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Inputs and outputs of brakes on a bike

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?