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
Anna35 [415]
4 years ago
5

As someone falls toward the Earth, what happens to their GPE?

Chemistry
1 answer:
Dimas [21]4 years ago
3 0
<h3>Answer:</h3>

B. Decreases

<h3>Explanation:</h3>
  • The potential energy or stored energy possessed by an object relative to the earth's gravity is known as gravitational potential energy, GPE.
  • This energy depends on the position of the object from the earth's surface and its weight.
  • It is given by, GPE = mass × height × gravitational acceleration
  • Therefore, a heavier object has more gravitational potential compared to a lighter object at the same height.
  • Additionally, an object at a higher height from the surface of the earth will possess more gravitational potential energy compared to an object near the earth's surface.

In this case;

  • We would, therefore, conclude that when someone falls towards the earth his/her gravitational potential energy (GPE) decreases due to a decrease in height from the surface of the earth.
You might be interested in
Write word equation for reaction between sodium and sulphur​
White raven [17]

Answer:

2Na + S —> Na2S

Hope this helps.

4 0
3 years ago
You are doing a peer review of a science experiment. The paper claims that an increase of pressure requires a greater addition o
Rus_ich [418]

This is true because as thermal energy increases, molecules move faster and liquids are turned into gas.

States of matter is determined by the amount of energy possessed by the particles. Particles of a solid has the least amount of energy, liquid particles have more energy than solid particles while gas particles possess the highest amount of energy.

To increase the pressure of a substance, greater thermal energy is added to the substance by heating it up. This heat causes the molecules of the liquid to become more energetic and move faster .

As this occurs, intermolecular forces between the substance is broken as the liquid is converted to gas. The pressure. The energetic gas particles collide faster with the walls of the container thereby increasing the pressure.

Learn more: brainly.com/question/18124975

3 0
2 years ago
An aqueous KNO3 solution is made using 72.5 g of KNO3 diluted to a total solution volume of 2.00 L. Calculate the molarity, mola
Sonja [21]

Answer:

The molarity is 0.359\frac{moles}{L}

The molality is 0.354 \frac{moles}{kg}

The mass percent of the solution es 3.45%

Explanation:

Molarity is a unit of concentration that indicates the amount of moles of solute that appear dissolved in each liter of the mixture. It is determined by:

Molarity (M)=\frac{number of moles of solute}{volume}

Being:

  • K: 39 g/mole
  • N: 14 g/mole
  • O: 16 g/mole

The molar mass of KNO₃ is:

KNO₃=  39 g/mole + 14 g/mole + 3*16 g/mole= 101 g/mole

You can apply the following rule of three: if 101 grams of KNO₃ are present in 1 mole, 72.5 grams in how many moles are present?

moles of KNO_{3}=\frac{72.5 grams*1 mole}{101 grams}

moles of KNO₃= 0.718

So you have:

  • moles of KNO₃= 0.718
  • volume= 2 L

Applying this quantity in the definition of molarity:

molarity=\frac{0.718 moles}{2 L}

Molarity= 0.359\frac{moles}{L}

<u><em>The molarity is 0.359</em></u>\frac{moles}{L}<u><em></em></u>

Molality is a way of measuring the concentration of solute in solvent and indicates the amount of moles of solute in each kilogram of solvent.

Then the molality is calculated by:

Molality=\frac{moles of solute}{mass of solvent in kilograms}

Density is defined as the property that matter, whether solid, liquid or gas, has to compress in a given space. That is, it is the amount of mass per unit volume. So, if the density of 1.05 g / mL for the solution indicates that in 1 mL of solution there are 1.05 grams of solution, in 2000 mL (where 2L = 2000 mL, because 1 L = 1000mL) how much mass is there?

mass=\frac{2000 mL*1.05 grams}{1 mL}

mass= 2100 grams

Since mass solution = mass water + mass KNO₃

then mass water = mass solution - mass KNO₃

Being mass solution 2100 grams and mass KNO₃ 72.5 grams, and replacing you get: mass water= 2100 grams - 72.5 grams

mass water= 2,027.5 grams

Then, being:

  • moles of KNO₃= 0.718
  • mass of solvent in kilograms= 2.0275 kg (being 2,027.5 grams= 2.0275 kilograms because 1,000 grams= 1 kilogram)

Replacing in the definition of molality:

molality=\frac{0.718 moles}{2.0275 kg}

molality= 0.354 \frac{moles}{kg}

<u><em>The molality is 0.354 </em></u>\frac{moles}{kg}<u><em></em></u>

The mass percent of a solution is the number of grams of solute per 100 grams of solution. Then the mass percent is the mass of the element or solute divided by the mass of the compound or solute and the result of which is multiplied by 100 to give a percentage.

mass percent=\frac{mass of solute}{mass of solution} *100

So, in this case:

mass percent=\frac{72.5 grams}{2100 grams} *100

mass percent= 3.45 % KNO₃ by mass

<u><em>The mass percent of the solution es 3.45%</em></u>

3 0
3 years ago
Help whats the answer
vesna_86 [32]

Answer:

I would make the replacement parts with the 3D printer to help fix the well

Explanation:

(

6 0
2 years ago
What are the spectators ions in this reaction?
miv72 [106K]

Answer:

Option C. Na⁺(aq) and Cl¯(aq)

Explanation:

From the question given above, we obtained the following:

Na₂SO₄(aq) + CaCl₂(aq) —> CaSO₄(s) + 2NaCl(aq)

Ionic Equation:

2Na⁺(aq) + SO₄²¯(aq) + Ca²⁺(aq) + 2Cl¯(aq) —> CaSO₄(s) + 2Na⁺(aq) + 2Cl¯(aq)

From the ionic equation above, we can see that Na⁺(aq) and Cl¯(aq) are present on both side of the equation.

Therefore, Na⁺(aq) and Cl¯(aq) are the spectator ions because they did not participate directly in the reaction.

4 0
3 years ago
Other questions:
  • Which of the following correctly orders the layers of the atmosphere from lowest to highest?
    5·2 answers
  • Self meditating to deal with stress
    13·1 answer
  • What state of matter can be compressed?
    11·2 answers
  • Do the following calculation and express the answer using correct scientific notation. (6.00x10^23)y(3.00)/284)
    10·1 answer
  • How much heat is needed to raise the temperature of 20.0g of H2O by 10.6oC?
    8·1 answer
  • Which does your digestive system use to break down food molecules? Bases or Acids
    12·1 answer
  • How many dots would a dot diagram for selenium, one of the group 16 elements, have?
    5·2 answers
  • Chemical bonding for <br><br> Rb &amp; nitrogen,<br><br> Need help!!!
    15·1 answer
  • Help me pleaseeeeeeee​
    11·1 answer
  • A cylinder, with a piston pressing down with a constant pressure, is filled with 1.90 moles of a gas (n1),
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!