If we see a supernova of a star that is 25 light years away from us, we know it exploded 25 years ago.

True

False

A cube of side 3.56 cm has a charge of 9.11 μ C placed at its center. Calculate the electric flux through one side of the cube

What conclusions can you draw about the connection between the Sun's altitude and the latitude of the observer on seasonal changes?

What is the chemical symbol for Silver? A. Ir B. Au C. Fe D. Ag

The molar heat of fusion for water is 6.009 kJ/mol. Express this heat of fusion in Joules per gram. 1. 0.3453 J/g 2. 400.3 J/g 3. 287.5 J/g

Bones are evidence of which type of pre-existing life? plants and animals neither plants nor animals animals plants

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What are the SI units for specific heat capacity

What are starburst galaxies and what do they have to do with galaxy evolution?