« 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 39 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?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Adenosine triphosphate (ATP) provides energy Adenosine triphosphate (ATP) provides energy
Running time on 100-meter sprint for men and women master athletes increases with age. Source: Korho Running time on 100-meter sprint for men and women master athletes increases with age. Source: Korho
The first published illustration of a camera obscura observing a solar eclipse. The first published illustration of a camera obscura observing a solar eclipse.
Recent history of biochemistry shown by the introduction of new techniques. (part 1) Recent history of biochemistry shown by the introduction of new techniques. (part 1)
Solving Energy Problem Solving Energy Problem
Time homework Time homework
Video: Factors that influence muscle tension - Sarcomere length and force, understretched and overstretched

For a complete list of videos, visit our video library