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An antenna used for research at a university is shown. It has the feature that it is easily raised and lowered so that it can be outfitted with different equipment. The antenna is pinned to a supporting frame at point A, and it is raised and lowered using the gear at B to which a hand crank is attached. The antenna and its attached sector gear weigh 300 and 120 lb, respectively, and the 100 lb horizontal force at point C models the effect of wind loads during a storm. If the gear at B is locked so it does not rotate, determine the gear tooth force and the reactions at A.
one kilogram of saturated liquid methane at 160 k is placed in an adiabatic piston-and-cylinder device and the piston
a wind tunnel is 6m long and has a cross section of 1m2. air flows through at 70ms at standard sea-level conditions
You have been asked to test a method called 'catWhiteSpace' in a 'Paragraph' object that, within the paragraph, replaces sequences of blank characters with a single blank character.
An induction machine has a 3-phase stator winding as shown in Figure 6.2-1 and a two-phase rotor winding as shown in Figure 1.4-1. Develop the equivalent circuits for this machine in the arbitrary reference frame.
This usually means an antenna between λ/50 to λ/10 in length. Given: In the short dipole, the current is linear: I(z') = I0(1 - (2/l)|z'|), where I = λ/20 is the total length of the dipole and 10 is constant.
determine a the velocity and acceleration of point p on the rim of the wheel when t0.5 s and b the total distance the
The internal pressure p = 3.5 MPa and the torque T= 450 N·m.What is the maximum permissible value of the forces P if the allowable tensile stress in the wall of the cylinder is 72 MPa?
In a dairy plant, milk at 4°C is pasteurized continuously at 72°C at a rate of 12 L/s for 24 h a day and 365 days a year. The milk is heated to the pasteurizing temperature by hot water heated in a natural-gas-fired boiler that has an efficiency o..
a mixture of 1 mol of h2o 2 mol of o2 and 5 mol of n2 is heated to 2200 k at a pressure of 5 atm. assuming the
Application: λ/4 transformer. Show that two lines with any characteristic (real) impedances Z1 and Z2 may be matched with a quarter-wavelength line. What is the characteristic impedance of the matching section?
Prepare a FMECA analysis on a HDS reactor. All the information about the reactor are attaches including the format required for the FMECA.
the turntable of a record player rotates initially at the rate 33 revmin and takes 14.07 s to come to rest. what is the
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