Why do thermoplastics tend to brittle in very cold weather

Assignment Help Mechanical Engineering
Reference no: EM13212309

1. Why can you recycle polyethylene, but now a fiberglass sheet(glass fiber reinforced epoxy composite?

2. Why do thermoplastics tend to become brittle in very cold weather?

 

Reference no: EM13212309

Questions Cloud

State what affect will adding more so3 have on the system : Consider the following reaction at equilibrium. What affect will adding more SO3 have on the system?
Calculate the power output in kw : Air enters a turbine at 40 kN/m2, 900 C, and leaves at 10 kN/m2. The flow is reversible and adiabatic. Inlet velocity is quite low and outlet velocity is 150 m/s through a cross-sectional area of 0.20 m2. Calculate the power output in kW.
Plot the moment about b : Plot the moment about B for 320mm
State the equation for an electrochemical cell reaction : Predict the immediate effect of the following changes on the observed cell voltage E.Increased E,Decreased E,No change E.
Why do thermoplastics tend to brittle in very cold weather : Why do thermoplastics tend to become brittle in very cold weather?
What determines a nations real aggregate income : what determines a nation's real aggregate income According to the classical model of income determination, what determines a nation's real aggregate income What accounts for the difference between the two models
Estimate the average temperature the wall will attain : Assuming that the air is 80°F and 1 atm and blows across the wall as on a flat plate, estimate the average temperature the wall will attain for equilibrium conditions.
The heart of the circuits that form the basis for computers : Semiconductors, such as silicon, are the heart of the circuits that form the basis for computers and other electronics. These materials are characterized by a gap in the energy
What are effects of the annealing process on the density : What are effects of the annealing process on the density of these dislocations ? Can you give examples for materials?

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Irrigation system

Irrigation system

  Determine the slenderness ratio

determine the slenderness ratio of a 5 m column with built end if its cross section is a circular with a radius of 40 mm and b 50 mm square use the concept of effective length.

  Degrees farenheit is allowed to cool at a constant volume

Superheated water vapour at 180 psia and 500 degrees Farenheit is allowed to cool at a constant volume until the temperature drops to 250 degrees Farenheit. At the final state, determine

  Determine the temperature at which the liquid

A rigid tank with a volum of 2.5m^3 contains 5kg of saturated liquid-vapor mixture of water at 75deg C. Now the water is slowly heated. Determine the temperature at which the liquid in the tank is completely vaporized

  Determine the velocity of the collars a and b

the motion of the slender 10kg rod AB is guided by collars of negligible mass that slide freely on the vertical and horizontal rods. knowing that the bar is released from rest when θ=30, determine the velocity of the collars A and B when θ = 60.

  Bubble dynamics underneath a downward facing anode

Bubble dynamics underneath a downward facing anode in Hall-Heroult cell. Experimental using Hall-heroult process.Analysis by using High Speed Camera and ANSYS Model.

  Explain coefficient reaction

Coefficient Reaction, The removal efficiency of a reactor tank is 73-percent and its residence time is 28.5s

  State what the joints are in the system

State what the joints are in the system and knowledge of computational kinematics explain what you believe is the procedure to calculate each variable.

  Compute reactions of a simply supported continuous beam

Calculate reactions of a simply supported continuous beam. A beam is simply supported at the ends and is continuous over two spans.

  Determine the required thickness of the insulation

If the pipe is to be insulated with glass wool insulation (k=.05 W/m C) in order to decrease the temperature rise of water to .25 degrees C, determine the required thickness of the insulation.

  Explain complex loading bending and compression

Complex loading (bending and compression), A steel chimney is 28m high, 1.4m external diameter, and 20mm thick. It is rigidly fixed at the base and is acted upon by a horizontal wind pressure of intensity 1.

  What is discharge revised discharge pressure of compressor

What is the discharge revised discharge pressure (guage pressure) of the compressor ?  Is the assumption of change in temperature valid for calculating the discharge pressure of the compressor ?

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