« previous next »

Author Question: Solar energy a. is a recent invention b. has been used for a long time c. has not yet been ... (Read 33 times)

saraeharris

  • Hero Member
  • *****
  • Posts: 546
on: Jul 28, 2018
Solar energy
 a. is a recent invention
  b. has been used for a long time
  c. has not yet been successfully developed
  d. is indirectly the source of most of the energy we use

Question 2

Stepping barefoot off a rug onto a hardwood floor makes your feet feel cold. Why?
 a. The hardwood floor is at a lower temperature than the rug.
  b. The hardwood floor is at a lower temperature than your feet.
  c. The hardwood floor conducts heat away from your feet better than the rug.
  d. all of the above


millet

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 28, 2018
Answer to Question 1

B, D

Answer to Question 2

B, C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

This girl has a long leg cast, which was applied after surgery to correct her clubfoot. This girl has a long leg cast, which was applied after surgery to correct her clubfoot.
Energy pathways Energy pathways
A pleasant smile can go a long way, even through telephone lines. A pleasant smile can go a long way, even through telephone lines.
Solar energy heats the atmosphere, creates seasons, and causes air to circulate Solar energy heats the atmosphere, creates seasons, and causes air to circulate
Recent Climate Change Recent Climate Change
An 82-kg painter stands on a long horizontal board 1.55 m from one end. This 27-kg board is ... An 82-kg painter stands on a long horizontal board 1.55 m from one end. This 27-kg board is ...
Video: Electrical changes in the heart

For a complete list of videos, visit our video library