Physics, 24.06.2019 17:30 depression4eternity

Assuming that the snow is of the "heavy" 10: 1 variety, for which 10 inches of snow will melt to produce 1 inch of water equivalent, determine: (a) the total mass of snow which must be melted per hour (in lbm and in kg). use the volume of water formed and the water density or specific volume (b) the total energy (heat) requirement needed to melt this snow (in btu/h and in kw). the heat of fusion (freezing/melting) for water is approximately 334 kj/kg or 144 btu/lbm. (c) "they say" that the biggest challenge to the snowmelt system is not high rates of snow, but rather very windy conditions. in this case, there is a significant additional rate of heat loss due to convection. assume the following conditions for a very windy day: surface temperature = 32°f, air temperature = 20°f, h = 150 w/m2k what would be the rate of heat loss due to convection for this situation (in btu/h and in kw)? so are "they" correct?

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 05:20

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

Answers: 1

Answer

Physics, 22.06.2019 11:30

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Answers: 1

Answer

Physics, 22.06.2019 20:40

Aloop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. a loop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. moving the loop outside of the magnetic field region. spin the loop such that its axis does not consistently line up with the magnetic field direction. change the magnitude of the magnetic field. change the diameter of the loop

Answers: 1

Answer

Physics, 22.06.2019 22:00

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?

Answers: 1

Answer

You know the right answer?

Assuming that the snow is of the "heavy" 10: 1 variety, for which 10 inches of snow will melt to pro...

Questions