The maximum and minimum distances of the Earth from the Sun respectively are `152xx10^(6)` km and `94.5xx10^(6)` km. the Sun is at one focus of the elliptical orbit. Find the distance from the sun to the other focus.

The maximum and minimum distances of a comet from the sun are 1.4xx10^(12)m and 7xx10^(10)m . If its velocity nearst to the sun is 6xx10^(4)ms^(-1) , what is the velocity in the farthest position? Assume that path of the comet in both the instantaneous positions is circular.

A satellite revolves round a planet in an elliptical orbit. Its maximum and minimum distance from planet are 1.5xx10^(7) metre and 0.5xx10^(7) metre respectively. If the speed of the satellite at the farthest point is 5xx10^(3)m//s . Calculate the speed at the nearest point.

If Earth be at one fourth its present distance from the Sun, how many days will there be in a year?

The distance of two planets from the Sun are 10^(13)and10^(12) metres respectively. The ratio of time periods of these two planets is:

The distance of two planets from the Sun are 10^(13)and10^(12) metres respectively. The ratio of time periods of these two planets is: