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
Rainbow [258]
3 years ago
9

Who was the first to state the concept of an atom?

Physics
2 answers:
LenaWriter [7]3 years ago
4 0
Democritus was the first to state the concept of an atom; he proposed that matter is made up of tiny, indivisible particles called atoms
Naddik [55]3 years ago
3 0

Answer:

Democritus

Explanation:

Greek philosophers Leucippus and Democritus first developed the concept of the atom in the 5th century BC

You might be interested in
Sophia was studying with Maalik about the layers of the Earth. They were given several different statements about the layers. Wh
Svetach [21]

Answer:

Explanation:

I would say C

6 0
2 years ago
Read 2 more answers
A 100 kg marble slab falls off a skyscraper and falls 200 m to the ground without hitting anyone. Its fall stops within millisec
Radda [10]

Answer:

Δ T = 2.28°C

Explanation:

given,

mass of marble = 100 Kg

height of fall = 200 m

acceleration due to gravity = 9.8 m/s²

C_marble = 860 J/(kg °C)

using conservation of energy

Potential energy = heat energy

  m g h = m C_{marble}\Delta T

  g h =C_{marble}\Delta T

  \Delta T= \dfrac{g h}{C_{marble}}

  \Delta T= \dfrac{9.8 \times 200}{860}

        Δ T = 2.28°C

7 0
3 years ago
Why do high-altitude clouds tend to appear before a warm front arrives in a region?
Ilia_Sergeevich [38]

Answer:

Global Warming

Explanation:

That's why

8 0
2 years ago
Read 2 more answers
Which statement is incorrect when considering gases? 1. Gas molecules are in constant, random motion at room temperature 2. The
vova2212 [387]

Answer:

4

Explanation:

For gases :

1. The motion of gases molecule is in random manner at the room temperature.

2.The distance between the gas molecule is more and that is why gas can be compress.

3.The attraction force between the gas molecule is negligible or we can say that there is no any force between the gas molecules.that is why gas can be filled in the container.But the motion of the gas molecule does not stop they are still moving inside the container but the space for movement become less.When a gas container heated then the container start to vibrate because the movement of the gas molecule.

So the option 4 is incorrect.

6 0
3 years ago
Calculate the molarity of a 10. 0% cacl₂ solution. The density of the solution is 1. 0835 g/cm³.
brilliants [131]

The molarity of 10% CaCl2 is 0.9%

concentration of the given salt CaCl₂ = 10%

Density of a solution = 1.0835 g/cm³

Volume = m / d

= 100 / 1.0835

= 92.29 litres

Density = mass / volume

1.0835 × 92.29 = mass

mass = 99.99 gram

Thus the molarity can be calculated by = moles of solute / volume of solution multiplied by 100

= 0.9008/ 92.29 X 100 %

= 0.009 X 100 %

= 0.9 %

The molarity of 10% CaCl2 is 0.9%

To know more about density and molarity you may visit the link which is mentioned below:

brainly.com/question/10710093

#SPJ4

5 0
1 year ago
Other questions:
  • How much energy is used by a 900 w microwave that operates for 4 minutes ?
    6·1 answer
  • To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch
    5·1 answer
  • An object acted on by three forces moves with constant velocity. one force acting on the object is in the positive x direction a
    8·1 answer
  • A person on a merry go round is constantly accerating toward the center
    10·2 answers
  • 7. The uranium nucleus contains a charge 92 times that of the proton. If a proton is shot at the nucleus, how large a repulsive
    12·1 answer
  • Find the angle between the vectors |A+B|=|A-B|​
    9·1 answer
  • Selena, who moves with the grace and fluid motions of a cat, has been described as
    13·1 answer
  • All parts of the electromagnetic spectrum travel at a speed of 3 × 108 m/s when traveling through no medium. A "vacuum" means th
    14·1 answer
  • First use of electricity<br> Greece<br> Itally<br> Allentwon<br> California
    11·1 answer
  • When frequency is increased what happens to the amplitude?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!