A magnetic separator processes 500 kg/hr of finely ground magnetite ore (Fe3O4). The ore containes 35% magnetite and an analysis of the concentrate and tailings shows that they contain 59.5% Fe and 3.8% Fe respectively a. calculate the mass flow rate (in kg/hr) for the concentrate stream b. calculate the magnetite recovery (%)

Calculate the re-circulating load in the secondary crusher : A two stage crushing operation feeds 0.6 m diameter ore into a primary crusher at a rate of 25mt/hr. 80% of the ore feeds through an 0.2m screen into a secondary crusher. 65% of the ore from the secondary crusher comes out of a 50mm screen. |

How far horizontally off the edge does it hit the water : a student throws a rock with speed 20.0 m/s at 30 degrees off the edge of a cliff. how far horizontally off the edge does it hit the water |

At what level of ebit eps be identical for plans i and ii : Blue Stripes Co. is comparing two different capital structures. Plan I would result in 9,000 shares of stock and $342,000 in debt. Plan II would result in 12,600 shares of stock and $205,200 in debt. The interest rate on the debt is 10 percent. |

Calculate the mass flow rate for the concentrate stream : A magnetic separator processes 500 kg/hr of finely ground magnetite ore (Fe3O4). The ore containes 35% magnetite and an analysis of the concentrate and tailings shows that they contain 59.5% Fe and 3.8% Fe |

What must be the power of the horns output to achive : a ship's horn can be heard above typical background noise if at intensity level 20 dB. what must be the power of the horn's output to achive this level at 5.0 km away |

What is the incremental free cash flow for year one : Working capital is expected to increase by $5,000 at the inception of the project, but this amount will be recaptured at the end of year five. What is the incremental free cash flow for year one? |

A power plant operates a regenerative rankine cycle : A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr. When the steam exits the boiler it's temperature is 1000°F and its pressure is 1400psi... |

Find is this a transverse wave or a longtudinal wave : a physics instrustor shakes a 2.0 m long alumium rod to create the pattern, find is this a transverse wave or a longtudinal wave |

## What will be the mass of the rod at the end of 20 minsA common commercial process for the production of so-called "Electronic Grade Silicon" (EGS) is the Siemens process (see figure below). EGS is of ultra-high purity, enough to be used for fabrication of microchips. |

## What is the engine speed in revolutions per minuteThe air density is 0.00206 slugs/cuft. The car has frontal area of 19.8 sqft, a drag coefficient of 0.28, a wheel radius of 12.6 inches, a drive axle slippage of 3%, and a drivetrain efficiency of 88%. |

## Find what flow of water in gallons per second is requiredThe volume of water in a reservoir is often expressed using the unit of acre-foot. A volume of 1 acre-foot is the amount of water covering an area of 1 acre to a depth of 1 foot. Lake Mead is the largest man-made lake in the United States. |

## Calculate by what factor the mass of propane has increasedA typical propane tank that we use for barbeque initially contains a pressure of 10 psi. The pressure is low, so we take it to the local store to fill the tank with more propane. After filling,the pressure is 100 psi. |

## Determine the force developed along strut ad for equilibriumPart A Determine the tension developed in cable AB for equilibrium of the 350-lb crate Part B Determine the tension developed in cables AC for equilibrium of the 350-lb crate. Part C Determine the force developed along strut AD for equilibrium of .. |

## Length of contracted rectangular weirA trapezoidal canal 6m wide at the bottom and having a side slope of 1V:2H carries water with a mean velocity of 1.0m/s to a depth of 60cm. What length of contracted rectangular weir 1.0m high should be placed at the middle of the canal to make th.. |

## Determine the normal depth in a trapezoidal channelDetermine the normal depth in a trapezoidal channel with a bottom width of 6.4 ft and side slopes of 1 vertical to 2 horizontal. The discharge is 85 ft3/s. Manning's roughness factor is 0.025 and the channel bottom slope is 0.001 |

## Determine the corresponding valueLink ABrotates through a limited range of angle β, and its end Acauses the slotted link ACto rotate also. For the instant represented where β= 60 and = 0.6 rad/sconstant, determine the corresponding value of r r'. |

## Determine what percent of the hocl is dissociatedA solution of HOCl is prepared in water by adding 15 mg HOCl to a volumetric flask, and adding water to the 1.0 L mark. The final pH is measured to be 7.0. What are the concentrations of HOCl and OCl |

## What is the steady-state concentration of salt in the tankA 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 .. |

## Define concept of cstrConcept of CSTR, A lagoon is to be designed to accommodate an input flow of 0.10 m^3/s of nonconservative pollutant with concentration 30.0mg/L and reaction rate 0.20/day |

## How much error would there be in the volume calculationAssume the actual water temperature for calibrating a 1/3 ft3 measure was 65 degrees F. If you had used a water temperature of 75 degrees F for your calibration, how much error would there be in your volume calculation (both in ft3 and as a percen.. |

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