If the entropy change for a system at 100.0 c is -20.0 J/K, then which of the following describes the heat?

A) 2.00 kJ heat added
B) 2.00 kJ heat removed
C) 7.46 kJ heat added
D) 7.46 kJ heat removed

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

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.

Which object is most likely represented by a dot?