A sphere and a cylinder have the same radius and height. The volume of the cylinder is. What is the volume of the sphere?.

The energy the earth receives from the sun in one hour is enough energy to meet worldwide demand for a year

It is possible to change the form of energy. For instance, the body of a person can store chemical energy from food until that person uses it as kinetic energy during labor or play. The kinetic energy of moving water in rivers and the chemical energy held in coal and natural gas can be turned to electrical energy, which can then be transferred to light and heat.

In terms of working energy, these can be classified into two categories:

potential or reserve power

working force or kinetic energy

Energy is the potential for doing labour. Modern civilisation is made possible by the capacity to convert energy between different forms and use it to complete activities. People use energy to move around on foot and by bicycle, operate cars on land and in the sea, cook food on stoves, make ice in freezers, light up our homes and offices, make things, and send people into space.

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Answer:

velocity relative to the ground = 2.54 m/s

Explanation:

given data

still water Vx = 2.30 m/s

across a steam Vy = 1.20 m/s

solution

we get here first velocity relative to the ground is express as

velocity = \(\sqrt{Vx^2+Vy^2}\)      ...............1

put here value and we get

velocity  = \(\sqrt{2.3^2+1.20^2}\)

velocity = 2.54 m/s

The angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

To determine the angles θ and θ' in the given scenario, we can use Snell's Law, which relates the angles of incidence and refraction to the refractive indices of the media involved. Snell's Law can be stated as follows:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Where:

n₁ is the refractive index of the medium of incidence (in this case, air with a refractive index close to 1),

θ₁ is the angle of incidence,

n₂ is the refractive index of the medium of refraction (in this case, linseed oil with a refractive index of 1.48), and

θ₂ is the angle of refraction.

Let's solve for the unknown angles θ and θ' using the given information.

Given:

Angle of incidence θ = 1°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of refraction θ₂.

Using Snell's Law, we have:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

sin(θ₁) = n₂ * sin(θ₂)

Plugging in the values:

sin(1°) = 1.48 * sin(θ₂)

We can now solve for θ₂:

θ₂ = arcsin(sin(1°) / 1.48)

Calculating this value, we find:

θ₂ ≈ 0.688°

Now, let's determine the angle θ'.

Given:

Angle of refraction θ₂ = 0.688°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of incidence θ'.

Using Snell's Law, we have:

n₂ * sin(θ₂) = n₁ * sin(θ')

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

n₂ * sin(θ₂) = sin(θ')

Plugging in the values:

1.48 * sin(0.688°) = sin(θ')

Solving for θ', we find:

θ' = arcsin(1.48 * sin(0.688°))

Calculating this value, we get:

θ' ≈ 1.988°

Therefore, the angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

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Explanation:

simply add the length

10+21 = 31

distance is the distance travelled by an object

for displacement, its gonna be the length between the beginning point and end point which mean u need to substract 21 and 10.

so distance, u just need to add

Light travels faster in air than glass

Answer:

\(\boxed{Air}\)

Explanation:

Light travels faster in the air than in glass because glass has a higher refractive index than air.

glass is solid and more packed than air, so the light will have more space and less resistance in the air to travel than in glass.

\(-TheAnimegirl-\)

The frequency observed by the observer on the left (fL) is higher than the frequency observed by the observer on the right (fR). Here option A is the correct answer.

The observed frequency, fL, of the sound heard by the observer on the left is higher than the observed frequency, fR, heard by the observer on the right. This phenomenon is known as the Doppler effect.

When a source of sound is moving towards an observer, the sound waves are compressed, resulting in a higher frequency. Conversely, when the source of sound is moving away from an observer, the sound waves are stretched, leading to a lower frequency.

In this case, as the police car is moving towards the observer on the left, the sound waves are compressed, causing an increase in frequency. Therefore, the observer on the left hears a higher frequency, fL. On the other hand, the observer on the right experiences the sound waves stretching due to the car moving away, resulting in a lower frequency, fR. Thus, the correct answer is A. fL > fR.

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The distinction between mass and weight is that mass measures inertia while weight measures force.

The force acting on an object owing to acceleration or gravity is defined as its weight. Weight is defined as a vector quantity in certain standard textbooks, as the gravitational force exerted on the item. Others define weight as a syllable.

What is Mass?

A body's mass is an intrinsic attribute. Until the discovery of the atom and particle physics, it was thought to be tied to the amount of matter in a physical body.

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Since cost = 0 €, the value of sinθ will be 1.  Recall that the Pythagorean identity for sine and cosine states that sin²θ + cos²θ = 1. So, sin²θ = 1 - cos²θ. Given cost=0 €,cosθ=0. Substituting cosθ = 0, we get;sin²θ = 1 - cos²θ.  sin²θ = 1 - 0² = 1Therefore,sinθ = √1 = 1  

This means that sin28 = 1  Since sin20 lies in the first quadrant (0° to 90°), it will have a positive value. To determine sin20, we can use a calculator or reference a trigonometric table. To the nearest tenth of a degree, sin20 is 0.3 and it lies in the first quadrant.

An identity that expresses the Pythagorean theorem in terms of trigonometric functions is known as the Pythagorean trigonometric identity, or simply the Pythagorean identity. It is one of the fundamental relations between the sine and cosine functions, along with the sum-of-angles formulas. The angle can be any real value, and the equation is s i n 2 + c o s 2 = 1. Given both the sine value and the quadrant in which the angle is located, we can use the Pythagorean identity to determine the angle of cosine.

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To maximize the objective function p with the given constraints, we use linear programming by identifying the feasible region.

Finding corner points, evaluating p at each point, and selecting the point with the maximum value of p.In this case, the given constraints are x = 0, y = 0, 2x + 2y = 4, and x + y = 8. To maximize the objective function p, we follow these steps:Identify the feasible region by graphing the constraints on a coordinate plane.

The corner points, which represent the vertices of the feasible region.Evaluate the objective function p at each corner point.Select the point with the maximum value of p as the optimal solution that maximizes p while satisfying the given constraints.

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The deposits on a properly burning spark plug should be very little or none. A spark plug works as a sensor in an engine and the deposits indicate the overall health of the engine.

Deposits on a spark plug are often black, brown, or greyish in color. When the deposits are more, it may indicate that the engine is not running as efficiently as it should or that it has some problem causing the engine to misfire. If the engine is not running efficiently or is not burning fuel, it can cause the spark plug deposits to build up quickly. Therefore, it is important to keep the spark plugs clean and free from excessive deposits to ensure optimal engine performance.

The deposits on a properly burning spark plug should be very little or none. A spark plug works as a sensor in an engine and the deposits indicate the overall health of the engine.

When the spark plug is functioning properly, it burns off any fuel or oil that comes into contact with it during the combustion process. This results in very little or no deposit buildup on the spark plug. However, if the engine is not running efficiently, such as when it is misfiring or not burning fuel properly, it can cause the spark plug deposits to build up quickly.There are several types of deposits that can accumulate on a spark plug. Carbon deposits are typically black in color and are caused by incomplete combustion of fuel. Oil deposits, on the other hand, are typically brown or greyish in color and are caused by worn piston rings or valve seals, which allow oil to seep into the combustion chamber and burn with the fuel. Deposits can also indicate that the engine is running too hot, which can be caused by a malfunctioning cooling system or a lean air-fuel mixture.

A properly burning spark plug should have very little or no deposits. Excessive deposits can indicate that the engine is not running efficiently and may require maintenance or repair. It is important to keep the spark plugs clean and free from excessive deposits to ensure optimal engine performance.

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The rock's speed at the bottom of the hole would be 14 meters per second.

The rock's speed as it hits the bottom of the hole depends on a few factors, such as the height of the hole and the acceleration due to gravity.

To find the speed of the rock at the bottom of the hole, we can use the formula:

Where v is the speed, g is the acceleration due to gravity (9.8 m/s^2), and h is the height of the hole.

So, if we know the height of the hole, we can plug it into the formula and find the speed of the rock at the bottom of the hole.

For example, if the hole is 10 meters deep, the speed of the rock at the bottom of the hole would be:

v = √(2 * 9.8 * 10)

v = √(196)

v = 14 m/s

So the rock's speed at the bottom of the hole would be 14 meters per second.

Note that the units of speed will depend on the units used for the height and acceleration due to gravity. In this example, we used meters and meters per second squared, so the speed is in meters per second.

If the height was given in feet and the acceleration due to gravity in feet per second squared, the speed would be in feet per second.

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Answer:

C

Explanation:

There is a decrease in temperature and daylight and plants produce less food.

Please mark brainliest!!

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Answer:

At point A, the comet has the least kinetic energy because the comet is resting. 3. From point B to point D its orbit's potential energy is decreasing and its kinetic energy is increasing meaning it's moving more and more

A drop in blood pH is likely to cause a faster breathing rate. This statement is false.

An increase, not a decrease, in blood pH leads to a slower breathing rate. This is due to the fact that an increase in blood pH, also known as alkalosis, causes a decrease in the concentration of carbon dioxide (CO2) in the blood. This decrease in CO2 causes the respiratory centre in the brain to decrease the rate and depth of breathing, which helps to retain more CO2 in the body and return the blood pH towards normal.

Conversely, a decrease in blood pH, also known as acidosis, leads to an increase in the respiratory rate and depth in order to eliminate excess CO2 from the body, which helps to raise the blood pH towards normal.

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False. A drop in blood pH is more likely to cause a faster breathing rate, not a slower one.

This response is known as respiratory compensation and is one of the body's ways of restoring the acid-base balance.

The acid-base balance of the body is tightly regulated to ensure that pH levels remain within a narrow range.

When there is a drop in blood pH (i.e., an increase in blood acidity), it is typically due to an excess of carbon dioxide (CO2) in the bloodstream.

This excess CO2 combines with water to form carbonic acid, which dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-). The resulting increase in H+ ions leads to a drop in pH.

To counteract this decrease in pH, the body triggers respiratory compensation.

The respiratory center in the brainstem detects the increase in H+ ions and stimulates the respiratory muscles to increase breathing rate and depth.

This increased ventilation helps to remove excess CO2 from the body, which in turn reduces the amount of carbonic acid and H+ ions in the blood. As a result, the pH level of the blood returns to normal.

Conversely, an increase in blood pH (i.e., a decrease in blood acidity) can lead to a decrease in breathing rate, as there is less stimulation of the respiratory center.

This response is known as hypoventilation and is also a way for the body to regulate pH levels.

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The approximate TOD of the victim is Maybe around 4:30 pm.

The liver temperature can provide a more accurate representation of the genuine core body temperature, hence it is ideal to take the temperature either rectally or by monitoring the liver temperature.To do this, a tiny incision must be made in the right upper belly, and the thermometer must be inserted into the liver tissue.

This stiffening process, known as rigor mortis, occurs at a fairly known time, making it possible to predict when someone will pass away.In overall: If the body is warm and there is no rigidity, the time of death was less than three hours ago.If the body is stiff and warm, death happened 3 to 8 hours earlier.

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The financial advantage of discontinuing the Beta product line would be a disadvantage of $9,840,000. The financial advantage of buying 100,000 units from the supplier instead of making them would be an advantage of $4,700,000.The financial advantage of buying 75,000 units from the supplier instead of making them would be an advantage of $3,525,000.

To calculate the financial advantage or disadvantage of discontinuing the Beta product line, we need to compare the costs and revenues associated with the current situation and the proposed scenario.

Currently, the company produces and sells 80,000 Betas and 100,000 Alphas. If the Beta product line is discontinued, the sales representatives can increase Alpha sales by 13,000 units.

In the current situation:

Revenue from Beta sales = 80,000 units × $162 = $12,960,000

Revenue from Alpha sales = 100,000 units × $240 = $24,000,000

Total revenue = $12,960,000 + $24,000,000 = $36,960,000

In the proposed scenario:

Increased Alpha sales = 113,000 units × $240 = $27,120,000

Therefore, the financial advantage or disadvantage can be calculated as:

Financial Advantage = Revenue in proposed scenario - Revenue in current situation

Financial Advantage = $27,120,000 - $36,960,000 = -$9,840,000

The financial advantage of discontinuing the Beta product line would be a disadvantage of $9,840,000.

To determine the financial advantage or disadvantage of buying 100,000 units from the supplier instead of making them, we need to compare the costs of production with the purchase cost from the supplier.

Cost of producing 100,000 Alphas:

Direct materials cost = 100,000 units × $35 = $3,500,000

Direct labor cost = 100,000 units × $48 = $4,800,000

Variable manufacturing overhead = 100,000 units × $27 = $2,700,000

Traceable fixed manufacturing overhead = 100,000 units × $35 = $3,500,000

Variable selling expenses = 100,000 units × $32 = $3,200,000

Common fixed expenses = 100,000 units × $30 = $3,000,000

Total cost of producing 100,000 units = $3,500,000 + $4,800,000 + $2,700,000 + $3,500,000 + $3,200,000 + $3,000,000 = $20,700,000

Cost of buying 100,000 units from the supplier = 100,000 units × $160 = $16,000,000

Therefore, the financial advantage or disadvantage can be calculated as:

Financial Advantage = Cost of producing - Cost of buying

Financial Advantage = $20,700,000 - $16,000,000 = $4,700,000

The financial advantage of buying 100,000 units from the supplier instead of making them would be an advantage of $4,700,000.

Similarly, to determine the financial advantage or disadvantage of buying 75,000 units from the supplier instead of making them, we follow the same calculations as in question 9, but with the quantities adjusted accordingly.

Cost of producing 75,000 Alphas:

Direct materials cost = 75,000 units × $35 = $2,625,000

Direct labor cost = 75,000 units × $48 = $3,600,000

Variable manufacturing overhead = 75,000 units × $27 = $2,025,000

Traceable fixed manufacturing overhead = 75,000 units × $35 = $2,625,000

Variable selling expenses = 75,000 units × $32 = $2,400,000

Common fixed expenses = 75,000 units × $30 = $2,250,000

Total cost of producing 75,000 units = $2,625,000 + $3,600,000 + $2,025,000 + $2,625,000 + $2,400,000 + $2,250,000 = $15,525,000

Cost of buying 75,000 units from the supplier = 75,000 units × $160 = $12,000,000

Therefore, the financial advantage or disadvantage can be calculated as:

Financial Advantage = Cost of producing - Cost of buying

Financial Advantage = $15,525,000 - $12,000,000 = $3,525,000

The financial advantage of buying 75,000 units from the supplier instead of making them would be an advantage of $3,525,000.

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Answer:

I can help with the last question.

Explanation:

The force from the ball on the left ball will hit the ball next to it, bringing the force all the way to the right ball, and vice versa. Have a great day!

Answer:

gravity is pulls objects to the center of the earth.

friction is slows or stops motion when objects rub together.

magnetism is pushes or pulls objects containing iron or other metals.

Answer:

Baking a cake requires heat to be applied to the batter in order for it to cook and chemically change into cake. The energy or heat applied is absorbed by the ingredients, so this represents an endothermic reaction.

Explanation:

that's the sample answer, hope it helps

The batter needs to be heated in order to cook and chemically transform into a cake when it is baked. An endothermic reaction is taking place because the energy or heat applied is being absorbed by the constituents.

The quantitative characteristic that is transferred to a body or a physical system in physics is referred to as energy. It manifests itself as heat and light, as well as the act of doing work. Energy is a resource that is conserved; it can only be changed from one form to another and cannot be created or destroyed, according to the law of conservation of energy. The SI unit of energy measurement is the joule (J).

According to the question, there are various types of reactions two of which are endothermic reactions and exothermic reactions.

In an endothermic lot of energy is absorbed and in opposition to the exothermic reaction lot of energy is released.

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Answer:

3+7=          7x3=                                21➗7=          

Explanation:

3+7= 10              7 8 9 10

7x3= 21                  7 14 21

21➗7=3        21 14 7

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The nuclear reaction becomes:

U₉₂²³⁸ → Th₉₀²³⁴+ α⁴₂

Thus, here (i) 234 and (ii) 90

Uranium-238 decays to thorium-234 via alpha decay. (The numbers after the chemical names indicate the number of protons and neutrons.) Uranium-238 loses two protons and two neutrons in this process, forming the isotope thorium-234.

Reactors based on thorium are safer since the reaction is simple to stop and does not need to be carried out under intense pressure. When compared to uranium reactors, thorium reactors produce significantly less waste, and the waste produced is far less radioactive and far shorter in duration.

Now, here (i) 234 and (ii) 90

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Answer:

(i) 234 and (ii) 90

The time required for the bacteria concentration to be reduced to 15ppm using the Newton's method is 8.12 hours.

Finding the roots of a differentiable function F, which are answers to the equation F (x) = 0, using Newton's technique is an iterative process. To solve this problem, we can use Newton’s method with an initial guess of t=6 and a stopping criterion of 1% (tol=0.01). The formula for Newton’s method is:

xₙ₊₁ = xₙ - f(xₙ)/f'(xₙ)

where xₙ₊₁ is the next approximation, xₙ is the current approximation, f(xₙ) is the function value at xₙ, and f'(xₙ) is the derivative of the function at xₙ.

For this problem, we have:

f(t) = 77 \(e^{-1.5 t}\) +20 \(e^{-0.08 t}\) - 15

f’(t) = -115.5 \(e^{-1.5 t}\) - 1.6 \(e^{-0.08 t}\)

After using the Newton’s method with an initial guess of t=6 and a stopping criterion of 1% (tol=0.01), the results are as follows:

t = 4.139 hours

You can check your result with fsolve function in Python’s scioy library.

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Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

Joules, volts, and electron volts (eV) are units used to measure different types of physical quantities related to energy and electricity.

Joules (J) measure energy, which can be in various forms such as potential, kinetic, or thermal energy. It is a derived unit in the International System of Units (SI) and is defined as the amount of work done when a force of one newton displaces an object by one meter in the direction of the force.Volts (V) measure electric potential difference, also known as voltage, between two points in an electric circuit. It indicates the amount of work needed to move a unit of electric charge between these points. One volt is equivalent to one joule of energy per coulomb of charge.Electron volts (eV) measure energy on a smaller scale, typically at the atomic or subatomic level. It is the amount of kinetic energy gained or lost by a single electron when it is accelerated through an electric potential difference of one volt. It is commonly used in particle physics and quantum mechanics to express the energies of particles, atoms, and other small-scale phenomena.In summary, joules measure energy, volts measure electric potential difference, and electron volts measure energy on a smaller scale, particularly for atomic and subatomic particles.

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Answer:

4:; work

Explanation:

as energy is defined via work, the SI unit of energy is the same as the unit in work.

Energy is measured in the same units as work. Hence, option (4) is correct.

The capacity to do work is energy. Energy can only be changed from one form to another; it cannot be created or destroyed. Energy is measured in Joules, the same unit used to measure work. There are several sources of energy, and as a result, there are various forms of energy.

There are two types of energy: kinetic and potential. Kinetic energy is the energy that is in motion, whereas potential energy is the energy that is stored in an object and is determined by the amount of work that is required.

A force must be applied in order for work to be done, and there must also be motion or displacement in the force's direction. The amount of force multiplied by the distance moved in the force's direction is known as the work done by a force acting on an item.

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When compared to each other, radio waves are produced by the movement of negatively-charged electrons whereas gamma rays are produced in nuclear reactions.

The back-and-forth movement of negatively charged electrons inside an antenna produces radio waves.

Radio waves have the longest wavelengths of all the waves in the electromagnetic spectrum. Radio waves are typically found at frequencies of 300 gigahertz and below.

On the other hand, nuclear explosions, lightning, and radioactive decay generate gamma rays.

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Answer:

According to my calculations it equals to 16 pints

Explanation:

You know that there is a calculator online for this stuff right?

Answer:

Nuclear energy

Explanation:

The nucleus holds the energy together

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

Answer:

See below

Explanation:

The half life is 12 year, so after 12 years HALF Of the sample will be gone and half will be left

1/2   *   1 x 10^16  =   .5 x 10^16   = 5 x 10^15 nuclei

When air rises in a low-pressure system, it can lead to the formation of clouds and precipitation, such as rain or snow. The rising air also cools and condenses, releasing latent heat, which can further contribute to the development of the storm.

A low-pressure system is a weather pattern characterized by a region of lower atmospheric pressure compared to the surrounding areas. It is often associated with unsettled and stormy weather.

Clouds are formed when moist air rises and cools, causing water vapour to condense into tiny water droplets or ice crystals. This process occurs when the temperature of the air decreases, either because it is rising, or because it is mixing with cooler air.

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