Homework Answers
![I given that e = 97% -0.97 T = 35°C = 35+273 = 308k h = 1.81m wa yousom, L -0.32m. total area is A= 2[ch + L + wh] - 2 0-32(1](http://img.homeworklib.com/questions/a0eeae50-6a36-11eb-8870-8f1915330a14.png?x-oss-process=image/resize,w_560)
Add Answer to:
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature...
A) The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin...
A) The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.93 m, a width of 38.0 cm and a length of 26.5 cm. Calculate the power emitted by the human body. B) What is the wavelength of the peak in the spectral distribution for this temperature? C) Fortunately our environment radiates too. The human body absorbs this radiation with an...
A. The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin...
A. The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.55 m, a width of 33.0 cm and a length of 30.0 cm. Calculate the power emitted by the human body. B. What is the wavelength of the peak in the spectral distribution for this temperature? C. Fortunately our environment radiates too. The human body absorbs this radiation with an...
Course Contents » Last set : Set 10 ( 12 ... » Power emitted and absorbed...
Course Contents » Last set : Set 10 ( 12 ... » Power emitted and absorbed by the ... The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.69 m, a width of 34.5 cm and a length of 26.5 cm. Calculate the power emitted by the human body. Tries 0/12 What is the wavelength of the peak in the...
The skin temperature of a nude person is 32.0 °C and the surroundings are at 21.5°C....
The skin temperature of a nude person is 32.0 °C and the surroundings are at 21.5°C. The emissivity of skin is 0.900, and the surface area of the person is 1.55 m2 What is the rate P at which energy radiates from the person? 89 P = W What is the net energy loss AE from the body in 4 min by radiation? 21480 ΔΕ- J
10/700 Resources Feedback The skin temperature of a nude person is 32.0°C and the surroundings are...
10/700 Resources Feedback The skin temperature of a nude person is 32.0°C and the surroundings are at 23.0°C. The emissivity of skin is 0.915, and the surface area of the person is 1.55 m² What is the rate Pat which energy radiates from the person? P= 78.57 What is the net energy loss AE from the body in 3 min by radiation? AE = 14143
How much power (power is the energy per second) is radiated by the person
Radiation of Energy The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation: = aeAT4 where o 5.67x10-8 J/s - m2 K is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates An ideal jet-black (or black body) radiator has e 1,whereas a perfect reflector has...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation = ceAT4 t where a 5.67x108 J/(s m2. K4) is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates. An ideal jet-black (or black body) radiator has e 1, whereas a perfect reflector has e...
In this problem you will consider the balance of thermal energy radiated and absorbed by a...
In this problem you will consider the balance of thermal energy radiated and absorbed by a person. Assume that the person is wearing only a skimpy bathing suit of negligible area. As a rough approximation, the area of a human body may be considered to be that of the sides of a cylinder of length L=2.0m and circumference C=0.8m. For the Stefan-Boltzmann constant use σ=5.67×10−8W/m2/K4. Part A If the surface temperature of the skin is taken to be T_body=30∘C, how...
Number three please The temperature of a student's skin is 33.0 degree C. At what wavelength...
Number three please
The temperature of a student's skin is 33.0 degree C. At what wavelength does the radiation emitted from the skin reach its peak? The radius of our Sun is 6.96 times 10^8 m, and its total power output is 3.85 times 10^26 W. (a) Assuming the Sun's surface emits as a black body, calculate its surface temperature. (b) Using the result of part (a), find lambda_max for the Sun. Calculate the energy in electron volts of a...
How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 19 cm at a temperature of 24 °C? Expres...
How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 19 cm at a temperature of 24 °C? Express your answer to two significant figures and include the appropriate units. 42 = 70 Submit Previous Answers ✓ Correct Part B If the sphere is enclosed in a room whose walls are kept at -5 °C, what is the net flow rate of energy out of the sphere? Express your answer to two significant figures and...
The skin temperature of a nude person is 32.0 °C and the surroundings are at 21.5°C. The emissivity of skin is 0.900, and the surface area of the person is 1.55 m2 What is the rate P at which energy radiates from the person? 89 P = W What is the net energy loss AE from the body in 4 min by radiation? 21480 ΔΕ- J
10/700 Resources Feedback The skin temperature of a nude person is 32.0°C and the surroundings are at 23.0°C. The emissivity of skin is 0.915, and the surface area of the person is 1.55 m² What is the rate Pat which energy radiates from the person? P= 78.57 What is the net energy loss AE from the body in 3 min by radiation? AE = 14143
Radiation of Energy The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation: = aeAT4 where o 5.67x10-8 J/s - m2 K is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates An ideal jet-black (or black body) radiator has e 1,whereas a perfect reflector has...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation = ceAT4 t where a 5.67x108 J/(s m2. K4) is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates. An ideal jet-black (or black body) radiator has e 1, whereas a perfect reflector has e...
Number three please
The temperature of a student's skin is 33.0 degree C. At what wavelength does the radiation emitted from the skin reach its peak? The radius of our Sun is 6.96 times 10^8 m, and its total power output is 3.85 times 10^26 W. (a) Assuming the Sun's surface emits as a black body, calculate its surface temperature. (b) Using the result of part (a), find lambda_max for the Sun. Calculate the energy in electron volts of a...
How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 19 cm at a temperature of 24 °C? Express your answer to two significant figures and include the appropriate units. 42 = 70 Submit Previous Answers ✓ Correct Part B If the sphere is enclosed in a room whose walls are kept at -5 °C, what is the net flow rate of energy out of the sphere? Express your answer to two significant figures and...
Most questions answered within 3 hours.
-
A laser used in LASIK eye surgery produces 50 pulses per second.
The wavelength is 192...
asked 5 minutes ago -
Smith Inc. recently reported operating income of $2.75 million,
depreciation of $1.20 million, and had a...
asked 5 minutes ago -
A
nurse is trying to understand the structure and chain of command of
a healthcare organization....
asked 8 minutes ago -
Two buckets of mass 17.1 kg and 11.3 kg are attached to the ends
of a...
asked 7 minutes ago -
A company is interested in estimating the costs of lunch
in their cafeteria. After surveying employees,...
asked 12 minutes ago -
A woman expends 94 kJ of energy in walking a kilometer. The
energy is supplied by...
asked 23 minutes ago -
Our ability to see distinct edges as well as our errors in
contrast perceptions (e.g., seeing...
asked 14 minutes ago -
you want to measure the gravitational acceleration at your
location. since g does not vary significantly...
asked 28 minutes ago -
Aside from commercial tools that are specifically geared toward
TAR/PC( Technology-Assisted Review), are there potential
alternative...
asked 30 minutes ago -
the period of a pendulum on earth is 5 seconds. what will be the
period of...
asked 46 minutes ago -
The
act of turning media against itself, such as flash mobs and
billboard is called
a....
asked 42 minutes ago -
A set of length measurements are obtained with the values 165.6
± 0.3, 165.1± 0.4,166.4± 1.0,...
asked 43 minutes ago