Acapacitor stores energy u1 when it holds charge q .the same capacitor stores energy u2 when it holds charge 16 q what is the ratio between u2/u1

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

What will a positive and a negative charge do if they are separated from each other?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?