A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/s2. If the cart has a beginning speed of 2.0 m/s, what is its final speed?

Nuclear fusion is the process which forms all elements up to and including iron, except light elements such as hydrogen and helium.

Nuclear Fusion reactions power the solar and different stars. In a fusion response, two mild nuclei merge to shape a single heavier nucleus.

The method releases power due to the fact the total mass of the ensuing single nucleus is less than the mass of the 2 unique nuclei. The leftover mass turns into electricity.

For years, the science has proved difficult to master. However over the last year, nuclear fusion has inched in the direction of fact. Scientists are mere years from getting extra energy out of fusion reactions than the power required to create them, they stated.

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The energy required to form 100.0 g of \(NO_2\) from its respective elements is approximately 72.12 kJ.

The standard heat of formation of a compound is the enthalpy change that occurs when one mole of the compound is formed from its constituent elements, with all reactants and products in their standard states at a specified temperature and pressure.

To calculate the energy required to form 100.0 g of \(NO_2\) from its respective elements, we need to first determine the number of moles of \(NO_2\) that corresponds to 100.0 g:

Molar mass of \(NO_2\) (nitrogen dioxide) = 46.0055 g/mol

Number of moles of \(NO_2\) = mass / molar mass = 100.0 g / 46.0055 g/mol = 2.1732 moles

The standard heat of formation for \(NO_2\) is 33.2 kJ/mol, which means that the formation of one mole of \(NO_2\) releases 33.2 kJ of energy. Therefore, the energy required to form 2.1732 moles of \(NO_2\) is:

Energy = (33.2 kJ/mol) x (2.1732 mol) = 72.12 kJ

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Answer:

The volume is 20.3

Explanation:

we are given the pH of the solution as 3.17 are we are required to find the [H₃O+]

we know that :

pH = - log[H₃O+]

-pH = log[H₃O+]

10⁻ᵖᴴ = 10ˡᵒᵍ[ᴴ₃ᴼ⁺]

10⁻ᵖᴴ = [H₃O+]

therefore:

10⁻³.¹⁷ = [H₃O+]

6.8x10⁻⁴ M = [H₃O+]

therefore the [H₃O+] is 6.8x10 minus 4 Molar

Answer:

net force

Explanation:

The net force acting on an object is the combination of all of the individual forces acting on it. ... If two forces act on an object in the same direction, the net force is the sum of the two forces.

Answer:

C. how many particles are in the substance

Answer:

it is how hot or cold so bassically c in my test

Explanation:

Answer:

The balanced chemical equation for the combustion of propane is: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g).

Explanation:

Answer:

chemical reaction if that is answer

Explanation:

The structures can be ordered from least to greatest photosynthesis as Stem and Roots, Leaves, Mesophyll Cells, and Chloroplasts.

When considering the efficiency of photosynthesis, the structures can be ordered from least to greatest photosynthesis as follows:

1. Stem and Roots: While stems and roots play vital roles in plant support, nutrient uptake, and water transport, they are not directly involved in photosynthesis. As a result, they have minimal to no contribution to photosynthesis.

2. Leaves: Leaves are the primary photosynthetic organs of plants. They contain specialized cells called chloroplasts, which house the pigment chlorophyll responsible for capturing light energy. Leaves are well-adapted for photosynthesis, with a large surface area and a network of veins that transport water, minerals, and sugars.

3. Mesophyll Cells: Within the leaves, mesophyll cells are the specific site of photosynthesis. These cells contain abundant chloroplasts and are responsible for the majority of photosynthetic activity. Mesophyll cells are divided into two types: palisade mesophyll cells, which are densely packed and located towards the upper leaf surface, and spongy mesophyll cells, which are more loosely arranged and found beneath the palisade layer.

4. Chloroplasts: Chloroplasts are the organelles where photosynthesis occurs. These structures are present within the mesophyll cells of leaves. Chloroplasts house the pigments and enzymes necessary for capturing light energy, converting carbon dioxide and water into glucose, and releasing oxygen as a byproduct.

It is important to note that while the structures listed above demonstrate varying degrees of photosynthetic activity, all of them are involved in the process to some extent, with leaves and their mesophyll cells being the primary sites of photosynthesis in plants.

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Answer:

A-B

C-D

E-F

I think it's these because Potential Energy increase when the graph increases and remain constant when the graph is flat.

Ethylene molecules are nonpolar, with the carbon-carbon double bond providing only a minor degree of polarity, London dispersion forces would be the dominant intermolecular force between them

London dispersion forces are the weakest intermolecular forces and exist between all molecules, regardless of their polarity.

In ethylene (C₂H₄), each molecule is composed of two carbon atoms and four hydrogen atoms. The carbon atoms in ethylene are sp² hybridized, which means they form a double bond with each other.

This results in an electron cloud that is more concentrated between the two carbon atoms, creating temporary dipoles.

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Covalent bonding takes place when two (or more) elements exchange electrons as opposed to ionic bonding, which involves a total transfer of electrons.

The electron, hydrogen, and neutron are the atoms that make up an atom. The core nuclei of the atom, which contains neutrons and protons, is what makes up an atom. The electrons that surround atomic nucleus. Protons have a charge, electrons have a negative charge, while protons are neutral.

There are approximately as many particles as protons in a complex ion. The mass number (M) of atom is perfectly matched by the overall amount of atoms in the atom's nucleus. An electron can never exist by itself. It can also derive its significance from other particles, or it might even be possible to make a positron concurrently.

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Answer:

I think it's true

Explanation:

hey by the way

When the child sits on the partially filled balloon, the pressure of the balloon increases. The pressure change is a doubling of the initial pressure, indicating a factor of 2 increase.

When the child sits on a partially filled balloon, the volume of the balloon decreases by half. According to Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume at constant temperature, the pressure inside the balloon increases.

Let's consider the initial volume of the balloon as V and the initial pressure as P. When the volume decreases by half, it becomes V/2. Since the amount of gas remains constant, the pressure increases to maintain equilibrium. The new pressure can be denoted as P'.

According to Boyle's Law, P₁V₁ = P₂V₂, where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume. Plugging in the values, we have P * V = P' * (V/2).

Simplifying the equation, we get P' = 2P. This means the pressure of the balloon increases by a factor of 2, or it doubles. So, the pressure change can be expressed as an increase of two times the original pressure.

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Answer:

Explanation:

D = mass/volume.

for the units, I'll take it in g/L but I don't know which units you want.

4.44*10^5 mg =  0.444 grams.

0.444/7 = 0.0634 g/L

Answer:

A change in pressure at any point in an enclosed fluid at rest is transmitted undiminished to all points in the fluid. With that said; in a hydraulic brake system, if the piston in the master cylinder(the part your foot pushes on) is one inch square area and you push with 100 pounds, then 100 pounds per square inch is transmitted to all parts of the hydraulic system. Now if the brake caliper piston(the part that pushes against the brake pad) is 2 square inches then there will be a total of 200 lbs of force being applied by the wheel cylinder, because each square inch has 100 pounds pushing on it. This is basically how cars brake systems are designed in order to reduce the amount of force required by the driver.

Btw if u want to give 67 points u must multiply that by 2 since two people answer and they get half of 67.    Im still happy with my 34 though!

Answer:

5 x 10^3 = 5 x 1000 = 5000

Hope this helps.

Good Luck

Answer:

Explanation:

We have 10 is raised to a power of 3, since 3 is positive you are to add three zeros to the right of 5.

Answer:

I think D

Explanation:

Ok, I'm not sure but it sounds right ish you should check a practice video or something. It might also be B or C but im pretty certain it isnt A just ask yourself is the student measuring it in newtons? Is that important in the process? What about if the student is considering the affect of mass is it important? Good luck srry if im not much of help! If this is like A SUPER IMPORTANT TEST OR SOMETHING RLLLLLLLY IMPORTANT just wait for another answer gl!

These are all the possible orbitals for the principal quantum number n=4. For n=4, there are several possible orbitals. I have tabulated them below along with their respective quantum numbers (n, l, and ml):

For n=4, the possible orbitals (by name) are 4s, 4p, 4d, and 4f.

The three quantum numbers that define each orbital are:

1. Principle quantum number (n): This defines the energy level of the orbital and can have a value from 1 to infinity. For n=4, the value of n is fixed.

2. Angular momentum quantum number (l): This defines the shape of the orbital and can have integer values from 0 to n-1. For 4s, l=0; for 4p, l=1; for 4d, l=2; and for 4f, l=3.

3. Magnetic quantum number (m): This defines the orientation of the orbital in space and can have integer values from -l to +l. For 4s, m=0; for 4p, m can have values -1, 0, or 1; for 4d, m can have values -2, -1, 0, 1, or 2; and for 4f, m can have values -3, -2, -1, 0, 1, 2, or 3.

Therefore, for n=4, the possible orbitals (by name) and their corresponding quantum numbers are:

- 4s: n=4, l=0, m=0
- 4p: n=4, l=1, m=-1, 0, or 1
- 4d: n=4, l=2, m=-2, -1, 0, 1, or 2
- 4f: n=4, l=3, m=-3, -2, -1, 0, 1, 2, or 3.

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1- U(r) has a repulsive region at small r due to electron-electron repulsion, followed by an attractive region at intermediate r due to electron-nucleus attraction, and a negligible potential at large r.

The potential energy, U(r), for a system of two atoms can be represented graphically as a function of the internuclear separation distance, r. At small values of r, the atoms experience repulsion due to the electron-electron interactions, resulting in a steep increase in potential energy. This repulsive region prevents the atoms from getting too close to each other.

As the internuclear separation distance increases, the attractive force between the electrons and the nuclei becomes dominant, leading to a decrease in potential energy. This attractive region is typically characterized by a shallow potential well. At intermediate values of r, the potential energy reaches a minimum, indicating a stable configuration where the atoms are bonded.

2- Bohr's model describes the hydrogen atom as a nucleus with an electron orbiting it in quantized energy levels. Electrons can transition between levels by absorbing/emitting photons with energy given by ΔE = hf. The model has limitations but introduced the concept of discrete energy states in atoms.

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Answer:

Many emerging diseases arise when infectious agents in animals are passed to humans (referred to as zoonoses). As the human population expands in number and into new geographical regions, the possibility that humans will come into close contact with animal species that are potential hosts of an infectious agent increases.

Explanation:

Ksp is called the solubility product constant. The term "solubility product" refers to the concentration of an ionic compound in a saturated solution.

The term "product" refers to a mathematical term for multiplying the concentration of ions in solution.

In the given case, we have;

Ksp for Mg(OH)2 = 8.9 × 10^-12

Molar solubility of Mg(OH)2 can be determined by using the following formula:

Ksp = [Mg2+][OH-]^2Ksp

= (x)(2x)^2Ksp

= 4x^3x

= (Ksp / 4)^1/3x

= [(8.9 × 10^-12) / 4]^(1/3)x

= 1.23 × 10^-4 M

Therefore, the molar solubility of Mg(OH)2 at 25°C is 1.23  104 M.

The setup is:Mg(OH)2(s)  Mg2+(aq) + 2OH-(aq)I:

0, 0, 0C: +x, +2x, +2xE: x, 2x, 2xKsp

= [Mg2+][OH-]^2Ksp

= (x)(2x)^2Ksp

= 4x^3x

= (Ksp / 4)^1/3x

= [(8.9 × 10^-12) / 4]^(1/3)x

= 1.23 × 10^-4 M

The molar solubility of Mg(OH)2 at 25°C is 1.23  104 M. The calculation and setup for this problem are shown above.

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Answer:

I think it's A or D

Explanation:

apologies if I get this wrong..

Answer:c.0

Explanation: hopefully this isn’t wrong, but wouldn’t it be 0 since it was something the mother did later on so it really wasn’t a trait of her? And also the mother didn’t born with a short tail?

Answer:

Acceleration, \(a=55.88\ m/s^2\)

Explanation:

It is given that, A top fuel dragster is designed to go from 0 to 100 miles per hour in a mere 0.8.

Initial velocity, u = 0

Final velocity, v = 100 mph

1 mph = 0.44704 m/s

100 mph = 44.704 m/s

Time, t = 0.8 s

We need to find its acceleration. Rate of change of velocity equals acceleration.

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{44.704-0}{0.8}\\\\a=55.88\ m/s^2\)

So, the acceleration is \(55.88\ m/s^2\)

During the propagation step in the chlorination of propane, there are several possible reactions and electron movements. However, I will provide you with the most common reaction that occurs during this step:

CH3CH2CH3 + Cl2 -> CH3CH2CH2Cl + HCl

In this reaction, the movement of electrons can be described as follows:

One of the chlorine atoms in Cl2 breaks its diatomic bond, forming two chlorine radicals:

Cl2 -> 2Cl•

One chlorine radical attacks the propane molecule (CH3CH2CH3), abstracting a hydrogen atom and forming a new C-Cl bond:

Cl• + CH3CH2CH3 -> CH3CH2CH2• + HCl

The resulting ethyl radical (CH3CH2CH2•) can react with another chlorine molecule (Cl2) to continue the propagation cycle:

CH3CH2CH2• + Cl2 -> CH3CH2CH2Cl + Cl•

This process repeats, with the chlorine radical abstracting a hydrogen atom from another propane molecule, forming a new C-Cl bond, and generating a new alkyl radical (e.g., propyl radical) and a new chlorine radical. The reaction continues until all available propane molecules are consumed or until termination steps occur.

Note: It's important to mention that there can be other possible reactions and pathways during the chlorination of propane, depending on reaction conditions and the presence of impurities. The reaction described above represents a simplified mechanism.

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The volume of the metal cube that has a mass of 43.7g and a density of 2.76g/cm³ is 15.83cm³.

The volume of a substance can be calculated by dividing the mass of the substance by its density. That is;

Volume = mass ÷ density

According to this question, a metal cube has a mass of 43.7g and a density of 2.76g/cm³. The volume cab be calculated as follows:

Volume = 43.7g ÷ 2.76g/cm³

Volume = 15.83cm³

Therefore, the volume of the metal cube that has a mass of 43.7g and a density of 2.76g/cm³ is 15.83cm³.

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Answer:

Answer: PV/RT = n = N equals startfraction P V over R T endfraction Explanation:

Liquids are more compressible than solids.

In liquids there is space between the molecules, not a lot, but there is enough space to offer some compressibility. Solids are arranged in regular patterns and their molecules are almost fixed close together.

Answer:

if we take away the web, we can slide down

Explanation:

During RNA synthesis, the 3' hydroxyl (also called as the hydroxyl) of the preceding codon is modified by the phosphatase of an incoming sufficient to amount 

Phosphates are necessary for the generation of energy, the operation of muscles and nerves, and the growth of bones. For detecting the phosphate levels in malnourished individuals, ph tests are really quite helpful.

Phosphate is a naturally occurring form of phosphorous, and makes up 25% of all the minerals necessary for plant growth and maintenance. Phosphorous is a common feature in many goods and is necessary for the production of all fertilizers.

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