Author Question: In order to cool a cup of hot tea, someone adds some cold milk and then waits 5 minutes. Would the ... (Read 32 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?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

For a complete list of videos, visit our video library