How do polar bears stay warm? a) they hibernate in the winter. b) their black skin absorbs sunlight or radiant energy. c) their white fur absorbs sunlight and converts it to heat. d) they reduce their metabolic rate when food is hard to find.

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Which statement best describes how private industry decides where to spend the money on research and development

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j