a) A student measures a single chocolate cookie and finds that it has an average diameter of 5.24+0.02cm. The cookie is near to a perfect cylinder and has a width of 5.5+0.2mm. Calculate: i. The volume of the cookie (6marks) ii. The density, assuming if the student measures the cookie on a top pan balance to be 10g+1.5%. Give your answer in g/cm' and also in kg/m​

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

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

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.