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1. 7000 m3 /min of air at 28.0°C and 0.101 MPa with a relative humidity of 60.0% is to be cooled at constant total pressure to its dew point temperature. Determine the required heat transfer rate and indicate its direction.
2. 30 ft3 /min of air with a dry bulb temperature of 90.0°F and a relative humidity of 80.0% is to be cooled and dehumidified to a dry bulb temperature of 65.0°F and a relative humidity of 50.0%.
Determine
(a) the wet bulb temperature of the air before dehumidification,
(b) the dew point temperature of the air after dehumidification,
(c) the amount of moisture removed during the dehumidification process, and
(d) the amount of heat removed during the cooling part of the dehumidification process.
A 5 kg mass is connected to a spring (1000 N/m) platform which undergoes simple harmonic motion in the vertical direction with two complete oscillations each second. What is the angular frequency of the box
What is the horizontal distance x from the edge of the dock to the keys - A flashlight held directly above the dock edge and 0.50 m above the water illuminates the keys when it's pointed at 400 to the vertical.
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree, as well as its height, How far away is the tree
Use the unit factor method to solve the following problems. Set up each problem in the exact same way (using all six steps). Show all your work. Apples sell for 43 cents a pound. How much do 3.2 pounds of apples cost? Gold costs $500 per ounce. A sol..
A typical compact disc stores information in tiny pits on the disc's surface. What's the frequency of electromagnetic waves that have a wavelength equal to the typical CD pit size
The Effective Current and Voltage in an AC Circuit: An AC current varies from -5.65 A to +5.65 A. Find the effective value of the current. What DC current would give the same effect?
A guitar string is tuned to an E4, The concert pitch standard A440 has a frequency of 440 Hz. What is the wavelength of this pitch in air
A string of length 2.6 m is fixedat both ends. When the string vibrates at a frequency of84.0 Hz, a standing wave with6 loops is formed. What is the wavelength of the waves that travel on the string
In the operating room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery. What is the magnitude of the magnetic field that the spectrometer uses
The refracting telescope at the Yerkes Observatory has a 1.00-m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 1.90 cm. (a) Determine the magnification of Mars as seen through this telescope.
A container with two moveable pistons is filled with incompressible oil with a specific gravity of 0.8. The larger piston has an area of 10,000 mm2 and on it is a car with weight of 10,000 N and a specific gravity of 2.0.
calculate the electric field at the center of a square 50.6 cm on a side if one corner is occupied by a 43.0 microc
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