A 50 kg wagon pulled with a 100 n Force. if the force is increased to 200 n, how quickly will the wagon accelerate ​

Answer:

Wave is a disturbance or energy that propagate through medium from one point to other point

So basically it is a flowing energy that flows into the medium and hence medium particles start oscillating about their mean position to and fro.

This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion

This means the disturbance or energy continuously flow through the medium such that it will change the position of medium particle and this will be cyclic in order

For an example

y(x,t) = Asin(kx - ωt + φ)

So here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"

Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value

Due to this phenomenon of repetition of its same position we can say that it is disturbance of wave is cyclic.

Explanation:

The value of b in the equation \(\( f(t) = 85 \cdot b^t \)\) represents the decay factor of the radioactive substance. To determine the value of \( b \), we can use the information that the half-life of the substance is 21 years.

The half-life of a radioactive substance is the time it takes for half of the substance to decay. In this case, the half-life is 21 years, which means that after 21 years, the amount of the substance remaining will be half of the initial amount.

We can use this information to set up an equation:

\(\(\frac{1}{2} = b^{21}\)\)

To solve for b, we need to take the 21st root of both sides of the equation:

\(\(b = \left(\frac{1}{2}\right)^{\frac{1}{21}}\)\)

Using a calculator, we can evaluate this expression:

\(\(b \approx 0.965\)\)

Therefore, the value of b in the equation \(\( f(t) = 85 \cdot b^t \)\) is approximately 0.965.

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The amount of methane inside the container if there are 34.4 L of gas at 15.0 C and 0.989 atm is 23.02 grams.

The mass of methane in a container if there is a specific volume and temperature can be calculated as follows;

PV = nRT

Where;

0.989 × 34.4 = n × 0.0821 × 288

34.0216 = 23.6448n

n = 34.0216 ÷ 23.6448

n = 1.44 moles

molar mass of methane = 16g/mol

mass = 16 × 1.44 = 23.02 grams

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Answer:

c

Explanation:

the temperature of the person's hand is hight than the temperature of the smoothie

Answer:

c

Explanation:

the temperature of the person's hand is hight than the temperature of the smoothie

decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

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The molar mass of the unknown liquid is approximately 256.62 g/mol, calculated using the formula ΔTf / Kf * (1 / molality).

To find the molar mass of the unknown liquid, we need to use the equation for freezing point depression:

ΔT = Kf * m

where ΔT is the change in freezing point, Kf is the freezing point depression constant for the solvent (in this case, water), and m is the molality of the solution.

First, we calculate the molality of the solution using the formula:

molality (m) = moles of solute / mass of solvent in kg

Since the solvent is water, the mass of water in kg is calculated as:

mass of water (kg) = 110.0 g / 1000 = 0.110 kg

To calculate the moles of solute, we need to convert the mass of the unknown liquid to moles. We can use the formula:

moles = mass / molar mass

Let's denote the molar mass of the unknown liquid as M. Therefore, we have:

moles of solute = 20.0 g / M

Now, substituting the values into the molality equation:

m = (20.0 g / M) / 0.110 kg

Simplifying further:

m = (20.0 g / M) * (1 kg / 0.110 g)

m = 181.8 / M

Next, we can substitute this molality value and the given freezing point depression constant (Kf = 1.86 °C/m) into the freezing point depression equation:

ΔT = Kf * m

-1.32 °C = 1.86 °C/m * (181.8 / M)

Simplifying further:

-1.32 M = 1.86 * 181.8

-1.32 M = 338.51

M = 338.51 / -1.32

M ≈ -256.62 g/mol

However, the molar mass cannot be negative. It is likely that an error occurred during calculations or in the given information. Please review the problem and double-check the values provided.

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Answer:

When you add so much solute that no more dissolves you have a SATURATED SOLUTION.

Answer:

iIt is called as point of saturation or saturated solution

A total of 75.0 joules of heat are absorbed as 3.5 moles of lead are heated from 12.0°C to 52.0°C.The specific heat of lead is 142.8× 10²³ J/gºC.

The term specific heat is defined as the quantity of heat required to increase the temperature of one gram of a substance by one Celsius degree. Its units are J/(kg K) or J/(kg °C).

Given:

Q = m × c ×ΔT

T = 52.0°C - 12.0°C

= 40°C

M = 21 × 10²³grams

Q = 75.0 joules

C = Q / M × ΔT

C =  75 J /21 × 10²³grams  × 40.0

C = 3.5 × 10-²³ × 40× 10²³

C = 142.8× 10²³ J/gºC

Thus, the specific heat of lead is 142.8× 10²³ J/gºC.

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Answer: First one is slump, then mudflow, then landslide.

Explanation:

Just got it right on e2020

Answer:

First one is slump, then mudflow, then landslide.

Explanation:

plz give me a Brainliest

The enantiomeric excess is the difference between the measured specific rotation and the literature value. In this case, the enantiomeric excess is -17.1°.

The enantiomeric excess (EE) is a measure of the purity of a chiral compound. It represents the difference in concentration between the two enantiomers in a mixture. To calculate the enantiomeric excess, you need to compare the measured specific rotation with the literature value.

In this case, the literature value of the specific rotation is -59.8°, and the measured specific rotation is -42.7°. The difference between these two values will give us the enantiomeric excess.

To find the enantiomeric excess, we subtract the measured specific rotation from the literature value:
EE = Literature value - Measured value

EE = -59.8° - (-42.7°)
EE = -59.8° + 42.7°
EE = -17.1°

The enantiomeric excess of the compound with a measured specific rotation of -42.7° is -17.1°.

This means that there is an excess of one enantiomer over the other, with the excess enantiomer having a specific rotation of -17.1°.

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Answer:

If there is a decrease in the amount of carbon dioxide or methane, the amount of energy leaving the Earth system increases, so less energy enters than exits. When less energy enters than exits, Earth's surface absorbs less energy.

Explanation:

Nitrate and phosphate pollution in water bodies has an overall deleterious effect on water bodies.

Nitrates and phosphates are inorganic compounds. Many detergents are composed of phosphates which commonly serves as a cleaning agent. Also, farmlands are important sources of nitrate and phosphates

Untreated sewage and surface runoff often find their way into water bodies. When this happens, the nitrates and phosphates present from these sources cause rapid growth of algae. This is called eutrophication.

Rapid death of these algae increases the organic load of water and largely decreases the oxygen content of water leading to the appearance of a dead lake.

Hence nitrate and phosphate pollution in water bodies has an overall deleterious effect on water bodies.

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Answer:

Intraspecific competition examples,

Interspecific competition examples,

and what causes it to happen. Skip to the bottom for shortest answer.

But why does this happen? ↓

This competition happens because of limiting factors in the ecosystem, and general competition. Animals compete for their food because they need this food to survive. If they do not compete for the food, the other animal will get the food and the opposing animal will be left hungry. These are the main reasons why animals will compete for their resources.

In conclusion,

In a short sum, competition happens because animals need food, and when they can't get food, they compete.

Answer: They are non-reactive and don't conform with other elements to form compounds. Because they are non-reactive, they don't corrode easily.

Explanation:

The  properties of gold and platinum  which make these metals desirable for jewelry is due to their electronic configuration due to which they are non-reactive and do not corrode easily.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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Answer:

Option 2 is correct = CH₃

Explanation:

Empirical formula:

It is the simplest formula gives the ratio of atoms of different elements in small whole number .

For example:

C₂H₆

The simplest small whole number for C₂ is one and H₆ is 3. Thus empirical formula is CH₃.

Other options are incorrect.

Some more examples:

S₂O₂

The simples positive number for S and O is 1, thus its empirical formula is SO. The 1 is usually not written with symbol in formula.

Answer:

non polar molecules

Explanation:

Ethyl alcohol will dissolve in water in all proportions because the polar molecules interact with each other freely. In contrast, gasoline is a nonpolar molecule.  hope that helped...

Option c) NH4Cl will hydrolyze when dissolved in water.

Hydrolysis is a chemical reaction that occurs when a salt reacts with water, resulting in the formation of an acidic or basic solution. In this case, when NH4Cl (ammonium chloride) is dissolved in water, it undergoes hydrolysis.

The ammonium ion (NH4+) is the conjugate acid of ammonia (NH3), which is a weak base. When NH4Cl dissociates in water, the ammonium ion reacts with water to form NH3 and H3O+ (hydronium ion). This process is called hydrolysis.

NH4+ (aq) + H2O (l) ↔ NH3 (aq) + H3O+ (aq)

The formation of NH3 leads to an increase in the concentration of hydroxide ions (OH-) in the solution, making it slightly basic. At the same time, the presence of H3O+ ions makes the solution slightly acidic. Therefore, the hydrolysis of NH4Cl results in a slightly acidic and slightly basic solution.

In contrast, salts like NaCl and KCl do not undergo hydrolysis when dissolved in water because they consist of cations (Na+ and K+) and anions (Cl-) that do not react with water to form acidic or basic species.

Na2SO4 (sodium sulfate) is also an example of a salt that does not undergo hydrolysis. The sulfate ion (SO42-) does not react with water to form acidic or basic species, so the solution remains neutral.

Therefore, among the given options, only NH4Cl undergoes hydrolysis when dissolved in water.

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The question is incomplete. Find the full content below:

Which one of the following salts when dissolved in water will hydrolyse?

a) NaCl

b) KCl

c) NH4Cl

d)Na2SO4

Answer:

que se yohdhdhdjdjudbdudbudbff

Answer:

0.02 M

Explanation:

Given data:

Mass of sodium carbonate = 1.8 g

Volume of water = 862 cm³ (862/1000 = 0.862 L)

Concentration = ?

Solution:

Formula:

Concentration  = number of moles / volume in L

Number of moles of sodium carbonate:

Number of moles = mass/molar mass

Number of moles = 1.8 g/ 106 g/mol

Number of moles = 0.02 mol

Concentration:

c = 0.02 mol / 0.862 L

c = 0.02 M

Answer:

The new temperature of the nitrogen gas is 516.8 K or 243.8 C.

Explanation:

Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

Gay-Lussac's law can be expressed mathematically as follows:

\(\frac{P}{T} =k\)

Where P = pressure, T = temperature, K = Constant

You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and at a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:

\(\frac{P1}{T1} =\frac{P2}{T2}\)

In this case:

Replacing:

\(\frac{2 atm}{323 K} =\frac{3.2 atm}{T2}\)

Solving:

\(T2*\frac{2 atm}{323 K} =3.2 atm\)

\(T2=3.2 atm*\frac{323 K}{2 atm}\)

T2= 516.8 K= 243.8 C

The new temperature of the nitrogen gas is 516.8 K or 243.8 C.

Answer:

B. Intermolecular forces are hard to overcome

Explanation:

A high boiling point indicates greater inter molecular forces between the molecules of the substance. Inter molecular forces is the force of attraction between the molecules of the substance, which has to be overcome or broken before the substance boils. Example, when water boils, the water molecule (H₂O) will be broken into hydrogen molecule and oxygen molecule.

Therefore, a high boiling point temperature indicates that intermolecular forces of the substance are hard to overcome.

B. Intermolecular forces are hard to overcome

Answer:

b

Explanation:

Answer:

28 years

Explanation:

the information is literally in the question.

The expression that can be used to find the value of B in square inches for this cylinder is A) π(8.3)2.

The combined area of a cylinder's curving surface and its two circular bases is known as the cylinder's area. The surface area of a cylinder is determined using the following formula:

A = 2πrh + 2πr²

We need to find the expression to calculate the area of the base of the given cylinder, which has dimensions r = 8.3 meters and h = 11.1 meters.

The formula for the area of the base of a cylinder is B = πr², where r is the radius of the base of the cylinder.

So, substituting the given value of r, we get:

B = π(8.3) ²

Simplifying this expression, we get:

B = π(68.89)

B = 68.89π.

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Answer:

See below

Explanation:

The electoral college ensures that the most populated states can't always pick the next president.  States that have the most population would be able to skew the elections by cancelling out several other less populated state's voters.  One large city could cancel out every vote from the state of Rhode Island.

With the electoral college, each state has a given number of votes to cast for a president.  Some states can split their college votes while others cast all votes for the same candidate.

If you look at Pennsylvania in 2020 as an example, they have 20 electoral votes.  Pennsylvania does not split their votes so all go to just one candidate.  In the measurement of votes, it might show that candidate A got 51% of the votes and candidate B got 49%.  The 20 electoral votes would all go to candidate A and candidate B gets nothing.  Candidate B may have gotten millions of individual votes within the state but that no longer matters.  Candidate A won the state so gets all 20 electoral votes.  If the country went by the individual vote, Candidate B would keep all those votes he got from the 2 or 3 large cities in Pennsylvania.

It would be easy to see that if you only counted the individual votes (called the popular vote), a candidate could compile more votes from all of the states even though the candidate did not win that state by the majority vote.  The electoral college makes sure that a candidate cannot carry those votes from the state that they lost.

If elections were based on this popular vote, then most of the states with small populations would barely affect the outcome of an election.  The popularity vote would ensure that the states with the largest populated cities would always control who gets elected.

It would especially be detrimental in todays age since most large cities are almost always voting for just one party.

Calcium-40 would be expected to be particularly stable.

A nuclide is a type of atom distinguished by the number of protons and neutrons in its nucleus, which approximates the nuclide's mass. The number associated with the nuclide's name is known as its mass number (the total number of protons and neutrons in the nucleus).

The terms isotope and nuclide are closely related. When we talk about isotopes, we're talking about a group of nuclides that have the same number of protons. The term nuclide refers to a nuclear species that may or may not be isotopes of a single element. A nuclide is an atom with a specific number of protons and neutrons in its nucleus, such as carbon-13, which has 6 protons and 7 neutrons.

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Answer:

C-Electrical energy changed into mechanical energy

Explanation:

Energy, according to the law of conservation of energy, is said to neither be created or lost but only interchangeable from one form to another. Energy exists in different forms. The process by which one form of energy changes to another is called TRANSFORMATION of energy.

However, certain household appliances or devices bring about this transformation of energy. For example, in a case where Tony turns a fan on when his room becomes uncomfortably hot. The fan uses an electric source to get powered on, which then facilitates the blades of the fan to move fast in order to bring about a cool atmosphere.

The fan converts ELECTRICAL energy (electric source) into MECHANICAL energy (moving energy).

Answer:

5

Explanation: