The aluminum rod (E_1 = 75 GPa) is reinforced with the firmly bonded steel tube (E_2 = 209 GPa). The diameter of the aluminum rod is d = 28 mm and the outside diameter of the steel tube is D = 42 mm. The length of the composite column is L = 729 mm. A force P is applied at the top surface, distributed across both the rod and tube. Determine the normal stress sigma in the aluminum rod when P = 97 kN:

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.