Surface currents and waves are powered by a) wind and heat. b) wind and tides. c) boats and wind. d) heat and weather.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

While carrying a heavy box up the stairs,you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.