Question 20 (5 points) (01.01 MC) Scientists review the work of other scientists to (5 points) оа ensure the results are in agreement with accepted scientific beliefs Ob ос guarantee federal funding by supporting each other's work Oc keep the science community better informed Od validate the results and check the evidence's reliability

Yes, take risk in life

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on