What is the magnitude of the force F3, in newtons, if the force is a distance 0.45 m from the left end and the bar is not rotating

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?

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.

If the wavelength is tripled, while the speed of the wave is held constant, what happens to the frequency? a. decreases to 1/3 b. decreases to 1/9 c. increases by 3 d. increases by 9 e. stays the same