A2.29-kg cart on a long, level, low-friction track is heading for a small electric fan at 0.21 m/s . the fan, which was initially off, is turned on. as the fan speeds up, the magnitude of the force it exerts on the cart is given by at2, where a = 0.0200 n/s2.

Tsunamis are fast-moving waves often generated by underwater earthquakes. in the deep ocean their amplitude is barely noticeable, but upon reaching shore they can rise to an astonishing height of a six-story building. one tsunami generated off the aleutian islands in alaska, had a wavelength of 897km and traveled a distance of 3280km in 4.18h. (a) what was the speed (in m/s) of the wave? find the waves (b) frequency and (c) period.