Suppose the coefficient of kinetic friction between ma and the plane in the figure(figure 1) is μk = 0.15, and that ma=mb=2.7kg.

a) as mb moves down, determine the magnitude of the acceleration of ma and mb, given θ = 35∘.

b) what smallest value of μk will keep the system from accelerating?

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

a electromagnetic waves