What is the equiliibrium constant k for a redox reaction involving the transfer of 6 mol electrons?

Answer:

v_{f}=21.75[m/s] (velocity just before it lands)

t = 2.98 [s]

Explanation:

The key to solving this problem is the initial velocity since when the camera falls it is moving up, we will take this velocity as negative and the acceleration gravitation down as positive.

We will use the following equation of kinematics to solve this problem.

\(V_{f}^{2} =V_{o}^{2}+2*g*y\)

where:

Vf = final velocity [m/s²]

Vo = initial velocity = 7.5 [m/s]

g = gravity acceleration = 9.81 [m/s²]

y = elevation = 27 [m]

\(v_{f}^{2} = - (7.5)^{2} +(2*9.81*27)\\ v_{f}^{2} = 473.5\\v_{f}=\sqrt{473.5}\\v_{f}=21.75[m/s]\)

Now using the following equation of kinematics, we can calculate the time that the fall lasts.

\(v_{f}=v_{o}+g*t\)

\(21.75 = -7.5 +9.81*t\\9.81*t = 29.25\\t = 2.98[s]\)

Answer:

182 V

Explanation:

We do:V=I.R

V is energy so

I = 7

R = 7+7+3+3+6

V= 7.26

V=182

Answer:

elementary particles?

Matter is composed of elementary particles i.e. quarks and leptons.

Matter is composed of elementary particles which is called quarks and leptons. Quarks consist of protons, neutrons and electrons. All observable matter is made up of up quarks, down quarks and electrons.

Lepton is an elementary particle consist of half-integer spin that does not undergo strong interactions. Leptons exist on two main classes i.e. charged leptons, and neutral leptons. Electron, electron neutrino, muon, muon neutrino, tau and tau neutrino are the six types of leptons.

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Answer:

180 [J].

Explanation:

1) the required work [W] can be calculated as difference of the energy: W=E₂-E₁, where E₁=mgh₁ - the energy before lifting, E₂=mgh₂ - the energy after lifting;

2) W=mgh₂-mgh₁, where m - mass; g=10 [N/kg], h - height;

3) then the required work [W]:

W=mg*(h₂-h₁)=30*6=180 [J].

(i) Wavelength is 0.1 m (ii) the speed of the wave is 1.5 m/s. (iii) the time period the wave is 0.067 seconds.

Given:

Wavelength (λ) = 10 cm = 0.1 m

Frequency (f) = 15 Hz

(i) The distance between successive crests is equal to one wavelength. Therefore, the distance between successive crests can be calculated as:

Distance between successive crests = Wavelength (λ) = 0.1 m

(ii) The speed of the wave can be calculated using the formula:

Speed (v) = Wavelength (λ) x Frequency (f)

Substituting the given values, we get:

v = λ x f

v = 0.1 m x 15 Hz

v = 1.5 m/s

Therefore, the speed of the wave is 1.5 m/s.

(iii) The period (T) of the wave is the time taken for one complete wave cycle. It can be calculated using the formula:

Period (T) = 1 / Frequency (f)

Substituting the given values, we get:

T = 1 / f

T = 1 / 15 Hz

T = 0.067 s

Therefore, the period of the wave is 0.067 s.

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The term "psychophysics" was coined by German psychologist and philosopher Gustav Fechner in the mid-19th century.

He introduced the concept in the mid-19th century as a way to quantify and study the relationship between physical stimuli and their psychological effects. Fechner is considered to be the founder of psychophysics, and his work laid the foundation for the development of this field of study. Psychophysics aims to understand the perception of stimuli and how it is related to the physical properties of the stimuli, such as their intensity, duration, and frequency. Psychophysics is a subfield of psychology that deals with the relationship between physical stimuli and their psychological effects. It aims to quantify the relationship between the physical properties of stimuli, such as intensity, duration, and frequency, and the subjective experiences of those stimuli, such as sensation, perception, and response.

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Answer: nucleons are the particles that make up in nucleus

Explanation:

Nucleons are the particles that make up a nucleus, and they include protons and neutrons.

Nucleons are particles that make up nucleus of an atom. They include either proton or neutron, or both found in atomic nucleus.

Generally, nucleons are subatomic particles found within nucleus of an atom.

Therefore, we can conclude that, nucleons are the particles that make up a nucleus.

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Given

The Sun is d=150 million kilometers away from Earth.

Light travels at v=3 × 10^5 m/s.

To find

How long does it take for light to reach Earth from the Sun?

Explanation

We know

Time taken is given by

Conclusion

The time taken is D.500 sec

Answer:

papi sus

Explanation:

The correct sequence of flow of electrical current in the cardiac conduction system is SA node, AV node, bundle of His, Purkinje fibers. This sequence can be found in option E.

Here is a brief explanation: The SA (sinoatrial) node initiates the electrical impulses that regulate the rhythm of the heartbeat. The electrical impulses from the SA node spread across the atria, causing them to contract. The AV (atrioventricular) node is the next point of the electrical conduction system, which slows the electrical signal as it passes through. The bundle of His is the pathway that conducts the impulses from the AV node to the ventricles, causing them to contract. The bundle of His divides into right and left branches, which travel along the interventricular septum towards the apex of the heart. The Purkinje fibers then carry the electrical impulses throughout the ventricles, causing them to contract in a coordinated manner.

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Answer:

1 B      2 D  3  D    4 DC  wire  ferrite   5 D

Explanation:

Frozen preparations such as ice cream, sorbet, gelato, granite can be melted and refrozen, except gelato which cannot be melted and refrozen. This is because the ice cream, sorbet, and granite all contain a high content of fat which allows them to melt and refreeze successfully without becoming damaged.

However, the process of freezing the gelato forms tiny ice crystals, which provide its unique texture. If gelato is melted, it will lose its texture and will not re-freeze successfully.A gelato is a dense Italian ice cream that has a creamy texture and has a lower fat content than traditional ice cream. It is made by mixing milk, sugar, and flavorings, such as nuts or chocolate, and then churned to incorporate air into the mixture.

So, the ice cream, sorbet, and granite all contain a high content of fat which allows them to melt and refreeze successfully without becoming damaged.

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The event that marks the end of a star's evolutionary life before becoming a white dwarf is a planetary nebula. So, option E is correct.

A planetary nebula is characterized by cosmic rays of gas and dust surrounding a dying star. This dying star becomes a white dwarf after the complete depletion of hydrogen in the core.

It gets its name from a scientist who described the gases to be looking like two planets around a dying star. Thus, it's called planetary nebulae. This marks the final stage of a dying star that becomes a white dwarf. It consists of the outer layers of the star.

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Answer:

A

Explanation:

The answer option which would produce the most power is: C. A mass of 10 kilograms lifted 10 meters in 5 seconds

Power can be defined as the capacity to do work.

Mathematically, power is given by the formula;

\(Power = \frac{Work \; done}{time} \\\\But, \;Work \; done = mgh\\\\Power = \frac{mgh}{time}\)

Where:

Note: Acceleration due to gravity is equal to 10 \(m/s^2\).

For option A:

\(Work\; done = 5(10)(5)\)

Work done = 250 Joules

\(Power = \frac{250}{10}\)

Power = 25 Watts.

For option B:

\(Work\; done = 5(10)(10)\)

Work done = 500 Joules

\(Power = \frac{500}{10}\)

Power = 50 Watts.

For option C:

\(Work\; done = 10(10)(10)\)

Work done = 1,00 Joules

\(Power = \frac{1000}{5}\)

Power = 200 Watts.

For option D:

\(Work\; done = 10(10)(10)\)

Work done = 1,00 Joules

\(Power = \frac{1000}{10}\)

Power = 100 Watts.

Therefore, a mass of 10 kilograms lifted 10 meters in 5 seconds would produce the most power.

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Answer:

the charges get closer together

Answer:

The correct solution is "\(5\times 10^{-4}\) %".

Explanation:

The given values are:

Pressure,

\(\Delta P=7\times 10^5 \ N/m\)

for copper,

\(B=14\times 10^{10} \ N/m\)

As we know,

The Bulk Modulus (B) = \(\frac{\Delta P}{-\frac{\Delta V}{V} }\)

or,

The decrease in volume will be:

= \((\frac{\Delta V}{V})\times 100 \ percent\)

then,

= \(\frac{\Delta P}{B}\times 100 \ percent\)

On putting the values, we get

= \(\frac{7\times 10^5}{14\times 10^{10}}\times 100 \ percent\)

= \(5\times 10^{-4} \ percent\)

Answer: Tennis player's total distance travelled from A to C=8.4m

               Tennis player's total displacement travelled from A to C=1.6m

Explanation:

As per shown in the fig:

Given:

AB=4.2m

BC=2.6m

Distance is total path travelled by an object

So distance d=AB+AC+BC.....1

but, AC=AB-BC

            =4.2-2.6

       AC= 1.6m  .......2

Total distance=4.2+2.6+1.6

Total distance=8.4 m  

As per definition, displacement is minimum distance travelled by the object .It is nothing but the AC in this question.

 displacement=AC=1.6m......(from 2)

Answer: tug vi

Explanation:

Because

Answer:

focal length

Explanation:

This describes focal length of the beam

Answer:

80 mph

Explanation:

can you plzzzzz make me brainliest

Answer:

178.955mph or 179mph

Explanation:

✨calculator✨

Answer: 8.75 km/hr

Explanation:

Concept to know

Average speed: total distance/total time

-------------------------------------------------------

 total distance/total time

=(12.2+19.3)/(1.4+2.2) ⇔ add the numbers of two time running together

=31.5/3.6 ⇔ simplify

=8.75 km/hr

Hope this helps!! :)

Please let me know if you have any question

When light waves fall on a thin film of oil or soap bubble, they reflect back from both the top and bottom surfaces. Therefore, the minimum thickness of the soap bubble film is 386.7 nm.

The light waves interfere with one another and either enhance or cancel each other out, depending on their relative phase at the time of reflection. When two light waves reinforce each other, the interference is constructive. In this question, we have to find the minimum thickness of a soap bubble film with refractive index 1.50 that results in constructive interference in reflected light if this film is illuminated by a beam of light of wavelength 580 nm.So, we know that the condition for constructive interference is given by2t=nλ/1.5where, t is the thickness of the soap film, λ is the wavelength of the light and n is the order of interference. To find the minimum thickness, we need to consider the first order of interference, i.e., n=1.Substituting the values in the above equation, we get2t= (1 × 580 × 10-9) /1.5= 0.3867 × 10-6 m= 386.7 nm.

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In the complete description of a force vector, type is usually not necessary. Thus, the correct option is C.

A force vector is a representation which has both the magnitude and direction of the force. Such a vector is typically represented through an arrow in the direction of the force applied and with a length which is proportional to the magnitude of the force.

If a force is applied on an object, this causes movement of the object in a given direction and the wind applies a force on it at an angle, and the new motion will be as that of a force which was applied in that direction.

Therefore, the correct option is C.

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Answer:

the answer of question no5 is b

It would take approximately 2.205 seconds for a 200W motor to lift a 1.5kg box to a height of 30m.

We can calculate how long it will take a 200W motor to raise a 1.5kg box 30 metres using the work and power computation.

In order to calculate work (W), multiply the applied force (F) by the distance travelled (d):

W = F * d

The rate at which work is completed is known as power (P), which may be determined using the formula: P = W /t.

t is the amount of time spent.

We are aware that the box's mass (m) is 1.5 kg, its height (h) is 30 metres, and its power (P) is 200 W.

Calculate the work that has been done first:

Work (W) is equal to m * g * h.

Where g is the gravitational acceleration (about 9.8 m/s2):

W = 1.5 kilogramme * 9.8 m/s2 * 30 m

W = 441 Joules.

The power formula can then be used to determine the time (t):

2.205 seconds pass between P = W /t 200W and 441J /t.

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Answer:

below

Explanation:

Work = force x distance = PE gain = mgh =  4 kg * 9.81 m/s^2 * 6 = 235.44  j

Power  = work / time      ( time is in seconds)

          = 235.44 / (2*60) = 1.962 watts  

   SPECIFIC power = 1.962 w / 4 kg = .49 w/kg

The statement d is true.

Seatbelts are designed to help protect drivers and passengers during a car crash by preventing them from being thrown out of the vehicle or striking hard objects inside the vehicle. While seatbelts can cause injuries in a crash, such as bruises or abrasions, they are generally effective at reducing the severity of injuries and saving lives.

In contrast, a driver who is thrown out of the car in a crash is much more likely to suffer severe or fatal injuries. This is because the driver is not protected by the structure of the vehicle and is more likely to strike hard objects or be struck by other vehicles.

Airbags are designed to work in conjunction with seatbelts, not to replace them. While airbags can help to protect drivers and passengers in a crash, they are not a substitute for seatbelts and should not be relied upon as the sole means of protection.

If the car is on fire or submerged in water, it is important to unbuckle the seatbelt before attempting to escape. However, it is still important to wear a seatbelt while driving or riding in a car, as it can help to protect you in the event of a crash.

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Answer:

X is frictional force

Explanation:

when X is greater than pushing force,the object won't move

The correct answer for the nature of force at "X" is frictional force.

What is friction force?

Friction or frictional force is the force that acts when two surface comes in contact with each other. When a body A is resting upon a body B, The force that helps the body to maintain the equilibrium position is static friction.

Kinetic friction slows down a moving object, when their is relative   motion between two objects. It always acts in apposite direction to the force applied.

It is denoted by \(F\).

The formula to calculate static friction is \(F = \mu N\)

\(\mu_s =\) Co-efficient of static friction

\(\mu_k =\) Co-efficient of Kinematic friction.

The Force indicated at "X" is "Kinetic friction", It will slow down the moving object.

When "X" is greater than the moving object, the object will stop moving and will remain at rest.

The Force Indicated at "X" is Frictional force.

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