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1.a tower is surrounded by a wall that is 10 m high and 30 m away from the base of the tower. compute the length of the shortest ladder that can stand outside the wall and lean against the tower.
2.For a steel stack that exhaust 1200 m^3/min of gases at 1atm and 400 K, calculate the inner diameter if you are designing for a maximum expected wind speed at the stack of 12m/s.
3.Assume 0.1 kg of air initially at 200 kPa and 300 K undergoes an isothermal compression process to a volume of 0.02 m3. Find the work done in the process and the final pressure. Sketch the process on a P-V diagram.
The flowrate through an open channel with a slope of 2 % is calculated using Manning's equation at 100 cubic feet per second. If the slope of the channel is doubled to 4%
A temporary flood wall has been constructed to protect several homes in the floodplain. the wall was built to withstand any discharge up to the 20-year period after all the homes have been relocated.
The electrical power supplied to the motor is 90 kW. The motor in turn delivers 100 hp at a speed of 1000 rpm to a hoist arrangement for an elevator. Define the electric motor as the system and calculate the rate of work for the system.
Calculate the exact alkalinity (in mg/L as CaCO3) of a water containing 58.01 mg/L of bicarbonate ion and 160.22 mg/L ofcarbonate ion. The water has a pH of 10.47.
There are 10 vehicles in a queue when an attendant opens a toll booth. Vehicles arrive at the booth at a rate of 4 per minute. The attendant opens the booth and improves the service rate over time following the function u(t) = 1.1 + .30t, where u(..
A 1: 1½ : 3 mix (by mass) has a water/cement ratio of 0.4 and a cement content of (400) kg/m3. The temperatures of the ingredients are as follows
a train 552 m long is moving on a straight track with a speed of 88.5 kmh. the engineer applies the brakes at a
Seawater flows steadily into an open 100 liter tank initially filled completely with freshwater. The freshwater mixes thoroughly with the seawater and the mixture overflows out of the tank.
To provide a source of cooling on this hot Florida day, the piston is now pulled up until the air reaches a temperature of -100C. It can be assumed that the process is a polytropic one with.
An ideal Brayton refrigeration cycle has a compressor ratio of 3.75. The air enters the compressor at 1bar, 27°C. The temperature at the inlet of the turbine is 77°C. Using Air Standard Method Determine on a per unit mass of air flowing
Consider the plane polar coordinate velocity distribution V_r=C/r, V_0=K/r, V_z=0, where C and K are constants (a) determine if the equation of continuity is satisfied (b) by sketching some velocity vector directions
The force is applied at the two pins. The pins allow rotation around the z-axis and do not allow rotation around the y-axis. The length of the beam between the pins is 8m. Determine the maximum allowable compressive force that can be applied.
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