Question: A 3.0-cm-diameter sphere is maintained at 1000C and has an emissivity of 0.6. It is enclosed by another sphere having a diameter of 9.0

A 3.0-cm-diameter sphere is maintained at 1000C and has an emissivity of

A 3.0-cm-diameter sphere is maintained at 1000C and has an emissivity of 0.6. It is enclosed by another sphere having a diameter of 9.0 cm with an emissivity of 0.3 (inside and outside). Both spheres are enclosed in a large room at 30C. Calculate the heat lost from the small sphere.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mechanical Engineering Questions!

The pendulum consists of a slender rod with a mass 1.2 kg and a circular plate with a mass of 4.1 kg. h= 2.5 m and d= 1.4m. h Find the Mass Moment of Inertia about the point O in kg*m. Give your...

A hot steam pipe having an inside surface temperature of 250C has an inside diameter of 8 cm and a wall thickness of 5.5 mm. It is covered with a 9-cm layer of insulation having k = 0.5 W/m C,...

A horizontal tube having a diameter of 30 cm is maintained at a constant temperature of 204oC and exposed to helium at 3 atm and 93oC. Calculate the heat lost from the tube for a tube length of 10.4...

A 3 . 0 - cm diameter sphere is maintained at 9 0 0 C and has an emissivity of 0 . 6 . It is enclosed by another sphere having a diameter of 9 . 0 cm with an emissivity of 0 . 3 on both its inside...

Complete the following Carolina Biological Lab: Kinematics. Please read the Distance Learning Lab Safety Agreement. By taking part in these labs, you agree to the terms in the Distance Learning...

Calculate the rate of free-convection heat loss from a 30-cm-diameter sphere maintained at 90oC and exposed to atmospheric air at 20oC.

The bottom of a steam-producing still of 200-mm diameter is heated by radiation. The heater, maintained at 1000?C and separated 100 mm from the still, has the same diameter as the still bottom. The...

23.26 A circular heater, measuring 20cm in diameter, has its surface temperature maintained at 1000C. The bottom of a tank, having the same diameter, is oriented parallel to the heater with a...

A composite slab is made of 75 mm thick layer of material with thermal conductivity 0.15 W/mK and 0.597 m thick layer of material of thermal conductivity 1.7 W/ mK. The inner surface is maintained at...

GRAD a/d21/ims/quizzing/user/attempt/quiz_start_frame_auto.d21?ou=1003920&isprv=&drc=0&qi=677816&cfql=0&dnb=0&fr... EXAM (Momentum/Impulse/Electric Fields and Forces) Time Left:2:11:32 Ebad Paracha:...

The inventory turnover ratio s of Green Grocer, Peaches and Cream (a clothing boutique), and Exotic Cars Ltd. are 18.4, 5.5, and 2.4, respectively. Required: a. How is the inventory turnover ratio...

2) Let V=R (the set of all ordered pairs) over R such that c(x, x) = (cx,0) Show that V is not a vector space?

Michael, a manager at Navaro Nonprofit Group, is known for his selflessness and willingness to give to others. He transcends his self - interest to serve others, the organization, and society. He...

(a) Is vector addition associative? That is, does (A-bar + B-bar) + C-bar = A-bar + (B-bar + C-bar)? (b) Justify your answer graphically.

(a) Is there a Doppler effect if a sound source and an observer are moving with the same velocity? (b) What would be the effect if a moving source accelerated toward a stationary observer?

(a) In power reactors, using water as a moderator (neutron slower) works well, because the proton and neutron have nearly the same mass. Explain why this is true. (b) From your reasoning in part (a),...

(a) In May 2008, the United States successfully landed a spacecraft named Phoenix near the northern polar regions of Mars. Immediately upon landing, the craft sent a message indicating that all had...

(a) In how many different ways can three 4.0- resistors, be wired: (1) three, (2) five, or (3) seven? (b) Sketch the different ways you found in part (a) and determine the equivalent resistance for...

What is the arithmetic mean of 13%,-10%,19%,8%,-13%, and 14%? Answer in YY.XX% format without the percentage sign, so YY.XX.

Calculate the overall heat transfer coefficient and the rate of heat flow from the hot gasses to the cold air in the cross flow tube-bank of heat exchanger shown in the accompanying illustration for...

A spherical communications satellite 2 m in diameter is placed in orbit around the earth. The satellite generates 1000 W of internal power from a small nuclear generator. If the surface of the...

A small oven with a surface area of 3 ft2 is located in a room in which the walls and the air are at a temperature of 80?F. The exterior surface of the oven is at 300?F and the net heat transfer by...

Here are some summary statistics to go with the histogram of the ZIP codes of 500 customers from the Holes-R-Us Internet Jewelry Salon that we saw in Exercise 55: Count 500 Mean . 64,970.0 StdDev .....

The following data give the number of hurricanes classified as major hurricanes in the Atlantic Ocean each year from 1944 through 2013, as reported by NOAA (www.nhc.noaa.gov): 3, 3, 1, 2, 4, 3, 8, 5,...

Two researchers measured the pH (a scale on which a value of 7 is neutral and values below 7 are acidic) of water collected from rain and snow over a 6-month period in Allegheny County, Pennsylvania....