In describing the universe using his equations of general relativity, einstein assumed that it was isotropic (the same in all directions.) what recent observations have confirmed that the universe is isotropic on the large scale?

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move