Assuming conservation of energy:
Energy before = 7000 + 4000 = 11 000 MJ
Energy after = 2000 + Kinetic = 11 000
Therefore Kinetic = 11 000 - 2 000
Kinetic = 9 000 MJ
Answer:
The speed of the satellite is 7809.52 m/s
Explanation:
It is given that,
Radius of Earth, 
Mass of earth, 
A satellite moves in a circular orbit a distance of,
above Earth's surface.
We need to find the speed of the satellite. It is given by :

R = r + d

So, 
v = 7809.52 m/s
So, the speed of the satellite is 7809.52 m/s. Hence, this is the required solution.
Wait a sec.. what is a diode? i would help if i knew what that was, sorry lol
QUESTION:
WHAT IS THE MAGNITUDE OF THE MAGNETIC FIELD AT RIGHT ANGLES TO THE PROTON'S PATH?
ANSWER:
=<em><u>☑</u></em><em><u> </u></em><em><u>2</u></em><em><u>.</u></em><em><u>4</u></em><em><u> </u></em><em><u>T</u></em>
Answer:
Explanation:
distance between two crests = 8 m
The distance between the two crests is called wavelength.
So, wavelength, λ = 8 m
frequency = 2 Hz
Let v be the velocity of wave.
v = f x λ
v = 2 x 8
v = 16 m/s