41. Examine the chart below describing fundamental forces found in nature. Which of the following are the most appropriate choices for the cells

41. Examine the chart below describing fundamental forces found in nature. Which of the following are the most appropriate choices for the cells containing A, B, X and Y? The ratings are made in descending order.

a. A = 1, B = 3, X = 1, Y = 3

b. A = 3, B = 1, X = 1, Y = 3

c. A = 1, B = 3, X = 3, Y = 1

d. A = 3, B = 1, X = 3, Y = 1

42. Which of the following do not provide scientific evidence for the concept of quantized energy?

a. Atomic Spectra

b. Einstein’s explanation of the photoelectric effect

c. Planck’s explanation for blackbody radiation

d. Einstein’s mass-energy equivalence idea

43. During a particular nuclear reaction, some mass is converted to energy. If the reactants in this process have 0.00562 u more mass than the products, calculate the energy of the products that comes from the reactants and characterize the reaction as endothermic or exothermic.

a. 5.2 MeV, exothermic

b. 5.2 MeV, endothermic

c. 1.9 MeV, exothermic

d. 1.9 MeV, endothermic

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