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Train on tracks*
A 400-ton train runs south at a speed of 60 mi/h at a latitude of 60? north.
(a) What is the horizontal force on the tracks?
(b) What is the direction of the force?
Assuming that the occupants' body heat provides a continuous source of 320 W within the igloo, calculate the inside air temperature when the outside air temperature is Too = -40 C. Be sure to consider heat losses through the floor of the igloo.
In USA, 53% of total electric power is currently generated by coal-fired power plants. Typically, generation of 1 kWh of electricity by a coal-fired power plant produces 966 g of carbon dioxide (CO2). The world’s total wind energy capacity is 39,294 ..
many important engineering structures are often coated in a protective paint layer of some kind. this is not simply to
A rubber-tired scraper with an efficiency of 50 min/hr has a heaped capacity of 20 cu yd. If it is to move material with a swell factor of 25%, what amount of in-bank material can it move in 1 hr, assuming it has a total cycle time of 5 min?
Air enters a 3600-kW turbine operating at steady state with a mass flow rate of 18 kg/s at 800oC, 3 bar and a velocity of 100 m/s. The air expands adiabatically through the turbine and exits at a velocity of 150 m/s.
An ideal compressor compresses 12 kg/min of air from 300K and 100 KPA isothermally to a final pressure of 600 KPA. Determine the power and heat transfer in kW.
a radar speed-measurement device for state police is said to have an uncertainty of - 4 when directed straight at an
air at a pressure of 200 kpa and free stream temperature of 27 degc flows over a square plate at a velocity of 30 ms.
The heat transfer convection coefficient between the wall and the fluid is 500 W/m2.K. Find the maximum temperature in wall.
Neglect any friction and determine the torque M on the worm shaft required to generate a compressive force C in the press for the position
a furnace can deliver heat qh1 at th1 and it is proposed to use this to drive a heat engine with a rejection at tatm
If the member carries a compressive load of 20 kN, determine the stress in each material and the overall change in length.
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