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masha68 [24]
3 years ago
8

Which process is defined as breaking down rocks into smaller pieces without changing the rocks' compositions

Physics
2 answers:
storchak [24]3 years ago
8 0

Answer:

mechanical weathering

Explanation:

kobusy [5.1K]3 years ago
4 0

Answer:

Mechanical weathering is responsible for the composition of a rock

Explanation:

The answer is (D)

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A parallel-plate capacitor in air has a plate separation of 1.25 cm and a plate area of 25.0 cm2. The plates are charged to a po
Archy [21]

Answer:

(a) Since net charge remains same,after immersion Q is same

(b) I. 14.56pF ii. 3.05V

(c) ΔU = 5.204nJ

Explanation:

a)

C = kεA/d

k=1 for air

ε is 8.85x10-12F/m

A = .0025m2

d = .125m

C = 8.85x10-12x.0025/.125 = 1.77x10-13F = 0.177pF

Q = CV = .177pF * 244V = 43.188pC

Since net charge remains same,after immersion Q is same

b)

C = kεA/d, for distilled water k is approx. 80

Cwater = Cair x k

=0.177pF x 80 = 14.16pF

Q is same and C is changed V=Q/c holds. where Q is still 43.188pC and C is now 14.16pF, so V = 43.188pC/14.16pF = 3.05V

c) Change in energy: ΔU = Uwater - Uair

Uwater = Q2/2C = (43.188)2/2x.177pF = 5.27nJ

Uair = Q2/2C = (43.188)2/2x14.16pF = 0.066nJ

ΔU = 5.204nJ

6 0
3 years ago
Question 1
Agata [3.3K]

Answer:

Hypothesis:

The amount of limestone that dissolves in the acid is directly proportional to the concentration of acid used.

Explanation:

Acids dissolve limestone according to the following general equation;

2HX(aq) + CaCO3(s) -------> CaX2(aq) + H2O (l) + CO2(g). Where HX represents any acid at all.

This dissolution process is a chemical reaction. It was experimentally observed that the amount of limestone that dissolved in acid depends on the concentration of acid. Various concentrations of acid were then prepared and a particular mass of limestone was dissolved in each concentration of acid. The amount of limestone dissolved in each case was carefully noted.

It was observed that as the concentration of acid increased, the amount of limestone dissolved increased also and vice versa, hence the hypothesis proposed above.

3 0
4 years ago
Currently, astronomers are observing the universe across many different regions of the electromagnetic spectrum, from gamma rays
irakobra [83]

Answer:

Extraterrestrial origination:

3) sequence of pulses varying over time

Cosmic origination:

1) constant, unchanging signal 2) random radio fluctuations 4) single strong visible light burst that fades away over months 5) identical repetitive pulses

Explanation:

The electromagnetic spectrum is usually used to show the whole light ranges that exist in nature. We can simply classify the properties as follow:

Extraterrestrial origination:

3) sequence of pulses varying over time

Cosmic origination:

1) constant, unchanging signal 2) random radio fluctuations 4) single strong visible light burst that fades away over months 5) identical repetitive pulses

4 0
3 years ago
Which of the following statements about Copernicus' heliocentric model of the Solar System are accurate?
Minchanka [31]

Answer:

(i) It was the first such model was supported by scientific evidence: FALSE

(ii) It was not published until Copernicus was close to death: TRUE

(iii) It was the first time a heliocentric model had ever been suggested: FALSE

(iv) It was not controversial, and was readily accepted: FALSE

(v) It stated that the Sun revolved around the Earth: FALSE

(vi) It stated that the Earth revolved around the Sun: TRUE

Explanation:

We proceed to demonstrate the validity of each option from statement:

(i) It was the first such model was supported by scientific evidence: FALSE

The geocentric model was based mostly on interpretation of two astronomical findings: (a) The displacement of the stars with respect to Earth due to stellar parallax, (b) The apparent consistency of brightness of the planet Venus seen from Earth.

(ii) It was not published until Copernicus was close to death: TRUE

Copernicus published his heliocentric theory, contained in the book <em>De revolutionibus orbium coelestium,</em> months before his death, in 1543.

(iii) It was the first time a heliocentric model had ever been suggested: FALSE

Greek mathematician and astronomer Aristarchus of Samos was the first person who proposed the heliocentric model in the 4th Century.

(iv) It was not controversial, and was readily accepted: FALSE

The Roman Catholic Church defended geocentric model proposed by Claudius Ptolemy and Tycho Brahe and rejected the model proposed by Copernicus, whose publication was included in the <em>Index Librorum Prohibitorum</em> in 1616.

(v) It stated that the Sun revolved around the Earth: FALSE

This is the main idea of the geocentric model.

(vi) It stated that the Earth revolved around the Sun: TRUE

This is the main idea of the heliocentric model.

5 0
3 years ago
Water is sold on half-liter bottles. What is the mass, in kg and in g, of the water in such a full bottle?
elena-14-01-66 [18.8K]
<span>Half a liter would mass .5 kg or 500 g.</span>
6 0
4 years ago
Read 2 more answers
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