In order to move a bag of dog food across a 10 meter room, you apply 20 newton’s of force. How much work was done? A. 2 joules
B. 10 joules
C. 30 joules
D. 200 joules

F  you double the  force, you double the acceleration, but  if  you double the  mass, you velocity. all bodies accelerate at the  same  rate regardless of size or  mass.

C) the periods  of day and night would be fixed all year for anyone at the  equator

Current supplied to consumers from generating plants like coal power plant, nuclear power plant, geothermal and others are in form of alternating current instead of direct current because it can be transported easily in a long distance. also, the alternating current has a wide range of frequency and the amount or energy can be increased or decreased.

Answerultraviolet light