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
The phosphorus cycle is important to ecosystems. Choose all of these statements that are true concerning the phosphorus cycle.
Lesechka [4]

Answer:

The largest reservoir of phosphorous is sedimentary rock.

Major sources of phosphorous to aquatic ecosystems are fertilizer runoff, sewage leaks, and industrial wastes.

Eccess phosphorous can lead to eutrophication

Explanation:

Phosphorus come from different sources such as aquatic ecosystems and fertilizers used for plants. When these substances containing phosphorus and those from industrial wastes find their way into water bodies, they tend to cause eutrophication, which is the natural enrichment of water bodies.  

Also, it is known that a very small portion of phosphoric acid contribute to acid rain in the atmosphere.  

7 0
3 years ago
Read 2 more answers
Which of these chemical equations demonstrates the law of conservation of mass as it applies to the combustion of ethane? A. 2 C
WINSTONCH [101]

A. 2 C₂ H₆ + 7 O₂ → 4 C O₂ + 6 H₂ O


according to law of conservation of mass , the total mass of reactants side must be same as the total mass of product side. so we need to check if each atom in the equation has same number on both side of the equation or not.

in this equation , we have

4 atoms of carbon left and 4 atoms of carbon on right

12 atoms of hydrogen on left and 12 atoms of hydrogen on right

14 atoms of oxygen on left and 14 atoms of oxygen on right

3 0
3 years ago
Consider the circuit below, which is powered by a 6-v battery. switch s is opened at t = 0 after having been closed for a long t
Semmy [17]
The answer should be B 
3 0
3 years ago
Calculate the change in length of concrete sidewalk (coefficient of linear expansion for concrete is 12*10^-6/celcius) that is 1
anyanavicka [17]

Answer:

The answer to your question is 5.4 cm

Explanation:

This problem refers to calculate the change in length in one dimension due to a change in temperature.

Data

α = 12 x 10⁻⁶

Lo = 150 meters

ΔT = 30 °C

Formula

                    ΔL/Lo = αΔT

solve for ΔL

                    ΔL = αLoΔT

Substitution

                    ΔL = (12 x 10⁻⁶)(150)(30)

Simplification

                    ΔL = 0054 m = 5.4 cm

7 0
3 years ago
A uniform beam of arbitrary, unsymmetrical cross-section and length 2???? is built-in at one end and simply supported in the ver
leonid [27]

Answer:

 the bending moment will be W from either sides

Explanation:

bending moment= force (load) * perpendicular distance, if I understand the question the distance will be 1/2 of the length

=> f x 1/2(l) =W*1/2(2) =W

5 0
3 years ago
Other questions:
  • When all parts of a circuit are composed of conducting materials, the circuit is said to be
    6·1 answer
  • Please help!!! These questions are about specific heat capacity.
    13·1 answer
  • What simple machine makes up most of the joints in your body
    10·1 answer
  • Find the mass of a golfball that accelerates at 18m/s2 when 8.3 N force is applied to it
    6·1 answer
  • How many Joules of energy are required to run a 100W light bulb for one day?
    15·1 answer
  • When is something weightless
    15·1 answer
  • What is wind shear? When wind is moving extremely fast in one direction When wind is moving with a circular motion When two wind
    9·1 answer
  • If a heat engine takes in 4565 kJ and gives up 2955 kJ during one cycle, what is the engine’s efficiency?
    15·1 answer
  • Convert 125 mL to L
    8·2 answers
  • Plains and mountains are examples of formed by processes that shape Earth's surface.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!