Just double checking my homework Which of the following properties are character
ID: 2256678 • Letter: J
Question
Just double checking my homework
Which of the following properties are characteristic of a positively curved two-dimensional space? The area of a circle is less than pr2. The total area is finite. Parallel lines get further apart. Straight lines are defined to be the shortest distance between two points. The sum of the angles in the interior of a triangle is more than 180degree. Check the correct answers. The gravitational redshift reflects the fact that gravity affects the rate of clocks. The gravitational redshift is due to time dilation associated with relative motion. The gravitational redshift is entirely due to the Doppler effect for a moving source. The gravitational redshift is larger for a neutron star than for a star like the sun.Explanation / Answer
1)
2,3,4 are correct
explanations
the total area of a 2D closed curve is constant
paralle line get futhur apart, they never meet
shortest distance between two point is the straight line connecting them
sum of interiro angle of a triangle is 180.
2)
1,2,4 are correct
gravitational redshift shows the time delay, when near or far from the gravitational field.
gravitational redshift is usually small but it is larger near neutron sources and blackholes
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