The USS Enterprise approaches the planet Seti Alpha 5 at a speed of 0.800c. Captain Kirk observes an airplane runway on the planet to be 2.00 km long. The air controller on the planet says that the runway on the planet is how long?
How does chemical differentiation explain the distribution of material within terrestrial planets?
See the attached file for the diagrams. 1. In the picture two spheres of mass m and a third sphere of mass M form an equilateral triangle and a fourth sphere of mass m 4 is at the center of the triangle. The net gravitational force on that central sphere from the three other spheres is zero. (a) What is M in terms of m ? (b)
Superior planet can have only one X with the Sun during its synodic period, while an inferior planet can have two. What is X
Two hypothetical planets orbit their star according to Kepler's laws of planetary motion. If one of the planets has an orbit which has a semimajor axis three time that of the other, then numerically how much greater is it orbital period compared to the other?
Please explain what Aristotelian model of the universe is ?
Why scientists reject astrology as science?
What does it mean when scientist said reality is rational?
A spacecraft is in orbit around Jupiter. The radius of the orbit is 3.0 times the radius of Jupiter (RJupiter = 71,500 km). The gravitational acceleration at the surface of Jupiter (the surface is defined as the above radius) is 23 m/s2. Without using any other information about Jupiter, what is the period of the spacecraft's
What would the temperature of the Earth's atmosphere have to be such that the average speed of a hydrogen molecule(H2) is Equal to the Earth's escape velocity? What about an oxygen molecule (O2)?
The weight of a object is the same on two different planets. The mass of planet A is only sixty percent that of planet B. Find ra/rb, which is the ratio of the radii of the planets.
The mass of Uranus is 9x10 to the 25th kg. Its mean distance from the earth is about 3x10 to the 12th meters. Estimate your mass in kilograms at birth. Then find the force exerted upon your body at birth by Uranus. Is it very large? Next assume that you were delivered by a 100 kg physician who was on the average about 10 cm from
You detect a star that appears to be moving in a circle with a velocity of 20m/s and a period of 70 days. It is assumed this motion is due to the gravitational force by a planet orbiting the star. The mass of the star is 2*10^30kg. Determine the mass of the planet and its orbital radius.
A.) How can a spectrogrph be used to indicate that the rings of Saturn are not solid? B.) Astronomers in the 1940's had difficulty measuring the amount of water in the Martian atmosphere spectroscopically, becuase the Earth's atmospheric water got in the way. They could not yet fly above our atmosphere. How could the spectral l
What factors determine whether a planet has a thick, thin, or no atmosphere? (Please provide all references and complete URLs).
Assume a spherical, uniform planet with mass M and a radius R. a) Develop a relationship which will the give the gravity field of a planet at any point beneath its surface which is distance r from the center. b) Use the mass and radius of the earth to find the earth's field at a point halfway to the surface.
1.A space vehicle returning to Earth is fist slowed by its motors to a speed of 450m/s and then is slowed further to 100m/s by air resistance in the atmosphere. Its average heat capacity is 0.60kJ/kg-Cdegrees. Find the increase in its temperature on the assumption that 70% of the heat produced is absorbed by the vehicle and th
We call the acceleration due to gravity on the Earth's surface "g". The planet Deneb Prime has a mass of 280 times that of Earth and a radius of 6 times that of Earth. Compared to Earth, what is the acceleration due to gravity on Deneb Prime? Express your answer in g's. So if you compute a value for the gravitational acceleratio
On another planet, Jim throws a ball directly up into the air. The velocity of this ball is a linear function of t. He finds that the velocity of the ball at 1 second is 44 meters/second. At 4 seconds, it is -49 meters/second. a.) Find v(t), the velocity of the ball at time t seconds. b.) Find a(t), the acceleration of t
Argue against the fact that Pluto shouldn't be considered a planet.