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If the reaction of the concrete on the post can be approximated by the distributed loading shown, determine the intensity of w1 and w2 so that the resultant force and couple moment on the post due t
Calculate the final temperature and net work per kg. If a diatomic gas had been used instead of helium, would the final temperature be higher or lower?
A machine cost $40000 to purchase and $10000 per year to operate. the machine has no salvage value, and a 10 year life. If i- 10% per year compounded annually what is the present worth?
What series of equal payments is economically equivalent to what present sum, if the quarterly payments are invested at annual rate of 8%, compounded quarterly?
What is the overall shortening of S of the bar? If the compressive stress in the bar cannot exceed 48 MPa, what is the maximum permissible value of load P?
The radioisotope 224Ra decays by a emission primarily to the ground state of 220Rn (94% probability) and to the first excited state 0.241 MeV above the ground state (5.5% probability).
An air-water manometer is connected to a pitot-static tube used to measure air velocity. if the manometer deflects 2in., what is the velocity? assume T=60F and p=15 psia.
Determine the magnitude of the acceleration of the train engine moving with a constant speed of 40 ft/sec when it is at a point x=600 ft.
If kerosene at 68 degrees F is flowing and the deduction on a mercury-kerosene manometer connected to the pitot tube is 4 in., what is the velocity?
The electric field between the plates is increasing at the rate 1.1 106 V/(m · s). What is the magnetic field strength at the following distances from the axis.
Determine (a) the shortest distance in which the train can reach a speed of 72 km/h, (b) the corresponding constant rate of acceleration At.
What would be the actual velocity of the air at the exit with the results obtained above? If you were to use this exit velocity what result would you get for your temperature at the exit?
The flat plate has a uniform surface temperature of 35 deg C. If the friction force asserted of the flat plate is 0.1 N, determine the rate of heat transfer from the plate.
The specific heat of water is 4185 J/(kg K). After the heater is started, how long will it take the heater to raise the water temperature to 90 degrees C?
What is the final temperature of the air? if the heat is transferred during a constant pressure process, what is the final temperature of the air?
Characteristic length of L = 5m, is maintained at a surface temperature of Ts = 400K and is placed in atmospheric air at T1 = 300K, what will the value of the average convection coefficient be if th
If the face of the sign is subjected to a uniform pressure of a = 164 lb/ft2, determine the state of stress at points C and D. The sign has a width of 11.3 ft.
Calculate the state of stress at point B and draw it on an area element. Calculate the shear stress on an area element at B that is aligned at 45 degrees CCW with respect to the x-axis.
The inlet velocity is 3 m/s and the pipe is well insulated (no heat transfer). The specific enthalpy decreases by 25 kJ/kg from inlet to exit. Determine the velocity at the exit, in m/s.
Air with a volume of 0.5 m3 under the piston is heated so that the piston moves up. Find the total heat transfer to the air when the piston has been pushed up to the top end of the cylinder.
Determine (a) the volume flow rate of air through the fan (ft 3/s) and (b) the minimum power (hp) input required for the fan.
Calculate the effective annual IRR being earned on the investment. B. If the dollars invested and withdrawn from part a are in actual dollars and the inflation rate for the 19 year time span of the
Describe the advantages and disadvantages of using a tachometer for velocity measurement 3. what are some specific application of a potentiometer and tachometer in a robot?
Determine (a) The rate of stray heat transfer, in kW. (b) The rate of heat transfer to the refrigerant, in kW (c) The mass flow rate of the refrigerant, in kg/s (d) The total heat transfer for the p
Determine the position of the particle when t=6 s and the total distance it travels through the 6-s time interval. Plot the path to determine the total distance traveled.