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
Anon25 [30]
3 years ago
14

Perhaps the greatest of the Greek astronomers, Hipparchus compiled the first catalog of stars, 49) accurately measured their pos

itions, and defined the basic system of stellar brightnesses which we now call the magnitude system. A particular star in his catalogue has an apparent magnitude of 4 and an absolute -12. Determine the distance to the star.
Physics
1 answer:
Sergio039 [100]3 years ago
7 0

Answer:

Explanation:

it would be 3 because ju divide 12 by 4

You might be interested in
Object A has a mass of 100 grams. Object B has a mass of 150 grams. They are both traveling at the same velocity. What can you c
Scilla [17]
-- Momentum is (mass) x (speed). 
Object B has 1.5 times as much momentum as Object A has.

-- Kinetic energy is (1/2) x (mass) x (speed) . 
Object B has 1.5 times as much kinetic energy as Object A has.

-- If they would both stop long enough to get on the scale,
Object B would weigh 1.5 times as much as Object A does.
8 0
3 years ago
Antimony is like a nonmetal in that it is a brittle, crystalline solid, has poor electrical and heat conductivity, and has a low
Reil [10]

Answer is B. It is a metalloid.

Metalloid is a chemical element that has characteristics of both metals and non- metals.

Antimony is brittle,is a poor conductor of heat and electricity,has a low boiling point and is a crystalline solid. These are some of the characteristics which a non-mechanical has.

It can also be classified as a metal due to its ability to form alloys easily and due to it's shiny silver appearance.Antimony alloys are used in batteries.


8 0
4 years ago
How much energy is stored in the electric field of a 50-μm-diameter cell with a 7.0-nm-thick cell wall whose dielectric constant
Anastaziya [24]
:<span>  </span><span>Under the assumption that a cell is made up of two concentric spheres you find the surface are of the inside sphere which will be your A. 

You already have your separation and dielectric constant so just use the formula you stated towards the end of your question and you get 8.93x10^-11 Farads which is about 89pF</span>
3 0
3 years ago
Read 2 more answers
Two identical soccer balls are rolled towards each other. What will be true after they collide head-on
tresset_1 [31]
They will go away from each other
8 0
4 years ago
Read 2 more answers
In a periodic table a set of properties repeats from?
bogdanovich [222]

Answer;

Row to row

In a periodic table a set of properties repeats from row to row

Explanation;

In a periodic table, a set of properties repeats from row to row. This is called the periodic law. In the periodic table, the rows are called periods and the columns are called groups.

The modern periodic table is organized by increasing atomic number. The atomic mass unit is based on 1/12th the mass of a carbon-12 atom.  

The atomic mass of an element is the weighted average of the masses of an element’s isotopes.

8 0
3 years ago
Read 2 more answers
Other questions:
  • According to Newton's 3rd law of motion, an action creates _____.
    12·2 answers
  • An object at free fall near the Earth’s surface experiences constant velocity.
    14·1 answer
  • A good confirmatory test for free halogen is: Select one: a. their volatility b. their odor c. their color in water solution d.
    12·1 answer
  • 7. For a constant force, suppose the duration of
    15·1 answer
  • Have a pH between 0-7.
    6·2 answers
  • Calculate the change in momentum of a 45 kg runner who starts out at 1 m/s and speeds up to 3 m/s. Which anser choice is correct
    13·1 answer
  • A photoelectric-effect experiment finds a stopping potentialof 1.93V when light of 200nm is used to illuminate thecathode.
    8·1 answer
  • If two scooters are moving at the same speed but in opposite directions is their velocity the same? Explain
    11·2 answers
  • A mother and daughter are playing catch, as seen in the image below. At which point
    13·1 answer
  • Selective breeding has been used to create plants that are more resistant to disease. Of what is this an example? A an organism
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!