Question

13. Bronze is an alloy of copper, zinc, and tin with small amounts of other elements. If the percent composition is 56% copper, 1% zinc, and 42% tin, what is the ratio of copper to tin? a. 4/3 b. 3/2 c. 2/1 d. 3/1 14. The total amount of stock milled off an aluminum casting in two cuts is 6.18 millimeters. The roughing cut is 2.30 millimeters greater than the finished cut. What is the depth of the finished cut in millimeters? a 1.94 b. 2.14 c. 2.34 d. 2.54 DISTANCE ACROSS CORNERS WASHER THICKNESS TOTAL THICKNESS FUA FIGURE 4.5 15. A special washer -faced nut is shown in the accompanying figure 4-5. All dimension are in inches. Determine the distance across flats if it is 55/64 x the distance across corners. a. 1595/2048 in b. 1695/2048 in c. 1795/2048 in d. 1895/2048 in

i need the answeres to all three of the problem.

Answer 1