Fill in the blank epsilon Eridani is a star that is 10.5 light years away from Earth. One light year is about 9.46 trillion kilometers.
The distance between the star and Earth in kilometers is (BLANK)
trillion kilometers.

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

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