Bilden Sie Sätze im Perfekt. (Please, very urgent!)

 Rewrite the sentences in the perfect tense (= past tense). 1. I play soccer on the weekend. I played soccer on the weekend and  Schreiben Sie die Sätze ins Perfekt (=past tense) um. 1. Ich spiele am Wochenende Fußball. Ich habe am Wochenende Fußball gespielt.

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:

idk dont ask me

Explanation: