A radar signal is beamed towards a planet and its echo is recived 7 minutes later. If the distance between the planet and earth is `6.3xx10^(10)m,` calculate the speed of the signal.

A rada signal is sent towards a planet and its echo is received after 600 seconds. Find the distance of the planet from the earth.

A radar signal is beamed towards a planet from the earth and its echo is received seven minutes later. Calculate the velocity of the signal, if the distance between the planet and the earth is 6.

The mass of the earth is 6 × 10^(24) kg and that of the moon is 7.4 xx 10^(22) kg. If the distance between the earth and the moon is 3.84xx10^(5) km, calculate the force exerted by the earth on the moon. (Take G = 6.7 xx 10^(–11) N m^(2) kg^(-2) )

A planet revolves about the sun in an elliptical orbit of semi-major axis 2xx10^(12) m . The areal velocity of the planet when it is nearest to the sun is 4.4xx10^(16) m//s . The least distance between the planet and the sun is 1.8xx10^(12) m//s . The minimum speed of the planet in km//s is 10 K . determine the value of K .

A satelite revolves around a planet in an elliptical orbit. Its maximum and minimum distances from the planet are 1.5xx10^(7) m and 0.5xx10^(7) m respectively. If the speed of the satellite at the farthest point be 5xx10^(3) m/s, calculate the speed at the nearest point.

The mass of Earth is 6xx10^(24) kg and that of moon is 7.4xx10^(22) kg. if the distance between the earth and the moon is 3.84xx10^(5) km, calculate the force exerted by earth on the moon. Given G=6.7xx10^(11) Nm^(2)//kg^(2) .

A planet revolves about the sun in elliptical orbit. The arial velocity ((dA)/(dt)) of the planet is 4.0xx10^(16) m^(2)//s . The least distance between planet and the sun is 2xx10^(12) m . Then the maximum speed of the planet in km//s is -

The time taken by the earth to complete one revolution around the sun is 3.156 xx 10^(7) s . The distance between the earth and the sun is 1.5 xx 10^(11) m. Find the speed of revolution of the earth.

A planet revolves around the sun in elliptical orbit of semimajor axis 2 × 10^(12 ) m. The areal velocity of the planet when it is nearest to the sun is 4.4 × 10^(16) m^(2)/ /s . The least distance between planet and the sun is 1.8 × 10^(12) m. Find the minimum speed of the planet in km/s.

During an experiment, a signal from a spaceship reahced the ground station in five minutes. What was the distance of the speceship from the ground station ? The signal travels at the speed of light, that is, 3 xx 10^(8) m//s .