Explain in short about strong nuclear force.
The Sun's angular diameter is 1920". The distance of Earth from Sun is 1.896 x 1011 m, then
find the diameter of the Sun. (1" = 4.85x10-6 rad)
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In one second, the ISS travels 10 km along its orbit. From the ground this corresponds to an angular distance of Angle = 206265 x (10 km/350 km) = 5900 arcseconds. The speed is then 5900 arcseconds/sec. The diameter of the sun is 0.5 degrees which is 30 arcminutes or 1800 arcseconds.
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