Astronomy | Astrophysics Answers

If a satellite collects the rate of unforeseen intergenerative dust ((dM)/(dt))=av in the free interiors, then the satellite will accelerate

is it true that we don't use Pencil in space.we use pen there. if yes why?

A body has a weight 90 kilo gram on the surface of the earth the mass of the moon is 1/ 9 that of Earth's mass and its radius is 1 /2that of the earth's radius on the Moon the weight of the body is

the zenith distance of a star at latitude 60°N is 25° calculate its declination

a dry cell of emf 15v and a internal resistance 0.5 is connected to a component of resistance 7 ohms , find the power input to the component, the power wasted within the cell , the power which would be wasted if the cell terminals were short circuited

The mass moment of inertia I of a homogeneous sphere about its diameter is I = (2/5)m R^2, where m and R are its mass and radius, respectively. Find the dimension of I in items of the absolute {

calculate the value of acceleration due to gravity at point:
(a)5.0 km above the earth`s surface and
(b)5.0 km below the earth`s surface.Radius of earth=6400km
and the value of g at the surface of the earth is 9.80 m/s^2

The Saturn V rocket that took the first astronauts to the moon had a mass of 5 tonnes. Its stage 1 rockets fired for 6 minutes and took the rocket to an altitude of 67km. How much work did the stage 1 rockets do in this time?

the planet mars takes 1.88 years to complete on revolution around the sun. the mean distance of the earth from the sun is 1.5x1o*8 km . calculate that of planet of mars

Consider a galaxy which is 100 million light-years away. Calculate its speed (in km/s), assuming that the Hubble constant is 22 km/sec/million light-years. Enter your answer in the blank (numbers only - no units!).