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A small cantilever vibrometer is available for measurement of vibration frequency, but the specification sheet is lost, so that the properties of the device are not known. The instrument is calibrated by placing it on a large compressor in the laboratory which is rotating at 300 ± 2.0 rpm. The measured length for resonance conditions is 5.6 cm ± 0.2 mm. Calculate the frequency that the instrument will indicate when L = 10 cm ± 0.5 mm. Also, calculate the uncertainty in the measurement in this length.
saturated vapor at 400 kia flowing in a line is taken out through a valve to 100 kpa. what is the temperature in c as
The inner and outer surfaces of a 5-m x 6-m brick wall of thickness 30 cm and thermal conductivity 0.69 W/m · °C are maintained at temperatures of 20°C and 5°C, respectively. Determine the rate of heat transfer through the wall, in W.
An air heater may be fabricated by coiling Nichrome wire and passing air in cross flow over the wire. Consider a heater fabricated from wire of diameter D=1 mm, L= 2m, electrical resistivity rho=10^-6 ohms, thermal conductivity k=25W/mK, and emiss..
Find the values of z0 and θ0 if w = 0 corresponds to z = ∞.
a rankine cycle power plant is to be used as a stationary power source for a polar research station. the working fluid
Express q(t) as a Fourier series expansion.
for straightening and smooting an air flow in a 50 cm diameter duct the duct is packed with a honeycomb of 35 cm long 4
Find the horizontal and vertical components of thrust which must be produced in order to hold the vehicle in the position shown. The vehicle itself is neutrally buoyant.
How many cycles will the material tolerate at a stress amplitude of +- 70MPa and zero mean stress? How will this change if the mean stress is 10 MPa? What if the mean stress is -10MPa? The tensile strength of the alloy is 200MPa.
The pressure and temperature at the beginning of compression in a Diesel cycle are 100 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 5 MPa and the temperature is 2500 K.
a charge of -3.30 microc is fixed in place. from a horizontal distance of 0.0435 m a particle of mass 7.65 10-3 kg and
a cylindrical tank of radius r and depth h is filled with water. the tank is open to atmosphere. derive an expression
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