As you can see the extended link attached to this question below, i would sincerely be so glad if you do answer! my exam is due tomorrow and i need to learn this question asap, for the teacher decided to be an angel and reveal one of the questions- yet left it at that., i beg of you, i don't know what to do, darn.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?