All of the following elements are in the same group except... nitrogen

selenium

sulfur

oxygen

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?