A two thousand gallon tank has two influent streams. Influent one has a flow of 20 GPH and a salt concentration of 100 mM; influent two has a glow of 15 GPH and a salt concentration of 200 mM. What is the steady-state concentration of salt in the tank. Assume volumetric steady-state and that the system is well mixed.

What is the average power of each laser pulse : A LASIK vision correction system uses a laser that emits 10 ns-long pulses of light, each with 2.5 mJ of energy. What is the average power of each laser pulse |

Determine deviation at the top of trajectory caused by wind : A fireworks shell is launched vertically from point A with speed sufficient to reach a maximum altitude of 500ft. A steady horizontal wind causes a constant horizontal acceleration of 0.5ft/sec^2, but does not affect the vertical motion. |

What is the total energy stored in this circuit : A 7.00 uF capacitor is initially charged to a potential of 16.0V. What is the total energy stored in this circuit |

What is the cost of equity from retained earnings : Assume that you are a consultant to Broske Inc., and you have been provided with the following data: D1 = $0.67; P0 = $42.50; and g = 8.00% (constant). What is the cost of equity from retained earnings based on the DCF approach? |

What is the steady-state concentration of salt in the tank : A two thousand gallon tank has two influent streams. Influent one has a flow of 20 GPH and a salt concentration of 100 mM; influent two has a glow of 15 GPH and a salt concentration of 200 mM. What is the steady-state concentration of salt in the .. |

Descriptive statistics : Descriptive statistics (5-number summary, mean, mode, range and standard deviation) for each of the four variables along with an explanation of what the descriptive statistics tell us about the motion picture industry. |

What is the contact area between each tire and the ground : The four tires on the author's car are inflated to an absolute pressure of 2.8 multiply.gif 105 Pa.what is the contact area between each tire and the ground |

Explain the purpose of the sodium carbonate in part a : What is the purpose of the sodium carbonate in Part A. Why do we add glacial acetic acid in Part 1B when we react N,N-dimethylaniline, but we don;t use it with the other aromatic couplings reagents |

Find what is the total distance during the time interval t : The velocity of a particle traveling along a straight line is v=(3t^2-6t) ft/s , where t is in seconds. if s=4ft when t=0 determine the position of the particle when t=4s what is the total distance during the time interval t=0 to t=4s |

## Find the final speedTwo carts with masses of 4.72 kg and 2.84 kg move toward each other on a frictionless track with speeds of 4.86 m/s and 3.97 m/s respectively. The carts stick together after colliding head-on. Find the final speed. |

## Difference between total and static pressureThe difference between the total and static pressure before a shock is 75 psi. What is the maximum static pressure that can exist at this point ahead of the shock? The gas is oxygen. |

## Problem related to aerial photographThe distance covered by an aerial photograph is determined by both the focal length of the camera and the tilt of the camera. Although the tilt is usually small, both archaeological and Canadian photographs often use larger tilts. |

## Why the prediction are less than the observed resultwhy the prediction are less than the observed result of connection in tension experiment? |

## 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? |

## Find the increase in vertical stresses due to the weightThe center to center spacing to the two tanks is 14 m. The new tank imparts 150 kPa at the ground surface. Find the increase in vertical stresses due to the weight of the two tanks mid- way between the two tanks at the center of the clay layer. |

## Write a mass balance equation for this chemicalAn industrial plant presently discharges a chemical (W=2000 * 106 gr/yr) to the lake. In addition, the inflow stream also contains the same chemical at a concentration of 15 mg/L. Note that the volumetric inflow and outflow are equal. |

## Determine minimum diameter required for a solid drive shaftThe engine of an automobile supplies 180 hp at 2500 rpm to the drive shaft. If the maximum shearing stress in the drive shaft must be limited to 6 ksi, determine the minimum diameter required (in inches) for a solid drive shaft. |

## Calculate how much energy must be added to the systemA piston-cylinder contains 40 kg water of which 20 kg is saturated liquid. The equilibrium pressure of the system is 100 kPa. a) Find the system initial volume b) The water undergoes an isothermal expansion until the pressure reaches 10 kPa. |

## Determine the length of pipe required for coliformThe maximum permissable fecal coliform concentration that may be discharged is 2,000 fecal coliform CFU/L. It is proposed that a pipe carrying the wastewater be used for disinfection process. |

## Determine what should the sample volume beThe dissolved oxygen of sample water is 1.5 mg/L. At 25 C, the dissolved oxygen of the dilution water is 8.25 mg/L. You are told the BOD5 of the sample is 130 mg/L. You have a target final dissolved oxygen of 3.0 mg/L (give yourself some leeway). |

## Determine the total elongation of the cable due to loadA 1-inch elevator cable is 1000 feet long. The modulus of elasticity for the cable is 25,000,000 psi. Determine the total elongation of the cable due to a load of 20,000 pounds. |

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