A ball attached to a 3m string makes 30 revolutions in 15s. What is the period?

What is the frequency?

What is the tangential speed?

What is the centripetal acceleration of the ball?
If the mass of the ball is 0.005 kg, calculate the tension in the string (Tension is
actually the centripetal force).

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

What surface does the epithelial tissue cover? a. the surface of the body b. lines internal organs c. forms many glands d. all of the above

Look at the electroscope, describe how you can cause the two leaves at the bottom to repel each other and stay that way