what is the magnitude of the electric field between the plates

The type of light that best illustrates the photoelectric effect is (c) ultraviolet light. Hence, the correct answer is option c).

Photoelectric effect refers to the emission of electrons from a metallic surface when a light of suitable frequency shines on the surface of the metal. The phenomenon, first noticed by Heinrich Hertz in 1887, was explained in 1905 by Albert Einstein when he used Planck's hypothesis to illustrate that light energy is carried in discrete quantized packets to describe the photoelectric effect.

In relation to photoelectric effect, the type of light that best illustrates it is ultraviolet light. This is because ultraviolet light has a high enough frequency to remove electrons from the metal surface. As a result, electrons that absorb photons with enough energy from the ultraviolet region of the electromagnetic spectrum will be ejected from the metal, causing the photoelectric effect, and producing an electric current.

When light is shone on a metallic surface, an electric current is produced, which is called the photoelectric effect. The photoelectric effect is caused by the emission of electrons from a metal surface that is exposed to a light of suitable frequency. The energy of the electrons depends on the frequency of the light, and the intensity of the light determines the number of electrons ejected from the surface.

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When a new evidence is contradicts part of a theory will cause the theory rejected or incorrect.

Theory is a condition of an estimation from the researcher that did not prove the fact about but it is estimated to be true. In research, theory is a key to the flow of a research. The research itself are done by:

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If the applied voltage is polarised in the opposite direction (negative on red and positive on black), the metre will display "backwards."

Some devices may be electrically charged at all times if an outlet has reverse polarity. Electricity will flow to the switch in a properly connected outlet; with reversed polarity, it will be present in the item even when it is not switched on.Reverse polarity protection is an internal circuit that ensures the device is not destroyed if the polarity of the power source is reversed. The reverse polarity protection circuit disables power to the transmitter or transducer's sensitive electronic circuitry.If you reside in a house that has had amateur electrical work done, there's a strong chance you have some outlets with reversed polarity. That essentially means that some of your channels may surprise you. Uh oh! While not all shocks are lethal, they are all painful and unpleasant. Only a qualified electrical contractor in North Scottsdale, AZ can perform electrical repairs in your home.

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Answer:

the laws of motion is what keeps everything going an back without gravity they couldn't been no us . let them say what they was but newton knows best if they want to come an say newtons discovery changed the world without him we couldn't rest

Answer:

True

Explanation:

It is true that. A technician can be electrocuted when working on HEVs or EVs, therefore the correct answer is option A

An EV stands for an electric vehicle. Electric vehicles (EVs) are autos that are powered totally or partially by electricity. Electric cars are extremely cost-effective to run because they have fewer moving parts to maintain and use little to no fossil fuels (petrol or diesel).

When evaluating its environmental impact, every factor must be taken into consideration. Considering that EVs have a minimal overall environmental impact, this suggests that the severity of these production emissions decreases.

Recycling is one strategy for lowering the lifespan emissions of electric vehicles. Again, incorrect assumptions can be refuted by facts.

Thus, That is accurate. The correct response is option A because a technician could electrocute themselves while working on HEVs or EVs.

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Answer:

5000J

Explanation:

hope this helps you

Answer:

the answer is letter b i think

Pls change it if you think my answer is not right ^^

To determine the fraction of the hose opening that was blocked, we can use the principle of conservation of mass. According to this principle, the mass flow rate of water should remain constant before and after blocking a fraction of the hose opening.

The mass flow rate of water is given by the equation:

Mass flow rate = density * cross-sectional area * velocity

Assuming the density of water remains constant, we can write:

Mass flow rate before blocking = Mass flow rate after blocking

The cross-sectional area of the hose opening is proportional to the square of its diameter. Let's assume that the fraction of the hose opening blocked is represented by 'x'.

Since the velocity of water before blocking is 'v' and after blocking is '4v', and the cross-sectional area is reduced by a fraction of 'x^2', we can write:

density * (1 - x^2) * v = density * 4^2 * v

Simplifying the equation, we get:

1 - x^2 = 16

x^2 = 1 - 16

x^2 = -15

Since we cannot have a negative value for 'x^2', it implies that the given scenario is not physically possible. The fraction of the hose opening blocked cannot be determined using the provided information

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The ideal mechanical advantage (IMA) of an inclined plane with a length of 16 feet and a height of 4 feet is 4:1.

An inclined plane allows us to exert a smaller force over a longer distance, making it easier to move objects along the slope. The IMA is determined by dividing the length of the inclined plane by its vertical height. In this case, the length is 16 feet and the height is 4 feet, resulting in an IMA of 4. This means that for every 1 unit of vertical height, the object will move a distance of 4 units along the inclined plane. It demonstrates the mechanical advantage gained by utilizing the inclined plane to reduce the effort required to move objects. However, factors like friction can reduce the actual mechanical advantage in practical situations.

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Of the forces present in the external environment, which is considered to be significantly uncontrollable are political forces, competition force. In physics, nuclear energy is uncontrollable.

The economy, politics, competitors, customers, and even the weather are all uncontrollable factors. the energies which are mentioned in the above part are the forces that are involuntary and voluntary both and can be controlled or cannot be controlled by our own means. we cannot tend to change it. the nuclear energy whereas is the energy that generally cannot be controlled and we have to make controls to take a control over it. this is involuntary and generally cannot be controlled. by this primary information, we can firmly conclude that of the forces present in the external environment, which is considered to be significantly uncontrollable are political forces, competition force. In physics, nuclear energy is uncontrollable.

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Answer:

40 Kpa

Explanation:

150 cm2 = 0.015 m2

\(p \: = \frac{mg}{ a} = 40000\)

Answer:

it's gravitational potential energy would have converted to kinetic energy half way back when it's falls

Answer:

B.

Light rays bends at the sharp edges in YDSE as well as double slit but intensity is much less in double slit exp. .

I hope it will be useful.

A, B, and C are three ways in which the double-slit experiment supports the wave model of light. Therefore, options A, B, and C are correct.

The following conclusions can be drawn from the results of the double-slit interference test: The head of the light that is absorbed by the screen is only a portion of the light wave; the light wave without the head can still result in interference phenomena.

An interference pattern, which consists of a mix of dark and bright bands, may be observed on the sensor screen across from the slits. Young used this interference pattern as proof that light was a wave rather than a particle.

The presence of bright and darker bands and the bending of light when it passes through the small opening are only be explained if the light is a wave. Therefore, options A, B, and C are correct.

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Answer:

Average speed = 1.3 m/s

Explanation:

Given that a student walks 160 m in 150 s. The student stops for 30 s and then walka 210 m farther in 140 s.

Neglect the time the student stops.

The total distance covered will be

Distance = 160 + 210

Distance = 370 m

The total time of the whole distance journey will be

Time = 150 + 140 = 290 s

The formula for speed is

Speed = distance/time

Speed = 370/290

Speed = 1.276 m/s

Therefore, the average speed is 1.3 m/s approximately

Main AnswerThe fraction of the block submerged can be calculated as follows;Let Vblock be the volume of the block, and let Vdisp be the volume of the block that is displaced by the liquid.Using Archimedes principle, we can find the fraction, VdispVblock, of the block submerged as follows:VdispVblock=density of the objectdensity of the liquid...Equation (1)

ExplanationWe are given the density of the object and the density of the liquid. We know that the volume of the liquid displaced is equal to the volume of the object that is submerged in the liquid.We can use the following equation to find the volume of the block that is submerged in the liquid:Volume of the block submerged = Vblock x VdispVblock...Equation (2)Since the density of the object is 0.8 g/cm3, and the density of the liquid is 2.7 g/cm3, we can find the fraction, VdispVblock, of the block submerged by substituting the values in equation

(1).Therefore;VdispVblock=0.8 g/cm32.7 g/cm3=0.296...Substituting this value in equation (2), we can find the volume of the block submerged:Volume of the block submerged = Vblock x 0.296...We can also write this as:Vdisp = Vblock x 0.296...Now, we know that the volume of the liquid displaced is equal to the volume of the block that is submerged in the liquid. Therefore, we can write:Vdisp = Vsubmerged = Vblock x 0.296...Hence, the fraction of the block submerged is 0.296 or 29.6%. Therefore, the main answer is as follows;The fraction, VdispVblock, of the block submerged is 0.296 or 29.6%.

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Answer:4.96\(cm^{3}\)

Explanation: Density is \(\frac{Mass}{Volume}\)

so you are now looking for volume.

Volume= Density x Mass so

Volume = (5.78g) x(1.15g/ \(cm^{3} \frac{x}{y}\)) =4.96\(cm^{3}\)

Answer:

THIS IS SUPER EASY!!!!!!

BOLD = ANSWER

Explanation:

REMEMBER: force = mass x acceleration

4. 6.0kg x 4.0m/s2 = 24N

5. 7.5kg x 8.3m/s2 = 62.25N

6. 2,000kg x 8.3m/s2 = 16,000N

REMEMBER: mass = force / acceleration

7. 6.0N / 3.0m/s2 = 2kg

8. 6.0N / 12.0m/s2 = 0.5kg

9. 20.0N / 5.0m/s2 = 4kg

10. 20.0N / 2.0m/s2 = 10kg

11. 4.0N / 7.3m/s2 = 0.55kg

12. 4.6N / 16.3 m/s2 = 0.28kg

I hope this helps u! :D

The minimum side length of the square antenna is approximately 0.0936 meters. The electric field is perpendicular to the antenna, the angle θ is 0° and cosθ is equal to 1.

The electric flux through a square antenna can be calculated using the formula:

Φ = E * A * cosθ

where Φ is the electric flux, E is the magnitude of the electric field, A is the area of the antenna, and θ is the angle between the electric field and the normal to the antenna.

Given:

Electric field magnitude (E) = 8.0 N/C

Electric flux (Φ) = 0.070 N·m²/C

We need to find the minimum side length of the square antenna, which implies that the antenna is a square with equal side lengths.

Since the electric field is perpendicular to the antenna, the angle θ is 0° and cosθ is equal to 1.

Substituting the given values into the electric flux formula, we have:

0.070 N·m²/C = 8.0 N/C * A * 1

Simplifying the equation, we find:

A = (0.070 N·m²/C) / (8.0 N/C)

A ≈ 0.00875 m²

Since the antenna is square, all sides are equal. Let's denote the side length as "s".

The area of a square is given by the formula:

A = s²

Substituting the known area, we have:

0.00875 m² = s²

Taking the square root of both sides, we find:

s ≈ √0.00875 m² ≈ 0.0936 m

Therefore, the minimum side length of the square antenna is approximately 0.0936 meters.

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Answer:

hey answer in the comment section

The only way to master any subject it to Practice, practice, practice!

Get a hold of the basics first. If your basics are right, then it is just straightforward from there. I have come across many courses on edx and coursera for statistics. Engage in the discussion forums on those sites. Learn from others. Practice problems and get your hands on some good books in statistics. Mastering any kind of a subject takes long, so get started right away!

I have just started learning Statistics and right now I am trying to get my basics in place. I enjoy the subject a lot and it gives me great pleasure in working on data.

hope the answer may be sufficient

may god bless

Answer:

B. A well-tested explanation for a widely accepted hypothesis

Explanation:

This is true about a scientific theory going by the fact of it being a well tested explanation. For example, in one of the Newtons law of motion which he stated to be "To every action, there is equal and opposite reaction", the hypothesis has been known till he was able to offer a well tested explanations with calculations showing that, it was actually true.

The energy required to raise the temperature of the air in a room by 5.0°C is 336 kJ

U =  \(c_{p}\) m ΔT

U = Energy

\(c_{p}\) = Specific heat

m = Mass

ΔT = Change in temperature

ρ = Density

V = Volume

ρ = 1000 g / m³ (Dry air )

\(c_{p}\) = 1 J / g K

ΔT = 5 °C

V = 4 * 4 * 3

V = 48 m³

m = ρ V

m = 1000 * 48

m = 48000 g

U = 1 * 48000 * 7

U = 336000 J

U = 336 kJ

Therefore, the energy required to raise the temperature of the air in a room by 5.0°C is 336 kJ

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This is electrostatic phenomenon. Chelsea see sparks as she removes her clothes from the clothes dryer because of static discharge.

Static electricity is produced by friction when two materials are rubbed together.

Why does Chelsea see sparks as she removes her clothes from the clothes dryer?

The correct answer is because of static discharge.

For instance, when a glass rod is rubbed with silk or cellulose acetate with silk, the glass will become positively charged by loosing electron to the silk whereby becoming negatively charged.

Static discharge occurs during thunder and lightning, and when combing our hair during harmattan season.

Therefore, Chelsea see sparks as she removes her clothes from the clothes dryer because of static discharge.

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Answer:

C) Static Discharge

Explanation:

Answer:

all but biodeisel and batteries

Explanation:

well batteries are used to STORE energy not generate it

Answer:

4,0kg it is stopped!!!!!

The momentum of the object with a mass of 3 kg and when the object is stopped is zero. There is no momentum taking place.

Momentum is equal to the product of the mass and velocity of the object. Momentum is a vector quantity as it has both magnitude and direction. The unit of momentum is kg.m/s².  Momentum represents the mass of the moving body.

Momentum is represented as the letter p. p = m×v, where m is the mass of the body and v is the velocity of the object. Momentum is directly proportional to the velocity. The velocity of the object is defined as the rate of change of displacement per unit time.

From the given,

mass of the object = 3 kg

the velocity of the object = 0 (when the body is stopped v=0)

the momentum, p = m×v

p = 3×0

   = 0

The linear momentum of the object is zero.

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The mass and magnitude of the second particle are calculated below.

The initial velocity of an object is its velocity prior to the effect of acceleration, which causes the change. The velocity will be the final velocity after accelerating the object for some time. When a particle moves at a constant speed, it can be accelerated. When a point object moves in a horizontal circular path at a constant speed, the direction of its velocity vector changes over time. It means that in a uniform circular motion, the object's velocity vector changes over time.

Distance between the charges, r = 3.2 × \(10^{-3}\)m

initial acceleration of first particle, \(a_{1}\) = 7m / \(s^{2}\)

Initial acceleration of second particle, \(a_{2}\) = 9.0m / \(s^{2}\)

Mass of first particle, \(m_{1}\) = 6.3 × \(10^{-7}\)kg

Mas of second particle, m₂ = ?

a) Since, \(F_{1}=F_{2}\)

∴ \(m_{1}a_{1} = m_{2}a_{2}\)

mass of second particle-\(m_{2}\) =\(\frac{m_{1}\times a_{1}}{a_{2}}\)

= \(\frac{6.3\times10^{-7}\times7.0}{9.0}\)

=4.9 × \(10^{-7}\)Kg

b)As, \(F_{1} = F_{2}\)

       = \(\frac{q_{1}q_{2}}{4\pi E_{0}r^{2}}\) = \(m_{1}a_{1}\)

       = 6.3 × \(10^{-7} \times\) 7.0

       = 44.1 × \(10^{-7}\)

∴ q = 7.1 × \(10^{-11}\)C.

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Answer:

Nuclear reactors are the heart of a nuclear power plant. They contain and control nuclear chain reactions that produce heat through a physical process called fission. That heat is used to make steam that spins a turbine to create electricity.

Answer:

A nuclear power plant's heart is made up of nuclear reactors. They contain and regulate nuclear chain reactions, which produce heat via a physical process known as fission. This heat is converted to steam, which powers a turbine to generate energy.

Throwing one shoe southward at 10 m/s will give you more momentum toward the north.

Momentum is defined as the product of an object's mass and its velocity. The momentum of an object can be determined using the equation:

Momentum = mass × velocity

In this case, both scenarios involve throwing shoes southward, which means the velocity is directed to the south. The key difference is the magnitude of the velocity.

When throwing one shoe southward at 10 m/s, the velocity is higher compared to throwing two shoes southward at 5 m/s. Since momentum depends on velocity, the higher velocity of the single shoe results in a greater momentum.

The mass of the shoes does not play a role in determining which action gives more momentum toward the north since the mass is the same in both scenarios. Therefore, throwing one shoe southward at 10 m/s will give you more momentum toward the north compared to throwing two shoes southward at 5 m/s.

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