Suppose our sun had ¼ its present mass but the Earth orbited it at the same...
Suppose our sun had ¼ its present mass but the Earth orbited it at the same distance as it presently does. What would be the length of the year on the Earth under those conditions?
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Suppose our sun had ¼ its present mass but the Earth orbited it
at the same...
Consider a white dwarf with the same mass as our sun. What would its radius need...
Consider a white dwarf with the same mass as our sun. What would its radius need to be in Earth radii) to have an escape speed of 7000 kilometers per second?
Consider a white dwarf with the same mass as our sun. What would its radius need to be (in Earth radii) to have an escape speed of 7000 kilometers per second?
Consider a white dwarf with the same mass as our sun. What would its radius need to be (in Earth radii) to have an escape speed of 7000 kilometers per second?
7) The mass of the sun is 1.99x1030kg and its distance to the Earth is 1.50x1011m....
7) The mass of the sun is 1.99x1030kg and its distance to the Earth is 1.50x1011m. The mass of the earth is 5.98x1024 kg. The universal gravitational constant, G, is 6.67 x10-11 Nm2/kg2. What is the gravitational force of the sun on the earth?
The mass of the sun is 1.99×1030kg and its distance to the Earth is 1.50×1011m. What...
The mass of the sun is 1.99×1030kg and its distance to the Earth is 1.50×1011m. What is the gravitational force of the sun on the earth?
Suppose the sun was twice its current temperature. Recall, the sun is 7 x 105 km...
Suppose the sun was twice its current temperature. Recall, the sun is 7 x 105 km in radius, with a surface temperature of 5800 K., and our distance from the sun is D = 150 million km. Using the equation to model the temperature of the earth, (R2sun4D2)1/4Tsun and remembering you have to work in the absolute temperature scale (0K = -273°C), what would happen to the temperature of the earth (in Kelvin scale)? Select one: a. It would twice as...
15. The factor most directly respon ho factor most directly responsible for making a black hole...
15. The factor most directly respon ho factor most directly responsible for making a black hole invisible is its a. size b. mass C. Color d. surface escape velocity hen you step on a weighing scale at noon Earth pulls you down and the overhead Sun pulls you upward. The reason the Sun's pull does NOT decrease your weight at noon is that a. you, the scale, and Earth are in freefall around the Sun b. the Sun's pull on...
suppose the sun suddenly shrunk, causing its radio to decrease by a factor of two 99...
suppose the sun suddenly shrunk, causing its radio to decrease by a factor of two 99 its mass remains the same). The force of gravity exerted on earth by the sun would
Suppose our Sun eventually collapses into a white dwarf, losing about half its mass in the process, and winding up with...
Suppose our Sun eventually collapses into a white dwarf, losing about half its mass in the process, and winding up with a radius 1.0% of its existing radius. Assuming the lost mass carries away no angular momentum, what would the Sun's new rotation rate be? (Take the Sun's current period to be about 30 days.) What would be its final KE in terms of its initial KE of today?
a) Consider a star with the same ass as our sun but with a different radius....
a) Consider a star with the same ass as our sun but with a different radius. To escape this stur an object launched from its surface needs a speed equal to the speed of light (3 x 10m/s). What is the radius of this star? b) A satellite with mm Sooky is launched into orbit from Earth's surface. If the satellite travels in a circular orbit with speed 7000 m/s what was the speed of the satellite when it was...
37. Jupiter at its present location, were a star? What would Earth be like ? Assume this hypothetical Jupiter with 75 ×...
37. Jupiter at its present location, were a star? What would Earth be like ? Assume this hypothetical Jupiter with 75 × MJ would be a red dwarf with the same density as the Sun but a surface temperature of only 2500 K. What would be its total luminosity, compared to that of the Sun? (Hint: recall that to be a star, Jupiter would have to be 75 times more mass than it has today.)
Consider a white dwarf with the same mass as our sun. What would its radius need to be in Earth radii) to have an escape speed of 7000 kilometers per second?
7) The mass of the sun is 1.99x1030kg and its distance to the Earth is 1.50x1011m. The mass of the earth is 5.98x1024 kg. The universal gravitational constant, G, is 6.67 x10-11 Nm2/kg2. What is the gravitational force of the sun on the earth?
15. The factor most directly respon ho factor most directly responsible for making a black hole invisible is its a. size b. mass C. Color d. surface escape velocity hen you step on a weighing scale at noon Earth pulls you down and the overhead Sun pulls you upward. The reason the Sun's pull does NOT decrease your weight at noon is that a. you, the scale, and Earth are in freefall around the Sun b. the Sun's pull on...
a) Consider a star with the same ass as our sun but with a different radius. To escape this stur an object launched from its surface needs a speed equal to the speed of light (3 x 10m/s). What is the radius of this star? b) A satellite with mm Sooky is launched into orbit from Earth's surface. If the satellite travels in a circular orbit with speed 7000 m/s what was the speed of the satellite when it was...
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