A combustion reaction is represented by __________________.

A. AB + C yields CB + A
B. A + B yields AB
C. Fuel + oxygen yields carbon dioxide + water
D. AB yields A + B

\(\huge{\bold{\orange{\underline{ Solution }}}}\)

A harmonic wave on a string is described by

\(\sf{ Y( x, t) = 0.1 sin(300t + 0.01x + π/3)}\)

Equation for travelling wave :-

\(\sf{ Y( x, t) = Asin(ωt + kx + Φ)...eq(1)}\)

Equation for stationary wave :-

\(\sf{ Y( x, t) = Acos(ωt - kx )...eq(2)}\)

Given equation for wave :-

\(\sf{ Y( x, t) = 0.1 \:sin(300t + 0.01x + π/3)...eq(3)}\)

On comparing eq(1) , (2) and (3)

We can conclude that, Given wave represent travelling wave.

From solution 1 , We can say that,

\(\sf{ Y( x, t) = 0.1 \: sin(300t + 0.01x + π/3).}\)

It is travelling from right to left direction

Hence, The direction of its propagation is right to left that is towards +x direction.

Here, We have to find the wave period

We know that,

Wave period = wavelength / velocity

Wave equation :-

\(\sf{ Y( x, t) = 0.1 \:sin(300t + 0.01x + π/3).}\)

We know that,

\(\sf{v =}{\sf{\dfrac{ ω}{2π}}}{\sf{\: and\:}}{\sf{ λ =}}{\sf{\dfrac{ 2π}{k}}}\)

Subsitute the required values,

\(\sf{ wave\: period =}{\sf{\dfrac{ 2π/k}{ω/2π }}}\)

\(\sf{ wave \:period = }{\sf{\dfrac{k}{ω}}}\)

\(\sf{ wave\: period =}{\sf{\dfrac{ 0.01}{300}}}\)

\(\sf{ wave\: period = 0.000033\: s}\)

The wavelength of given wave

\(\bold{ λ = }{\bold{\dfrac{2π}{k}}}\)

Subsitute the required values,

\(\sf{ λ = }{\sf{\dfrac{2 × 3.14 }{0.01}}}\)

\(\sf{ λ = }{\sf{\dfrac{6.28}{0.01}}}\)

\(\sf{ λ = 628 \: cm }\)

We have wave equation

\(\sf{ Y( x, t) = 0.1 sin(300t + 0.01x + π/3).}\)

Travelling wave equation :-

\(\sf{ Y( x, t) = A\:sin(ωt + kx + Φ)...eq(1)}\)

Therefore,

Amplitude of the wave particle

\(\sf{ A = 0.1 \: cm}\)

Hence, The amplitude of the particle is 0.1 cm

The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

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Answer:

A 220 N

Explanation:

it’s the only one not marked out on the photo. Hope this helps!

In the long-wavelength limit (k → 0), the fluctuation-compressibility relation for the structure factor, s(k), can be expressed as:

s(k) = ρ k_BT χ(k)

To derive the fluctuation-compressibility relation in the long-wavelength limit, we start with the definition of the structure factor:

s(k) = 1 + ρ ∫ [g(r) - 1] exp(-i k ⋅ r) d^3r

where g(r) is the pair correlation function.

In the long-wavelength limit (k → 0), we can expand the exponential term as:

exp(-i k ⋅ r) ≈ 1 - i k ⋅ r

Substituting this approximation into the structure factor equation and neglecting higher-order terms in k, we have:

s(k) ≈ 1 + ρ ∫ [g(r) - 1] (1 - i k ⋅ r) d^3r

Expanding the integrand, we get:

s(k) ≈ 1 + ρ ∫ [g(r) - 1] d^3r - i ρ k ⋅ ∫ [g(r) - 1] r d^3r

The first term on the right-hand side is just the number density ρ, and the second term can be related to the isothermal compressibility, χ(k), using the definition:

χ(k) = -ρ^(-1) ∫ [g(r) - 1] r d^3r

Therefore, we can rewrite the expression for s(k) as:

s(k) ≈ 1 + ρ - i ρ k ⋅ χ(k)

Finally, multiplying both sides by ρ k_BT, where k_BT is the thermal energy, we obtain the fluctuation-compressibility relation in the long-wavelength limit:

s(k) ≈ ρ k_BT - i ρ^2 k_BT k ⋅ χ(k)

The fluctuation-compressibility relation for the k → 0 (long-wavelength) limit of s(k) is given by the equation:

s(k) = ρ k_BT χ(k)

where ρ is the number density of particles, k_B is the Boltzmann constant, T is the temperature, and χ(k) is the isothermal compressibility.

This relation relates the structure factor to the isothermal compressibility and provides insight into the behavior of fluctuations in a system at large scales.

It is commonly used in the study of condensed matter physics and statistical mechanics.

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Answer: 7.51

Explanation: Acellus

The charges on each plate are acquired is 4.403×10⁻¹⁹ C if the two plates are separated by 2.42×10⁻⁵ m with an area of 8.22×10⁻⁴ m².

It is defined as the energy required in moving the unit's positive charge from one point to another. It is obtained from the ratio of the charge and distance. The unit of electric potential is Volt(V)

The electric potential between the parallel plates is obtained from the product of the Electric field and the distance of separation between the plates.

From the given,

Area of the plates, A = 8.22×10⁻⁴ m²

Distance of separation (d) = 2.42×10⁻⁵m

Voltage (V) = 25 V

Charge on the plates (Q) =?

The electric potential V = E/d, where E is the electric field and the unit of an electric field is N/C. d is the distance of separation of the plates. The electric field is the ratio of charge and area.

Electric field E = Q/ (A×ε), where A is the area of the parallel plates, and Q is the charge in the conductor. ε is permittivity in free space and is equal to 8.845×10⁻¹²C²/N.m².

The electric potential V = E/d

V = (Q/ (A×ε)) / d

  = Q / (A ×ε× d)

Q =  V×A×ε× d

   = 25×8.22×10⁻⁴×2.42×10⁻⁵×8.845×10⁻¹²

   = 4,403 × 10⁻²¹

   = 4.4 ×10⁻¹⁹C

The charge accumulated on the plates is 4.4 ×10⁻¹⁹C.

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Answer:

C. The amount of matter it has

The hammer falls 325 feet in 5 seconds.

a) Given s(t) = 2t² + 6t, we can calculate the velocity by finding the derivative of s(t) with respect to t.

Therefore,v(t) = s'(t) = 4t + 6.

b) Similarly, we can calculate the acceleration by finding the derivative of v(t) with respect to t.a(t) = v'(t) = 4.c)

We are given t = 2.

Substituting t = 2 in v(t), we getv(2) = 4(2) + 6 = 14

Substituting t = 2 in a(t), we geta(2) = 4

The velocity of the object when t = 2 is 14 units and the acceleration when t = 2 is 4 units.

a) The distance fallen by the hammer in 5 seconds can be calculated using the formula for s(t) as:

s(5) = 13(5²)

      = 325 feet.

Therefore, In 5 seconds, the hammer drops 325 feet.

b) We can find the velocity of the hammer at t = 5 seconds by finding the derivative of s(t) with respect to t.

v(t) = s'(t)

     = 26t

Therefore,v(5) = 26(5)

                              = 130 feet per second.

c) We can find the acceleration of the hammer at t = 5 seconds by finding the derivative of v(t) with respect to t.

a(t) = v'(t)

     = 26

The acceleration of the hammer at t = 5 seconds is 26 units.

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The intended receiver did not receive the ball since the ball travelled a shorter distance.

The time of motion of the ball is calculated by applying the following formula as shown below.

h = vt + ¹/₂gt²

where;

1.3 = ( 15.2 x sin40 )t  +   ¹/₂ ( 9.8 )(t²)

1.3 = 9.8t  +  4.9t²

4.9t² + 9.8t - 1.3 = 0

solve the quadratic equation suing formula method;

t = 0.13 second

The horizontal distance of the ball is calculated as;

d = Vₓt

d = ( 15.2 x cos 40) x 0.13

d = 1.51 m

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Answer:

Your answer is: D) Tinea Pedis

Explanation:

Hope this helped : )

Answer:

459.195 (N).

Explanation:

in order to calculate the required value of the Fₓ:

Fₓ=F*cos(37°); Fₓ=575*0.7986≈459.195 (N).

For more info see the attachment (note, the required force Fₓ is marked with red colour).

Answer::27 km per hour West + 17 km per hour North

Explanation:

:27 km per hour West + 17 km per hour North

he or she is right good jod

The velocity for the trip would be 31 km per hour, therefore the correct answer is option B.

An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.

As given in the problem, on a trip you travel at a constant speed of 50 kilometers per hour North for 1 hour. Then you turn West and travel at a constant speed of 40 kilometers per hour for 2 hours.

The final displacement of the trip = √(50² + 80²)

                                                         = 94.34 kilometers

The velocity of the trip = total displacement of the trip / time period

                                      =94.34 kilometers / 3

                                      = 31 kilometers per hour

Thus, the velocity of the trip would be 31 kilometers per hour.

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Answer:

Frequency = 25 Hz

Time period = T

we know that ,

frequency = 1/ T

25 = 1/T

25 T = 1

T = 1/25

= 0.04 sec

Explanation:

Answer: 0.1

Explanation: The wire size is very important when making decisions on the wiring of any equipment,house and other things. It has also been found that the size of the wire determines the load that can be allowed through it.

The right wire size application chart should always be considered before selecting the wiring diagram or system for any building or equipment as it can help to determine the amount of voltage that can be effectively carried through it.

Answer:

As all electromagnetic radiation, microwaves travel at the speed of light.

AGREE

The magnitude of force exerted on the woman by the floor when the lift is accelerating is 150 Newton.

Given the following data:

To calculate the force exerted on the woman by the floor when the lift is accelerating, we would apply Newton's Second Law of Motion:

Mathematically, Newton's Second Law of Motion is given by this formula;

\(Force = mass \times acceleration\)

Substituting the given parameters into the formula, we have;

\(Force = 60 \times 2.5\)

Force = 150 Newton.

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Answer:

jump higher

Explanation:

this is due to the Moon's surface gravity being weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

In first scenario, the electric field vector's magnitude would be halved. In second scenario, the electric field vector's magnitude at point P would be doubled.

Charge and charge density are two concepts of electricity, and the following are the differences between them:

Charge: Charge is a property of matter that causes it to experience electrical and magnetic phenomena. It is the fundamental quantity that is responsible for electric phenomena. The SI unit of charge is Coulomb (C), and its symbol is ‘Q’. The charge of an object can be positive or negative or neutral. The charge on an object is measured using an electrostatic balance or an electroscope.

Charge Density: Charge density refers to the amount of charge per unit volume or unit area of a substance. Charge density is the amount of charge per unit length on a given rod. Its SI unit is Coulomb per meter cubed (C/m³). The charge density on an object can be either uniform or non-uniform, i.e., it may be constant over the surface area or may vary throughout it. An electric field vector E is produced by a rod carrying a charge distributed uniformly over the length of the rod. Let the magnitude of the charge be Q. Now, let us consider the following scenarios:

a) How does the field change if rod length is doubled using the same amount of charge?

Assume the point P is still located distance d above the left end of the rod. In this situation, if the rod's length is doubled, the charge will remain the same. Since the charge is distributed uniformly, the charge per unit length would be half of the initial value.

Therefore, the electric field vector's magnitude would be halved.

b) How does the field change if rod length is doubled using the same amount of charge density? Assume the point P is still located distance d above the left end of the rod.In this situation, if the rod's length is doubled, the charge density will remain constant. So, the total charge on the rod will be doubled, and the charge per unit length will remain constant.

As a result, the electric field vector's magnitude at point P would be doubled.

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The leaking gas is Neon.

Your question is not complete, kindly check the image uploaded for the remaining part of the question.

The gases commonly used in fluorescent light bulbs include Hydrogen, Helium, Neon, Argon, Krypton, Xenon.

Fluorescent lamps emit light of wavelength between 400 nm to 700 nm.

In the given chart the suspected gases in the bulb include;

Hydrogen (H), maximum wavelength (nm) = 410, 434, 86, 656

Helium (He), maximum wavelength, (nm) = 438, 443, 7, 471, 42, 501, 50, 587, 66.

Neon, (Ne), maximum wavelength, (nm) = 421, 423, 425, 436,

The leaking gas is determined as follows;

Thus, the leaking gas is Neon.

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Answer:

Explanation:

give the below person branly

Water is more dense in its solid state.

This statement is true.

Answer: what is it asking

Explanation:

Answer:

i would say the third one

Explanation:

may i be brainliest?

Answer:

My believe the answer is

A.) or B.)

Explanation:

Here is why I think A is the answer.

If we use the process of elimination, it would look like this,

a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.

This makes sense because we all know in winter the weather is very cold and freezing.

b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.

I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.

c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.

This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.

d) Porque la temperatura del aire es igual a la temperatura del cuerpo.

This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.

Answer:

A solution is always transparent, light passes through with no scattering from solute particles which are molecule in size. ... A colloid is intermediate between a solution and a suspension. While a suspension will separate out a colloid will not. Colloids can be distinguished from solutions using the Tyndall effect.

Explanation:

When a suspension is allowed to stand, the particles separate. A colloid is a substance that exists between a solution and a suspension. A colloid will not separate from a suspension. The Tyndall effect can be used to distinguish colloids from solutions.

In chemistry, a suspension is a heterogeneous mixture of a fluid containing solid particles large enough to settle.

A suspension is a complex blend in which the solute particles do not disintegrate but rather become suspended throughout the bulk of the solvent and float freely in the medium.

A solution is a uniform mixture of one or more dissolved solutes in a solvent.

A solvent is a substance that dissolves a solute to produce a homogeneous mixture. The substance that dissolves in a solvent to form a homogeneous mixture is referred to as a solute.

A colloid is a mixture in which one substance is suspended throughout another, consisting of microscopically dispersed insoluble particles.

Larger particles in a suspension settle out, block or scatter light, and can be filtered out.

A colloid contains particles that are between the sizes of a solution and a colloid; they are not heavy enough to settle or be filtered out, but they still scatter light.

Thus, this way these three are related.

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If the velocity-time equation for a golf cart is v = (1 m/s) + (-0.5 m/s)t , then the initial velocity of the cart would be 1 m / s and the acceleration of the cart would be - 0.5 m / s² .

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As given in the problem the velocity-time equation for a golf cart is

v = (1 m/s) + (-0.5 m/s)t ,

The initial velocity of the cart at t = 0  would be 1 m / s.

By differentiating the given equation of the velocity,

The acceleration of the cart would be -0.5 m / s.

Thus, the initial velocity would be 1 m / s and the acceleration would be  -0.5 m / s.

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The time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.

The cooling law is given by:

$$\frac{dQ}{dt}=-k(T-T_0)$$

where Q is the heat in the object, t is the time taken, T is the temperature of the object at time t, T0 is the temperature of the environment and k is a constant known as the cooling constant.

We need to find the time it takes for the coffee to reach a drinking temperature of 73°C given that its initial temperature is 93°C.

Therefore, we need to find the time it takes for the coffee to cool down from 93°C to 73°C when placed in a room temperature of 18°C.

Let’s assume that the heat energy that is lost by the coffee is equal to the heat energy gained by the environment. We can express this as:

dQ = - dQ where dQ is the heat energy gained by the environment.

We can substitute dQ with C(T-T0) where C is the specific heat capacity of the object.

We can rearrange the equation as follows:

$$-\frac{dQ}{dt}=k(T-T_0)$$

$$-\frac{d}{dt}C(T-T_0)=k(T-T_0)$$

$$\frac{d}{dt}T=-k(T-T_0)$$

The differential equation above can be solved using separation of variables as follows:

$$\frac{d}{dt}\ln(T-T_0)=-k$$

$$\ln(T-T_0)=-kt+c_1$$

$$T-T_0=e^{-kt+c_1}$$

$$T=T_0+Ce^{-kt}$$

where C = e^(c1).

We can now use the values given to find the specific value of C which is the temperature difference when t=0, that is, the temperature difference between the initial temperature of the coffee and the room temperature.

$$T=T_0+Ce^{-kt}$$

$$73=18+C\cdot e^{-0.09t}$$

$$55=C\cdot e^{-0.09t}$$

$$C=55e^{0.09t}$$

$$T=18+55e^{0.09t}$$

We can now solve for the value of t when T=93 as follows:

$$93=18+55e^{0.09t}$$

$$e^{0.09t}=\frac{93-18}{55}$$

$$e^{0.09t}=1.3636$$

$$t=\frac{\ln(1.3636)}{0.09}$$

Using a calculator, we can find that the time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.

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Answer:

Parisian Scoop

Pocket thermometer

Pasty Bag

sifter

chinois

Rolling Pin

Immersion Blender

Chocolate tempering machine

Robot Coupe

Steam Jacketed kettle

marble table

commercial dough sheeter

Explanation:

Really it could differ dependent on model variety of each item

Answer:

Rock Formation

Explanation:

If Earth did not have internal energy, the carbon cycle process that would not be possible is rock formation. So, the correct option is D.

The carbon cycle is described as a series of biogeochemical processes through which atoms of carbon or carbon compounds are fixed and utilized within the environment, moving carbon from the atmosphere to the Earth and back against which is carried into the atmosphere.

The main processes associated with carbon cycle include the following:

The formation of rock requires only that the Earth have enough internal energy to cause the movement of material around the core and mantle to cause slow but significant changes within the Earth's crust.

Therefore, the correct option is D

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As the velocity of a stream carrying a mixture of particles decreases, the heaviest particles will most likely be deposited first. This phenomenon is known as sedimentation.

The process of sedimentation separates particles of different sizes and densities from a mixture by allowing them to settle at different rates due to gravity. The heavier particles settle faster than lighter ones. Therefore, they are the first to be deposited.Sedimentation can occur naturally or artificially. For example, in a river, sedimentation can occur naturally due to changes in water flow and velocity. Artificial sedimentation can be used in water treatment plants to remove impurities from water

The heaviest particles will most likely be deposited first as the velocity of a stream carrying a mixture of particles decreases.Explanation: This is due to the process of sedimentation, which separates particles of different sizes and densities from a mixture by allowing them to settle at different rates due to gravity. The heavier particles settle faster than lighter ones, and hence they are the first to be deposited.

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Waves break almost parallel to shore due to a process called wave refraction, which causes the wave fronts to gradually align themselves parallel to the coastline as they approach shore. This ensures the energy of the waves is distributed evenly along the shore.

When waves are generated in the open ocean, they typically approach the coastline at various angles. As the waves come closer to the shore, the depth of the water decreases and the speed of the waves is affected. The portion of the wave that encounters shallower water first starts to slow down, while the part of the wave that is still in deeper water continues at a faster speed. This causes the wave to bend and its crests to become more parallel to the shoreline.

Wave refraction helps to distribute the energy of the waves along the entire coastline, minimizing the erosive impact on any single point of the shore. By breaking parallel to the shore, waves are also able to deposit sediments more evenly along the coastline, which contributes to the formation and maintenance of various coastal landforms, such as beaches and sandbars. Overall, the process of wave refraction plays a crucial role in shaping the appearance and stability of coastal areas.

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According to Newton’s first law of motion, an object at rest will begin to move, when an unbalanced force acts upon it.

option B is the correct answer.

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue in motion with a constant velocity unless acted upon by an external force.

In other words, an object will maintain its state of motion (whether it is at rest or moving in a straight line at a constant speed) unless a force acts upon it.

Thus, according to Newton’s first law of motion, an object at rest will begin to move, when an unbalanced force acts upon it.

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Answer:

its B

Explanation: