1.a scraper weigh on the driving wheels is 40000 lb,has a gross weight of 60000 lb. if the road surface is wet earth with a rolling resistance factor of 100 lb/ton,what is the maximum grade the scraper could ascend?
2.Write a C++ program which solves the 15-puzzle problem. The 15- puzzle problem has a 4x4 grid with 15 pieces in it and one blank square. You should output the proper sequence (moving pieces up, down, left, or right into the blank square) to put the 15 pieces in order.
3.Create a depreciation schedule showing annual depreciation amounts and end-of-year book values for a $26,000 asset with a 5 year service life and a $5000 salvage rate, using the MACRS depreciation method.
4.determine by direct integration the polar moment of inertia of the semiannular area shown with respect to point O b) Using the result of part a, determine the moments of inertia of the given area with respect to the x and y axes