how to calculate that ​

When cyclooctatetraene is treated with excess potassium metal dipotassium cyclooctatetraene dianion compound is formed.

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Hybrid

Hybrid modified the concept by adding an internal combustion engine and marketing hybrids that were part electric and part gas powered.

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Answer:

d) the object gets bluer

blue wavelengths are shorter than red wavelengths (in the visible spectrum)

blue light will carry more energy than an equivalent amount of red light

The appearance of an object as it gets hotter is that the object gets bluer. Hence, option (d) is correct.

Wavelength is the separation between the equivalent points of two successive waves. When two points or particles are referred to be "corresponding points," it means that they are both in the same phase and have completed exactly the same portions of their vibration. Typically, the wavelength of transverse waves—those whose points advance at right angles to one another—is assessed from crest to crest or from groove to trough; for longitudinal waves—those whose points advance in the same direction—the wavelength is measured from compression to compaction or from rarefaction to rarefaction.

A wave train's speed (v) in a medium is equal to its frequency (f), hence the formula for wavelength is v/f. Wavelength is commonly represented by the Greek character lambda λ.

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Overhead is applied to work in process based on the predetermined rate times standard activity allowed in a standard costing system.

A standard cost is a fixed price per unit of direct materials, fixed price per direct labour hour, and fixed price per hour of overhead that is based on predicted quantities of direct materials and projected direct labour time.

Top management may find a standard cost system useful for planning and decision-making. easier and more reasonable inventory measurements. Compared to an actual cost system, a standard cost system makes inventory valuation simpler. Unit costs for batches of identical products may differ significantly under an actual cost system.

Therefore,Overhead is applied to work in process based on the predetermined rate times standard activity allowed in a standard costing system.

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The magnetic field will be given by the formula B=B1+B2.

Between two wires, the magnetic field has the formula B=B1+B2.

We must first calculate the magnetic field caused by each wire before adding the two vectors to find the net magnetic field halfway between the two wires. We must subtract the two vectors in order to find the total magnetic field because the electric current flows in the opposite direction via both cables.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is traveling through a magnetic field.

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The new pressure of the air in the syringe is 1.5 atm.

The new pressure of the air in the syringe is calculated as follows assuming the temperature remains constant;

P2 = P1V1/V2

P2 = 1 * 60/40

P2 = 1.5 atmospheres

In conclusion, pressure varies inversely as volume.

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The magnitude of the uniform electric field, if the electric potential is -2000 v at x = 8m and is 400 v at x = 2 m in x direction will be, 400V/m.

To find the answer, we have to know more about the electric field.

                                         [tex]E=\frac{dV}{dx}[/tex]

where, dV is the potential difference at two different points of the conductor and dx is the difference of the points.

                      [tex]|E|=|-(\frac{dV}{dx} )|=|-(\frac{-2000-400}{8-2} )|\\\\|E|=400V/m[/tex]

Thus, we can conclude that, the magnitude of the uniform electric field, if the electric potential is -2000 v at x = 8m and is 400 v at x = 2 m in x direction will be, 400V/m.

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Gravity has an effect on the ease of landing on moons and planets. And on leaving! Actually Earth is about as heavy a planet as one could want. It takes a lot of fuel to leave Earth and a huge amount of energy to ship anything from Earth. Hence the attraction of using the moon or Mars as a base for exploration. But if you have to ship everything to the moon and then transship to other destinations it’s a losing proposition. The only thing that would make it work would be the ability to find lots of water and oxygen on the moon.

Answer:

The Big Dipper

Explanation:

Bootes is near the "Big Dipper" which is itself part of Ursa Major.

At temperature 402.71° C must a hot reservoir operate in order to achieve a 30% Carnot efficiency when the cold reservoir operates at 200 °C.

The Carnot engine is a theoretical thermodynamic cycle proposed by Leonard Carnot. It estimates the maximum possible efficiency that a heat engine during the conversion process of heat into work and, conversely, working between two reservoirs can possess.

The Carnot efficiency depends only on the temperature of the hot source and the cold sink. Carnot efficiency describes the maximum thermal efficiency that a heat engine can achieve as permitted by the Second Law of Thermodynamics.

Given

Efficiency = 30 %

T2 = absolute temperature of the heat source = T2

T1 = absolute temperature of the heat sink = 200 °C

efficiency = T2 - T1 / T2

30 /100= T2 - 200 / T2

T2 = 675.71° K

T2 = 402.71° C

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When testing for friction loss coefficients, departments that use a pitot tube should use Smooth bore nozzle

The pitot tube is a simple and convenient instrument to measure the difference between static, total and dynamic pressure (or head) .

It is a device used to measure velocity in pipe, wide tunnel, aero planes , etc. Pitot tube is completely based on its principle that if the velocity of flow at any point becomes Zero. A pressure measuring instrument used to measure fluid flow speed, especially used to determine the airspeed of an aircraft

Smooth bore nozzles also use the lowest engine pump pressures, allowing for maximum reach. Smooth bore nozzles are often referred to as solid bore nozzles because they produce a solid stream to provide maximum reach and penetration to the seat of the fire.

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An ECG does not show atria repolarization.

To find the answer, we need to know more about the electrocardiogram.

Thus, we can conclude that, the option d is correct.

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The resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]

Given:

length,l=100vm or 1m

Area,A

Resistance,R

To find:

resistivity,ρ

ρ = RA/l

[tex] = \frac{400 \times 2 \times 10 {}^{ - 6} }{1} [/tex]

[tex] = 800 \times 10 {}^{ - 4} Ωm[/tex]

Thus,the resistivity comes out to be

Thus,the resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]

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The elevation in reservoir  at  the rate of flow using is 03m/s  is 114m.

The Reynolds range is the ratio of inertial forces to viscous forces. The Reynolds variety is a dimensionless variety used to categorize the fluids structures in which the impact of viscosity is crucial in controlling the velocities or the flow sample of a fluid.

The reason of the Reynolds number is to get a few experience of the relationship in fluid glide between inertial forces (this is those that maintain going by using Newton's first law – an item in motion stays in movement) and viscous forces, this is people who cause the fluid to come back to a forestall because of the viscosity of the fluid.

calculation,

Let L = 100 m pipe

     L1 = 150 m pipe

H f = friction losses

Using Reynolds number, relative  roughness, friction co- effiicients and friction losses

Substitute the value in equation

Z = 110= 0.48= 3.54

Z = 114m

Therefore water surface elevation at reservoir  is 114 meter.

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The amount of work done by the gravitational field of the earth do on the rock is 166.6d (J).

Work is done when energy is transferred from one store to another.

Work is also done when a force causes an object to move.

The amount of work done by the gravitational field of the earth do on the rock is calculated as follows;

W = Fd

where;

W = (mg)d

W = (17 x 9.8)d

W = 166.6d

Thus, the amount of work done by the gravitational field of the earth do on the rock is 166.6d (J).

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No, it's not necessary for the object with constant velocity to move in a straight line.

It can can also move in a uniform circular path.

Only when no forces are present or when all of the forces acting on an item are equal and opposite to one another, or when the total force acting on the object is zero, will its velocity remain constant. It's commonly known as equilibrium. The sum of the forces exerted on an object must be zero since, in accordance with Newton's first law of motion, an object moving at a constant speed experiences no net external force.

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Answer:

B (buoyant force) = weight of air displaced - weight of balloon

Both balloons will displace the same amount of air but the weight of the balloon filled with He is much less and will experience a greater buoyant force - actually if a balloon is filled with air its weight would be the same as the weight of the air displaced and there would be no buoyant force

The water is heated as the current from the coil is transferred by means of the magnetic field to the pan. The pan then induces a current in the water, which heats due to resistance. That is option B.

Induction cooking is referred to the transfer of heat energy from one source to another through a magnetic field that helps in the movement of electrons.

Heat cannot be transferred to the water without changes of the magnetic field.

Other examples of how heat is being transferred to other body surfaces include the following:

Therefore, the diagram above displays the heat transfer from the copper coil carrying current to the water in the steel pan is by induction.

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Hi there! Your answer is below.

Pulley sizes, cylinder size ratios, screw pitch, leverage, gear ratios, and pulley sizes

The MA increases yet the work takes longer to complete the farther the applied effort goes relative to the load. An excessive increase in the MA may be counterproductive.

Bicycle derailleurs are the most obvious example of variable MA.

Choose a low gear to climb hills more easily, but if you don't switch to another one on the flat, you'll be pedaling frantically and quickly getting nowhere. (Of course, you progress, but slowly.)

I frequently use bicycles as illustrations of intricate mechanics. They aren't actually toys at all!

Thank you,

Eddie

Explanation:

They will have not much control over their speed or rotational energy. they will carry a lot of gravitation potential energy which will get converted to kinetic energy as they fall through the atmosphere. They will reach their terminal velocity, the fastest they can travel with earth's gravity before they pull their parachute, when they use a parachute to extend their surface area, increasing wind resistance. this allows them to land safely.

Protein-energy malnutrition is the condition linked to poverty, insufficient food intake, poor food quality, unsanitary living conditions, and improper feeding of infants and young children. The correct option is 4.

Protein-energy malnutrition (PEM) is a type of malnutrition that occurs when there is a deficiency in both protein and energy (calories) intake. It is often associated with impoverished and disadvantaged populations who lack access to an adequate and balanced diet. PEM can lead to severe health consequences, including stunted growth, weakened immune system, and increased susceptibility to infections and diseases.

Efforts to combat PEM include improving food security, promoting better nutrition practices, and enhancing access to essential nutrients through supplementation and fortification of food. Addressing poverty, improving living conditions, and ensuring proper healthcare and education are also crucial in preventing and treating protein-energy malnutrition in vulnerable populations.

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The annual cost of electricity is $28.908 .

work done is equal to energy consumed

therefore total energy is calculated as power times the duration of operation .

[tex]W=P.t[/tex]

where W= work done

            P=power

            t= time of operation

therefore,

total work done (W)=0.06×12×365 kw

=262.8 kw

so total annual electricity bill = 262.8×0.11

=$28.908

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A photon of blue light has a higher frequency and a lower wavelength than a photon of red light.

The wavelength of light is the distance between corresponding points in two adjacent light cycles, and the frequency of light is the number of cycles of light that pass a given point in one second.

Wavelength is typically represented by λ, the lowercase Greek letter lambda, while frequency is represented by ν, the lowercase Greek letter nu

Red light has a wavelength of ~700 nm, and a frequency of ~4.3*[tex]10^{14}[/tex] Hz. Visible light makes up just a small part of the full electromagnetic spectrum.

Wavelength of blue light: 450nm and  frequency of blue light 6.66 * [tex]10^{14}[/tex] Hz

Blue light has higher frequency, shorter wavelength and more energy.

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At time [tex]t[/tex] seconds, the mass has angular speed

[tex]\omega = \left(3.31\dfrac{\rm rad}{\mathrm s^2}\right) t[/tex]

and hence linear speed

[tex]v = (1.4\,\mathrm m) \omega = (1.4\,\mathrm m) \left(3.31\dfrac{\rm rad}{\mathrm s^2}\right) t[/tex]

After 8 s, its linear speed is

[tex]v = (1.4\,\mathrm m) \left(3.31\dfrac{\rm rad}{\mathrm s^2}\right) (8\,\mathrm s) = 37.072 \dfrac{\rm m}{\rm s} \approx 37 \dfrac{\rm m}{\rm s}[/tex]

and has centripetal acceleration with magnitude

[tex]a = \dfrac{v^2}{1.4\,\rm m} \approx 981.667\dfrac{\rm m}{\mathrm s^2} \approx 980 \dfrac{\rm m}{\mathrm s^2}[/tex]

To maintain this linear speed, by Newton's second law the required centripetal force should have magnitude

[tex]F = (0.34\,\mathrm{kg}) a \approx 333.767\,\mathrm N \approx \boxed{330 \,\mathrm N}[/tex]

The total energy transported per hour along a narrow cylindrical laser beam 2. 40 mm in diameter, whose b-field has a RMS strength of 1. 30×10−10 will be 6.40 × 10⁻⁸J.

Intensity for an electromagnetic wave is energy crossed per second in the direction perpendicular to the propogation of electromagnetic wave which is passing per unit area.

The Intensity for an electromagnetic wave is given by:

I = cε₀E₀²

where c is the speed of light,

           E₀ is the maximum value of the electric vector

           ε₀ is the permitivitty of medium

           I is the intensity

We know that, E = Bc

where, B is the magnetic field

Hence on substituting into the formula:

I= cε₀E₀²

⇒ I= c³ε₀B²

Given,

B = 1.30×10⁻¹⁰ T

So,

I = (3 X 10⁸)³ X (8.85 X 10⁻¹²) x(1.10×10⁻¹⁰)²

⇒ I = 96.37 × 10⁻⁸ W/m²

Energy transported per unit hour is :

E= AIt

where A is the area of beam = πr²

             r is the radius of beam used, r = 1.20mm = 0.0012m

            t is the time = 1hr = 3600s

On substituting,

E = 2.891 × 10⁻⁶ × πr² × 3600

E = 2.891 X 10⁻⁶ × 3.14 × (0.0012)² x (3600)

E = 6.40 × 10⁻⁸J

Hence, total energy transported per hour along a narrow cylindrical laser beam is 6.40 × 10⁻⁸J.

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What is the distance to the nearest antinode from the fixed end of a guitar string vibrating at its first harmonic? /4

The wave at every given instant resembles a graph of a sine wave because the antinodes alternate in the wave's displacement direction. The nodes on a guitar string are the locations where harmonics can be produced the greatest, especially at the 12th fret. The sound is muffled by touching the antinodes.

Halfway between the string's anchor points and the node, or between 1/4 and 3/4 of the string's overall length, are the most audible and vibrating points of these harmonics (called antodes).

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Answer:

glass is optically denser as it is a optical material having more index number above the list

Answer:

zicron

Explanation:

it has a large refractive index

broglie wavelength of this electron is 107.5pm.

what is de broglie wavelength?

The wavelength (λ) that is associated with an object in relation to its momentum and mass is known as de Broglie wavelength.

Given:

de broglie wavelength of this electron? [ke[ke = 12mv2;12mv2; 1 electron volt (ev)(ev) = 1. 602×10−19j] is 107.5pm

[tex]h = 6.63 \times 10 { }^{ - 34} [/tex]

[tex]k = 120ev[/tex]

[tex]me = 9 \times 10 {}^{ - 31} kg[/tex]

[tex]1ev = 1.6 \times 10 {}^{ - 19} [/tex]

[tex]p = \sqrt{2mk} [/tex]

[tex] = \sqrt{2 \times 9 \times 10 { }^{ - 31} \times 1.6 \times 10 {}^{ - 19} } [/tex]

[tex] = 5.88 \times 10 {}^{ - 24} kgm/s[/tex]

de broglie wavelength

λ=h/p

[tex] = \frac{6.63 \times 10 {}^{ - 34} }{5.88 \times 10 {}^{ - 24} } [/tex]

Thus from the above calculation the de broglie wavelength comes out to be 107.5pm

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It will be about 26 degrees north of observer's meridian.

To find the answer, we have to know more about observer's meridian.

Thus, we can conclude that, the moon due south on the meridian will be

about 26 degrees north of observer's meridian, after two nights at the same time.

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