Find symbolic expressions for equivalent spring and damper forces (Fk and Fb, respectively) in terms of mass displacement z, velocity z', and parameters k1, k2, b1, b2. You may assume that the springs are relaxed when z

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?