Ablock of mass m attached to the end of a spring of spring constant undergoes simple harmonic motion with amplitude and angular frequency ω. the position of the block is described by a cosine function with an initial phase angle phi=0 . suppose that each of the variables m, k,a, and ϕ is increased in value. classify which increases produce an increase in the frequency of oscillation and which do not. increases frequency does not increase frequency.
options:
increase a
increase k
increase m
increase phi

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation