57:17
A ball that has a mechanical energy of 65 J has 12 J of kinetic energy. The ball has blank
energy.
J of potential energy

Answers

Answer 1

Answer:

53 Joules

Explanation:

Applying the law of conservation of mechanical energy.

Law of conservation of mechanical energy: States that energy although, energy can not be transformed from one form to another, the total energy of the system remain the same.

I.e,

Mechanical Energy = E.K+P.E..................... Equation 1

Where E.K = Kinetic energy, P.E  = Potential energy.

From the question,

Given: Mechanical energy = 65 Joules, K.E = 12 J

Substitute these values into equation 1 and solve for P.E

65 = 12+P.E

P.E = 65-12

P.E = 53 Joules


Related Questions

The diagram shows three isotopes. What element is represented?

hydrogen

helium

lithium

Answers

Answer:

The diagram shows three isotopes. What element is represented?

A. hydrogen

B. helium

C. lithium

A. hydrogen

A. Is The Correct Answer

aquien le elimina las respuestas

Answers

No se :/, a ti si te paso??

TIMED PLS PLS HELP ASAP

The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the sky. Calculate the energy (in Joules) of a single photon of blue light with a frequency of 6.00 × 10¹⁴ Hz. (h = 6.626 × 10⁻³⁴ J • s)

Answers

Answer:

It's me mario

Explanation:

how to convert Kelvin to degree Celsius? is there any method​

Answers

Answer:

[tex]{ \tt{kelvin = 273 + celcius \: degree}} \\ { \boxed{ \bf{celcius = kelvin - 273}}}[/tex]

Answer:

To convert Kelvins into Celsius degrees, the formula is K − 273.15 = °C

Pls mark me brainliest.

name the compound: RuO

Answers

[tex]\large \mid \underline {\bf {{{\color{navy}{Ruthenium \: \: oxide...}}}}} \mid[/tex]

when carbon is heated in a limited supply of oxygen, a gas is obtained.
1 .what is the name of this gas​

Answers

Answer:

carbon monoxide

I think its correct but I am not sure

Answer: when carbon is heated in air carbon dioxide is formed, so is incomplete combustion which results in carbon monoxide.

Explanation: but when carbon dioxide reacts with more oxygen carbon monoxide is formed i guess.

I AM A BIT SURE BUT HOPE THIS HELPSSSS!!!!

A free-moving neutron is absorbed by the nucleus of an atom. This can
cause:
A. the protons in the nucleus to begin to search for more protons.
B. the atom to become unstable and rip apart.
C. the bonds in the nucleus to become stronger and release heat.
O D. the atom to absorb more neutrons to balance the protons.

Answers

Answer:

the atom to become unstable and rip apart.

Explanation:

We define radioactivity as the spontaneous disintegration of atoms. It could occur naturally or artificially.

Artificial radioactivity occurs either by the process of nuclear fusion (combination of two light nuclei) or nuclear fission(bombarding of a heavy nucleus with a small particle such as a neutron).

When a heavy nucleus is bombarded with a neutron, the nucleus becomes unstable and rips apart producing a daughter nucleus/nuclei and more neutrons hence the process continues. This is otherwise called a chain reaction.

La masa de una olla es de 300g y contiene 90% de aluminio. Hallar el número de moles de aluminio de la olla. P.A.(Al= 27)

Answers

Explanation:

The mass of a pot is 300g and contains 90% aluminum. Find the number of moles of aluminum in the pot. P.A. (Al = 27)

The mass of aluminum present in the pot is:

[tex]300 g * 90/100\\=270 g[/tex]

Hence, in the given pot 270g Al is present.

[tex]Number of moles of Al=\frac{given mass ofAl}{its molar mass}[/tex]

The gram atomic mass of Al -27 g/mol

Given the mass of Al is 270 g

Substitute these values in the above formula:

[tex]Number of moles of Al=\frac{given mass ofAl}{its molar mass}\\=\frac{270 g}{27 g} \\=10.0 mol[/tex]

Answer is 10.0 mol of Al is present.


Write the correct IUPAC name for each of the following structures (3 marks per
structure, 1 mark deduction per error):

Answers

Answer:

Methyl group

Explanation:

From the diagram shown, we can see that the family group CH3 is attached to the structure.

This is simply called a methyl group because it is derived from me than and written that way to show the direct bonding between carbon and the 3 hydrogen atoms.

Fumaric acid, which occurs in many plants, contains, by mass, 41.4% carbon, 3.47% hydrogen, and 55.1% oxygen. The molecular mass of this compound is 116 amu. The molecular formula of this compound is

Question 15 options:

CHO


C3H3O


C3H3O3


C4H4O4


C6H6O6

Answers

Answer:

Explanation:

C = 41.4/12 = 3.43

H = 3.47/1 = 3.47

O = 55.1/16 =3.44

CHO is the skeletal formula (divide each by the lowest number above). The results are close enough to 1 to be 1.

(CHO)_x = 116

C + H + O = 29

(29) _ x = 116

x = 116/29

x = 4

So there area 4 carbons 4 hydrogens and 4 oxygens.

The correct formula is C4H4O4

Which of these is a chemical property of a substance?

Answers

Answer:

A chemical property is a characteristic of a substance that may be observed when it participates in a chemical reaction. Examples of chemical properties include flammability, toxicity, chemical stability, and heat of combustion

!!!!!!URGENT!!!!!!
What do the coefficients in the following balanced chemical equation mean?
2H2 + O2 + 2H2O

A) 2 moles of hydrogen and 1 mole of oxygen in the reactants

B) 2 moles of oxygen and 1 mole of hydrogen in the reactants

C) 2 moles of oxygen and 1 mole of hydrogen in the products

D) 2 moles of hydrogen and 1 mole of oxygen in the products

Answers

Answer:

2moles of hydrogen and 1 mole of oxygen in the reactants

If 0.8 g of gas Z occupies 0.56 dm at s.1.p., calculate its relative molecular mass. (Molar volume of gas is 22.4 dm.)​

Answers

Answer:

32

Explanation:

0.56dm of gas has 0.8g

22.4dm of gas Z has a mass of 22.4/0.56X0.8

the relative molecular mass of gas Z is 32

Which is a mixture?
Sodium metal
chlonne gas
sodium metal and chlonne gas
sodium chlonde (salt) and water

Answers

Answer:

I believe it's salt and water

Explanation:

not sure

Answer:

Mixture is a electronic device used to peel the things such as onion ,tomato,ginger, garlic etc.

If an atom contains more
electrons than protons, it is

Answers

Answer:

If an atom has the same number of electrons as protons, it is a neutral atom.

Explanation:

The structure of copper is described as a lattice of positive ions in a 'sea of electrons'.
Which statements are correct?
1 Copper has a high melting point because of the strong electrostatic attraction
between the positive ions and the 'sea of electrons'.
2 Copper is malleable because the layers of atoms in the lattice can slide over each
other.
3 Copper atoms can be oxidised to form copper ions by losing electrons.
A
1, 2 and 3
B
1 and 2 only
с
1 and 3 only
D 2 and 3 only

Answers

Answer:

A

Explanation:

Metal atoms are held together by metallic bonds. The metallic bonds are composed of a lattice of positive ions in a 'sea of electrons'.

The metal atoms are held together by strong electrostatic attraction between the positive ions and the 'sea of electrons' leading to high melting point of metals including copper.

Similarly, when a metal undergoes stress, the layers of the metal roll over each other but the lattice remains in place. Hence for metals such as Copper, layers of atoms in the lattice can slide over each other thereby making the metal malleable.

Metals oxidize by electron loss. Since Copper is metal, it can also be oxidized to form copper ions by loosing electrons.

does anyone know the substance of an egg after it has been cooked?​

Answers

Answer:

Denaturation is what happens when heat is applied to the eggs. ... The heat coming from your stove denatures the protein by disrupting some of its bonds that held the molecule into shape. In the case of hard-boiled eggs, the proteins clump together and solidify, causing the egg white and yolk to harden.

I HOPE THIS WILL HELP YOU

HAVE A GREAT DAY :)

Which statements describe lattice energy?

Answers

Answer:

It increases as the size of the ions decreases.

It increases as the charge on the ions increases.

It is a measure of the strength of the bonds between ions in a compound.

Explanation:

Hope this helps

why do scientists classify living things? ( I need 4 reasons why) thank you take care x​

Answers

Answer:

1. To be able to easily name organisms

2. To ease communication among scientists

3. To give knowledge about the broad variety of organisms

4. To make the study of organisms easier

A thief who has stolen large quantities of uranium-235 may have increased
the threat of what?
A. Alpha decay
B. Nuclear fusion
C. Nuclear waste
D. Proliferation

Answers

Since uranium - 235 decays by alpha decay, the thief runs a risk of exposure to alpha decay.

What is alpha decay?

Radioactive decay is the sponteanous disintergration of a nuclide to yiled daughter nuclide and release energy.

We can see the decay of Uranium -235 in the image attached to this answer. Hence, it then follows that the theif here runs the risk of exposure to alpha decay.

Learn more about alpha decay: https://brainly.com/question/9904853

Answer:

D. Prolideration

Explanation:

Just took the test

- Write equations for (a) the decomposition of carbon monoxide-
co_to produce carbon--and oxygen gas and (b) the synthesis reaction for the formation of carbon monoxide from carbon and Oxygen.

Answers

Explanation:

here's the answer to your question about

______ exhibits the highest
intermolecular forces of the states of matter.

A. Solid

B. Liquid

C. Gas

D. Vacuum

Answers

I would say A) solid

What is the product of the unbalanced equation below?
Al(s) + Br2(g) →
The Periodic Table
O A. Al(s) + Br2(g)
B. AlBr(s)
C. Al2Br3(s)
O D. AlBr3(s)

Answers

Answer:

D

Explanation:

The answer is D. I'm not sure that it is a solid. I don't think it is a ppte, which is the only way it can be a true solid. It is ionic if the reaction is taking place in water and there is someway to start the reaction. Be that as it may, the internal balace numbers of the chemical produced is the only possible answer. The balanced eq;uatioon is

2Al + 3Br2 ==> 2AlBr3

Help please i beg someone answer and explain

Answers

Answer:

Q,N,1) lithium + hydrochloric -> lithium chloride + Hydrogen.

word equation ( 2li + 2HCl -> 2liCl + H2)

Liquids have a(n)____shape and A(n)_____volume.

A. indefinite, indefinite

B. indefinite, definite

C. definite, definite

D. definite, indefinite

Answers

B. Indefinite, definite

Why are there 8 elements in the 3rd stage in a periodic table ?​

Answers

Answer:

PLEASE MARK ME AS THE BRAINLIEST

Explanation:

According to the 2n2 rule, the maximum number of electrons in the third period = 2 x (3)2 = 18. But, the last shell cannot accommodate more than 8 electrons so, the number of electrons in third period is 8. Hence, the number of elements is also 8.

What is the name of this compound

Answers

Answer:

horizontal

Explanation:

In an experiment, a student wants to increase the rate of a reaction that involves gases. Which change to the
reactants would accomplish this?
Increase the volume to decrease pressure and to increase concentration.
O Increase the volume to increase pressure and to decrease concentration.
O Decrease the volume to decrease pressure and to increase concentration.
O Decrease the volume to increase pressure and to increase concentration.

Answers

Answer:

Decrease the volume to increase pressure and to increase concentration.

Explanation:

Increasing the concentration will increase the number of collisions per second and therefore the rate of reaction.

Pls mark me as brainliest.

Answer:

The last option: Decrease the volume to increase pressure and to increase concentration.

Explanation:

You can support your choice on basis of the collision theory.  According to the collision theory, chemical reactions happen when the molecules collide with each other, in the correct orientation and with enough kinetic energy to overcome the activation energy.  As a consequence, the larger the number of collisions the larger the rate of a reaction.  In the case of a reaction that involves gases, decreasing the volume will increase the pressure and the concentration (volume is inversely related to both the pressure and the concentration) causing the molecules to be closer to each other and to collide with higher frequency, this is you will expect more collisions, and so an increase on the rate of the reaction. That is expressed by the last choice: decrease the volume to increase pressure and to increase concentration.

If 45.6 g of CO2 is in a 2.75 L container at 25.0 °C, predict the pressure in this container, in kPa.

Answers

Answer:

936.97 KPa

Explanation:

We'll begin by calculating the number of mole in 45.6 g of CO₂. This can be obtained as follow:

Mass of CO₂ = 45.6 g

Molar mass of CO₂ = 12 + (16×2)

= 12 + 32

= 44 g/mole

Mole of CO₂ =?

Mole = mass /molar mass

Mole of CO₂ = 45.6 / 44

Mole of CO₂ = 1.04 mole

Next, we shall convert 25.0 °C to Kelvin temperature. This can be obtained as follow:

T (K) = T (°C) + 273

T (°C) = 25.0 °C

T (K) = 25.0 °C + 273

T (K) = 298 K

Finally, we shall determine the pressure. This can be obtained as follow:

Mole of CO₂ (n) = 1.04 mole

Volume (V) = 2.75 L

Temperature (T) = 298 K

Gas constant = 8.314 KPa.L/Kmol

Pressure (P) =?

PV = nRT

P × 2.75 = 1.04 × 8.314 × 298

P × 2.75 = 2576.67488

Divide both side by 2.75

P = 2576.67488 / 2.75

P = 936.97 KPa

Thus, the pressure is 936.97 KPa

what is another name for hard water?

Answers

Answer:

Hyponym is the another name for hard water.

Explanation:

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