If you increase the frequency of a sound wave four times, what will happen to its speed? OA. The speed will increase four times. B. The speed will decrease four times. The speed will remain the same. D. The speed will increase twice. The speed will decrease twice. ​

Asample of a gaseous substance changes into a liquid

Apossible explanation for a set of facts that can be tested by further investigation is called

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively