During an aerobics class-how much water is lost
During an aerobics class, a person gives off 1200 kJ of heat energy in 45 minutes. Assuming all this energy is used to evaporate water from the skin, how much water is lost? The latent heat of evaporation is 2,300 kJ/kg.
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A source moving with a speed 34 m/s, emits a sound wave with a frequency f = 351 Hz. Determine the frequency detected by a stationary observer if the speed of sound is v = 334 m/s and the source is moving towards the observer.
Ddetermine (a) the volumetric flow rate of water through the hose and nozzle, (b) the mass flow rate of water through the hose and nozzle.
A random sample of children in two different schools found that 16 of 42 at one school and 21 of 36 at the other had this infection. At the ? = 0.05 level of significance, is there sufficient evidence to conclude that a difference exists between t
If the charge is moving at a speed of 3.7 x 104 m/s perpendicular to the magnetic field of the electromagnetic wave, find the magnitudes of the (c) electric and (d) magnetic forces exerted on the particle.
A pressure vessel having a volume of 30 ft^3 contains saturated steam at 500 F. Determine the heat transfer to the tank when half of the contents of the tank has been removed.
If 70g of a substance at 84 degrees celsius is dropped into a container with 100 g of water at 13 degrees C, what is the specific heat capacity of the substance if the temperature of the water increases 20 degrees celsius?
What is the intensity of the sound at? How far from the source must you go so that the intensity is one-fourth of what it was at ?
If you removed the original magnet, and replaced it with a magnet made of the same material, but with a mass of 30 g (magnet B), approximately what would be the magnetic field at a location 0.18 m from the center of the magnet, on the axis of the
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Describe the characteristics that define Religious, Utopian, and Health Movements
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