Bundle: Physics For Scientists And Engineers With Modern Physics, 10th + Webassign Printed Access Card For Serway/jewett's Physics For Scientists And Engineers, 10th, Multi-term
10th Edition
ISBN: 9781337888516
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 19, Problem 23P
To determine
The net transfer of energy from the body by
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A student is trying to decide what to wear. His bedroom
is at 20°C. His skin temperature is 35°C. The area of his
exposed skin is 1.50 m². People of all races have skin
that is dark in the infrared, with emissivity about 0.900.
Find the net energy loss from his body by radiation in
10.0 min.
A student is trying to decide what to wear.His bedroom is at 20.0 degrees Celcius.His skin Temperature is 25 degrees Celsius.The area of his exposed skin is 1.50 square mitres.People all over the world have dark skin with emessivity about 0.900.Find the net energy transfer from his body by radiation in 10.0 minutes
A student is trying to decide what to wear. His bedroom is at 20.0°C. His skin temperature is 35.0°C. The area of his exposed skin is 1.50 m2. People all over the world have skin that is dark in the infrared, with emissivity about 0.900.Find the net energy transfer from his body by radiation in 10.0 min.
Chapter 19 Solutions
Bundle: Physics For Scientists And Engineers With Modern Physics, 10th + Webassign Printed Access Card For Serway/jewett's Physics For Scientists And Engineers, 10th, Multi-term
Ch. 19.2 - Prob. 19.1QQCh. 19.3 - Prob. 19.2QQCh. 19.5 - Prob. 19.3QQCh. 19.5 - Characterize the paths in Figure 19.12 as...Ch. 19.6 - Prob. 19.5QQCh. 19 - Prob. 1PCh. 19 - The highest waterfall in the world is the Salto...Ch. 19 - Prob. 3PCh. 19 - The temperature of a silver bar rises by 10.0C...Ch. 19 - You are working in your kitchen preparing lunch...
Ch. 19 - If water with a mass mk at temperature Tk is...Ch. 19 - Prob. 7PCh. 19 - An electric drill with a steel drill bit of mass m...Ch. 19 - Prob. 9PCh. 19 - How much energy is required to change a 40.0-g ice...Ch. 19 - Prob. 11PCh. 19 - Prob. 12PCh. 19 - In an insulated vessel, 250 g of ice at 0C is...Ch. 19 - Prob. 14PCh. 19 - One mole of an ideal gas is warmed slowly so that...Ch. 19 - (a) Determine the work done on a gas that expands...Ch. 19 - A thermodynamic system undergoes a process in...Ch. 19 - Prob. 18PCh. 19 - A 2.00-mol sample of helium gas initially at 300...Ch. 19 - (a) How much work is done on the steam when 1.00...Ch. 19 - A 1.00-kg block of aluminum is warmed at...Ch. 19 - In Figure P19.22, the change in internal energy of...Ch. 19 - Prob. 23PCh. 19 - A concrete slab is 12.0 cm thick and has an area...Ch. 19 - Two lightbulbs have cylindrical filaments much...Ch. 19 - Prob. 26PCh. 19 - (a) Calculate the R-value of a thermal window made...Ch. 19 - Prob. 28PCh. 19 - Gas in a container is at a pressure of 1.50 atm...Ch. 19 - Prob. 30APCh. 19 - You have a particular interest in automobile...Ch. 19 - Prob. 32APCh. 19 - Prob. 33APCh. 19 - Prob. 34APCh. 19 - Review. Following a collision between a large...Ch. 19 - Prob. 36APCh. 19 - An ice-cube tray is filled with 75.0 g of water....Ch. 19 - Prob. 38APCh. 19 - An iron plate is held against an iron wheel so...Ch. 19 - One mole of an ideal gas is contained in a...Ch. 19 - Prob. 41APCh. 19 - Prob. 42APCh. 19 - Prob. 43APCh. 19 - A student measures the following data in a...Ch. 19 - (a) The inside of a hollow cylinder is maintained...Ch. 19 - Prob. 46CPCh. 19 - Prob. 47CP
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- The surface area of an unclothed person is 1.50 m2, and his skin temperature is 33.0C. The person is located in a dark room with a temperature of 20.0C, and the emissivity of the skin is e = 0.95. (a) At what rate is energy radiated by the body? (b) What is the significance of the sign of your answer?arrow_forwardA student tries to decide what to wear. His room is at 20˚C. Its skin temperature is 35˚C. The area of his exposed skin is 1.5 m2. People all over the world have dark skin in the infrared, with an emissivity of around 0.90. Find the net energy transfer of your body by radiation in 10 min. Answer: 7.49X104Jarrow_forwardA student is trying to decide what to wear.His bedroom is at 20°c.His skin Temperature is 35.0°c.The area of his exposed skin is 1.50 sq.mitres.People all over the world have skin that is dark in the infrared,with emessivity about 0.900.Find the net energy transfer from his body by radiation in 10.0 minutes.arrow_forward
- What is the rate of heat transfer by radiation, with an unclothed person standing in a dark room whose ambient temperature is 22.0C. The person has a normal skin temperature of 33.0C and a surface area of 1.50 m2. The emissivity of skin is 0.97 in the infrared, where the radiation takes place.arrow_forwardThe robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 10.7 W. H0ORU's surface area is 1.67 m? and the emissivity of its surface is 0.227. Ignoring the radiation that HooRU absorbs from the cold universe, what is HooRU's temperature T? T = Karrow_forwardA classroom has dimensions 8.00 m x 10.00 m x 3.00 m. A 1000 W electric space heater is being used to warm the room from 5.00°C to 20.00°C on a cold morning. If the density of air is 1.29 kg/m°, and the specific heat capacity of air is 1004 J/(kg-K), how long will it take to heat the room? Assume no loss of thermal energy to the surroundings. A) 1.30 minutes B) 241 minutes C) 45.3 minutes O D) 77.7 minutesarrow_forward
- 25. B. A spherical infrared heater of radius 5.85 cm and an emissivity of 0.71 radiates 0.44 kW of power. Given, Stefan's constant = 5.67x10^-8 Wm^-2K^-4. Calculate, Temperature of the heater in Celsius:arrow_forwardThe filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0. The temperature of the filament is 3×1000°C. What should be the length of the filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 · K4. Please give your answer with 3 decimal places.arrow_forwardThe amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 240 J/s. The energy is transferred a distance of 2.0 × 10-³ m through a body whose surface area is 1.6 m?. Assuming that the thermal conductivity is that of body fat, determine the temperature difference between the capillaries and the surface of the skin. 1.arrow_forward
- A concerned mother is dressing her child for play in the snow. The child's skin temperature is 35.0°C, and the outside air temperature is 1.25°C. If the emissivity of the child's skin is 0.770 and he has 1.25 x 10-2 m² of exposed skin area, what is the amount of energy transferred from his body to the surroundings in 1.00 h? 6347.5177 X Jarrow_forwardThe glowing filament in a lamp is radiating energy at a rate of 60 W. At the filament’s temperature of 1500°C, the emissivity is 0.23. What is the surface area of the filament?arrow_forwardA solar collector is placed in direct sunlight where it absorbs energy at the rate of 840 J/s for each square meter of its surface. The emissivity of the solar collector is e = 0.66. What equilibrium temperature does the collector reach? Assume that the only energy loss is due to the emission of radiation.arrow_forward
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