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
Anni [7]
3 years ago
6

Ptolemy's model was __________, with the earth fixed in the center of the universe.

Physics
1 answer:
Zepler [3.9K]3 years ago
4 0
The answer to this question would be Geocentric.

In the earlier day before heliocentric found, many people believe that earth is the core of the galaxy. That means the other planet and the sun are moving around it.  This theory was already proven wrong and the theory is now changed into heliocentric which state the sun is the center of the galaxy.
You might be interested in
What is the density of a piece of quartz with a mass of 30g and a volume of 6cm^3
FromTheMoon [43]

Answer:

\boxed {\boxed {\sf d= 5 \ g/cm^3}}

Explanation:

Density can be found by dividing the mass by the volume.

d=\frac{m}{v}

The mass of the quartz is 30 grams and the volume is 6 cubic centimeters.

m=30 \ g \\v= 6 \ cm^3

Substitute the values into the formula.

d=\frac{30 \ g}{6 \ cm^3}

Divide.

d= 5 \ g/cm^3

The density of this piece of quartz is 5 grams per cubic centimeter.

7 0
3 years ago
An object is dropped onto the moon (gm = 5 ft/s2). How long does it take to fall from an elevation of 250 ft.?
anyanavicka [17]

Answer:

10 seconds

Explanation:

x = x₀ + v₀ t + ½ at²

250 = 0 + (0) t + ½ (5) t²

250 = 2.5 t²

t² = 100

t = 10

It takes 10 seconds to land from a height of 250 ft.

8 0
3 years ago
Read 2 more answers
State and explain newton second law of motion also describe the concept of force, represent it quantiatively and derive the unit
Molodets [167]

Explanation:

Newton's second law of motion states F=ma which means force is equal to mass multiplied by acceleration which in simple terms means If you give mass force it will accelerate the concept of force in physics is any interaction that when unopposed will change the motion of an object.

8 0
3 years ago
If an element an atomic number of 32 and a mass of 72, how many neutrons does it have?
weqwewe [10]

Answer:

41

Explanation:

and your welcome

3 0
3 years ago
Power is measured in units of watts what are watts ?
Varvara68 [4.7K]

Answer:

the watt is the unit of power or radiant flax

3 0
2 years ago
Other questions:
  • What is the earth's primary source of light energy?
    12·2 answers
  • What must be the acceleration of a train in order for it to stop from 12m/s in a distance of 541m?
    13·2 answers
  • Suppose a skydiver (mass = 80kg) is falling toward the Earth. Calculate the skydiver’s gravitational potential energy at a point
    12·2 answers
  • What is the name of the ionic compound Cs2S
    12·2 answers
  • At what angle of projectile range of maximum​
    14·1 answer
  • Define work and power
    14·1 answer
  • A 30 kg wooden box sits on a smooth concrete floor.
    7·1 answer
  • This problem follows up on a discussion from lecture. A wind turbine with an efficiency of 45% for converting wind energy into e
    11·1 answer
  • A virtual image formed by convex lens is always
    5·2 answers
  • 9.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!