Answer:
Answer: 18.3 km/s
Explanation:
If a satellite in Molniya orbit has an apogee at 48.000 km as measured from the center of Earth, and a velocity of 3.7 km/s. Its velocity in at perigee would be 18.3 km/s.
<span>the number of protons and neutrons. hope this helps (:
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When I ride the train, the song of the train whistle is an example of the Doppler Effect. Because a train is at the center of sound waves it produces, which radiate in concentric circles around it, there is no difference between the sound heard by someone on the platform, and the sound of the train as heard by someone standing behind the caboose.
The separation between them is 
Concept :
If the force increases, distance between charges must decrease. Force is indirectly proportional to the distance squared.
Given,
Two point charges are brought closer together, increasing the force between them by a factor of 20.
Original force is
F = 
-------- ( 1 )
Here, 
are charges and r is the distance between them
New force F' = 
----------- (2 )
Divide ( 1 ) and ( 2 )
= 
20 = 
r' =
Given that force between them are increasing and therefore distance between them decrease by
Learn more about two point charges here : brainly.com/question/24206363
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