Ameasure of the amount of light received on earth is a star's
a. apparent magnitude
c. position in space
b. absolute magnitude
d. size

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

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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