We are able to see an object when it: A. emits infrared (heat) radiation.
B. is between our eyes and a light source.
C. emits one or more visible light frequencies.
O D. reflects one or more visible light frequencies.

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

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 sound characteristic is not affected by the relative motion of an object