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A coal fired steam power plant is to be designed for the purpose of generating electrical power for a city with a population of 60,000 residents. Based on an order-of-magnitude analysis, it is estmiated that each resident will consume an average energy of 55MJ per day. The coal-fired boilder supplies 70 MW to the steam while thermal energy is rejected to a nearby lake whos average temperature is 15 C. What is the minimum required temperture of the boiler to meet the power demands of the city?
A projectile is fired with an initial velocity of 800 ft/s at a target B located 2000 feet above the gun A and at a horizontal distance of 12,000 feet. Neglecting air resistance, determine the value of the angle at which the projectile is fired.
Determine the normal stress in a soccer ball if the internal pressure is 110 kPa, the outside diameter is 220mm and the wall thickness is 3mm .
Describe the given types of bonding agents found with clay minerals. a) hydrogen bond b) covalent bond c) van der walls forces d) james bond e) ward bonds f) war bonds.
A radioactive waste from a clinical laboratory contains 0.2 μCi (microcuries) of calcium-45 (45Ca) per liter. The half-life of 45Ca is 152 days.
The setting velocity of a particle is 0.002 m/s and the overflow rate of a settling tank is 0.008 m/s. (a) what percent of the particles does the settling tank capture. If the particles are flocculated so that thie rsettling rate is 0.05 m/s
A power plant operates at steady-state. It receives energy from a hot source (combustion of fuel) at a temperature of 420 oC. The plant discharges this energy to a nearby river that acts as a cold source.
Describe some of the benefits of physical models and mock-ups. What data are required to measure the following cost-effectiveness, system effectiveness, operational availability, and life-cycle cost?
The tank has an inner diameter of 1.5 m and a wall thickness of 18 mm. If the pressure in the tank is p=1.20MPa, determine the force in the 16 bolts that are used to attach the cap to the tank. Also, specify the state of stress in the wall of the ..
A reservoir discharges into a long trapezoidal channel with a bottom width of 20 feet, 3 to 1 side slopes, a bottom slope 0.001 and a roughness coefficient of 0.025 the reservoir surface is 10 feet above the invert at the channel entrance
Motor M draws in the cable with an acceleration of 4 , measured relative to the 220 mine car. Determine the acceleration of the car. Neglect the mass of the pulleys.
The aluminum end and the copper end are maintained at temperatures of 50°C and 260°C, respectively. The thermal conductivities of aluminum and copper are 205 and 385 W/m · K, respectively. The temperature of the aluminum-copper junction in the rod..
Roller coasters are designed so that the riders will not experience more than a certain level of g-force during the ride. (The rider would experience B g's if hte normal force were Bmg where B is a numbe
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