The diameter of the eye of a stationary hurricane is 20 mi and the maximum wind speed is 100 mi/h at the eye wall with r = 10 mi. assuming that the wind speed is constant for constant rand decreases uniformly with increasing r to 40 mi/h at r = 110 mi, determine the magnitude of the acceleration of the air at (a) r = 10 mi, (b) r = 60 mi, (c) r = 110 mi.

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Which of the following statements are true for an isothermal process? check all that apply. - during an isothermal process, the work done by the gas equals the heat added to the gas. - during an isothermal process, the internal energy of the system changes. - an isothermal process is carried out at constant temperature. - an isothermal process is carried out at constant pressure. - an isothermal process is carried out at constant volume.