The 40-ft-long a-36 steel rails on a train track are laid with a small gap between them to allow for thermal expansion. determine the required gap d so that the rails just touch one another when the temperature is increased from t1=-20f to t2=90f. using this gap, what would be the axial force in the rails if the temperature rises to t3=110f? the cross-sectional area of each rail is 5.10 in2

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet

Aline segment is different from a line in that a segment has