Alight, inextensible cord passes over a light, frictionless pulley with a radius of 4.2 cm. it has a(n) 19 kg mass on the left and a(n) 5.3 kg mass on the right, both hanging freely. initially their center of masses are a vertical distance 4.4 m apart. the acceleration of gravity is 9.8 m/s 2 . 4.4 m 4.2 cm ω 19 kg 5.3 kg at what rate are the two masses accelerat- ing when they pass each other? answer in units of m/s 2 .

What is a good example of instantaneous speed

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

Which of the following should not be included in a great summary? a. blaming your lab partner b. new questions your experiment has generated c. your prediction d. your investigation plan