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

Author Question: During the eighteenth and nineteenth centuries, attempts to precisely measure the astronomical unit ... (Read 90 times)

serike

  • Hero Member
  • *****
  • Posts: 542
on: Jul 27, 2018
During the eighteenth and nineteenth centuries, attempts to precisely measure the astronomical unit relied largely on rare
 
  A) total solar eclipses.
  B) transits of the inferior planets across the Sun.
  C) passages of comets close to the Earth.
  D) maximum elongations of Venus.
  E) oppositions of Mars.

Question 2

Most interstellar clouds remain stable in size because the force of gravity is opposed by ________ within the cloud.
 
  A) degeneracy pressure
  B) radiation pressure
  C) stellar winds
  D) thermal pressure


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

D


serike

  • Hero Member
  • *****
  • Posts: 542
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

The basic unit of life - cell The basic unit of life - cell
A functional renal unit. A functional renal unit.
Using the voltmeter leads from a starting and charging test unit to measure the voltage drop ... Using the voltmeter leads from a starting and charging test unit to measure the voltage drop ...
A mini clamp-on digital multimeter can be used to measure alternator output and unwanted AC current ... A mini clamp-on digital multimeter can be used to measure alternator output and unwanted AC current ...
A typical electric motor-driven AIR pump. This unit is on a Chevrolet Corvette and only works when ... A typical electric motor-driven AIR pump. This unit is on a Chevrolet Corvette and only works when ...
If P(θ) = (√3 /2, -1/ 2), determine the coordinates of P (θ + 90 °) using the unit circle If P(θ) = (√3 /2, -1/ 2), determine the coordinates of P (θ + 90 °) using the unit circle
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library