Acopper (young's modulus 1.1 x 1011 n/m2) cylinder and a brass (young's modulus 9.0 x 1010 n/m2) cylinder are stacked end to end, as in the drawing. each cylinder has a radius of 0.44 cm. a compressive force of f = 7400 n is applied to the right end of the brass cylinder. find the amount by which the length of the stack decreases.

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.

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

Mixing salt in water is an example of physical change