Two cars are traveling on level terrain at 60 mi/h on a road with a coefficient of adhesion of 0.8. The driver of car 1 has a 2.5-s perception/reaction time and the driver of car 2 has a 2.0-s perception/reaction time. Both cars are side by side and the drivers are able to stop their respective cars in the same amount of distance after first seeing a roadway obstacle (perception/reaction plus vehicle stopping distance). If the braking efficiency of car 2 is 0.75, determine the braking efficiency of car 1. (Assume minimum theoretical stopping distance and ignore aerodynamic resistance.)

## Compute the work done by the gas for the processesTwo pounds of an ideal gas are contained within a piston-cylinder arrangement. The initial volume and pressure are 1 ft3 and 75 psia respectively. The final volume is 3 ft3. |

## Find drag force fd on golf ball assuming to smooth sphereDetermine the drag force FD on a golf ball assuming it is a smooth sphere. (Assume the air is at 60 F and standard pressure.) Now determine the drag force on an actual golf ball assuming CD = 0.25. How do the two forces compare |

## Find what size pipe should be used to be riveted steelThe pressure at the entrance of the system must be at least 75 psi and the demand is 1350 GPM. The pipe material is to be riveted steel and the length of pipe is 5,000 feet. What size pipe should be used |

## Determine the maximum service loadDetermine the maximum service load W (kips) at the mid-height of the beam-column shown in the accompanying figure 2.1. Assume the member is hinged with respect to bending in both x and y directions at the top and bottom. |

## What would be the lightest w shape that can resist a serviceA compression member is subjected to service loads of 165 kipsdead load and 535 kips live load. The member is 26 feet long andpinned at each end. Use A992 steel and select a W14shape. |

## Determine the stability of the wallDetermine the stability of the wall before and after the rainfall. Neglect seepage effects and which of the two walls in Figure gives the large horizontal force |

## Volume of the lakeSuppose that the distance from the lake outlet to the withdrawal cannot be more than 20 mi. What should be the new volume of the lake? |

## Calculate the required downpayment and monthly paymentsTerry wants to purchase a used car for $8000. The dealer offered to finance the deal at 8.5% APR for 4 years with 10% down payment. Terry's bank will provide a loan at 7.8% for 3 years, but wants a 20% downpayment. |

## Calculate the required diameter of steel tie rodsCALCULATE THE REQUIRED DIAMETER OF STEEL TIE RODS NECESSARY TO SUPPORT A BALCONY. EACH ROD, SUSPENDED FROM A ROOF TRUSS, SUPPORTS A FLOOR AREA OF 7.0m^2. THE COMBINED BALCONT FLOOR LOAD IS 10.5 kPa |

## What is the nominal strength with one end fixedThe length is 10 feet. What is the nominal strength if Fy=50 ksi. Note that this is a slender-element compression member, and the equations of AISC section E7 must be used |

## Find the inititial populationA 5 cm diameter, 6 m high pole is fixed in concrete. The pole supports a circular 4 m diameter sign. Estimate the maximum moment that must be resisted by the concrete for a wind speed of 30 m/s (wind is assumed normal to the sign; density of air = 1... |

## Calculate the pressure in psignat the bottom of the tankAssume a hydrostatic condition in a cubic tank with 64ft length, 32ft width and 16ft height. The tank is filled with 15ppg( pounds per gallon) fluid. Calculate the pressure in psignat the bottom of the tank. |

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