Yusef is doing an experiment to find out how the amount of sunlight affects the growth of a seedling. he has three identical pots containing grass seeds that he planted at the same time. he puts them in windows that receive different amounts of sunlight each day. every day, yusef looks at the pots and records his observations. what is the variable in yusef's experiment? a. amount of water b. type of seedling c. type of soil d. amount of sunlight

How does the space charge width change with forward and reverse bias? also, calculate the space charge width for a reverse bias of 4v on a silicon pn junction at t = 300k and doping concentrations of na = 5x1015cm-3 , nd = 5x 1016 cm-3 .

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

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.