. 11 - Prob. 29QPCh. 11 - Prob. 31QPCh. 11 - Prob. 32QPCh. 11 - Prob. 33QPCh. 11 - Prob. 34QPCh. 11 - Prob. 35QPCh. 11 - Prob. 36QPCh. 11 - Prob. 37QPCh. 11 - Prob. 38QPCh. 11 - Prob. 40QPCh. 11 - Prob. 41QPCh. 11 - Prob. 42QPCh. 11 - Prob. 43QPCh. 11 - Prob. 44QPCh. 11 - Prob. 45QP
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- Consider a planet of total mass 19.3 x 1024 kg, and radius 10.7 x 106 m. If the planet has a uniform density, calculate the gravitational field 2.7 x 106 m below the surface, in N/kg. Use G = 6.7 x 10-11 N m2/ kg2. (Please answer to the fourth decimal place - i.e 14.3225)arrow_forwardCalculate the gravitational field strength on a planet with a diameter of 12738 km if the escape velocity is 11 km s-1. Give your answer in SI units.arrow_forwardA synchronous satellite, which always remains above the same point on a planet's equator, is put in circular orbit around Neptune so that scientists can study a surface feature. Neptune rotates once every 16.1 h. Use the data of this table to find the altitude of the satellite. kmarrow_forward
- The average density of the planet Mercury in 5.61 * 10^3 kg/m^3. The acceleration of gravity on its surface is 3.92m/s^2. Calculate the average radius of Mercury.arrow_forwardWhat is the gravitational field strength at the surface of Jupiter (mass 1.9x1027 kg, radius 7.1×107m)arrow_forwardIf the radius of Mercury is ~2,440 km, what is the required tangential orbital velocity needed to maintain a 100 kg satellite 1,500 km from the planet’s surface? (The mass of Mercury is Mm = 3.3 x 1023 kg)arrow_forward
- A synchronous satellite, which always remains above the same point on a planet's equator, is put in circular orbit around Neptune so that scientists can study a surface feature. Neptune rotates once every 16.1 h. Use the data of this table to find the altitude of the satellite.arrow_forwardIf the gravitational field strength at the surface of Venus is g, at what distance from the surface of Venus will it be 0.25g? State your answer in terms of the radius of Venus.arrow_forwardIn this problem, you will try to use proportionality, instead of direct calculation, to scale the Earth values of g and weight to those appropriate for another planet. Earth has a mass of 1 Earth mass, a radius of 1 Earth radius, and a surface gravity of 1g = 9.8 m / s². If your mass is 76 kg, you would weigh 744 Newtons. The mass of HD34445 f is 37.9 Earth masses, and it's radius is 6.859 Earth radii. Look at the surface gravity formula. Let's consider this in parts. If ONLY the mass changed, the surface gravity of HD34445 f would be a times that of Earth. If ONLY the radius changed, the surface gravity of HD34445 f would be times that of Earth. Combining the two factors, the surface gravity of must be times that of Earth. What would your weight be on HD34445 f, if your weight is 744 on Earth? Newtons. Note: If your answer requires scientific notation, remember that OWL uses "e" notation: 1.1 x 105 is 1.1e5 to OWL.arrow_forward
- (a) Calculate Jupiter's mass given the acceleration due to gravity at the north pole is 28.328 m/s² and the radius of Jupiter at the pole is 66,850 km. kg calculated M (b) Compare this with the accepted value of 1.898 x 1027 kg. Mcalculated M. acceptedarrow_forward10 Jup Europa Figure I Ganymedearrow_forwardImagine a particular exoplanet covered in an ocean of liquid ethane. At the surface of the ocean, the acceleration of gravity is 7.80 m/s?, and atmospheric pressure is 8.20 x 104 Pa. The atmospheric temperature and pressure on this planet causes the density of the liquid ethane ocean to be 620 kg/m. (a) What force (in N) is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of the ocean? N (b) What is the weight, on this exoplanet, of a 10.0 m deep cylindrical column of ethane with radius 2.00 m? (Enter your answer in N.) (c) What is the pressure (in Pa) at a depth of 10.0 m in the ethane ocean? Paarrow_forward
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