Amotorboat takes hours to travel going upstream. the return trip takes hours going downstream. what is the rate of the boat in still water and what is the rate of the current?

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

Asystematic approach to problem solving is called a (an)

What is special about a dc circuit ?