Why must you stand closer to a small fire to experience the same warmth you get when standing farther away from a large fire?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Elements on the periodic table are ordered according to their