Which of the following are disadvantages of solar energy? check all that apply. a. it contributes to global warming. b. it is expensive. c. it is not equally effective for all areas of the world. d. it is not effective at all times of day.

i would think klcio3

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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