Author Question: State the First Law of Thermodynamics. What will be an ideal ... (Read 56 times)

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
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
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
Both answers were spot on, thank you once again



mariahkathleeen

  • Sr. Member
  • ****
  • Posts: 337
Great! Please up vote :D



 

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

For a complete list of videos, visit our video library