*4–68. the c83400-red-brass rod ab and 2014-t6- aluminum rod bc are joined at the collar b and fixed connected at their ends. if there is no load in the members when t1 = 50°f, determine the average normal stress in each member when t2 = 120°f. also, how far will the collar be displaced? the cross-sectional area of each member is 1.75 in2.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

You win the lottery and decide to impress your friends by exhibiting a million-dollar cube of gold. at the time, gold is selling for $ 426.60 per troy ounce, and 1.0000 troy ounce equals 31.1035 g. -how tall would your million-dollar cube be? en cm

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)