Astudent measures a distance several times. the reading lie between 49.8 and 50.2 record measurement with absolute, fractional, and percentage uncertainties

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

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

Your science teacher brings in a speaker to talk to your class about climate change. during the session, students ask a few questions. which questions are related to the current evidence on climate change