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

Author Question: The magnetic force between parallel wires is used by the National Bureau of Standards to define the ... (Read 24 times)

809779

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
The magnetic force between parallel wires is used by the National Bureau of Standards to define the
 
  A) Newton.
  B) Tesla.
  C) square-meter.
  D) Ampere.
  E) Coulomb.

Question 2

Why do large aperture telescopes use a mirror instead of a lens to focus light?
 
  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

dominiqueenicolee

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

Large mirrors are much cheaper than lenses (the largest lens has a 1 m diameter) and mirrors have an added advantage of no chromatic aberration.


809779

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
:D TYSM

miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

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?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Elk at the Opal terrace at Mammoth Hot Springs, Yellowstone National Park Elk at the Opal terrace at Mammoth Hot Springs, Yellowstone National Park
Adult, Child, and Infant CPR Standards Cont Adult, Child, and Infant CPR Standards Cont
Video: Regulation of GFR: three methods, autoregulation & autoregulation via myogenic mechanism

For a complete list of videos, visit our video library