The greatest obstacle to developing solar energy is lack of sunlight at high latitudes lack of sunlight at night lack of mechanisms for storing solar energy large areas required to collect sufficient energy

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2