Helps science help astronomy help ASAP plzzz no links or imma report you. 20 points

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

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?