How much work is done if the pump runs for ten hours
A water pump pumps out 2400kg of water pr min. (A) if water coming out with a velocity of 3m/s, what is power of the pump? (b) how much work is done if the pump runs for 10 hours?
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In a holography setup such as that of Fig. 15-5, the distance , and the distance . What must be the frequency width of the laser used? If the laser is a He-Ne width, what is the corresponding width in wavelength? A GaAs diode laser has a cavity f
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A GaAs diode laser has a cavity formed by the Fresnel reflections from the end facets of the GaAs chip, which is 0.8 mm long. If the laser wavelength (in air) is 850 nm, determine the approximate mode number and the mode spacing (in nm) for this l
The mean score of the first calculus exam was 81%. The standard deviation was 12%. Find the smallest interval about the mean that contains at least 71% of the scores. Could you please explain all the steps?
An air-spaced Fabry-Perot interferometer has mirror spacing 0.15 mm and mirror reflectivity R = 0.99. It is used to measure the spectrum of the sodium doublet, which consists of two closely spaced emission lines at 588.995 and 589.592 nm. (a) Dete
Richter Company has a single product called a Wim. The company normally produces and sells 87,000 Wims each year at a selling price of $40 per unit.
A levitation fan has been selected that delivers this pressure at a flowrate of 0.032 m3/s. What is the resulting gap height (in mm)? Assume the density of air is 1.19 kg/m3.
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