The outside wall of a building consists of an inner layer of gypsum plaster, k = 0.17 W ny¹ K¹ and 1.5 cm thick, placed on concrete blocks, k = 1.0 W m¹ K¹ and 20 cm thick. The outside of the wall is face brick, k = 1.3 W m¹ K¹ and 10 cm thick. The heat transfer coefficients on the inside and outside surfaces of the wall are 8.35 and 34.10 W m² K¹, respectively. The outside air temperature is -10 °C while the interior air temperature is 20 °C. Determine: (a) The rate of heat transfer per unit area (58.32 W/m²) (13.01 °C) (b) The surface temperature of the inner surface of the wall.

Answer: The human eye and brain transform light into color. Allowing us to see them.

Explanation: Light receptors within the eye turn light into color. The color that is reflected off of an object, is what we see. Hope this helps.

The apparent colors of the objects we see causes due to reflection of the light which they absorb and emit.

Reflection is the change in direction of a wavefront which occurs at an interface present between the two different media so that the wavefront of the wave returns into the medium from which it has been originated. Common examples of reflection include the reflection of light, sound wave and water waves.

The color of an object is the wavelengths of light waves that it reflects. The reflection is determined by the arrangement of electrons in the atoms of that substance which will absorb and re-emit photons of particular energy levels according to the quantum laws.

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Answer:

I dont know answer Sorry For that thank u

The spatial separation between the 2 events is 13.416 × 10⁸ m

In space time-interval, the invariance of line element explains that if there are two inertial reference frames S and S', the spatial separation is invariant in all inference frames.

i.e.

\(\mathbf{\Big [ [\Delta x]^2 -[c^2 \Delta t ^2] \Big]_{frame \ 1} = \Big [[\Delta x]^2 -[c^2 \Delta t ^2] \Big]_{frame\ 2} }\)

\(\mathbf{[\Delta x_1]^2 -[c^2 \Delta t_1 ^2] = [\Delta x_2]^2 -[c^2 \Delta t_2 ^2] }\)

where;

\(\mathbf{[0]^2 -[c^2 (4) ^2] = [\Delta x_2]^2 -[c^2 (6) ^2] }\)

\(\mathbf{ [\Delta x_2]^2 =36(c^2) - 16(c^2)]}\)

\(\mathbf{ [\Delta x_2]^2 =20(c^2)}\)

\(\mathbf{ \Delta x_2 = \sqrt{20} \ c}\)

here;

\(\mathbf{ \Delta x_2 = \sqrt{20} \times 3 \times 10^8}\)

\(\mathbf{ \Delta x_2 =13.416 \times 10^8 \ m}\)

Therefore, we can conclude that the spatial separation between the 2 events is 13.416 × 10⁸ m

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Answer:

Please refer the the definition of an electric current below

Explanation:

Electric current is the flow of electric charge in a circuit. It is defined as the rate at which electric charge flows through a given area of a conductor. The flow of electric charge is caused by the motion of electrons, which are negatively charged particles that exist in most materials.

Electric current is generated by applying a potential difference, or voltage, across a conductor. The voltage causes a difference in electric potential energy between the ends of the conductor, and this difference drives the flow of electrons through the conductor. The electrons move from the negative terminal of the voltage source towards the positive terminal, and as they move, they transfer energy to the conductor in the form of heat or light.

The amount of current that flows through the conductor is determined by the voltage applied and the resistance of the conductor. Resistance is a property of the conductor that resists the flow of current, and it is measured in ohms. According to Ohm's law, the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance.

This relationship can be expressed as

\(\sf I=\dfrac{V}{R}\)

where
\(\sf I\) is the current in amperes

\(\sf V\) is the voltage in volts

\(\sf R\) is the resistance in ohms

The position-time graph gives the position of an object at any instant of time. The y-intercept gives the position of the object at the instant when the time is zero. That is, the y-intercept gives the initial position of the object.

Thus the given statement is false.

The amount of substance affects the total energy through the concept of molar heat capacity. Molar heat capacity is defined as the amount of heat required to raise the temperature of one mole of a substance by one degree Celsius. Therefore, the more substance there is, the more heat energy is required to raise its temperature.

For example, if we have one mole of a substance, it will require a certain amount of energy to raise its temperature by one degree Celsius. However, if we have two moles of the same substance, it will require twice as much energy to raise the temperature of the larger amount by the same one degree Celsius.

Additionally, the amount of substance can affect the total energy through the concept of specific heat capacity. Specific heat capacity is defined as the amount of heat required to raise the temperature of one unit of mass (usually one gram) of a substance by one degree Celsius. Therefore, if we have more mass of a substance, it will require more energy to raise the temperature of the larger amount by the same one degree Celsius.

In summary, the amount of substance affects the total energy through the concepts of molar heat capacity and specific heat capacity, which determine how much energy is required to raise the temperature of a given amount of substance.

There are several barriers that prevent energy efficiency from reaching its full potential. These barriers include upfront costs, lack of information and awareness, split incentives, market failures, and policy and regulatory challenges.

1. Upfront Costs: Investing in energy-efficient technologies and systems often requires a significant upfront investment. Many individuals and businesses may be hesitant to incur these costs, especially if they have limited financial resources or short-term perspectives.

2. Lack of Information and Awareness: Limited knowledge about energy-efficient practices and technologies can hinder adoption. People may not be aware of the potential energy savings or the available options to improve efficiency.

3. Split Incentives: In situations where landlords own the buildings but tenants pay the energy bills, there is a split incentive problem. Landlords may have little motivation to invest in energy efficiency measures since they don't directly benefit from the reduced energy costs.

4. Market Failures: Market failures, such as information asymmetry and externalities, can impede energy efficiency. For example, consumers may not have access to accurate information about the energy efficiency of products or may not consider the long-term cost savings.

5. Policy and Regulatory Challenges: Inconsistent or inadequate policies and regulations can hinder energy efficiency efforts. Insufficient incentives, lack of enforcement, and complicated procedures for accessing incentives or grants can discourage investment in energy efficiency.

Overcoming these barriers requires a multi-faceted approach involving public awareness campaigns, financial incentives, targeted policies, and streamlined regulations. Governments, businesses, and individuals need to collaborate to address these barriers and unlock the full potential of energy efficiency, leading to significant energy savings and environmental benefits.

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Answer:

gravitational force .. .. .

Explanation:

Answer:

120km

Explanation:

it will covered 120km

The processes under chemical change are: cooking an egg, fireworks exploding, and rusting of a metal tool.

The processes under physical change are: melting ice, evaporating puddle of water, and dissolving of salt in water.

Given:

The following process:

To find:

The classify the processes in whether it does or does not produce a new substance.

Solution:

Chemical change, due to change in atomic arrangement egg get solidified on cooking, a new substance is formed.

Physical change, change in the state of matter is taking from solid to liquid, no new substance is formed.

Chemical change. formation of carbon dioxide gas and sound energy, anew substance formed

Physical change, change in the state of matter is taking from liquid to gas, no new substance is formed.

Chemical change, formation of oxides on the surface of the metal tool due to reaction between air and metal, a new substance is formed.

Physical change, ions of salt in the solid state are changing into aqueous ions with no formation of new substance, no new substance is formed.

The processes under chemical change are: cooking an egg, fireworks exploding, and rusting of a metal tool.

The processes under physical change are: melting ice, evaporating puddle of water, and dissolving of salt in water.

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With 4.3 m/s velocity, is the cheetah running.

velocity= distance/time

distance=27.6 m

time=6.3 s

velocity=27.6 m/6.3 s

velocity=4.3 m/s

A vector number known as velocity describes "the pace at which an item changes its location." Imagine a person moving quickly, taking one stride ahead, one step back, and then beginning from the same place each time. A vector quantity is velocity. As a result, velocity is aware of direction. One must consider direction while calculating an object's velocity. Saying that an item has a velocity of 55 miles per hour is insufficient. The direction must be included in order to adequately characterize the object's velocity. Simply said, the velocity vector's direction corresponds to the motion of an item.

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Answer:

trigonometry (guessing)

Explanation:

ellipse: is the shape of an orbit : looks like an oval

periapsis : shortest distance between something like the moon and the planet its orbiting around like the earth

parallax is triangulation. like how gps works. looking at a star one day and then looking at it again 6 months later, an astronomer can see a difference in the viewing angle for the star. With trigonometry, the different angles yield a distance. This technique works for stars within about 400 light years of earth

https://science.howstuffworks.com/question224.htm

By comparing the intrinsic brightness to the star's apparent brightness we can calculate the distance of stars

1/r^2 rule states that the apparent brightness of a light source is proportional to the square of its distance.Jan 11, 2022

https://www.space.com/30417-parallax.html

alternative distance measurement for stars used by most astronomers is the parsec. A star with a parallax angle of 1 arcsecond has a distance of 1 parsec, or 1 parsec per arcsecond of parallax, which is about 3.26 light years

blossoms.mit.edu

.

Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 50 × 3 = 150

We have the final answer as

Hope this helps you

Answer:

It depends on the weight or mass or how big the ball is.

If a ball is dropped from a height of 2 meters then it would take 0.638 seconds for this ball to reach the ground.

The rate of change of the velocity with respect to time is known as the acceleration of the object.

As given in the problem, If a ball is dropped from a height of 2 meters then we have to find out how long it would take  this ball to reach the ground,

The initial velocity of the ball being dropped = 0

the height of dropping = 2 meters

acceleration = 9.81 meters/second²

By using the second equation of the motion,

s = ut + 0.5at²

2 =0 + 0.5×9.81×t²

t² = 2/(.5×9.81)

t = 0.638 seconds

Thus, the time taken by the ball to drop down from a two meters height would be 0.638 seconds.

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The velocity of the wave having a frequency of 458 Hz and a wavelength of 0.74 m is 338.92 m/s

The velocity of a wave is related to its frequency and wavelength according to the following equation:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

v = λf

v = 0.74 × 458

v = 338.92 m/s

Thus, the velocity of the wave is 338.92 m/s

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The voltage drop across the 10.0 Ω resistor is c)120V

A voltage drop is an amount the voltage lowers when crossing a component from the negative side to the positive side in a series circuit. If you positioned a multimeter across a resistor, the voltage drop would be the quantity of voltage you are reading.

hence, the voltage drop across the 10.0 Ω resistor = 120 V

correct answer c) 120 V

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Explanation:

To me, it's option 1

Newton third law states that Every action produces an equal and opposite reaction. Hence, given the fact that the engine is on, it should be producing a constant force every time so, the speed should be constant as the force propelling it is the same

a) D2022 = $1.9975, D2023 = $2.27715, D2024 = $2.60554, D2025 = $2.98868, D2026 = $3.43243

b) Po = $13.63

c) Dividend yield = 13.85%, Capital gains yield = 74.52%, Expected total return = 88.37%. Dividend yield = 17.89%, Capital gains yield = -23.29%, Expected total return = -5.40%.

a) Dividend is the distribution of earnings to shareholders. Expected dividend for each year can be calculated as follows:

D2022 = D0 (1 + g) = $1.75 (1 + 0.14) = $1.9975

D2023 = D2022 (1 + g) = $1.9975 (1 + 0.14) = $2.27715

D2024 = D2023 (1 + g) = $2.27715 (1 + 0.14) = $2.6055415

D2025 = D2024 (1 + g) = $2.6055415 (1 + 0.14) = $2.98868161

D2026 = D2025 (1 + g) = $2.98868161 (1 + 0.14) = $3.432429195

b) The present value of dividends expected in 2022, 2023, 2024, 2025 and 2026 can be calculated using the following formula:

PVD = D / (1 + r)t

where

PVD = present value of dividends expected

D = dividend expected in a future year

t = number of years from now

r = required rate of return

PVD2022 = $1.9975 / (1 + 0.12)¹ = $1.77700934579

PVD2023 = $2.27715 / (1 + 0.12)² = $1.88843867485

PVD2024 = $2.6055415 / (1 + 0.12)³ = $1.99719364693

PVD2025 = $2.98868161 / (1 + 0.12)⁴ = $2.10928913223

PVD2026 = ($3.432429195 + ($3.432429195 * 1.05)) / (1 + 0.12)⁵ = $2.25661605368

The present value of the stock price that should exist at the end of 2026 can be calculated using the constant growth equation:

Po = D1 / (r - g)

where

Po = price of stock today

D1 = dividend expected at the end of 2026r = required rate of return

g = expected growth rate

Po = $3.60484320761

Total present value of all dividends expected plus the present value of the stock price at the end of 2026 can be calculated using the formula:

Total PV = PVD2022 + PVD2023 + PVD2024 + PVD2025 + PVD2026 + PoTotal PV = $1.77700934579 + $1.88843867485 + $1.99719364693 + $2.10928913223 + $2.25661605368 + $3.60484320761 = $13.6333900619

The value of the stock today, Po, is $13.63.

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Answer:Because it likes to repel and attract opposites

Answer: True

Explanation:

Answer:

false

Explanation:

hope this help (brainlist plz)

Answer:

Roundworms:

The size of roundworms ranges from microscopic to as long as a meter long. Most roundworms have a hard, sharp lance on their head, and some have bristles on the head. Most of the roundworms are protected by an adaptable yet solid, furrowed body covering.  

Roundworms are very primitive living beings, having no respiratory or circulatory system of a host. They have an empty body with two openings at the closures. Be that as it may, the head isn't particular or recognizable to the unaided eye.  

Roundworms reproduce sexually and can finish their life cycle in immature puppies, however as the little pupps immunity system develops (for the most part by a half-year-old enough), the larval phases of the roundworm will become captured and will encyst (become encased in a sore) in the puppy's muscles. They can stay encysted in the pooch's tissues for a considerable length of time or years.

The length of the cylindrical bar of cast iron is approximately 77259.6 meters.

To find the length of the cylindrical bar of cast iron, we can use the formula: Volume = Base Area * Length

As per data,

Base Area = 1.50 cm²

Density = 7.76 g/cm³

Mass = 898 kg

First, we need to convert the base area from cm² to m²:

1 cm² = 0.0001 m²

Base Area = 1.50 cm² * 0.0001 m²/cm²

Base Area = 0.00015 m².

Next, we need to convert the density from g/cm³ to kg/m³:

1 g/cm³ = 1000 kg/m³

Density = 7.76 g/cm³ * 1000 kg/m³

Density = 7760 kg/m³.

Now, we can rearrange the formula to solve for the length:

Length = Mass / (Base Area * Density)

Length = 898 kg / (0.00015 m² * 7760 kg/m³)

Length ≈ 77259.6 m.

Therefore, the length of the cylindrical bar is approximately 77259.6 meters.

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The false statement is B) Homolytic bond cleavage yields neutral radicals in which each atom gains one electron.

In homolytic bond cleavage, each atom retains one electron from the shared pair of electrons, resulting in the formation of two neutral radicals, where each atom retains its original number of electrons.

No atoms gain or lose electrons in this process.

In a homolytic bond cleavage, a covalent bond is broken, and the shared pair of electrons is split equally between the two atoms involved in the bond.

This results in the formation of two neutral radicals, with each atom retaining one of the electrons from the shared pair.

A radical is a chemical species characterized by the presence of an electron that is unpaired, meaning it does not have a partner electron with which it forms a complete pair. When a covalent bond is homolytically cleaved, each atom involved in the bond gains one electron, resulting in the formation of two radicals.

These radicals are highly reactive due to the presence of the unpaired electron, which makes them prone to participate in further chemical reactions.

It's important to note that in homolytic bond cleavage, there is no transfer of electrons from one atom to another.

Instead, the bond is broken in a way that allows each atom to retain one of the electrons, leading to the formation of two neutral radicals.

Therefore, statement B, which suggests that each atom gains one electron, is false.

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Answer:

the constant force applied by Kitty is 8 N.

Explanation:

Given;

work done by Kitty, W = 32 J

distance moved by Kitty's trolley, d = 4 m

Let the constant force applied by Kitty = F

The work done by Kitty is calculated as follows;

W = F x d

F = W / d

F = 32 / 4

F = 8 N.

Therefore, the constant force applied by Kitty is 8 N.

Non - Metals:

Some terms:

★ Malleable: This means that metals can be beaten into thin sheets with hammer.

★ Ductile: This means that metals can be drawn into thin wires.

★ Brittle: This means that non-metal break into pieces on hammering.

★ Sonorous: This means capable of producing a ringing sound.

Answer: velocity

Explanation:

Your slope is calculated as \(\frac{y_{2}-y_{1}}{x_{2}-x_{1}} =\frac{displacement}{time}\), which equals velocity.

The output at the BAT terminal is DC voltage.

A generator typically produces AC voltage but since most batteries and appliances uses DC voltage therefore through the use of diodes it is converted into DC voltage

A diode is an electrical component that allows the flow of current in only one direction. In circuit diagrams, a diode is represented by a triangle with a line across one vertex. The most common type of diode uses a p-n junction.

Six diodes are located in the end frame assembly nearest the slip rings.

Three of these diodes are negative and are mounted directly in the end

frame.

Three positive diodes are mounted into a heat sink, which is insulated from the end frame. These six diodes (three positive and three negative), change AC from the stator windings to a flow of DC, which appears at the output terminal of the alternator.

Thus, the rotor, stator, and diodes act together to produce DC voltage which appears at the BAT (output) terminal.

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Answer:

d

Explanation:

Answer:true

Explanation:

The moon’s orbit is closer to Earth is the event which occurs during high tide.

This occurs once in a month and is the phenomenon in which the moon is

closest to the Earth. This brings about an increase in the tide levels of the

water bodies.

This is the reason why the option B is the most appropriate option as the

moon’s orbit being closer to Earth also signifies a close proximity between

the moon and the earth

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Answer: The answer is: b) The moon’s orbit is closer to Earth.

Explanation: I have my ways :>

Have a great day!

-Sunny