suppose that one particle of the flow approaches a plate of a capacitor. explain what happens to the other plate of the capacitor?

To produce the same amount of power (1000 W) at 120 V, a current of 8.33 A is required, which is twice the amount of current required at 240 V.

Current is the rate at which electrons flow past a point in a complete electrical circuit.

The power (P) in an electrical circuit can be calculated using the formula:

P = V * I

Where

If the voltage is reduced from 240 V to 120 V while maintaining the same power output, then the current will have to increase to compensate for the lower voltage.

Let's assume that the power output remains constant at a value of 1000 W. We can set up the following equation:

P = V * I

1000 W = 240 V * I1

Solving for I1, we get:

I1 = 1000 W / 240 V

= 4.17 A

This is the current required to produce 1000 W of power at 240 V.

Now, let's determine the current required to produce the same amount of power (1000 W) at 120 V:

P = V * I

1000 W = 120 V * I2

Solving for I2, we get:

I2 = 1000 W / 120 V

= 8.33 A

Therefore, to produce the same amount of power (1000 W) at 120 V, a current of 8.33 A is required, which is twice the amount of current required at 240 V.

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Inelastic collision, the momentum before and after the collision and the total energy of the system remains conserved.

Answer:

C. Spring Tides is the answer.

According to the Elaboration Likelihood Model (ELM), message elaboration is the central route of persuasion that produces major positive attitude change.

The Elaboration Likelihood Model (ELM) is a theory in social psychology that explains how persuasion occurs and the factors that influence attitude change. According to the ELM, there are two routes to persuasion: the central route and the peripheral route.

The central route involves deep message elaboration, where individuals are motivated and able to carefully process and scrutinize the arguments presented. This route leads to more significant attitude change because listeners actively engage with the strong and issue-relevant arguments.

On the other hand, the peripheral route relies on message-irrelevant factors such as reciprocation, consistency, social proof, liking, authority, and scarcity. These peripheral cues can sway attitudes, but the changes tend to be more fragile and temporary.

In summary, the ELM suggests that when individuals are unbiased, motivated, and capable of critically evaluating persuasive messages, the central route of message elaboration produces substantial and lasting attitude change.

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Given:

Thermal energy is denoted by W

Chemical energy is denoted by X

Electrical energy is denoted by Y

Kinetic energy is denoted by Z

To find the order of energy while converting bagasse to electricity.

Explanation:

The bagasse has chemical energy stored in it.

The bagasse is burned, so chemical energy gets converted into thermal energy.

The thermal energy gets converted into kinetic energy.

The kinetic results in the motion of electrons.

Thus, producing electrical energy.

Hence, the conversion order is XWZY

Beyond "c", the speed of the rocket is; (D) increasing for a while and constant thereafter.

The space shuttle must accelerate from zero to 8,000 metres per second (nearly 18,000 miles per hour) in eight and a half minutes to reach the minimum height necessary to circle the Earth.

The orbital velocity is 7.9 kilometres per second, which translates to more than 20 times the speed of sound. A rocket attaining orbital velocity (1st cosmic velocity) will enter orbit around the Earth (C), whereas a faster rocket would follow an elliptical trajectory (D).

On Earth, air tends to prevent exhaust gases from exiting the engine. This lessens the thrust. However, because there is no atmosphere in space, the exhaust gases may depart considerably more easily and quickly.

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Given that,

Mass of the stone, m = 400 g = 0.4 kg

Initial speed, u = 20 m/s

It is climbed to a height of 12 m.

To find,

The work done by the resistance force.

Solution,

Let v is the final speed. It can be calculated by using the conservation of energy.

\(v=\sqrt{2gh} \\\\v=\sqrt{2\times 9.8\times 12} \\\\v=15.33\ m/s\)

Work done is equal to the change in kinetic energy. It can be given as follows :

\(W=\dfrac{1}{2}m(v^2-u^2)\\\\=\dfrac{1}{2}\times 0.4\times (15.33^2-20^2)\\\\=-32.99\ J\)

So, the required work done is 32.99 J.

Resonant standing waves are excited on a string that is fixed at both ends. The speeds of the superposed traveling waves that yield the standing wave increase if: "The tension of the string is increased" (Option B)

A resonant mode of an extended vibrating object is commonly referred to as a standing wave.

The resonance is caused by the constructive interference of two waves traveling in opposing directions across the medium, yet the visual result is that the entire system is moving in simple harmonic motion.

With regard to the above response, note that

The speed of a wave is given as:

σ = √ t/μ

Where

μ= mass' density

t = tension

σ = speed

Given the above expression, it is easy to see that when T increases, the speed of the waves increases.

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The three kinds of load that make up the particles a stream carries are bed load, suspended load, and dissolved load.

Larger particles like gravel, rocks, and boulders that are too heavy to be raised into the water column make up the bed load in streams and rivers. By rolling, sliding, or bouncing along the stream bed, these particles are propelled along by the flow of the stream. The stream's capacity for erosion and its capacity to carry material downstream can both be impacted by the quantity and size of the bed load.

On the other hand, suspended load is made up of smaller, lighter particles that can be lifted and moved within the water column, including silt and clay. The turbulent stream flow keeps these particles suspended, and the amount of each particle varies depending on the stream's velocity and the amount of silt present.

The term "dissolved load" describes the minerals, salts, and organic molecules that are dissolved in the water. These materials are dissolved inside the water rather than being visible as particles. The term "dissolved load" refers to the amount of material that dissolves into the water of a stream as a result of chemical weathering processes. It may have an impact on the stream's chemical make-up and be crucial for water quality and biogeochemical cycling.

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Answer:

most light waves are scattered or are either reflected

Explanation:

the light waves bounce after hitting the mirror.

Answer:

most light waves are reflected

explanation:

when light hits a mirror it bounces back at the same angle it hit this is called reflection refraction on the other hand Refraction is the bending of light

Image result for what is refraction of light

Refraction is the bending of light

Answer:

w = 7.5 [J]

Explanation:

We must remember the definition of mechanical work, which tells us that work is equal to the product of force by distance. This force must be applied in the direction of movement. So we have the following equation:

w = F*d

where:

w = work [J]

F = force [N]

d = distance [m]

Now replacing we have:

w = 5*1.5

w = 7.5 [J]

Answer:

The red substance was ionic. The white substance was molecular.

Explanation:

B.C.

If Clarisse had three substances, A white substance was waxy and malleable. A red crystal was translucent, and it cracked when she hit it with a hammer. A silver substance could be flattened by hitting it with a hammer, but it did not crack. the two true statements are the red substance was ionic and the white substance was molecular. therefore the correct option is B and D.

The chemical compound is a combination of two or more either similar or dissimilar chemical elements, for example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.

These chemical compounds are formed because of different types of bonds between the constituent's elements, the chemical bonds are mainly ionic bonds, covalent bonds,s, and hydrogen bonds.

Ionic bonds are formed due to the transfer of electrons between two bond-forming pairs differentiated by their electronegativity.

Covalent bonds are formed by the sharing of electrons. Generally, organic compounds are formed as the reason for covalent bonds.

As the white substance is waxy and malleable and the silvers substance could be flattened by hitting with a hammer but it did not crack it means the white substance is a metallic material that is molecular in nature , the red crystal is translucent and cracked when hit with a hammer this means it is ionic in nature.

Thus, the correct options are option B and option D.

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Answer:

p(momentum) = mass(kg) x velocity (m/s)

Answer:

19 cm

Explanation:

D

Explanation

Given,

Distance covered in 1 lap = 400m

= Distance covered in 2 laps = 400 × 2

=800m

If Jermaine runs 2 whole laps, she comes back to her starting point.

So the answer is 0m

Answer:

5m

Explanation:

Using Pythagoras theorem,

a^2+ b^2=c^2

3^2+4^2=c^2

25=c^2

√(25)=c

5m=c

Slapping a chicken, regardless of the force applied, will not cook it. Cooking requires sustained heat to raise the internal temperature of the chicken to a safe level for consumption.

Cooking involves the application of heat over a period of time to raise the internal temperature of food, ensuring that it reaches a safe level to kill any bacteria or pathogens present. Slapping a chicken, even at high speeds, does not provide the necessary sustained heat required for cooking.

To properly cook a chicken, various cooking methods are used, such as roasting, grilling, frying, or boiling. These methods involve exposing the chicken to a controlled heat source for a sufficient duration. The heat allows the chicken to cook evenly and reach the recommended internal temperature of at least 165°F (74°C) to ensure it is safe to consume.

It's important to follow proper cooking techniques and guidelines to ensure food safety and achieve desirable results. Slapping a chicken, while it may result in physical impact or tenderizing the meat, does not provide the necessary cooking conditions to render the chicken safe, delicious, and suitable for consumption.

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Answer:

A) 1.79ohms

Explanation:

Total resistance of resistors in parallel is given by ;

1/R = 1/R1 + 1/R2 +1/R3

Put in the values and make R the subject

Answer:

120°

Explanation:

Given forces with magnitude F and F

Applying the parallelogram law of vector

Where resultant is given as :

R = √(A^2 + B^2 + 2ABCos Ф

WHERE A and B are two forces with angle Ф

F =√(F^2 + F^2 + 2F * F Cos Ф

Square both sides

F^2 = F^2 + F^2 + 2F^2 CosФ

F^2 - 2F^2 = 2F^2 CosФ

- F^2 = 2F^2 Cos Ф

Divide both sides by 2F^2

- 1 / 2 = CosФ

Cosine(theta) = - 1/2

Ф = cosi^-1 (-1/2)

Ф = 120°

The Speed of water flowing by 2.76 diameter is 0.1634m/s.

Given -

Diameter= 2.76cm

Amount = 20l

time= 1.15 min

The flow of water is continuous and remains unaffected with distribution of mass.

To compute the speed of the water leaving the end of the hose-

V= 2.76 + 1= 3.76cm

For 20 l equivalent length is 3.76cm

For 1 l equivalent length(x) = 3.76/20

x= 0.188

\(Speed = distance /time\)

= 0.188/1.15

=0.1634m/s

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Use formula of resistance for Parallel circuit

(refer to photo)

V = I * R

Voltage = Current * Resistance

I hope this helped.

Answer:

1. Magnetism comes from minerals found inside the Earth.

2. Iron, nickel, and cobalt does stick to magnets.

3. Moving electrons can produce electricity to make a magnet.

4. A compass works because Earth is magnetic.

5. In a magnet, the electrons are in a line.

6. A magnet has a north and south pole.

7. Two north poles will push away from each other.

8. An MRI is a test that uses magnets to see inside of the brain.

9. The Earth’s core is iron and nickel.

10. The north pole and south pole of a magnet attracts.

11. A magnetic field is formed when electricity is flowing.

12. When a compass faces north it is called a magnetic field.

13. Aurora Borealis are the solarwinds glowing at the North Pole.

14. Sunspots are caused by the sun’s magnetic field.

15. In a computer, the __________________________ chips are magnetic

Explanation:

In my class we watched "Bill Nye the Science Guy S02E01 Magnetism" first video that shows up

The answers for the respective statements regarding magnets and magnetism are described below.

1. Magnetism comes from minerals found inside the Earth.

2. Iron, nickel, and cobalt do stick to magnets.

3. Moving electrons can produce electricity to make a magnet.

4. A compass works because Earth is magnetic.

5. In a magnet, the electrons are in a line.

6. A magnet has a north and south pole.

7. Two north poles will push away from each other.

8. An MRI (Magnetic resonance imaging) is a test that uses magnets to see inside of the brain.

9. The Earth’s core is iron and nickel.

10. The north pole and south pole of a magnet attract.

11. A magnetic field is formed when electricity is flowing.

12. When a compass faces north it is called magnetic south.

13. Aurora Borealis is the SolarWinds glowing at the North Pole.

14. Sunspots are caused by the sun’s magnetic field.

15. In a computer, the storage chips are magnetic

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(i) Switch k1 is closed:

The current passing through the circuit is:  0.25 amps

R_total = R1 + R2 = 3 + 5 = 8 ohms

The current passing through the circuit is:

i = V / R_total = 2 / 8 = 0.25 amps

(ii) Switches k1 and k2 are closed:

The current passing through the circuit is: 1.07 amps

1/R_total = 1/R1 + 1/(R2 + R3) = 1/3 + 1/(5 + 0) = 8/15

R_total = 15/8 ohms

The current passing through the circuit is:

i = V / R_total = 2 / (15/8) = 1.07 amps

(iii) Switch k1 is open and k2 is closed:

The current passing through the circuit is: 1.07 amps

1/R_total = 1/R2 + 1/(R1 + R3) = 1/5 + 1/(3 + 0) = 1/5 + 1/3 = 8/15

R_total = 15/8 ohms

The current passing through the circuit is:

i = V / R_total = 2 / (15/8) = 1.07 amps

So the current passing through the circuit depends on which switches are closed, and can range from 0.25 amps to 1.07 amps.

What is current?

Crrent refers to the flow of electric charge through a conductor, such as a wire. It is measured in amperes (A) and is defined as the rate at which electric charge flows past a given point in a circuit. current is caused by the movement of charged particles, such as electrons or ions, through a conductor.

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Answer:

v₃ = 1.334 m/s

Explanation:

This problem can be solved using the law of conservation of momentum:

\(m_{1}u_{1} + m_{2}u_{2} + m_{3}u_{3} = m_{1}v_{1} + m_{2}v_{2} + m_{3}v_{3}\\\)

m₁ = mass of bullet = 8.73 g = 0.00873 kg

m₂ = mass of first block = 1201 g = 1.201 kg

m₃ = mass of second block = 1606 g = 1.606 kg

u₁ = initial speed of bullet = 345 m/s

u₂ = initial speed of first block = 0 m/s

u₃ = initial speed of second block = 0 m/s

v₁ = final speed of bullet = v₃ (since the bullet is embedded in second block)

v₂ = final speed of first block = 0.714 m/s

v₃ = final speed of second block = ?

Therefore,

\((0.00873\ kg)(345\ m/s)+(1.201\ kg)(0\ m/s)+(1.606\ kg)(0\ m/s)=(0.00873\ kg)(v_{3})+(1.201\ kg)(0.714\ m/s)+(1.606\ kg)(v_{3})\)

\(3.0118\ kg.m/s - 0.8575\ kg.m/s = (1.6147\ kg)(v_{3})\\\\v_{3} = \frac{2.1543\ kg.m/s}{1.6147\ kg} \\\)

v₃ = 1.334 m/s

a. The force on object A can be determined using Coulomb's law, which states that the force between two charged objects is proportional to the product of their charges and inversely proportional to the square of the distance between them. Since object B experiences a force of 0.39 N, the force on object A would be the same, as the forces are equal in magnitude and opposite in direction. Therefore, the force on object A is also 0.39 N.

b. We know that object A has twice the charge of object B. Let's denote the charge on object B as qB. Since object A has twice the charge, the charge on object A would be 2qB.

c. The initial acceleration of object A can be calculated using Newton's second law, which states that the force acting on an object is equal to its mass multiplied by its acceleration. We know the force on object A is 0.39 N and its mass is 550 g (0.55 kg). Therefore, the initial acceleration of object A can be calculated as follows:

Force = Mass × Acceleration

0.39 N = 0.55 kg × Acceleration

Solving for acceleration:

Acceleration = 0.39 N / 0.55 kg

The initial acceleration of object A is approximately 0.709 m/s^2.

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A. The exogenous parameter A is the household's relative preference for consumption and leisure. B. The unitary time endowment is the total available time for the representative household. C. The derivatives with respect to c, and l are zeros.

D. 2A√l / √c = W/P. E. n = 1 - [(2/λ)²]. F. Lowering the tax rate on wages support the proposed policy. G. The dominant effect depends on the relative magnitude of the income and substitution effects.

(a) The exogenous parameter A in the household's preference function, u(c,l)=Ac¹/²+l¹/²), represents the household's relative preference for consumption and leisure. It captures the household's subjective valuation of consuming goods and services (c) compared to their enjoyment of leisure (l). A higher value of A implies that the household places a greater emphasis on consumption relative to leisure, indicating a stronger desire for material goods and services.

(b) The unitary time endowment, given by 1 = l + n, represents the total available time for the representative household. It combines the time spent on leisure (l) and the time spent on labor (n). The unitary time endowment indicates that the household has a fixed amount of time available, and they need to allocate it between leisure and work activities. It implies that an increase in leisure time must be accompanied by a decrease in labor time, as the total available time remains constant.

(c) To derive the first-order conditions for consumption (c) and leisure (l), we set up the Lagrangian:

L = Ac¹/² + l¹/² + λ(1 - l - n)

where λ is the Lagrange multiplier associated with the budget constraint.

Taking partial derivatives with respect to c, l, and λ, and setting them equal to zero, we get:

∂L/∂c = A(1/2)c⁻¹/² - λ = 0

∂L/∂l = (1/2)l⁻¹/² - λ = 0

∂L/∂λ = 1 - l - n = 0

(d) The consumption-leisure optimality condition can be derived by equating the marginal rate of substitution (MRS) between consumption and leisure to the wage rate (W) divided by the price level (P):

MRS = (∂u/∂c) / (∂u/∂l) = W/P

Using the partial derivatives from part (c), we have:

(A(1/2)c⁻¹/²) / ((1/2)l⁻¹/²) = W/P

Simplifying, we get:

2A√l / √c = W/P

(e) To solve for the consumption demand function and the labor supply function, we need to express one variable in terms of the other. Let's solve for the consumption demand function first.

From the first-order condition for consumption, we have:

A(1/2)c⁻¹/² = λ

Solving for c, we get:

c⁻¹/² = (λ/A)²

c = (A/λ)²

Now, let's solve for the labor supply function.

From the budget constraint, we have:

1 = l + n

Rearranging, we get:

n = 1 - l

Substituting this expression into the first-order condition for leisure, we have:

(1/2)l⁻¹/² - λ = 0

Solving for l, we get:

l = (2/λ)²

Finally, substituting the expression for l into the labor supply equation, we have:

n = 1 - [(2/λ)²]

(f) To determine whether the labor supply function supports lowering the tax rate on wages as an incentive for households to increase their labor supply, we need to analyze the effect of τ on the labor supply function derived in part (e).

By examining the labor supply function n = 1 - [(2/λ)²], we observe

that a decrease in the tax rate τ would lead to a decrease in the value of λ. Consequently, as λ decreases, the labor supply increases. Therefore, lowering the tax rate on wages would incentivize households to increase their supply of labor, supporting the proposed policy.

(g) The income and substitution effects on labor supply can be analyzed based on the change in the wage rate (W) resulting from the tax rate change (τ). In this case, a decrease in τ would increase the after-tax wage rate (W) received by households.

The dominant effect depends on the relative magnitude of the income and substitution effects. Since the labor supply function n = 1 - [(2/λ)²] is derived from a static model, it does not explicitly capture the substitution and income effects.

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Mugabe gained power by using political strategies, forming alliances, and exploiting his status as a liberation hero within ZANU-PF.

Robert Mugabe, the former president of Zimbabwe, was able to build power through a combination of political strategies and alliances. One key factor was his involvement in the liberation struggle against white minority rule in Rhodesia (now Zimbabwe).

Mugabe emerged as a prominent figure within the Zimbabwe African National Union (ZANU) party, which later merged with the Zimbabwe African People's Union (ZAPU) to form the Zimbabwe African National Union - Patriotic Front (ZANU-PF). Mugabe's role as a liberation hero and his ability to mobilize support among the majority black population of Zimbabwe gave him a strong power base.

Within ZANU-PF, Mugabe strategically positioned himself and gained influence by forming alliances and outmaneuvering rivals. He rose to become the party's leader and played a key role in negotiating the Lancaster House Agreement in 1979, which paved the way for Zimbabwe's independence in 1980. Mugabe became the country's first prime minister and later transformed the position into an executive presidency, consolidating his authority.

Mugabe maintained power through various means, including controlling key institutions such as the military, intelligence agencies, and the ruling party. He also utilized patronage networks, distributing resources and positions to loyal supporters within the party and government. Mugabe's policies, such as the controversial land reform program, further solidified his power base by appealing to nationalist sentiments and redistributing land from white farmers to black Zimbabweans.

However, Mugabe's consolidation of power was also marked by authoritarianism, human rights abuses, and a declining economy. His grip on power faced challenges over the years, including opposition movements, internal party factions, and economic crises. Ultimately, his rule came to an end in 2017 when he was ousted from power following a military intervention.

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The thermal efficiency of the engine is 40%. The correct answer is (a).

The thermal efficiency of a heat engine is given by:

efficiency = (net work output) / (heat input)

We are given the heat input rate as 500 kW and the heat output rate as 300 kW. The net work output rate can be found by subtracting the heat output rate from the heat input rate:

net work output = heat input - heat output = 500 kW - 300 kW = 200 kW

Substituting these values into the efficiency equation, we get:

efficiency = 200 kW / 500 kW = 0.4 = 40%

Option a is correct.

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The power factor of zero leading in a circuit that is entirely capacitive, with the current 90 degrees ahead of the voltage.

An electric circuit's power source exerts pressure known as voltage on charged electrons (current), causing them to flow through a conducting loop and perform tasks like lighting a lamp. Voltage is measured by volts and is simply equal to pressure (V).

Voltage, commonly referred to as electromotive force, is merely the amount of energy contained in one charge. The difference of electric voltage between two places is what is referred to as voltage, in other words. Simple electric charge flow rate is known as current.

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