1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pavlova-9 [17]
3 years ago
12

Astronomical observatories have been available since ancient times, and many cultures set aside special sites for astronomical o

bservations. The thing modern observatories have that was missing from these older observatories until about 1610 was __________________. Group of answer choices
Physics
1 answer:
Vlada [557]3 years ago
8 0

Answer:

The answer is "telescopes".

Explanation:

Throughout ancient times, astronomical observatories have indeed been available, and so many historical locations were reserved for astronomical observations. All contemporary astronomers lacked within those older telescopes were lenses until 1610. A telescope is indeed an instrument used to view far-off objects. Telescopes often are being used to look at planets and stars.

You might be interested in
What is happening to the ATOMS INSIDE of a magnet that gives the
Sliva [168]

Answer:

The atoms are aligned in a particular direction

Explanation:

The atoms become aligned in a particular direction in regions called domains, thus resulting in an overall resultant magnetism due to the spin of the electrons.

7 0
3 years ago
Where was the novel from the word quark was taken
victus00 [196]
The word quark  <span>originally appeared in a single line of the the novel Finnegans Wake written by the Irish author </span>James Joyce<span> (1882–1941). The protagonist of the book is a publican named Humphrey Chimpden Earwicker who dreams that he is serving beer to a drunken seagull</span>
4 0
3 years ago
how many revolutions are completed by a top spinning with a constant angular velocity of 3pi radians during a 20 sec time interv
patriot [66]

Answer:

  30

Explanation:

Assuming the velocity is 3π radians <em>per second</em>, the top will spin through an angle of ...

  (3π radians/s)(20 s) = 60π radians

Since each revolution is 2π radians, that is ...

  (60π radians)/(2π radians/revolution) = 30 revolutions

7 0
3 years ago
What is the atomic number of an element whose atoms each 47 protons,60 neutrons, and 47eletrons
Lorico [155]
What is the atomic number of an element whose atoms each 47 protons, 60 neutrons, and 47 electrons?

The correct answer is number 47 or Ag (Silver).

Hope I Helped!
5 0
3 years ago
A mover hoists a 200 kg piano from the ground to a height of 10 m using a single pulley. What was the change in the pianos energ
RideAnS [48]
P.E= Mass x gravity x height   (standard gravity = 10m/s approaximately)
     = 200x10x10= 20000j (D)
7 0
3 years ago
Read 2 more answers
Other questions:
  • Why are there two fluoride ions in magnesium fluoride but only one fluoride ion in lithium fluoride
    13·2 answers
  • Jupiter is composed almost entirely of gases and liquids, mostly
    6·2 answers
  • A rectangular billboard 5 feet in height stands in a field so that its bottom is 6 feet above the ground. A nearsighted cow with
    5·2 answers
  • A balloon is filled with water. The balloon is heated and begins to expand. The water inside begins to turn into steam. What wil
    12·2 answers
  • What is the basic equation that defines velocity?
    5·1 answer
  • A has the magnitude 14.4 m and is angled 51.6° counterclockwise from the positive direction of the x axis of an xy coordinate sy
    6·1 answer
  • Arocket launches at an angle of 33.6 degrees from the horizontal at a
    7·1 answer
  • An enconomy car has a mass of 800 kg. What is the weight of the car?
    11·2 answers
  • new york, Vermont, Massachusetts are specifically what region of the united states? and what two wind directions do you combine?
    14·1 answer
  • If an 800.0 Kg sports car slows to 8.0 m/s in the forward direction to check out an accident scene and a 1200.0 kg pick-up truck
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!