Determine the thermal conductivity of the material

Reference no: EM13282891

A closed box is filled with dry ice at a temperature of -80.4 oC, while the outside temperature is 20.8 oC. The box is cubical, measuring 0.359 m on a side, and the thickness of the walls is 3.91 × 10-2 m. In one day, 3.85 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made.

Reference no: EM13282891

Questions Cloud

Design a system that has as inputs the scalar voltages : Design a system that has as inputs the scalar voltages of lead II and lead III and as output the scalar voltage of the cardiac vector M.

Explain the average atomic mass of lanthanum : Lanthanum has two naturally occuring isotopes. 0.089% of lanthanum atoms are 138La and the rest are 139La. Estimate the average atomic mass of lanthanum, to the nearest tenth of an atomic mass unit.

Design a square wave generator that will provide peak value : Design a square wave generator that will provide a 4kHz square wave with a positive peak vlaue of +10V and negative peak value of -10V. You may use any number of op amps, resistors, and capacitors in this design.

Describe the trend of interest rates : Describe the trend of interest rates over the last 3 years. This may require online research.

Determine the thermal conductivity of the material : A closed box is filled with dry ice at a temperature of -80.4 oC, while the outside temperature is 20.8 oC. Find the thermal conductivity of the material from which the box is made

What is the companys days sales in receivables : A company has net income of $182,000, a profit margin of 7.6 percent, and an accounts receivable balance of $121,370. Assuming 75 percent of sales are on credit, what is the companys days sales in receivables?

Explain the product is a cyclopentyl ether five carbons : The product is a cyclopentyl ether (five carbons with an oxygen). Then attached to a carbon directly adjacent to the oxygen is a methyl bromide group.

Compare the processing speed of the two implementations : (a) Implement a 4-bit ripple carry adder, (b) a 4-bit carrylookahead adder, (c) compare the cost of these twoimplementations, and (d) compare the processing speed of these twoimplementations.

Find the final temperature of the coffee : A thermos contains 159 cm3 of coffee at 93.7 °C. To cool the coffee, you drop two 13.2-g ice cubes into the thermos. What is the final temperature of the coffee

User Account

All Pages