Birds sitting on a single power line don't get shocked. but if they were to place one foot on each of two lines, would flow between them and they would receive a terrible shock

Write the correct abbreviation for each metric unit

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.

How will the system respond to a temperature increase?