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An electron has an uncertainty in its position of 527 pm .What is the uncertainty in its velocity?

A metal whose threshold frequency is 9.02×1014

Calculate the amount of heat required to raise the temperature of a 25 g sample of water from 9 ∘C to 30 ∘C. Express your answer using two significant figures.

A biologist records the number of microbes growing in a culture at the times listed in the table. If the microbes continue to multiply at this rate, how many will there be at 6 P.M. on the second day?

if the volume of the vapor had been assumed to be 125ml instead of your measured volume,what would have been the percent error in your report? molar mass of the compound?explain

There are no constraints on the system.

solve(sin(pi/2 -(20/a)*((1-(20/a)^2)^.5)))