User Account

All Pages

It also absorbed more water than the original control

Assignment Help Physics
Reference no: EM13964554

In our ChemE lab, we were asked to place a 25 cm x 25 cm x 1 cm (thick) block of wood in a water bath.....the rate of water absorption into the wood block is known to be 8 grams/100 cm^2 at 20 degrees C --- and the wood block is assumed to be at normalized ambient temp as well and completely dry or free of moisture before entering the water bath.

Now...when we change the temperature of the water bath from 20 degrees C to 30 degrees C, the rate of water absorption changed and the wood absorbed more water in the same unit time. Why??? Help me understand?

Second....When we pre-conditioned the block of wood and raised its temp to 30 degrees C before placing it in the 20 degree C water bath, it also absorbed more water than the original control....again why???

Reference no: EM13964554

Questions Cloud

Distinguish between reversible and irreversible processes : Given that A is independent of r, show that in steady state the heat transported away from the hot end is proportional to r^(3/2).
Find a formula for the harmonic frequencies : Find a formula for the harmonic frequencies (fn) for a pipe open at only one end based on v=f*lamda and the formula we got for the harmonic wavelengths and For a pipe of length 0.40m, find the first five harmonic wavelengths and frequencies.
Determine angular frequency and wave vector : Explain what is meant by resonance, or driving the system at resonance. Give an example of a system that has only one natural frequency and a system that has an infinite number of natural frequencies.
Impair an organizations information security : Compare and contrast a minimum of five potential threats and evaluate how these threats may impair an organization's information security.
It also absorbed more water than the original control : Now...when we change the temperature of the water bath from 20 degrees C to 30 degrees C, the rate of water absorption changed and the wood absorbed more water in the same unit time. Why??? Help me understand?
Calculate the increase or decrease in net operating income : The marketing manager argues that a $8,700 increase in the monthly advertising budget would increase monthly sales by $18,500. Calculate the increase or decrease in net operating income.
Calculate the heat added during the process : The heat addition process of a Carnot heat engine utilizing a piston-cylinder mechanism is executed by vaporizing saturated liquid R134a at 100 [kPa] to saturated vapor.
What is the estimated current production rate : Write the equation of the TR Curve and then plot the TR curve - Comment on the shape of the TR curve and what is the estimated current production rate
Produce more energy than the energy in the fuel to run motor : Use the second law of thermodynamics to explain why many poor people in developing countries live on a mostly vegetarian diet?

Reviews

Write a Review

Physics Questions & Answers

  Find the net change in the internal energy of gas in piston

An ideal gas in a piston is placed in a refrigerator, which removes 686 J of energy from the gas via cooling. find the net change in the internal energy of the gas in the piston

  Obtain how much energy is transferred into gas bt heat

An ideal gas in a cylinder is compressed adiabatically to one half its original volumes. Obtain how much energy is transferred into or out of the gas by heat in this process

  Determine the magnitude of the normal force

A small block with mass 0.706 kg is sliding down a frictionless ramp that is inclined at an angle of 53.1° above the horizontal. Assume g = 9.80 m/s2. what is the magnitude of the normal force that the surface of the incline exerts on the block

  How long will it take her

A swimmer is capable of swimming 0.50m/s in still water. At what upstream angle must the swimmer aim, How long will it take her

  What fraction of yellow fish initial kinetic energy was lost

Big yellow fishing swimming at 2.0m/s swallows little green fish at rest. Big yellow fish is 3 times as massive as little green fish. What fraction of big yellow fish's initial kinetic energy was lost

  Determine what was the activity at t with a pure sr-90

Starting with a pure Sr-90 sample at time t=0, a researcher finds that the Y-90 activity is 22.9 mCi at t = 1 day. What was the activity at t = 0

  Find the weight of the cube in air

A cube floats in water. The length of each side is 8 cm. The cube is 3/4 submerged. find the weight of the cube in air

  Very large non conducting plate lying in the xy-plane

A very large non conducting plate lying in the xy-plane carries a charge per unit areaof 6σ. A second such plate located at z = 5.00 cm and oriented parallel to the xy-plane carries a charge per unit areaof -3σ. Find the electric field for the fol..

  Compute the image distance of the truck

The outside mirror on the passenger side of a car is convex and has a focal length of -5.4 m. Find the image distance of the truck

  Find how far does the tongue reach

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. how far does the tongue reach

  What will be the maximum height of the tree

Assume that the water pressure at the bottom of a tree is -0.1 MPa and that the water pressure at the top of the tree is -1.5 MPa. What will be the maximum height of the tree

  Calculate the outer radius of the hollow tube

A cylindrical capacitor consists of a solid inner conducting core with radius 0.200cm , surrounded by an outer hollow conducting tube. Calculate the outer radius of the hollow tube

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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