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The following questions deal with laser sources in Raman spectroscopy.6 The following questions deal with laser sources in Raman spectroscopy.
(a) Under what circumstances would a helium-neon laser be preferable to an argon-ion laser?
(b) Under what circumstances would a diode laser be preferable to an argon-ion or helium-neon laser?
(c) Why are ultraviolet emitting sources avoided?
the pressure of 200 kgs of water is to be increased from 1 atm to 4 mpa. the water enters through a 20-cm-diameter pipe
What is the kinetic energy (in Btu) associated with a 300 gm hockey puck flying at 120 mph? Assuming an ideal gas, calculate the specific volume in the appropriate units for: Calculate the specific enthalpy change (in the appropriate units) for the f..
The resistance of the coil is 0.2 ohm. The inductance of the coil is 1.2e-4 H. The rotor inertia is 1.0e-5 kg m2. The current to torque gain is 0.03 Nm/A. The friction torque is 0.09 Nm. A 12 V voltage source is applied to the motor. Derive the equat..
the figure below shows the geometrical stress concentration factor k for a flat bar loaded in uniaxial tension. the
How does DN differ qualitatively from the volume mean diameter Dv
Steam at 500 kPa, 300 degrees C is used to heat cold water at 15 degrees C to 75 C for a domestic hot water supply. How much steam per kilogram of liquid water is needed if the steam should not condense?
The strut is 5.75 ft long and is assumed to be pin-connected at both ends.
describe the three parts sensortransducer signal conditioning output stage of the following measurement systems
an ideal gas undergoes two processes in a piston cylinder device from 1-2 a polvtropic compression from t1 and p1 with
A small 6-mm diameter pin was designed using ASTM no. 40 cast iron to withstand an axial compressive load of 3.5kN combined with a tensional load of 9.8 N.m. Calculate the factor of safety the designer m must have used.
Air at 5 bar and 177°C (State 1) is expanded through a turbine to 1 bar and 27°C (State 2). The mass flow rate of air through the turbine is 2 kg/s. Stray heat loss of 53.22 kW occurs to a surrounding at 27°C. Calculate the power (kW) developed by th..
a desktop computer is to be cooled by a fan. the electronic components of the computer consume 60 w of power under
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