Estimate the time when the temperature at geometric centre

Assignment Help Civil Engineering
Reference no: EM13306015

Estimate the time when the temperature at the geometric center of a 6 cm diameter apple held in 2`C water stream reaches 3oC. The initial uniform temperature of the apple is 15`C. The convective heat transfer coefficient in water surrounding the apple is 50 W/m2 `C. The properties of apple are thermal conductivity k = 0.355 W/m`C; specific heat Cp = 3.6 J/kg`C, and density = 820 kg/m3.

Reference no: EM13306015

Questions Cloud

Determine the required length of splice to be lap spliced : number 9 compression bars in a column are to be lap spliced. there is no excess steel, and the bars are enclosed by a spiral of 3/8 inch diameter wire having a pitch of 3 inch.
Ridiculous price : 2 page executive summary for the attached case, answering the questions listed below.Spoke to Mark, and understand that it's $20 per page making this assignment $40 so please do not ask for some ridiculous price.
Determine angular velocity of sprinkler about the bearing : Water enters a two-armed lawn sprinkler along the vertical axis (normal to the page) at a rate of 80 L/s and leaves the sprinkler nozzles as 1.5-cm diameter jets at an angle of from the tangential direction.
Calculate what is the magnetic declination of true bearing : The true bearing of the line a-b is S 88*50' W, the magnetic bearing of the line d-c is N 89*45' E. What is the magnetic declination
Estimate the time when the temperature at geometric centre : Estimate the time when the temperature at the geometric center of a 6 cm diameter apple held in 2`C water stream reaches 3oC. The initial uniform temperature of the apple is 15`C.
Determine temperature when thermal equilibrium is reached : A 50-kg iron block at 80C os dropped into an insulated tank that contains 0.5m^3 of liquid water at 25C. determine the temperature when thermal equilibrium is reached.
Determine the room temperature when the student comes back : A NCSU student turned on his/her 150 W fan inside his/her room, 4m * 6m * 6m, before going to class in the morning of a summer day, excepting to find his/her room cooler when he/she returns at night.
Determine the tensions in the cables and the reactions at a : The force F is acting on the boom ABC at C points in the direction of the unit vector 0.7071i-0.7071j and its magnitude is 10kN. The boom is supported by a ball and socket at A and cables BD and BE.
Find the tension in the cord when the radius is given : The ball is kicked so that it has a velocity of 0.5 m/s and the cord is pulled in at a rate of 0.2 m/s. Neglect friction so that the only important force on the ball is the tension in the cord. Find the tension in the cord when the radius is 0.25 ..

Reviews

Write a Review

Civil Engineering Questions & Answers

  Locate the centroid of the net volume

A body consists of a right circular cone whose base is 12 in. and whose altitude is 16 in. A hole 8 in. in diameter and 4 in. deep has been drilled from the base. The axis of the hole coincides with the axis of the cone. Locate the centroid of the..

  What ethical problems might these conflicts create

What ethical problems might these conflicts create? How are these two different ethical codes tied to public perceptions of the role of law enforcement?

  Determine the downstream water level to produce the flowrate

The flow through an 8 ft. Parshall Flume is 129 cfs when Ha is 2.50 ft. Determine the downstream water level (Hb) that would produce this flowrate.

  Concentration of moles in the tank solution

HOCL is added to water in a tank as a disinfectant. After equilibrium is reached it is found that the pH of the water in the tank is 8.2 and the gas phase partial pressure is the head space of the tank is 0.2E-7 atm.

  Calculate the height above the waterline

A fully loaded, ocean going container ship is just stable about its longitudinal axis (roll). The ship has a total weight of 155,000 tons, length = 1,600 feet and a beam = 150 feet (assume that it is the shape of a rectangular box). Calculate the ..

  Strength of a semicrystalline polymer

Briefly explain how each of the following influences the tensile or yield strength of a semicrystalline polymer and why: (a) Molecular weight (b) Degree of crystallinity (c) Deformation by drawing (d) Annealing of an undeformed material

  Determine the load p if the total elongation of the system

A 0.25 in diameter copper rod BC is securely attached between two identical 1 in diameter steel rods (AB and CD). Find the load P if the total elongation of the system is measured to be 0.0312 in. Esteel= 29,000ksi, Ecopper=17,000ksi.

  Determine the allowable load p for the safety factor

a plane truss is subjected to a loads 2P and P at joints B and C, respectively, as shown in figure part a.The truss bars are made of two L102 x 76 x 6.4 stell angles having an ultimate stress tension equal to 390 MPa (cross-sectional are of the tw..

  How can utah and other parts of the country

how can Utah and other parts of the country have the same temperature but a different humidity?

  Determine what will go into freezing the ice

You try to freeze one liter of water at 10 degrees Celsius in ice trays in your freezer. Your freezer has a coefficient of performance of 5.5 and a power rating of 550 Watts, though only 10% of the power will go into freezing the ice.

  Determine the mass ratio

Determine the mass ratio, For a vehicle in gravitationless space, determine the mass ratio necessary to boost the vehicle velocity by 1600 m/sec

  Derive an equation for the undrained shear strength of clay

if a clay slope at a construction site fails derive an equation for the undrained shear strength of the clay given that the shear reistance along L of the slope can be given as: (SuH0)/ sin beta

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