Do you hear sounds around you as one frequency at a time or as many frequencies at once?

The refraction is the phenomena of bending of light towards or away from the normal when the light enter from one medium to another.

The light when travels from denser to rarer medium the light bends away from the normal and when the light enter from rarer to denser medium the light bends towards the normal. The common example of refraction that we see in our daily life is when the coin on the bottom of the bucket appears a little bit upwards than its actual position.

Also, the formation of a rainbow is also related to the phenomena of refraction.

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Answer:

the degree of compactness of a substance.

Explanation:

The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume. Wikipedia

Answer:

The quantity of mass per unit volume of a substance

Explanation:

The acceleration is -1.5m/s.

What is acceleration?

The speed at which velocity changes over time. Due to its magnitude and direction, acceleration is a vector quantity. The first derivative of velocity with respect to time or the second derivative of position with respect to time are further examples.

What is speed ?

Speed is defined as the ratio of distance to the amount of time it took to cover that distance.

speed= distance/ time

s= 4.6m/s

d=60m

4.6= 60/t

4.6t= 60

t= 13.04 seconds

acceleration= (the change in velocity/speed)/(time) this is the same as a=Δv/t

a= unkown

Δv= (final speed - initial speed) =  3.1m/s - 4.6m/s=  -1.5m/s

Therefore, the acceleration is -1.5m/s.

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Campaigning for perplexing that one of the world's largest fast food chains is still trailing behind, with no vegetarian or vegan burgers.

What is campaign ?
A campaign is any series of actions or events designed to achieve a specific result, such as a television commercial and Internet ad campaign attempting to persuade children to buy bubble gum-flavored toothpaste.

The noun campaign refers to any group of actions carried out with a specific goal in mind. A political campaign's purpose is to elect a candidate to office. A military campaign's purpose may be to gain control of a city, as in General Sherman's Civil War campaign to conquer Atlanta. Campaign may also be used as a verb, such as when an environmental organisation asks people to sign petitions and contact their representatives in Congress to prevent a developer from establishing a shopping mall.

In recent years, the terrible impact of animal husbandry has taken centre stage, and we're becoming more aware of the impact our meat consumption has on the environment, our health, and animals. Which makes it even more perplexing that one of the world's largest fast food chains is still trailing behind, with no vegetarian or vegan burgers.

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Answer:

The strength of gravity on Pluto is 0.6 m/s²

Explanation:

The given mass of the shoe = 0.5 kg

The weight of the shoe (on Pluto), W = 0.3 N

Therefore, given that weight, W = Mass × The acceleration due to gravity, We have;

The strength of gravity = The force gravity applies to each unit of mass = The acceleration due to gravity (in m/s²)

The weight of the shoe, W = The mass of the shoe × The strength of gravity on Pluto

Substituting the known values, gives;

0.3 = 0.5 × The strength of gravity on Pluto

∴ The strength of gravity on Pluto = 0.6 m/s².

The type of electromagnetic radiation associated with the peak at 278 nm is ultraviolet radiation.

Electromagnetic radiation refers to waves of the electromagnetic field that propagate through space, carrying energy. These waves have a broad spectrum of wavelengths, and the different types of radiation are classified by their wavelengths. A peak at 278 nm corresponds to a specific wavelength within the electromagnetic spectrum.

The wavelength of 278 nm falls within the ultraviolet (UV) range, which typically spans from 10 nm to 400 nm. Therefore, the type of electromagnetic radiation associated with the peak at 278 nm is ultraviolet radiation.

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The power used is the work done divided by the time taken. Work is calculated by multiplying the force by the distance moved. In this case, the work done is 70 N x 20 m = 1400 Nm. The time taken is 5 seconds, so the power used is 1400 Nm / 5 s = 280 W.

Force is a fundamental concept in Physics and is defined as an interaction between two objects that causes a change in the motion of one or both objects. Force is a vector quantity, meaning it has both magnitude and direction. Forces can be exerted by both natural and man-made objects, and can cause changes from linear motion to changes in shape or rotation. Examples of forces include gravity, friction, and magnetism. In Physics, the study of forces is called mechanics.

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Answer:

Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Answer: They give  you a portion of the thing its fighting so it gets your cells use to it so they can fight it off easily

Explanation:

Answer:

Floating in water

Hanging objects

Explanation: trust me

The thermodynamic function that equals heat flow when pressure is constant is called enthalpy. The symbol for enthalpy is H, and it is defined as the sum of the internal energy of a system and the product of its pressure and volume: H = U + PV.

Enthalpy is a thermodynamic function that describes the heat content of a system at constant pressure. When a system undergoes a process at constant pressure, the change in enthalpy of the system equals the heat flow into or out of the system. This makes enthalpy a useful tool for analyzing chemical reactions and energy transfer in physical processes. Enthalpy can be calculated as the sum of the internal energy of the system and the product of its pressure and volume. It is often represented by the symbol H and measured in units of energy, such as joules or calories.

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Answer:

so if it's 20 you should put 20 times 10 15 * 30 and 1.3 * 5 mg and if you put that milligrams in there it'll solve the destination I saw the white way you going so yeah just be careful at least you want to make the milligrams even a multimacy with the y i and replace it with the 14a

It's Action and Reaction

After watching the Ted Talk, there were still a few questions that I had about supermassive black holes. Firstly, I wanted to know more about the event horizon and what it exactly entails. Although the speaker briefly touched upon this subject, I would have appreciated a more in-depth explanation. Additionally, I would have liked to know more about the role of supermassive black holes in the universe.

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In a cell has an emf of 4.0V and internal resistance of 2.0ohms,The ideal voltmeter reads 3.2V. The resistance of R is 8.0 ohms.

To find the resistance of R, we can use the concept of voltage division in a circuit. The voltage across the resistor R can be calculated using the following formula:

V_R = (R / (R + r)) * V

Where:

V_R is the voltage across R,

R is the resistance of R,

r is the internal resistance of the cell,

V is the emf of the cell.

In this case, the emf of the cell is given as 4.0V, the internal resistance is 2.0 ohms, and the ideal voltmeter reads 3.2V. We can use this information to set up an equation:

3.2V = (R / (R + 2.0Ω)) * 4.0V

To solve for R, we can rearrange the equation and solve for R:

3.2V * (R + 2.0Ω) = 4.0V * R

3.2V * R + 6.4V = 4.0V * R

6.4V = 4.0V * R - 3.2V * R

6.4V = 0.8V * R

Dividing both sides by 0.8V:

R = 6.4V / 0.8V

R = 8.0Ω

Therefore, the resistance of R is 8.0 ohms.

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Explanation:

why do you think is important to study about that different forms of precolonial literature?

Answer:

do you mind telling me what is it your asking so i can help ?

Explanation:

Answer:

Answer: C. 3000kg

Explanation:

Hydraulic Jack

It's a device that is used to lift heavy loads by applying force via a hydraulic cylinder.

Since the internal pressure on the liquid of the jack is constant, the following relation applies:

\(\displaystyle \frac{F_1}{A_1}=\frac{F_2}{A_2}\)

Where

F1  = Force applied in one end of the jack

A1  = Area of the cylinder of the same end

F2  = Force applied in the other end of the jack

A2  = Area of the cylinder of the other end

If we assume the force is being applied on side 1, then the force on side 2 is calculated by solving for F2:

\(\displaystyle F_2=\frac{F_1.A_2}{A_1}\)

We have F1=1000N, A1= 48~cm^2, A2= 1440~cm^2, thus:

\(\displaystyle F_2=\frac{1000.1440}{48}\)

\(F_2 = 30000 ~N\)

Since we need to know the mass that can be lifted by that force, we use the formula:

W = m.g

Where W is the weight of the mass and g= 10~m/s^2. Since the weight is equal to the force exerted by the jack:

\(\displaystyle m=\frac{W}{g}=\frac{30000}{10}\)

m = 3000 Kg

Answer: C. 3000kg

Answer:

\(\text{Weight} = \text{Mass} \times \text{Gravitational acceleration}\)

Explanation:

Answer:

3433.4m

Explanation:

Volume_submerged = (Density_mantle / Density_mountain) * Volume_exposed

Volume_submerged_meters = Volume_submerged / 1000000

Weight_submerged = Density_mantle * Volume_submerged_meters * g

Weight_submerged = Weight_exposed

Density_mantle * Volume_submerged_meters * g = Density_mountain * Volume_exposed * g

Volume_submerged_meters = (Density_mountain / Density_mantle) * Volume_exposed

Volume_submerged_meters = (3.2 g/cm^3 / 4.1 g/cm^3) * 4400 meters

Volume_submerged_meters = (0.7805) * 4400 meters

Therefore, the total height of the mountain is 3433.4 meters.

Mark me brainliest!

A scientific theory has been tested many times, and been shown to be accurate. The correct option is B.

A hypothesis is a testable declaration about the relationship among two or more factors or a suggested clarification for some observational method in a scientific context.

A hypothesis is developed in scientific methodology before any relevant research is conducted. In contrast, a theory is backed by evidence.

In contrast, a theory is a sensible explanation of a phenomenon that can be proffered as a scientific study. A scientific theory has been tested numerous times and proven to be correct.

Thus, the correct option is B.

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Answer:

22425 J

Explanation:

From the question,

Applying

Q = cm(t₂-t₁).................. Equation 1

Where Q = Thermal Energy, c = specific heat capacity of aluminium, m = mass of aluminium, t₂ = Final Temperature, t₁ = Initial Temperature.

Given: c = 897 J/kg.K, m = 1.0 kg, t₁ = 50 °C, t₂ = 25 °C (The final temperature is reduced by half)

Substitute these values into equation 1

Q = 897×1×(25-50)

Q = 897×(-25)

Q = -22425 J

Hence the thermal energy lost by the aluminium is 22425 J

Answer:

the positive and negative charges of the hydrogen and oxygen atoms that make up water molecules makes them attracted to each other

Explanation:

Hope this helps dude

Answer:

C. A turtle relies indirectly on the Sun as an energy source.

Explanation:

Turtles are animals, meaning they are unable to perform photosynthesis, thus option A is inapplicable. Turtles consume food such as algae and seagrass. These aquatic plants gain their energy directly from the Sun through photosynthesis, and as a result when the turtle consumes these plants, that energy from the Sun is indirectly feeding the turtle.

Given function isv(t) = t³ +13t²+47t-35and time interval is 1≤t≤7. We have to calculate:

(a) Displacement

(b) Total Distance

(a) Displacement:

Displacement is defined as the shortest distance between initial and final points. We can find the displacement of a particle with the help of following formula:

Displacement = Final Position - Initial PositionHere, the particle moves along a straight line, and we don't know the initial and final position.  Thus, the displacement of the particle is 219 ft.(b) Total Distance:Total distance traveled by the particle is the sum of all the distances covered by it in different intervals.

Thus, we have two real roots of the given equation:t₁

≈ - 6.548t₂

≈ 0.215

Therefore, ∫|v(t)|dt = 309

As we have to find the total distance, we have to add both the cases. Therefore,

Total Distance =∫|v(t)|dt  [from 1 to 7]

=∫|v(t)|dt [from 1 to 7]

=∫|v(t)|dt (from 1 to 1.215) +|v(t)|dt (from 1.215 to 7) = 252 + 309= 561 ft Thus, the total distance traveled by the particle is 561 feet.

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Answer:

We can use Coulomb's law to solve this problem:

F = k * q1 * q2 / r^2

where F is the force between the two charges, k is Coulomb's constant (k = 9 x 10^9 N m^2 / C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between them.

We know the force F, the distance r, and the magnitude of one of the charges q1. We can rearrange the equation to solve for the magnitude of the other charge q2:

q2 = F * r^2 / (k * q1)

Substituting the values we have:

q2 = (250 N) * (0.15 m)^2 / (9 x 10^9 N m^2 / C^2 * 6.5 x 10^-5 C)

Simplifying:

q2 = 8.65 x 10^5 C

Therefore, the magnitude of the other charge is 8.65 x 10^5 C.

Gamma rays pose the greatest health threat to humans among the given options of microwaves, ultraviolet light, x-rays, and gamma rays.

Among the choices provided, gamma rays are the most dangerous type of radiation to human health. Gamma rays are a form of ionizing radiation, which means they have high energy and can penetrate deep into tissues. Exposure to gamma rays can cause significant damage to cells and DNA, leading to various health effects, including radiation sickness, increased risk of cancer, and genetic mutations. While microwaves, ultraviolet light, and x-rays can also have health effects, they generally have lower energy levels and pose a lesser risk compared to gamma rays, which have the highest energy and penetration capability.

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The wavelength of the wave is 23.55 rad/s.

What is a wavelength simple definition?

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

Distance b/w one crest and one trough is  λ/2 and b/w two crests or two trough it is  λ.

Therefore from 2nd crest to 6th trough the total distance

                   = 4 λ +  λ /2 => 9 λ/2

that is given as:

9 λ/2 = 24 cm

λ= 16/3 cm

V = w/k => w × λ /2pi => w = 2 × 3.14 × 20 × 3/16 => 23.55 rad/s

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In the food web if the population of a tertiary consumer was to

double the secondary consumer population would decreased.

In the food web If the population of a tertiary consumer was to

double , the following would happen :

1) This will decrease the secondary consumer population due to the more predator's.

2) this will lead to increase in the primary consumers as the secondary consumers decreases and they will have fewer predators.

3) The tertiary consumers will also decreases after some time because they will not have enough food to their survival.

Thus, In the food web if the population of a tertiary consumer was to

double the secondary consumer population would decreased.

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