« previous next »

Author Question: State the First Law of Thermodynamics. What will be an ideal ... (Read 68 times)

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
on: Jul 29, 2018
State the First Law of Thermodynamics.
 
  What will be an ideal response?

Question 2

Marie pushes horizontally on her desk, but not hard enough to get it moving. The friction force acting on the desk is
 
  A) zero.
  B) equal to the weight of the desk.
  C) equal and opposite to her push.
  D) none of the above


mariahkathleeen

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

If U is the internal energy of an object, Q is the heat added to it, and W is the work done by the object, the first law of thermodynamics can be written as follows:
U = Q - W.

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


mariahkathleeen

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

An activation barrier, representing the transition state An activation barrier, representing the transition state
The structural formulas show the state of ionization that would predominate at pH 7.0 The structural formulas show the state of ionization that would predominate at pH 7.0
First Law of Thermodynamics First Law of Thermodynamics
How Urban Is Your State? The Rural-Urban Makeup of the United States How Urban Is Your State? The Rural-Urban Makeup of the United States
Reconstruction Drawing Of The Citadel At Mycenae At Its Most Developed State Reconstruction Drawing Of The Citadel At Mycenae At Its Most Developed State
Conversion of F+ to an Hfr state occurs by integration of the F factor Conversion of F+ to an Hfr state occurs by integration of the F factor
Video: Endocytosis -Types and Phagocytosis

For a complete list of videos, visit our video library