Without considering the strong nuclear force, which of the following particles would attract each other? (a) two protons (b) two electrons (c) an electron and a neutron (d) an electron and a proton

What is the square root of 45? (step by step working plz)

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(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)