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Dennis_Churaev [7]
3 years ago
11

When a ball is rolling down a hill, what forces are acting on the ball? Why does it speed up?

Chemistry
2 answers:
Blizzard [7]3 years ago
7 0

Answer:

the gravity speed up because the friction didn't speed up

Margaret [11]3 years ago
3 0

Answer:gravity

Explanation:

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Calcium carbonate is the major component of marble .Sulphuric acid is one of the major component of acid rain .write a balanced
lisabon 2012 [21]

Answer:

CaCO3 + H2SO4 ---> CaSO4 + H2O +CO2(gas)

6 0
4 years ago
Using your periodic table, determine the electron configuration of Barium ion, Ba+2
seraphim [82]

Answer:

im pretty sure the electron configuration of the barium ion Ba+2 is [Kr]5s24d105p6

Explanation:

4 0
3 years ago
Main job is to sort and package proteins and other substances in a plant cell
melomori [17]

Answer:

Main job of golgi bodies is to sort and package proteins and other substances in a plant cell.

Explanation:

Golgi bodies are also called post office of the cell because it modify and distribute proteins for the cell. First, proteins are made in the organelle of the cell i. e. endoplasmic reticulum. From here, it is send to the Golgi apparatus for modification. Golgi bodies add some special structures with the protein and this protein leaves golgi bodies which is used by the cell where it is needed.

8 0
4 years ago
Biuret reagent will indicate the presence of
weeeeeb [17]
Biuret reagent will indicate the presence of protein in a given sample. It is also known as the Piotrowski's test. This reagent consists of copper (II) sulfate and sodium hydroxide. It detects peptide bonds by the reaction of the copper ions in an alkaline solution. The copper ions would form violet colored complexes when peptide is present in the solution. From this test, concentration can be calculated since the intensity of the color depends on the amount of peptide bonds and according to the Beer-Lambert law concentration and the absorption of light is proportional. The concentration is calculated by a spectrophotometric technique at a wavelength of 540 nm. 
5 0
3 years ago
Hospital patients are administered oxygen from an pressurized
VashaNatasha [74]

Answer:

32000atm

Explanation:

Using Boyle's law equation;

P1V1 = P2V2

Where;

P1 = initial pressure (atm)

P2 = final pressure (atm)

V1 = initial volume (

V2 = final volume (L)

According to the question below:

P1 = 160.0 atm

P2 = 3.0 atm

V1 = 600L

V2 = ?

Using P1V1 = P2V2

160 × 600 = 3 × V2

96000 = 3V2

V2 = 96000/3

V2 = 32000atm

5 0
3 years ago
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