This topic contains a solution. Click here to go to the answer

Author Question: Why is it so difficult to study the center of our galaxy? a. Light from the center is lost in the ... (Read 126 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
Why is it so difficult to study the center of our galaxy?
 
  a. Light from the center is lost in the glow of emission nebulae in this direction.
 b. Interstellar dust blocks almost all light before it reaches Earth.
 c. The exact position of the center is not known.
 d. The center of the galaxy puts out very little radiation and is too dim to study.
 e. The center of the galaxy is too far away for radiation to be detected by telescopes.

Question 2

Newton's law of gravitational force states that ____.
 
  a. an object with no force on acting on it continues at rest or moves in uniform motion in a straight line with constant velocity
  b. an object with no force on it moves in a straight line with constant acceleration
 c. for every action, there is an equal and opposite reaction
 d. the force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them squared
  e. an object with a force on it is accelerated in the direction of the force an amount inversely proportional to its mass and directly proportional to the size of the force



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aprice35067

  • Sr. Member
  • ****
  • Posts: 337
Answer to Question 1

b

Answer to Question 2

d





 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

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.

Did you know?

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

For a complete list of videos, visit our video library