The frequency of vibrations of a vibrating violin string is given by f = 1 2L T rho where L is the length of the string, T is its tension, and rho is its linear density.†
(a) Find the rate of change of the frequency with respect to the following. (i) the length (when T and rho are constant)

If forces acting on an object are unbalanced. true or false

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?

7types of electromagnetic waves from lowest to highest frequency