A space probe 2.0 * 1010 m from a star measures the total intensity of electromagnetic radiation from the star to be 5.0 * 103 W>m2 . If the star radiates uniformly in all directions, what is its total average power output

 P = 1.0 10¹⁴ W

Explanation:

Radiation intensity is the power radiated by unit area,

        I = P / A

As the star radiates uniformly, the radiation expands into a sphere, the area of this sphere is

       A = 4π R²

Let's replace

     P = I (4π R²)

Let's calculate the power

    P = 5.0 10³  2.0 10¹⁰

   P = 1.0 10¹⁴ W

This is the power radiated by the star

c. newton's third law of motion

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods