Determine the temperature in the room

Assignment Help Civil Engineering
Reference no: EM131031422

A student living in a 4-m × 6-m × 6-m dormitory room turns on her 150-W fan before she leaves the room on a summer day, hoping that the room will be cooler when she comes back in the evening. Assuming all the doors and windows are tightly closed and disregarding any heat transfer through the walls and the windows, determine the temperature in the room when she comes back 10 h later. Use specific heat values at room temperature, and assume the room to be at 100 kPa and 15°C in the morning when she leaves.

2494_672857c5-dd49-4876-aab0-a02d6f221a43.png

Reference no: EM131031422

Questions Cloud

Identify the location of firms and households : Identify the location of firms and households. List and explain the three major problems in using the CPI as a measure of the cost of living
What is the value of patricks stock : Patrick Company expects to generate free-cash of $120,000 per year forever. If the firm's required return is 12 percent, the market value of debt is $300,000, the market value of preferred stock is $70,000, and the company has 100,000 shares of stock..
Why domestic markets benefit from protectionist trade policy : Why would domestic markets benefit from protectionist trade policies? Do you believe tariffs or nontariff barriers can be more effective in restricting trade? Discuss which types of restrictions would be most beneficial to industries.
What compromise on the floor of philadelphia convention : What compromise on the floor of Philadelphia convention created a bicameral Congress? a.Connecticut b. New Jersey c. Virginia
Determine the temperature in the room : Use specific heat values at room temperature, and assume the room to be at 100 kPa and 15°C in the morning when she leaves.
Which of the following internal control procedures : Which of the following internal control procedures would minimize the misuse of corporate credit cards?a) Establishing a restrictive policy regarding the issuance of the cards.b) Reviewing the continued need for each card periodically.c) Reconciling ..
Units of measure used to express chemical : A. Unit conversions  1. Units of measure used to express chemical or radiation levels in the natural environment: Units Place in correct descending order according to mass (highest to lowest): Gram Femtogram Microgram Milligram Picogram Kilogram Nano..
Patrick company expects to generate free cash : Patrick Company expects to generate free-cash of $120,000 per year forever. If the firm's required return is 12 percent, the market value of debt is $300,000, the market value of preferred stock is $70,000, and the company has 100,000 shares of stock..
Discuss factors that could possibly influence growth rate : Discuss factors that could possibly influence the growth rate of your city and state. Do you live in a city or state that is experiencing growth? Is it possible that you live in a city or state where the population is on the decline or hasn't changed..

Reviews

Write a Review

 

Civil Engineering Questions & Answers

  An equal tangent vertical curve is to be constructed

an equal tangent vertical curve is to be constructed between grades of -2.0 initial and 1.0 final .the pvi is at

  A solution containing excess sodium hydroxide

Suppose 33mL of 1.20 M HCl is added to 42ML of a solution containing excess sodium hydroxide in a coffee-cup calorimeter. The solution temperature, originally at 25.0 degrees C, rises to 31.8 degrees C.

  What moment must be applied to the stationary disk to cause

The stationary disk, of 300 mm radius, is attached to a pin support at D. The disk is held in place by the brake ABC in contact with the disk at C. The hydraulic actuator BE exerts a horizontal 400 N force on the brake at B.

  How long will it take for the concentration to be one-quarte

A batch system is assumed to be first order. The initial concentration is 225 mg/L. If the reaction rate constant is 0.65 hr^-1, how long will it take for the concentration to be one-quarter the starting concentration?

  Calculate the height of water in the standpipe after 4 hours

A falling-head permeability test is being conducted on a saturated sample of clayey silt having hydraulic conductivity of 6.5 x 10-9 m/s. The diameter and the length of the sample are 100 mm and 150 mm.

  Determine the rate of heat transfer to the pan

Water is boiled at 1 atm pressure in a 25-cm-internaldiameter stainless steel pan on an electric range.

  Estimate hydraulic conductivity of the soil with porosity

A constant-head test was conducted on a sample of soil 15cm long and 60 cm^2 in cross-sectional area. The quantiities of water collected was 50 cm^3 in 20 seconds undera a head difference of 24 cm.

  Determine the horizontal force p that must be applied

The wedge is used to level the member. Determine thehorizontal force P that must be applied to move the wedge to theright. The coefficient of static friction between the wedgeand the two surfaces of contact is

  What is the concentration of bod in the jackson river before

The James Rives flows in from the East at 320 m^3/min and joins the Jackson River flowing at 605 m^3/min just outside the town of Charlotte, NC. The concentration of BOD in the James River is 14 mg/L

  Freehand sketches used to determine room locations

Freehand sketches used to determine room locations, flow of traffic, and spatial relationships

  Determine the exit temperature through a tube at a rate

Water flows through a tube at a rate of 7.5 kg/min while heat is added to it at a rate of 4.5 kW. If water entered at 20 degrees celcius, determine the exit temperature. Assume the pressure remains constant at 1 atm throughout.

  Two crews are to start at opposite ends of a mountain

A standard five-day BOD test is run using a mix consisting of fourparts distilled water and one part wastewater (no seed). Theinitial DO of the mix is 9.0 mg/L, and the DO after five days isdetermined to be 1.0 mg/L. What is BOD5 ?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd