« previous next »

Author Question: What problem is adaptive optics designed to correct? A) the opacity of the Earth's atmosphere B) ... (Read 51 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jul 27, 2018
What problem is adaptive optics designed to correct?
 
  A) the opacity of the Earth's atmosphere
  B) defects in the optical figuring, such as with the adaptive optics on HST
  C) slight tracking errors in trying to compensate for our unsteady rotation
  D) the effects of atmospheric turbulence
  E) the absorption of ultraviolet by the ozone layer

Question 2

The size and shape of a planet's orbit can be determined by
 
  A) the Doppler technique.
  B) transit observations.
  C) spectral measurements.
  D) knowing the planet's mass by any technique and applying Newton's version of Kepler's third law.
  E) gravitational microlensing.


CAPTAINAMERICA

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Size comparison of Earth and Uranus Size comparison of Earth and Uranus
How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives
Heating of the atmosphere Heating of the atmosphere
Solution to Exponent Law Problem Solution to Exponent Law Problem
The predicted solution to the problem posed The predicted solution to the problem posed
Earth 150 Million Years Ago Earth 150 Million Years Ago
Video: Male Reproductive System - The gonadotropin releasing hormone

For a complete list of videos, visit our video library