Which of the following statements concerning solar power is true? (may be more than one correct answer) a) The cost of solar power has decreased in the past 10 years. b) Solar panels are longer-lasting than 20 years ago. c) Solar power makes up a greater share of global electricity generation than 10 years ago. d) Solar panels have become less efficient in the past 20 years.

How will the system respond to a temperature increase?

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

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