Fill in the blank with the correct German form.

Wir nach Norden gefahren.

sind
haben
sein
bin

sein is the correct answer

Explanation: i looked it up hope it helps

Sind

Explanation:

"gefahren" is past tense. So you did.

(I did not look it up, I know that.)

answer:

heartless

explanation:

answer:

because the gravitational attraction of our sun for the earth is the centripetal force causing the earth's circular motion around the sun, we can use netwon's law of universal gravitation to find the mass of the sun without ever actually visiting the sun. this is the same technique you would use to determine the mass of cygnus x-1 with a probe. the earth, orbiting the sun, plays the same role as the probe sent to orbit cygnus x-1.

f(force of gravity) = f(centripetal force)

explanation: