Knowing a .02 in gap exists when the temperature is 75 degrees F, determine (a) the temperature at which the normal stress in the aluminum bar will be equal to -11ksi,

(b) the corresponding exact length of the aluminum bar.

Bronze Aluminum

A = 2.4 in^2 A=2.8 in^2

E=15x10^6 psi E=10.6x10^6

alph=12x10^-6/F alpha=12.9x^-6/F

L=14in L=18in

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?