For a stub tooth spur gear with 20 teeth, a face width of 55 mm, a module of 5 mm, and a material with an endurance strength of 220 MPa, what is the allowable endurance load?
Which are the following answers?!
A: 23.758.29 N
B: 38.773.54 N
C: 5.244.00 N
D: 47.516.59 N
E:19.386.77 N

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

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.