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
aev [14]
4 years ago
7

Which scientist was the first to propose the heliocentric model of the universe? A. Aristotle B. Isaac Newton C. Galileo Galilei

D. Nicolaus Copernicus
Physics
2 answers:
Annette [7]4 years ago
6 0

The answer would defiantly be option D "Nicolaus Copernicus." Copernicus was first to purpose the model of the universe, back in 1543 he presented a heliocentric model of the universe, he also made a geocentric model.

Hope this helps!

Nonportrit

ad-work [718]4 years ago
3 0

Answer:

Option (D)

Explanation:

Heliocentric model was discovered by the great scientist <u>Nicolaus Copernicus</u>.

<em>According to the Heliocentrism theory, the sun is believed to be located at the center of our solar system and earth along with other planets revolves around it in a circular path</em>.

There were certain limitation of this theory. This theory was unable to describe why the stars most of the time exist to be at the same place, inspite of the frequently changing positions of earth as it revolves around the sun.

Thus, the correct answer is option (D).

You might be interested in
A parachutist of mass 20.1 kg jumps out of an airplane at a height of 662 m and lands on the ground with a speed of 7.12 m/s. Th
Klio2033 [76]

Answer:

1.30\cdot 10^5 J

Explanation:

The energy lost due to air friction is equal to the mechanical energy lost by the parachutist during the fall.

The initial mechanical energy of the parachutist (at the top) is equal to his gravitational potential energy:

E_i=mgh

where

m = 20.1 kg is his mass

g=9.8 m/s^2 is the acceleration due to gravity

h = 662 m is the initial heigth

The final mechanical energy (at the bottom) is equal to his kinetic energy:

E_f=\frac{1}{2}mv^2

where

v = 7.12 m/s is the final speed of the parachutist

Therefore, the energy lost due to air friction is:

\Delta E=E_i-E_f=mgh-\frac{1}{2}mv^2=(20.1)(9.8)(662)-\frac{1}{2}(20.1)(7.12)^2=1.30\cdot 10^5 J

4 0
4 years ago
Over many years a limestone surface is exposed to slightly acidic rain. Which result is likely to occur in the limestone
kvasek [131]

Answer:

calcium carbonate is transformed into calcium sulfate

Explanation:

Limestone stones are formed by calcium carbonate (Ca Co3), when acid rain falls with a little H2SO2, a chemical reaction of the type

          Ca Co3 + H2SO4 → CO2 + H2O + CaSo4

Calcium sulfate is much weaker than alatium carbonate, which is why the stone tends to break under its weigh

6 0
3 years ago
A rectangular block weighs 240 N. the area of the block in contact with the floor is 20 cm2.calculate the pressure on the floor(
maks197457 [2]

Answer:

12 N/cm²

Explanation:

From the question given above, the following data were obtained:

Weight (W) of block = 240 N

Area (A) = 20 cm²

Pressure (P) =?

Next, we shall determine the force exerted by the block. This can be obtained as follow:

Weight (W) of block = 240 N

Force (F) =.?

Weight and force has the same unit of measurement. Thus, we force applied is equivalent to the weight of the block. Thus,

Force (F) = Weight (W) of block = 240 N

Force (F) = 240 N

Finally, we shall determine the pressure on the floor as follow:

Force (F) = 240 N

Area (A) = 20 cm²

Pressure (P) =?

P = F/A

P = 240 / 20

P = 12 N/cm²

Therefore, the pressure on the floor is 12 N/cm².

7 0
3 years ago
Geologic time is divided into units based upon types of ___. A-sedimentary rocks. B-climate changes. C-organisms. D-igneous rock
olga2289 [7]
C organisms Hope this helps. :)
4 0
4 years ago
Read 2 more answers
A light spring of constant 179 N/m rests vertically on the bottom of a large beaker of water. A 5.32 kg block of wood of density
Digiron [165]

Answer:

Compression of the spring: 0.18 m (downward)

Explanation:

The forces acting on the block of wood are:

- The force of gravity, acting downward, of magnitude mg, where m = 5.32 kg is the mass of the block and g=9.8 m/s^2 is the acceleration due to gravity

- The force exerted by the spring, downward, of magnitude kx, where k=179N/m is the spring constant and x is the elongation of the spring

- The buoyant force, upward, of magnitude \rho V g, where \rho=1000 kg/m^3 is the water density and V the volume of the block

Since the block is in equilibrium, the net force is zero, so we can write

mg+kx-\rho V g=0 (1)

We have to find the volume of the block first. We have:

m = 5.32 kg (mass)

\rho_w = 622 kg/m^3 (wood density)

So, the volume is

V=\frac{m}{\rho_w}=\frac{5.32}{622}=0.0086 m^3

So now we can re-arrange eq.(1) to find the elongation of the spring, x:

x=\frac{-mg+\rho Vg}{k}=\frac{-(5.32)(9.8)+(1000)(0.0086)(9.8)}{179}=0.18 m

So, the spring is compressed by 0.18 m.

7 0
3 years ago
Other questions:
  • Heat transfer from the Sun to the Moon is mostly through the process of *
    13·2 answers
  • A gas has an initial volume of 212 cm3 at a temperature of 293 K and a pressure of 0.98 atm. What is the final pressure of the g
    5·1 answer
  • A swimmer is capable of swimming 0.42 m/s in still water. part a if she aims her body directly across a 66-m-wide river whose cu
    6·1 answer
  • . Water is flowing at 12m/s in a horizontal pipe under a pressure of 600kpa radius 2cm. a. What is the speed of the water on the
    7·1 answer
  • What is NOT a raw minteral used in photosyntheisis
    11·1 answer
  • In order to increase the efficiency of the detection-to-engagement sequence, one can never have too much information from sensor
    14·1 answer
  • What is the resistance of a bulb of 4ow<br>connected in a line of 220v?<br>2​
    10·1 answer
  • The weight of a body of certain mass becomes zero in space.Why?
    11·1 answer
  • When a piece of metal mass of 72.17 g is
    8·1 answer
  • Complete this concept map about types of waves.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!