Why does the total mechanical energy stay the same as kinetic and potential energy change?
Answers
total mechanical energy is the sum of kinetic energy and potential energy so it will remain same always
Answer:
Explanation:
Because the kinetic and potential energy are constant. A good example of kinetic and potential energy are throwing a ball up. It leaves your hand with kinetic energy. When it reaches the top it doesn’t have any kinetic force but potential energy equal to the kinetic energy the ball had when you threw it up. And, when it comes back to your hand it has the same kinetic energy it had when it left your hand. Thus, the sum of the kinetic energy plus potential energy is a constant.
Related Questions
Please help! I need the answers! you’ll get 25 points!!
Answers
Answer:
183918551670's1665....
A sacrificial anode can be used to protect a metal like iron from corrosion. In order for this to work, the anode must be _____ than the metal that it is protecting.
Answers
Answer:
more active
Explanation:
nuclear reactions can be written out in equation form with information about the nuclei that are produced. in one to two sentences, explain how you would identify the reaction as fusion, and give two different criteria.
Answers
Nuclear fusion involves the combination of two light nuclei to form a heavier nucleus with emission of energy.
A nuclear reaction equation is a representation of the change that takes place as one nucleus is converted to another. A nuclear transformation could be any of the following;
Nuclear fissionNuclear fusionTransmutationWe can know that a nuclear fusion is taking place when two nuclei come together to form a larger nucleus and emit energy. I would identify a nuclear fusion when;
Two light atom combine to give a larger nucleusTremendous energy is producedLearn more: https://brainly.com/question/1527403
2. An atom has 24 protons and 28 neutrons.
What is the atomic number
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Answer:
The atomic number is 24.
Explanation:
The atomic number is the total amount of protons that an atom has. How it differs between the atomic mass is that the atomic mass is the total sum of protons and neutron. If an atom is neutral (Non-ionized), then the amount of electrons is equal to the amount of protons.
This atom has:
An atomic number of 24Has 24 electronsAn atomic mass of 52This atom is Chromium-52what is the cathode and anode of k2so4
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O 2
Here,
Electrolysis of H
2
O takes place:
2H
2
O→O
2
+4H
⊕
+4e
−
Determine the amount of heat energy in joules required to raise the temperature of 7.40g of water from 29.0OC to 46.0 OC Specific heat of water is: 4.184 J/gOC
Answers
The amount of heat energy in joules required to raise the temperature of 7.40g of water is 526.35 Joules
The amount of energy is expressed according to the formula expressed as:
[tex]E = mc\triangle \theta[/tex]
m is the mass of water = 7.40grams
c is the specific heat of water = 4.184 J/g⁰C
[tex]\triangle \theta = 46 - 29\\ \triangle \theta = 17^0[/tex]
Substitute the given parameters into the formula:
[tex]E = 7.4 \times 17 \times 4.184\\E=526.3472Joules[/tex]
Hence the amount of heat energy in joules required to raise the temperature of 7.40g of water is 526.35 Joules
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How should an amoeba be classified
Answers
Explanation:
Amoebas are identified by their ability to form temporary cytoplasmic extensions called pseudopodia, or false feet, by means of which they move about. This type of movement, called amoeboid movement, is considered to be the most primitive form of animal locomotion.
True or False?
A speed-versus-time graph for a car's motion is a horizontal line at a speed of 12 m/s. The car's acceleration during this time is 12 m/s2
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What molecules have 5 carbon atoms and 12 hydrogen atoms
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ANSWER
THE PENTANES
EXPLANATION
he word for5 in Greek is PENT like the 5 sided and 5 angled building in Wachington the PENTagon.
SO C5H12 IS PENTAND BECAUSE IT HAS NO DOUBLE BONDAS IT IS AN ALKANE
SO SO C5H12 IS PENT-ANE PENTANE AND THERE ARE MULTIPLE FORMS OF IT
PLS HELP ASAP I WILL GIVE BRAINLIEST FOR THE ANSWER THAT IS RIGHT!Based on the diagram below, in what period is the atom located on the periodic table? *a. period 4b. period 2c. period 6d. period 1
Answers
Answer:
6
Explanation:
im guessing because there is no diagram
1. What two factors change the speed of the atoms/molecules?
Answers
Answer:
With an increase in temperature, the particles gain kinetic energy and move faster. The actual average speed of the particles depends on their mass as well as the temperature – heavier particles move more slowly than lighter ones at the same temperature.
Explanation:
Hope it helps.
100points and BRAINEST awnser PLEASEEEE HELP
I need help with 2 and three
Answers
Answer:
2 H2O → 2 H2 + O. Decomposition of water.
There are 4 hydrogen atoms on the left side of the equation (CH4)
2 on the right side (H2O).
Two oxygen atoms
Explanation:
What animal have jaws?
Answers
Answer:
all of em
Explanation:
they got mouths right
What can you conclude about the symmetry of the C3H5 ion as it actually exists, as regards the bond lengths and the distribution of the positive charge
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In the allyl cation, all the bond lengths are equal and the positive charge is delocalized over all the three carbon atoms.
The allyl cation has the formula C2H5+. In the allyl cation, the positive charge is delocalized over the three carbon atoms as shown in the image attached. Hence, relevant resonance structures can be proposed for the allyl cation.
The bond lengths in the allyl cation are intermediate between the bond lengths of double bonds and single bonds. All the bond lengths are equal.
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Determine the heat required to raise the temperature of 9.4 mole of water from 75.0oC to 125oC at atmospheric pressure. Note that water transitions from the liquid to the vapor state. Express your answers in Joules.
Answers
The heat capacity required to raise the temperature of 9.4 mole of water from 75.0oC to 125oC at atmospheric pressure is 35429 J.
The following information is available from the question;
Number of moles = 9.4 mole
Initial temperature = 75.0oC
Final temperature = 125oC
Molar heat capacity = 75.38 J/mol °C
Now;
H = ncθ
m = Number of moles of water
c = Molar heat capacity of water
θ = Temperature rise
Substituting values;
H = 9.4 mole × 75.38 J/mol °C × ( 125oC - 75.0oC)
H = 35429 J
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elements in the same period share the same number of:
Answers
Answer: electron on the shell of the atom
Explanation: that what I trying to remember
one mole of titanium contains how many atoms
Answers
6.022 x 10 23 titanium atoms
In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms.
Hope this helps :)
aspartame is the methyl ester of a dipeptide made of phenylalanine and aspartic acid. what are the expected products of the hydrolysis of aspartame?
Answers
Aspartame is an artificial sweetener that is 200 times sweeter than sucrose. The expected products from the hydrolysis of aspartame are;
MethanolAmino acids (Phenylanaline)AspartateAspartame is a methyl ester that is gotten from aspartic acid and phenylalanine dipeptide. Aspartame is used by many food companies as a replacement for sugar. It is deemed suitable for consumption.
The hydrolysis of aspartame takes place in the small intestine. There, it is immediately transformed to methanol, phenylalanine, and aspartate.
Further products that are obtained after hydrolysis are; formaldehyde and formic acid.
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In a chemical reaction, mass is conserved. This means that
a.
The mass of the products is always twice the mass of the reactants.
b.
The mass of the products stays the same during a chemical reaction
c.
The mass of the reactants stays the same during a chemical reaction
d.
The type and number of atoms in the reactants equals the type and number of atoms in the products
Answers
Porphyry copper deposits that are weathered are more valuable than nonweathered deposits because ______.
Answers
Porphyry copper deposits describes copper ore bodies which are formed from large copper ore bodies due to the high temperature exerted by magmatic fluid originating below the ore deposit.
Weathered portion of the Porphyry copper resulting from the reaction of hydrothermal fluid are washed to greater depth level below the unweathered portion of the deposit. Copper deposits at greater depth are usually more concentrated with copper than those above.Hence, reason why weathered porphyry are more valuable than unweathered porphyry.
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PLEASE HELP ASAP!!
Which statement best describes hydrogen bonding?
The electronegative hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
The electronegative hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction.
The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
The electropositive hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction.
Answers
Regarding hydrogen bonding, it is true that the electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
Hydrogen bondings are intermolecular forces among molecules that contain:
A hydrogen atom, which has a positive charge density.An atom that is way more electronegative than hydrogen, such as N, O or F, which has a negative charge density.The hydrogen bonding is formed between H (positive pole) of 1 molecule and the other atom (negative pole) of the other molecule.
Which statement best describes hydrogen bonding?
The electronegative hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction. NO. Hydrogen is electropositive.The electronegative hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction. NO. Hydrogen is electropositive and the other atom is electronegative.The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction. YES.The electropositive hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction. NO. The other atom is electronegative.Regarding hydrogen bonding, it is true that the electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
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Answer:
1.Heat energy is added to the substance, weakening the electrical attraction between molecules.
2.Both the melting point and boiling point are lower.
3. The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
4. dipole
5.Water and ethanol have different molecular structures.
You're Welcome :)
Would the answer be B?
Answers
Answer:
yes the answer would be b
what is the maximum number of electrons that can occupy the 3 shell of an atom?
Answers
The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10)
identify whether each change represents an oxidation or reduction. then determine how many electrons were involved and which side of the reaction they should appear on in the half-reaction.
Answers
In a redox reaction, we can identify 2 kinds of half-reactions:
Oxidation: the oxidation number increases.Reduction: the oxidation number decreases.Let's consider the following half-reactions.
Al ⇒ Al³⁺This is an oxidation because the oxidation number increases from 0 to 3+. To balance it, we need 3 electrons on the right side.
Cu²⁺ ⇒ CuThis is a reduction because the oxidation number decreases from 2+ to 0. To balance it, we need 2 electrons on the right side.
2 F⁻ ⇒ F₂This is an oxidation because the oxidation number increases from -1 to 0. To balance it, we need 2 electrons on the right side.
Al ⇒ Al³⁺ is an oxidation and 3 electrons on the right side are needed.Cu²⁺ ⇒ Cu is a reduction and 2 electrons on the left side are needed.2 F⁻ ⇒ F₂ is an oxidation and 2 electrons on the right side are needed.Learn more: https://brainly.com/question/2671074
Identify whether each change represents an oxidation or reduction. then determine how many electrons were involved and which side of the reaction they should appear on in the half-reaction.
Al ⇒ Al³⁺
Cu²⁺ ⇒ Cu
2 F⁻ ⇒ F₂
Explain how the absorbtion of energy affects the speed of the particles in a substance
Answers
A molecule contains 16 atoms and undergoes a chemical change. How does the chemical change affect the roral number of aroms of each
element?
A.
It changes to zero.
B.
It decreases.
C.
It remains the same.
D.
It increases
Answers
Answer:
When a molecule contains 16 atoms and undergoes a chemical change it changes to zero
Poisons are more serious and harmful than toxins if ingested because the _____ is lower. Small amounts of poison can be extremely dangerous.
Answers
Answer:
The death is lower
Explanation:
im gonna get a warning watch
Write the nuclear decay equation for the alpha particle decay of Pu-243
Answers
Answer:
Explanation:
The reaction can be represented by this nuclear equation: 23892U → 23490Th + 42He + Energy.
how to find valence electrons from electron configuration
Answers
Answer:
group 8 noble gases
Explanation:
they are inert gases so have Valence electron configuration
How many Atoms are in a Carbon Molecule??
Answers
Answer:
6.023×10^23
Explanation:
as 1 atom of carbon molecules is equal to the Avogadro's number.i.e. 6.023×10^23
