Newman

A 32-cm-by-32-cm checkerboard has a mass of 120 g. There are four 19-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of the checkerboard, where is the center of mass of the checkerbo...

What are the following sets? a) ({a,b}∪{a,c})×({a,c,d}∩{b,d,e}) b) {a, {b, c}} ∩ {b, {a, c}}

a) Does {a}∗{b}∗ = {b}∗{a}∗? b) Does {a}∗{b}∗ = {a, b}∗?

The second and fourth terms of Geometric progression are 9 and 4 respectively. Find the common ratio and the first term

Perform the requested operations, propagate uncertainty. Report your answer in proper scientific notation, with absolute uncertainty. [(3.4445 x 105) (± 0.035%)] / [(43.665) (± 6.2%)]

My answer was 10.1611 when I need two numbers separated by the +/-. Can you explain in depth please?

When I simplified this: s = y*sqrt[(0.00035/3.4445E5)^2 + (0.0062/43.665)^2].