(A) An electromagnetic wave of intensity 190 W/m2 is incident normally on a rectangular black card with sides of 25 cm and 38 cm that absorbs all the radiation. Find the force exerted on the card by the radiation. (B) Find the force exerted by the same wave if the card reflects all the radiation incident on it.

Astronomers discover an exoplanet (a planet of a star other than the sun) that has an orbital period of 3.87 earth years in its circular orbit around its sun, which is a star with a measured mass of 3.59 x 1030 kg. find the radius of the exoplanet's orbit.

Astate of matter all that has define volume and can flow is a(n)

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