How far behind pinhole should you place the viewing screen
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.2 cm. You have a helium-neon laser (landa= 633 nm) and a 0.13 mm-diameter pinhole. How far behind the pinhole should you place the viewing screen?
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A solar concentrating heat exchanger system directs sunlight onto a large, straight pipe. Show whether this system violates the second law of thermodynamics.
You throw a ball upward with an initial speed of 4.6 {\rm m/s}. When it returns to your hand 0.94 {\rm s} later, it has the same speed in the downward direction (assuming air resistance can be ignored). What was the average acceleration vector of
A steam turbine is limited to a maximum inlet temperature of 800°C. What is the maximum power output per unit mass flow rate?
Suppose that you titrate a 3 g sample of orange juice and it turns out to contain only 95.5mg of vitamin C. Further, it took 32.45mL of DCP solution to reach the end point of the titration.
A helium-neon laser beam has a wavelength in air of 633 nm . It takes 1.38 ns for the light to travel through 30 cm of an unknown liquid. What is the wavelength of the laser beam in the liquid?
Methane enters a heat exchanger at a volumetric flow rate of 120.0 m3/min, at a pressure of 1.013 bar and temperature of 5.0°C. At these conditions, the specific enthalpy of methane is -45.181 kJ/kg.
A certain piano string and an A440 tuning fork heard together give 3 beats per second. What are the 2 possible values for the frequency of the string vibration?
If 15.0 m3/min of steam at 450.0°C and 10.0 bar enters a turbine and leaves as saturated steam at 9.25 bar, what is the volumetric flow rate of steam leaving the turbine? If the turbine operates adiabatically, what is the work output?
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