« previous next »

Author Question: Which of the following statements about biodegradable polymers is true? A) They will degrade ... (Read 29 times)

sam.t96

  • Hero Member
  • *****
  • Posts: 570
on: Aug 27, 2018
Which of the following statements about biodegradable polymers is true?
 
  A) They will degrade quickly in a landfill.
  B) Thermosetting polymers are biodegradable, but thermoplastics are not.
  C) They often require specific temperatures or the presence of microorganisms in order to undergo degradation.
  D) Polyvinyl chloride is a biodegradable polymer.

Question 2

The fact that a heat pump requires energy to move heat from a colder object (the outside of a house) to a hotter object (the inside of the house) is a real life observation of which thermodynamic law?
 
  A) the first law
  B) the second law
  C) the third law
  D) the fourth law


BUTTHOL369

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

True Forget-Me-Not True Forget-Me-Not
True Friendship True Friendship
Adapoids and omomyoids had longer snouts and are the first “true” primates. Adapoids and omomyoids had longer snouts and are the first “true” primates.
How to convert verbal statements into algebraic equations (Part 3) How to convert verbal statements into algebraic equations (Part 3)
How to convert verbal statements into algebraic equations (Part 4) How to convert verbal statements into algebraic equations (Part 4)
True Dover Sole True Dover Sole
Video: The Vestibular System

For a complete list of videos, visit our video library