kingwinner Posted February 8, 2006 Report Posted February 8, 2006 1) Place the answer in proper amount of significant digits and unit: K = [6.63x10^(-34) J.s] (7.09x10^14 s) - [2.17 x 10^(-19) J] Note: J.s = Joule x sceonds Can someone help me with this question, please? I don't know how to write the answer with the proper amount of significant digits and unit..... I got: K=4.70x10^(-19) J.s^2 - 2.17x10^(-19) J Note: J.s^2 = Joule x seconds^2 They have different units, how can I subtract this and what are the final units? What would be the correct number of significant digits in the final answer? Quote
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