All categories

3 years ago

Democritus discovery

1 answer:

4 0

Democritus was a Greek philosopher who lived between 470-380 B.C. He developed the concept of the 'atom', Greek for 'indivisible'. Democritus believed that everything in the universe was made up of atoms, which were microscopic and indestructible. Democritus had many remarkable insights for his time.

You might be interested in

A spherical balloon is partially blown up and its surface area is measured. More air is then added, increasing the volume of the

Aloiza [94]

Answer:

√2 or 1.414

Explanation:

Area of a sphere

$A=4\pi r^2$

Initial area of the balloon

$A_1=4\pi r_1^2$

Final area of the balloon

$A_2=4\pi r_2^2$

Given that

$A_2=2\times A_1\\\Rightarrow 4\pi r_2^2=2\times 4\pi r_1^2\\\Rightarrow r_2^2=2r_1^2\\\Rightarrow r_2=\sqrt{2}r_1=1.414r_1$

Hence, the radius increases by a factor of √2 or 1.414

5 0

2 years ago

What type of reaction is below?

Nutka1998 [239]

Answer:

B) Synthesis

Explanation:

A combination reaction, also known as a synthesis reaction in chemistry, is when two or more substances, or reactants, combine with each other to form a new product. The product will always be a compound.

7 0

2 years ago

Read 2 more answers

The 630 nm light from a helium neon laser irradiates a grating. The light then falls on a screen where the first bright spot is

mafiozo [28]

Answer:

The second wavelength is 482 nm.

Explanation:

Given that,

Wavelength = 630 nm

Distance from central maxim = 0.51 m

Distance from central maxim of another wavelength = 0.39 m

We need to calculate the second wavelength

Using formula of width of fringe

$\beta=\dfrac{\lambda d}{D}$

Here, d and D will be same for both wavelengths

$\lambda$ = wavelength

$\beta$ = width of fringe

The width of fringe for first wavelength

$\beta_{1}=\dfrac{\lambda_{1} d}{D}$ ....(I)

The width of fringe for second wavelength

$\beta_{2}=\dfrac{\lambda_{2} d}{D}$ ....(II)

Divided equation (I) by equation (II)

$\dfrac{\beta_{1}}{\beta_{2}}=\dfrac{\lambda_{1}}{\lambda_{2}}$

$\lambda_{2}=\dfrac{630\times10^{-9}\times0.39}{0.51}$

$\lambda_{2}=4.82\times10^{-7}$

$\lambda=482\ nm$

Hence, The second wavelength is 482 nm.

4 0

3 years ago

A phoneme is the largest unit of sound in a word. TRUE or FALSE.

Degger [83]

The answer to the question is False i.e A phoneme is not the largest unit of sound.

EXPLANATION:

Phoneme is related to linguistics or the sound system of language which is the language specific.

It is defined as the smallest contrastive unit of sound in speech which can give a distinct meaning. It distinguishes one word from the other word in a unique way .When we put all the phonemes of a particular word, the corresponding word is formed .

4 0

2 years ago

Read 2 more answers

What is a characteristic of physics that astrology does not have?

katrin2010 [14]

Think about it, in physics, it has theories or something that people believe astrology basically consists of MYTHOLOGY and it could also be correct with predictions. Astrology doesnt have actual answers for any type of questions

Hope this helped...

8 0

2 years ago