Author Question: In order to cool a cup of hot tea, someone adds some cold milk and then waits 5 minutes. Would the ... (Read 40 times)

kshipps

  • Hero Member
  • *****
  • Posts: 571
In order to cool a cup of hot tea, someone adds some cold milk and then waits 5 minutes. Would the tea have been cooler at the end of the 5-minute period if the person first waited 5 minutes and then added the cold milk? Assume that the temperature of the milk is the same whenever it is to be added.
  1.No, the tea would be cooler after 5 minutes if the cold milk were added as soon as possible.
  2.Yes, the tea would be cooler after 5 minutes if the cold milk were added at the end of the 5-minute period.
  3.The final temperature of the tea would be the same in either case.
  4.The one that would be cooler depends on the actual temperatures and amounts of the tea and the milk.

Question 2

Which curve would have the smallest slope? Assume no phase changes take place.
  1.the temperature of water versus added energy
  2.the temperature of ice versus added energy
  3.the temperature of steam versus added energy
  4.They would all have the same slope.



aidanmbrowne

  • Sr. Member
  • ****
  • Posts: 305
Answer to Question 1

2

Answer to Question 2

1



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

For a complete list of videos, visit our video library