An aqueous solution with a ph of 2.00 is diluted from 1.0 l to 3.0 l. what is the ph of the diluted solution?

The speed is the distance covered by an object at a particular time. The average cycling speed of Liam is 2.91667 meters/sec.

The speed is the distance covered by an object at a particular time. Therefore, it is the ratio of distance and time.

Speed = Distance Covered / Time taken

Given that Liam rides his bicycle to the near park that is 1.75 kilometers away from his home and it takes Liam 10 minutes to reach the park. Therefore, we can write,

Distance covered by Liam = 1.75 kilometers

                                            = 1.75 × 1000 meter

                                            = 1750 meters

Time taken by Liam = 10 minutes

                                 = 10 × 60 seconds

                                 = 600 seconds

Now, Liam's average cycling speed can be written as,

Liam's average cycling speed

 = Distance covered by Liam/Time taken by Liam

 = 1750 meters / 600 seconds

 = 2.91667 meters/seconds

Hence, the average cycling speed of Liam is 2.91667 meters/sec.

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Answer:

A metamorphic rock

Explanation:

The power does the razor consume as it is ruined 160 watt.

From joules law of heating, current flows through a resistor, converts a part of electric energy into heat energy.

The rate at which the power dissipated through a resistor is,

[tex]P = V^2/R[/tex]

Here,V is the applied voltage or voltage from source Ris the resistance of the resistor, Resistance of the device Ac razor)is,

[tex]R = V^2/P[/tex]

[tex]= (120)^2/ 40[/tex]

= 14400/40

= 360 ohm

NOW, the input voltage is change to V1, new power consumed by the razor is

[tex]P_1 = V_1^2/R[/tex]

[tex]= (240)^2/360[/tex]

= 57,600/360

=160 watt

Joule's law is the e rate at which heat is produced in a conductor is directly proportional to the square f the current provided is resistance is constant.

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The resultant voltage is V=23.9mV.

Potential energy is a type of energy, and when differences are taken into account, the definition of potential is potential energy (or potential energy difference) per unit charge or V=E/Q. That matches your equation exactly. The amount of electrical charge transmitted by a potential difference of V volts. Quantity of electric charge (coulombs) x potential difference equals the energy transmitted in joules (volts) Q = electrical charge transported (C), V = p.d., E = energy transfer in joules (J), and V = E/Q. (V)

E=41mj

q=1.71c

The resultant voltage,

E = Q×V

[tex]V = (41\times10^{-3}) / 1.71[/tex]

V = 0.02397

V = 23.9mV

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Increasing the frequency of supply will decrease the current through the inductor.

When an inductor is connected to an ac supply, it develops a resistance known as inductive reactance.

The inductive resistance/reactance(XL) is given by the following formula

XL = ω X L

As  ω =2πf

XL = 2πf x L

Where ω is the angular frequency and f is the frequency of the AC supply.

When the frequency of AC supply is increased i.e, f is increased, the inductive reactance (XL) is also increased because it is directly proportional to the frequency.

As the resistance of the inductor is increased, the current through it will decrease.

Thus, increasing the frequency of supply will decrease the current through the inductor.

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Answer: 4.5 mL

Explanation:

1000 mL=1 L

0.0045L * 1000 mL/1 L=

0.0045 * 1000/1=

0.0045 * 1000=4.5 mL

Increase in wavelength of light leads to decrease in the radiation energy.

Radiation energy is inversely proportional to the wavelength of light. Thus, an increase in the wavelength of light will decrease the radiation energy and a decrease in the wavelength of light will increase the radiation energy.

Radiation energy is calculated by the formula:

E = hυ

where,

E is the radiation energy

h is the Planck’s constant

υ is the frequency

But,

υ = c / λ

where,

c is the speed light travels at in vacuum

λ is the wavelength of light

Therefore,

E = hc/λ

And thus, radiation energy and wavelength of light are inversely proportional.

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Answer:

V = Δ S / Δ t            speed of object where change in position is displacement

Since V is represented by the slope, a greater slope indicates a "greater speed"

Critical angle. Angle of refraction from. Diamond to hear is 90 degree.

Using Snell's law.

[tex]\frac{sini}{sin90} =\frac{1}{n} \\ or, n=2.42[/tex] index of refraction

Refraction is the term for the bending of light as it passes through transparent materials (it also occurs with sound, water, and other waves).

We are able to create lenses, magnifying glasses, prisms, and rainbows because to this bending caused by refraction. Even our eyes rely on this light bending. We wouldn't be able to concentrate light onto our retina without refraction.

Two factors determine how much bend occurs:

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The semi - major axis is a = 2.43 A.U

The semi-major axis, a, is half of the longest diameter of an ellipse. Together with the semi-minor axis , b, and eccentricity, e, it forms a set of related values that completely describe the shape of an ellipse.

Now,

We have to find the semi major axis which we represents as "a".

Aphelion = a( 1+e ) = 1.5 AU.

Perihelion = a( 1−e )= 3.36 AU .

a = ( 1.5 + 3.36 )/2 AU = 2.43 AU .

e = 3.36 - 1.5 /2a

= 1.86 /2 ( 2.43 ) = 1.86 /4.86  

=0.3827.

The semi - major axis is a = 2.43 A.U

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Answer:

1what is the first who derived car

Answer:

16.55 km

Explanation:

to find the displacement use the Pythagorean theorem to find the distance between the starting position and the ending position

15 becomes 225 when squared

7 is 49 when squared

225+49=274

sqrt of 274 is 16.55

The average acceleration is a = 1.3158 m/s²

The average acceleration.

V₀ = 2.0 m/s,

V = 4.5 m/s,

t = 1.9 s,

a =?

a = V-V₀/t

a = 4.5 m/s - 2.0 m/s / 1.9 s

a = 2.5 m/s /1.9 s

a = 1.3158 m/s²

∴ The average acceleration is a = 1.3158 m/s²

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The temperature to increase from to 29.75℃.

When heat is transferred from your body by moving air, convection takes place. The air will rise if it absorbs your heat and is colder than the environment. Cooler air flows in to take its place and absorb more of your warmth as the warmed air rising around you increases. You feel colder as this air flows more quickly.

When absorbed by a substance, heat results  inter-particle bonds to weaken and break which result  to a change of state (solid to liquid for example). Heat causing a phase change is NOT sufficient to cause an increase in temperature

amount of heat absorbed ,

q = m* c* ΔT

specific heat of water is = 4.186J/g ⁰C

ΔT = 7.5⁰C

mass of water = 948.0g

there for,

q =  948.0g *  7.5⁰C * 4.186J/g ⁰C

q = 29.762 KJ

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The angle in radians between the central maximum  is 0.04 .

The central maximum is the brightest central portion of the diffraction pattern. The central maximum is the widest and has the maximum intensity.

When the crest of a wave coincides with the crest of another wave then that interference is called the bright fringe. The same thing happens with the dark fringe also, when the trough of one wave coincides with the trough of another wave then results in dark fringes.

Formula used:

nλ = d sin(θ)

Given,

n = 1, and d = 25λ, so:

λ = 25λsin(θ)

on Dividing through by λ, and we get:

1 = 25sin(θ)

1/25 = sin(θ)

θ = 2.29 degrees = 0.04 radians.

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The wavelength of the line corresponding to n=n= 4 in the Balmer series is 486 nm .

A periodic wave's wavelength is its spatial period, or the length over which its shape repeats. A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles.

This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm). The distance between two successive crests or troughs of a wave is known as its wavelength. It is measured in the wave's direction.

Expression for the Balmer series to discover the wavelength of the spectral line is as follows:

1 / λ = R [tex](1/2^{2}-1/n^{2} )[/tex]

Where λ stands for the wavelength, R stands for the Rydberg constant, and n is the integral value (4 here → the Fourth level)

Substitute 1.097 x 10⁷ m⁻¹ for R and 4 for n in the above equation

1 / λ = (1.097 x 10⁷ m⁻¹) [tex](1/2^{2}-1/4^{2} )[/tex]

 = 0.20568 x 10⁷ m⁻¹

λ = 4.86 x 10⁻⁷ m

since 1 m = 10⁹ nm

λ = 486 nm

Hence, The wavelength of the line corresponding to n=n= 4 in the Balmer series is 486 nm .

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The corresponding frequency of a microwave radiation with a wavelength of 13.4mm is 2.34 x 10¹⁰hz.

Microwaves are electromagnetic radiations that fall between infrared radiation and radio waves in the electromagnetic spectrum. The frequency of microwaves range between 300Mhz to 300Ghz, and the wavelength ranges between 1mm to 30cm. Microwaves are used in communication and cooking.

Just like all electromagnetic waves, the wavelength of microwave is inversely proportional to its frequency, meaning that the longer the wavelength, the smaller the frequency. The relationship between wavelength, frequency and velocity can be expressed in this formular:

                   v = f x λ

Where:

Since we are told to look for frequency in the question, we would make f the subject of the formular:

                     f = v/λ

The velocity of all electromagnetic waves is constant, 3 x 10⁸m/s. Since the unit of velocity is in meters per second, the unit of the wavelength will also have to be in meters, hence, we the wavelength divide by 1000, giving us 0.0134, putting these values into the equation:

                      f = 3 x 10⁸m/s/0.0134m

                      f = 2.34 x 10¹⁰hz

Therefore, the corresponding frequency of a radiation with a wavelength of 13.4mm is 2.34 x 10¹⁰hz.

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The density of wood is 118.095 gram/liter.

We need to know about the density to solve this problem. Density is a unit that measures how dense an object is. Density can be measured by dividing mass by volume. It can be written as

ρ = m / V

where ρ is density, m is mass and V is volume

From the question above, we know that

m = 62 grams

V = 0.525 liter

By substituting the following parameters, we can calculate the density

ρ = m / V

ρ = 62 / 0.525

ρ = 118.095 gram/liter

Hence, the density of wood is 118.095 gram/liter.

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A quasi-equilibrium process is a process during which a system never remains in equilibrium at all times is a - True statement

A quasi-equilibrium process is one in which a system is nearly in equilibrium at all times.

Numerous engineering procedures can roughly be described as quasi-equilibrium processes. When quasi-equilibrium processes are used instead of non-quasi-equilibrium processes, a device's work output is maximized and its work input is minimized.

An illustration of this is the quasi-static expansion of a mixture of hydrogen and oxygen gas, in which the system's volume changes so slowly that the pressure stays constant throughout the system at every instant of the process. A series of physical equilibrium states comprise this idealized process, which is characterized by infinite slowness.

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When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet exhibits retrograde motion.

Retrograde motion is the apparent change in movement of any planet in the sky. It is not real such that the planet doesn't make any movement physically in its orbit.

The planet just appears to be in a movement because the relative positions of that planet and our planet, Earth and how these two planets  move around the Sun.

Therefore, Retrograde motion is actually an illusion which is related to the movement of this Earth-based observer.

One familiar example occurs when an individual passes a car on a freeway, the car that passed appears to have moved backwards, relative to that individual.

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Varactors provide a tunable capacitance with the bias voltage across the varactor, a reverse biased diode, changing the capacitance of the diode. The applied bias voltage also changes the series resistance of the diode

The choke inductors provide a DC short and an RF opens

The resonator network is designed to be resonant at a frequency above the operating frequency. At the oscillation frequency, the resonator network must present an inductance to resonate with the capacitance of the active device in an oscillator. In addition, for oscillator stability, the effective inductance must have a particular derivative of admittance with respect to frequency.

The combination of the resonator and the active device forms an oscillator. The intersection of the active device and resonator loci selects the oscillation frequency of the oscillator. The oscillator presents a capacitance to the resonator and so the resonator must present an inductance to the active device

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If 4.71 l of nitrogen gas and 24.96 l of hydrogen gas were allowed to react, in total 16.616 L of ammonia could form.

The balanced reaction for this would be:

N2(g) + 3H2(g) → 2NH3(g)

assuming STP:

∴ V N2(g) = 4.71 L

∴ V H2(g) = 24.96 L

The ideal gas equation is stated as:

PV = RTn

∴ moles N2(g) = PV/RT

⇒ mol N2(g) = (1 atm) (4.71L)/ (0.082 atm.L/K.mol)(298 K)

⇒ mol N2(g) = 0.007 mol

∴ moles H2(g) = PV/RT

⇒ mol H2(g) = (1) (24.96) / (0.082) (298) = 1.021 mol (limit reagent)

∴ moles NH3(g) = (1.021 moles H2(g)) (2 moles NH3 / 3 mol H2) = 0.680 mol

∴ V NH3(g) = RTn/P

⇒ V NH3(g) = ((0.082 atm.L/K.mol)(298 K) (0.680 mol))/(1 atm)

⇒ V NH3(g) = 16.616 L

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The energy would be obtained if 44 g of carbon were irradiated is  5.8863 x 10^5 J.

Assume each carbon atom emits one photon. For each photon.

E=hc/lambda

Where h = Plank's constant

C = speed of light

E = (6.625×10^-34)×(3×10^8)/(7.45×10^-7)

E = 2.66819x10^-19 J

So the total energy emitted is

E = E1xn

E = (2.66819x10^-19)×(6.022x10^23)/ 1 mol of carbon atom

E = 5.8863 x 10^5 J

Black body radiation is a type of radiation in which a body is in thermodynamic equilibrium, emitted by a black body. It has a specific, continuous spectrum of wavelength. Photons are energy stored in bundles.

In above question,

Wavlength (lambda)=745nm = 7.45x10^-7m.

Mass of carbon = 44 gram

Assume each carbon atom emits one photon. For each photon.

E=hc/lambda

Where h = Plank's constant

C = speed of light

E = (6.625×10^-34)×(3×10^8)/(7.45×10^-7)

E = 2.66819x10^-19 J

So the total energy emitted is

E = E1xn

E = (2.66819x10^-19)×(6.022x10^23)/ 1 mol of carbon atom

E = 5.8863 x 10^5 J

Therefore, The energy would be obtained if 44 g of carbon were irradiated is  5.8863 x 10^5 J.

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The speed of raindrops hitting your face when thy fall vertically at 3m/s while you’re running horizontally at 4 m/s is 5 m/sec.

Consider one drop of rain falling vertically. The velocity  of the rain and the velocity of the man both  are taken as vectors.

The result of the above statement is the vector is sum.

Let us consider two vectors : a and b.

Then a and b are added.

The magnitude of the sum is the root of the sum of squares of the individual vectors.

We know that

a = 3

b = 4

On substituting the given values in the above equation, we get as

Underroot of 3^2 + 4^2 we get 25.

Therefore the square root of 25 is 5

Therefore, it hit fast your face is 5 m/s.

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For the expected output waveform from an ideal differentiator circuit having input waveform vin=1sin[(2)1000t] v, the expression can be stated as Vo(t) = -0.09424 cos(2π(1000)t)V.

A waveform is a typically graphic representation of a wave’s shape that describes its properties (such as frequency and amplitude).

Sinusoidal, triangular, and square waveform outputs are all simultaneously available from separate output terminals.

A waveform is only a graphic that aids in our comprehension of sound waves. They track the movement of one air molecule over time.

We can change a waveform’s amplitude to make it louder or quieter, and we can change a waveform’s frequency to change the pitch.

Herein,

Rf = 1.5k

C = 10 nF

Vin = 1sin(2π(1000)t)V

Vo(t) = -Rfc dvin(t)/dt

Vo(t) = -1.5 x 10^3 x 10 x 10^-9 d/dt (1sin(2π(1000)t))

Vo(t) = -15 x 10^-6 x 2π x 1000 [cos(2π(1000)t]

Vo(t) = -94.24 x 10^-3 cos(2π(1000)t)V

Vo(t) = -94.24cos(2π(1000)t) mV

or Vo(t) = -0.09424 cos(2π(1000)t)V

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The result of evaluating the following postfix expression 6 4 + * 3 10 +, the result of this postfix expression can be calculated as 13.

We want to find the value of the postfix expression:

6 4 + * 3 10 +

We will start from the left most operation symbol.

For each of the operation symbol, the two integers preceding the operation symbol are the symbols on which the specified operation needs to be performed. Then we have to replace the operational symbol with the two of the following integers as per the result of the operation.

Then we repeat for the left most operation symbol in the remaining string.

Thus, evaluating postfix,

6 4 + * 3 10 +

= 10 * 3 10 +

= 10 * 13

= 0 13

= 13

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Wavelength = c/f = (3 × [tex]10^{8}[/tex]) / (9076 × [tex]10^{9}[/tex]) = 0.0307 m.

The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal propagated in space or along a wire is defined as the wavelength.

Therefore,

Wavelength = c/f = (3 × [tex]10^{8}[/tex]) / (9076 × [tex]10^{9}[/tex]) = 0.0307 m.

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When Diego is in the race, he would be using only aerobic exercise.

The term aerobic exercise has to do with the type of exercise that require brisk repetitive movements in which the consumption of oxygen is elevated during the process.

A person tends to breath faster and more deeply when carrying out an aerobic exercise and the rapid movements is the reason why there is an intense demand for oxygen in the process.

As such, when Diego is in the race, he would be using aerobic exercise.

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