This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The weight of a body is the same, no matter where the body is located. What will be an ideal ... (Read 67 times)

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
on: Jul 28, 2018
The weight of a body is the same, no matter where the body is located.
 
  What will be an ideal response?

Question 2

Are solar cell efficiencies of over 30 realizable under realistic use conditions (include cost in these conditions)? Explain.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

stallen

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 28, 2018
Answer to Question 1

Not so. A body's mass is the same regardless of location, but the weight of a
body depends on its location.

Answer to Question 2

This is difficult to give a definitive answer to. In the past, the efficiencies at the
frontiers of research were higher and very expensive. As the frontier advanced, these
efficiencies were available for much more modest costs. At present, 30 efficiency solar
cells are quite expensive. If the trends of the efficiencies and costs up to the present
continues to hold, these solar cells will be much cheaper in the coming decades.


Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 28, 2018
Thank you!


stallen

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

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.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Three Tissue Systems Extend Throughout the Plant Body Three Tissue Systems Extend Throughout the Plant Body
"Dark Matter" "Dark Matter"
Human Body by Children Human Body by Children
Effect of a Black Hole’s Tidal Force on Infalling Matter Effect of a Black Hole’s Tidal Force on Infalling Matter
What are examples of ideal forms? What are examples of ideal forms?
Nutrients in Foods and in the Body Nutrients in Foods and in the Body
Video: Types of disease resistance: innate defenses & immunity

For a complete list of videos, visit our video library