HELP ME !!!! A.S.A.P!!!!! WILL BE MARKED AS BRAINLEST!!! 15 POINTS!!!!
Magnets A and B are of equal magnetic strength. In which position will magnets A and B have the greatest attractive force toward each other?




A


B


C


D

Answer: 1) Ectothermic animals need the warmth before they can move around to hunt food.

2) frogs, lizards, snakes

3) rattle snake

4) mammals; warm-blooded

5) Ectothermic animals have a lower body temperature than endothermic animals.

6) move around faster to raise its body temperature.

7) keep their bodies from having too much water.

8) constantly move around to keep their bodies warm.

9) ectotherm

10) Homeothermy is the ability of an organism to maintain a constant internal body temperature, regardless of the temperature of the environment. This may require the ability to lose excess heat as well as the ability to generate and conserve heat. Most mammals have both abilities.

Explanation: I never ask, but can you pls give me brainlest?

The correct answer is option D) Ectothermic animals need warmth before they can move around to hunt food. The correct answer is option C) frogs, lizards, and snakes. The correct answer is option C) rattlesnake. The correct answer is option C) mammals; cold-blooded. The correct answer is option D) Ectothermic animals have a body temperature that is the same as their environment, and endothermic animals have a constant body temperature. The correct answer is option A) slow down as a response to the cooling temperature. The correct answer is option D) generates heat loss through evaporation. The correct answer is option A) eat more often to have energy to keep a constant temperature. The correct answer is option B) endotherm. The correct answer is option B) endothermic.

The student asked why lizards bask in the sun, which group of animals could be correctly classified as ectothermic, and multiple other questions regarding endothermic and ectothermic animals. Here are the detailed answers:

1. Ectothermic species, such as lizards, need warmth to move and digest. They rely on external sources of heat, such as sun exposure, to control their body temperature, which is essential for their physiological activities.

2. Ectothermic creatures, such as frogs, lizards, and snakes, rely on external heat sources to control their body temperature, whereas endothermic animals, such as robins, squirrels, mice, bears, and wolves, do so internally.

3. Rattlesnake matches Group B reptile requirements, such as hard shells and terrestrial existence, and can be classed as terrestrial or aquatic depending on standard biological classification.

4. Birds and mammals are warm-blooded, meaning they have a constant internal body temperature that does not alter with the environment, known as endothermy, which allows them to remain active in a variety of environments.

5. Ectothermic and endothermic animals have different body temperatures. Ectothermic animals maintain a steady body temperature by relying on external heat sources, whereas endothermic species regulate their internal temperature, resulting in a constant body temperature.

6. As the temperature drops, a cold-blooded animal is likely to slow down in reaction to the decreasing temperature. Cold-blooded species, or ectotherms, rely on external heat sources to control their body temperature, therefore metabolic activities slow down in colder temperatures.

7. Sweating is one way that warm-blooded animals generate heat loss through evaporation. Warm-blooded animals lose heat by evaporation, which allows moisture on their skin to evaporate, lowering and regulating the body temperature, especially in warm surroundings or during physical effort.

8. Because endothermic animals must maintain a constant body temperature, they must eat more often to have energy to keep a constant temperature. Endotherms need a high metabolic rate to maintain their internal heat generation. Regular feeding supplies the energy required to maintain a consistent body temperature, particularly in cooler regions.

9. The characteristics of Group A describe endotherms. Endotherms are organisms that can maintain a steady internal body temperature regardless of their external environment. They regulate their temperature, allowing them to flourish in a wide range of environmental conditions, as opposed to ectotherms, which rely on external heat sources.

10. The ability of some animals to modulate their body temperatures through internal techniques such as muscle shaking, fat burning, and panting is called endothermic. Endothermic species regulate their body temperature internally via metabolic processes, allowing them to maintain a steady temperature despite environmental disturbances.

Earth gravity = 9.8 m/s²

Moon gravity = 1.6 m/s²

Weight = (mass) x (gravity)

Divide each side by (gravity) and then it says:

Mass = Weight / gravity

Object on Earth:  Mass = (30N) / (9.8 m/s²)  =  3.06 kg

Object on Moon:  Mass = (30N) / (1.6 m/s²)  =  18.52 kg

If two objects have the same weight on Earth and on the Moon, then the one on the Moon must have more mass.  Six times as much mass, in fact.

B. Physical weathering is caused by ice, while chemical weathering is caused only by water.

Answer:

Chemical weathering changes the composition of a rock, while physical weathering does not.

Explanation:

Chemical weathering of rocks is a chemical reaction. A chemical change is known to change the composition of a substance. Once a substance is subjected to a chemical reaction, a new substance is automatically formed thereby changing the composition of the original substance.

A physical weathering agent does not affect the composition of rocks. This a major difference between chemical and physical weathering processes. For instance, physical weathering caused by ice has nothing to do with internal rock composition.

the answer is a resources

The pollution and the depletion of  resources may be caused by the production of electric energy. The power generation might be associated with some atmospheric pollution .

Electric energy is form of energy that can be generated from other forms of energy such as kinetic , mechanical, thermal energy etc. All the electric devices are working by the consumption of electric energy.

Electric energy is usually generated from hydrothermal energy, nuclear energy, wind energy etc. In all these cases, energy is transforming from one form to the other.

Nuclear power plants, coal fields, etc. working for power generation is associated with some pollution that threats the surrounding livings. Depletion of these resources leads to some unwanted products and toxic gases.

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Fuses and Circuit Breakers (CB) are used for the protection of power system. These along with other protective equipment like relays, isolater, switches, are collectively called as switchgear(switching equipment used in power systems).

The basic function is to break the circuit in case of faulty conditions so as to protect the power system equipment and auxiliaries.

FUSE is a low resistance device which is placed in the circuit for protection. Under faulty conditions when the current becomes more than the desired value, then due to the increase in temperature the fuse wire melts and breaks, thus breaking the circuit. These are used for lower power ratings and can be used only once, after that it has to be replaced with a new one.

CIRCUIT BREAKER also solves the same purpose i.e. it breaks the circuit when the fault occurs. These are used for large ratings and in the power systems and auxiliaries. CB also has the capability to re-close after the fault is through i.e. when the system gets healthy. The CB has two parts/contacts one is static and the other is moving(the one responsible for making or breaking the contacts).When the contacts of CB separate, then it said to have tripped. Tripping of the circuit breaker has to be very fast so as to avoid the arc formation between the two contacts, otherwise it will defeat the purpose of installing the CB. The trip signal is given to the CB by an other protective device called as an ELECTRICAL RELAY. CB’s are categorized on the basis of the power ratings and the medium used to extinguish the arc formed during the breaking of the contacts.

mark brainliest  :)

Electric fuse and a Circuit breaker both contain ways to interrupt the flow of electricity.

Hope this helps!

Davinia.

Field strength = (1000 v) / (40 cm)

Field strength = (1,000 v) / (0.4 meter)

Field strength = (1,000 / 0.4) (volts/meter)

Field strength = 2,500 volts per meter

The electric field strength between two parallel charged plates, separated by 40 cm is 2500 V/m

The question given above, the following data were obtaines:

The electric field strength can be obtained as shown below:

Electric field strength (E) = Potential difference (V) / Distance apart (d)

= 1000 / 0.40

= 2500 V/m

Thus, the electric field strength between the two plates is 2500 V/m

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A chemical reaction is the only way to separate a pure substance because in terms of chemical composition, an element can't be broken down any more further, or separated. Some mixtures and solutions can be broken down with physical means, not just chemical reactions.

A Pure substance is only separated by a process of chemical reaction.

Pure substances are composed of only one kind of particle and have a constant or unchanging structure.

Elements and compounds are subclasses of pure substances:

An element is a substance that only contains one kind or class of atoms. An element is a pure material if it cannot be broken down or converted into other compounds by physical or chemical mechanisms. Metals, nonmetals, or metalloids make up the vast bulk of elements.

On the other hand, when two or more elements are chemically combined in a specific ratio, compounds can also be considered pure substances. However, these substances can be split up into their component parts through chemical processes.

To break down pure substances (elements and compounds) into their individual atoms or elements, a chemical reaction must take place.

Physical techniques cannot distinguish between pure substances.

Hence, Pure substance is only separated by a process of chemical reaction.

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The time taken for the dog to cross a yard of length 8 meters is 5.3 seconds.

Speed is simply referred to as distance traveled per unit time.

Mathematically, it is expressed as:

Speed = Distance ÷ time

Given the parameters:

Speed of the dog = 1.5 meters per seconds

Distance covered 8 meters

Time taken =?

To determine the time taken by the dog to cover a distance of 8 meters, plug the given values into the above formula and solve for the time.

Speed = Distance ÷ time

1.5m/s = 8m / time

Time × 1.5m/s = 8m

Time = 8 / 1.5

Time = 5.3 seconds

Therefore, the time taken is approximately 5.3 seconds.

Option A) 5.3s is the correct answer.

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The statement given in the question is FALSE.

Ecological Succession refers to the change in the specie structure of an ecosystem over a long period of time. There are two types of succession, primary and secondary succession. A primary success is said to occur when an ecosystem is totally destroyed to the extent that even the soil is wipe out. In this case, the ecosystem development has to start from the scratch. A succession is said to secondary if only part of the ecosystem is destroyed.  

Answer:

The answer is TRUE

Explanation:

got it right on Edge 2023

Final answer:

By walking at a speed of 2m/s for 2 hours, you would cover a distance of 14,400 meters, after converting the hours into seconds for compatibility in calculation.

Explanation:

If you were to walk with a speed of 2m/s for 2 hours, you can calculate the distance traveled by using the formula for distance, which is speed × time. In this case, your speed is 2 meters per second (m/s), and your time is 2 hours. However, to use the formula correctly, you need both measurements in compatible units. Since 1 hour equals 3600 seconds, 2 hours equals 7200 seconds. Thus, the calculation should be 2 m/s × 7200 s, which equals 14,400 meters.

a/b. The ball has velocity vector at time [tex]t[/tex]

[tex]\vec v=(v_x,v_y)=(v_0\cos63^\circ,v_0\sin63^\circ-gt)[/tex]

where [tex]v_0=16\dfrac{\rm m}{\rm s}[/tex] is the ball's initial speed and [tex]g=9.8\dfrac{\rm m}{\mathrm s^2}[/tex].

c. At its highest point, the ball has 0 vertical speed. This occurs when

[tex]v_0\sin63^\circ-gt=0\implies t=1.5\,\mathrm s[/tex]

d. Recall that

[tex]{v_y}^2-{v_{0y}}^2=-2g\Delta y[/tex]

so that at its highest point,

[tex]0^2-(v_0\sin63^\circ)^2=-2g\Delta y\implies\Delta y=10\,\mathrm m[/tex]

e. This is just twice the time it takes for the ball to reach its maximum height, [tex]t=2.9\,\mathrm s[/tex].

f. The ball's horizontal position after time [tex]t[/tex] is

[tex]v_0\cos63^\circ\,t[/tex]

so that after the time found in part (f), the ball has traveled

[tex]v_0\cos63^\circ(2.9\,\mathrm s)=11\,\mathrm m[/tex]

The soccer ball's horizontal and vertical components of velocity are approximately 7.26 m/s and 14.25 m/s, respectively. It takes approximately 1.453 seconds to reach the highest point and the total time in the air is about 2.906 seconds. The maximum height is around 10.35 meters and the ball lands about 21.1 meters from the soccer player.

The student is dealing with a projectile motion problem which can be solved using the kinematic equations of motion and trigonometry. The given initial speed is 16 m/s, and the angle of projection is 63 degrees.

A. Horizontal component of the velocity: Using trigonometry, horizontal component = initial velocity X cos(angle).

[tex]V_{x} = 16 X cos(63^{0})\\ V_{x} = 7.26 m/s[/tex]

B. Vertical component of the velocity: Again using trigonometry, vertical component = initial velocity X sin(angle).
[tex]V_{y}=16 X sin(63^{0} )\\V_{y} = 14.25m/s[/tex]

C. Time to reach the highest point: The time to reach the highest point is calculated using the vertical component of velocity and acceleration due to gravity (g = 9.81 [tex]m/s^2[/tex]).

Using the equation[tex]V_{y} = g X t,[/tex] where t is time, we get [tex]t = \frac{V_{y}}{g}[/tex]
[tex]t = \frac{14.25 m/s}{ 9.81 m/s^2}[/tex]

t = 1.453 seconds.

D. Maximum height of the ball: The maximum height can be computed using the vertical component and time to reach the highest point. Using the equation [tex]H = \frac{Vy X t}{2}[/tex],  we get

[tex]H = \frac{14.25 m/s X 1.453 s}{2}.[/tex]
H = 10.35 m

E. Total time the ball is in the air: The ball takes the same time to go up as to come down, so the total time is twice the time to reach the highest point. T = 2 X 1.453 s = 2.906 seconds.

F. Distance from the player when it lands: Using the horizontal component of velocity and the total time in air, the range can be calculated. [tex]R = Vx X T[/tex]
R = 7.26 m/s X 2.906 seconds

R = 21.1 meters

The correct answer would be A) the lenses of the eye change the size of images

The human retina can detect objects larger than itself through the lenses of the eye and interpretation by the brain.

The small human retina can detect objects larger than itself through a complex process involving the lenses of the eye and the interpretation by the brain. The lenses of the eye focus the incoming light onto the retina, creating an image that is larger than the retina itself. The retina then captures this image and sends signals to the brain, which interprets the size of the image based on the information received from the retina.

So, the correct answer to the question is a. Lenses of the eye change the size of the images. The lenses of the eye help the small retina capture and process larger images, allowing us to see objects that are larger than our retina.

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Heart rate is the rate at which the heart beats per minute. It is a very important function of the human body. After doing exercise heart rate is elevated you need to gradually get it to normal.

The heart rate is the number of times the heartbeats per minute.

During training, the heart will speed up. The highest heart rate is varying which is relying on age.

The role of the heart is to accept blood that is oxygen deficient from veins and pump it to the lungs.Where it gathers up oxygen and gets freed of carbon dioxide.  

The main function of blood is to pump the blood into different portions of the body.

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The formation of rock layer H can be determined relative to other layers using stratigraphy, fossil content, and potentially radiometric dating. Its position in the sequence of layers indicates its relative age while the fossils it contains can correlate it with other layers formed in a similar period. Radiometric dating can provide an absolute age if needed.

In the field of geology, the formation of rock layer H can be understood in relation to other rock layers through the method of stratigraphy. Essentially, the principle of stratigraphy states that in undeformed stratigraphic sequences, the oldest strata will be at the bottom with newer layers deposited on top. Therefore, to understand when layer H formed, one would need to examine the position of rock layer H in the sequence. For instance, if layer H is found below layer G but above layer I, we can tell that rock layer H formed after I but before G.

Fossil content can also provide clues to the relative age of the layers. For example, if rock layer H contains fossils that are found in rock layers G and I, it may indicate that these layers were formed during a similar geological period.

A third way is through the use of radiometric dating, which uses the decay of isotopes in the rocks to determine their age. However, this method is typically used to provide an absolute age to rock layers rather than their relative ages.

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Rock layer H's age relative to other layers can be determined by its position in a stratified formation (archaeological stratification) and the use of radiometric dating. The type of rock also provides clues to its age and formation process.

When considering the formation of rock layer H relative to other rock layers, it's imperative to understand geological concepts like stratification and radiometric dating. For instance, if rock layer H is positioned below another rock layer in a stratified formation, it can be inferred that layer H is older. This technique, called archaeological stratification, uses the relative position of layers to identify their age sequence.

Additionally, the exact age of rock layers can be obtained using radiometric dating methods, which leverage the rate of radioactive decay in certain minerals within the rocks, providing a timeline for their formation. If rock layer H is composed of such minerals, its formation age can be determined, revealing when it was formed in relation to other layers.

Identifying the type of rock is important as well; if layer H is a primitive, sedimentary, or volcanic rock, it provides additional clues to its age and its formation process. For instance, sedimentary rock layers are typically formed in the presence of water, and their positioning can reveal historical water levels.

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Answer:

B. 45 km/hr south

Explanation:

Velocity is a vector quantity which consists of:

- A magnitude, given by the ratio between displacement and time taken for the motion

- A direction, which corresponds to the direction of the displacement

Let's analyze now each option:

A. 12 m/s --> this is not a velocity: this is a speed, because it does not specify the direction, so it is only a scalar quantity

45 km/hr south --> this is a velocity, because it specificies both magnitude (45 km/h) and direction (south)

C. 55 km/hr  --> again ,this is not a velocity, but it is a speed, because it does not specify the direction, so it is only a scalar quantity

D. -5 m/s2 east --> this is not a velocity, but it is an acceleration, since the units of measurement are the ones of acceleration (m/s^2, while for the velocity should be m/s or km/h)

Final answer:

Velocity is a vector quantity that combines speed and direction, with option B. 45 km/hr south representing an example of velocity.

Explanation:

Velocity is a vector quantity that includes both speed and direction. In the given options, choice B. 45 km/hr south is an example of velocity because it includes both a numerical value (magnitude) and a specified direction. The question posed concerns determining which of the given options is an example of velocity. Velocity is defined as a vector quantity that describes both the speed of an object and the direction in which it is moving. Therefore, among the provided options, the one that includes both a magnitude and a specific direction should be considered an example of velocity.

The correct answer is (c) The taller the wavelength the lower the sound.

The wavelength of a sound wave affects its pitch by determining the frequency. Longer wavelengths result in lower pitch, while shorter wavelengths result in higher pitch.

Wavelength affects the pitch of a sound by influencing its frequency. Longer sound waves have lower frequency and produce a lower pitch, whereas shorter waves have higher frequency and a higher pitch. This relationship is evident in the correlation between the size of musical instruments and their pitch.

-- None of the choices answers the question correctly.  It's not that simple.

The only thing you can say about the result is that the product of (pressure)x(volume) will increase by 10x.

-- You can keep the volume of the gas constant if you want to, while it gets 10x hotter.  (Just keep it in the same bottle and don't let it expand.)  But if you do that, its PRESSURE will increase by 10x.

-- If you want to keep the pressure of the gas constant while it gets 10x hotter, then you'll have to let it expand to 10x its original volume.

Also, by the way, the question doesn't mean you just multiply the Celsius or Fahrenheit temperature by 10.  When you're playing with the pressure, volume, and temperature of a gas, it's the ABSOLUTE temperature you need to look at ... like Kelvins, or (Celsius+273°), or (Fahrenheit+460°).

the temperature and how far it is.

if it has the lowest surface temperature, it is red.

if it has high surface temperature, it is blue.

if you look a the earth science esrt, there is a graph stating the stars in our galaxy, the milky way, and how it far, hot/cold, and howold it is.

plz give me a brainliestt

The temperature of a star affects its color. Hotter stars appear bluish-white, while cooler stars appear reddish. This color variation is due to the relationship between a star's temperature and its emitted light spectrum.

A star's colour depends on its surface temperature. Stars emit a continuous spectrum of light, but temperature varies the intensity distribution across wavelengths. Wien's displacement law indicates that hotter things radiate more energy at shorter wavelengths. Redder stars are cooler, while bluish stars are hotter. Red, orange, yellow, white, and blue are the coldest to hottest star colours.

A star's chemical makeup can also affect its colour. A star's atmosphere absorbs specific wavelengths of light, creating spectral lines that may change its colour. Astronomers can determine a star's temperature, composition, and other properties by analysing its colour and spectrum.

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A ray of light that strikes a surface is known as the incident ray.  (d)

In the physics of optics, it has been defined that the incident rays are the rays which strikes the surface.

Answer : Option D

Explanation:

When the ray of light strikes the surface it is know as ''incident ray''. The angle which it makes with the normal or the perpendicular imagined or drawn to the surface is the ''incident angle''.

According to the ''Law of Reflection'', the incident ray after striking the surface is reflected back, the ray which leaves the surface is called the ''Reflected Ray''. The angle which is made between the same normal and reflected ray is the reflected angle.

The temperature in which water is frozen.

The freezing point is the temperature at which a liquid becomes a solid, and 'freezing' is the term for this phase transition. 'Freezing point depression' is the lowering of this temperature due to the presence of a solute. Freeze drying is a related process that involves lowering atmospheric pressure to dry and cool substances.

The freezing point is scientifically defined as the temperature at which a liquid turns into a solid. During this process, known as freezing, the physical state of the matter changes due to a decrease in temperature. An important concept related to this is freezing point depression, which refers to the lowering of a liquid's freezing point by the addition of a solute.

Substances can also undergo a process called freeze drying. This method involves drying substances such as food by reducing the atmospheric pressure around them, which speeds up the drying process and decreases the temperature of the substance being freeze-dried due to the change in pressure.

0.5 would be your answer >:o)

D: use of linear perspective

The renaissance technique  used in this painting to make it more realistic and three-dimensional was use of linear perspective. Hence, option D is correct.

Creating the appearance of depth on a flat surface through the use of linear perspective. In a painting or drawing that employs this approach, all orthogonal parallel lines meet at a single vanishing point on the horizon.

It is believed that Italian Renaissance builder Filippo Brunelleschi developed linear perspective in 1415, and writer and architect Leon Battista Alberti later recorded it around 1435. They used the concept to create 3D paintings.

Although painters and architects in the ancient Greek and Roman eras were probably aware of linear perspective, there are no records from those times, and the technique was thus forgotten until the 15th century. Hence, option D is correct.

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The options of your question includes:

use of negative space

B.

use of colorful paint colors

C.

use of gesture drawing

D.

use of linear perspective

A. The big bang theory is how scientists think the world was created.

Answer:

Second option 6.3 N at 162° counterclockwise from  F1

Explanation:

Observe the attached image. We must calculate the sum of all the forces in the direction x and in the direction y and equal the sum of the forces to 0.  

For the address x we have:  

[tex]-F_3sin(b) + F_1 = 0[/tex]

For the address and we have:  

[tex]-F_3cos(b) + F_2 = 0[/tex]

The forces [tex]F_1[/tex] and [tex]F_2[/tex] are known  

[tex]F_1 = 5.7\ N\\\\F_2 = 1.9\ N[/tex]

We have 2 unknowns ([tex]F_3[/tex] and b) and we have 2 equations.  

Now we clear [tex]F_3[/tex] from the second equation and introduce it into the first equation.  

[tex]F_3 = \frac{F_2}{cos (b)}[/tex]

Then

[tex]-\frac{F_2}{cos (b)}sin(b)+F_1 = 0\\\\F_1 = \frac{F_2}{cos (b)}sin(b)\\\\F_1 = F_2tan(b)\\\\tan(b) = \frac{F_1}{F_2}\\\\tan(b) = \frac{5.7}{1.9}\\\\tan^{-1}(\frac{5.7}{1.9}) = b\\\\b= 72\°\\\\m = b +90\\\\\m= 162\°[/tex]

Then we find the value of [tex]F_3[/tex]

[tex]F_3 = \frac{F_1}{sin(b)}\\\\F_3 =\frac{5.7}{sin(72\°)}\\\\F_3 = 6.01 N[/tex]

So the answer is 6.3 N at 162° counterclockwise from  F1

velocity of electromagnetic waves=3.0×10^8.

wavelength=velocity/frequency

(3.0×10^8)/(7.5×10^12)

=0.00004

The wavelength of electromagnetic radiation with a frequency of 7.5 x 10^12 Hz is 40 nm.

To calculate the wavelength of electromagnetic radiation with a frequency of 7.5 x 10^12 Hz, we can use the formula c = fλ, where c is the speed of light and f is the frequency. Rearranging the formula, we get λ = c/f. Plugging in the given values, λ = (3.00 x 10^8 m/s)/(7.5 x 10^12 Hz). Calculating this gives us a wavelength of 4 x 10^-5 meters or 40 nm.

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Answer:

570 nm

Explanation:

The wavelength of an electromagnetic wave is given by:

[tex]\lambda=\frac{c}{f}[/tex]

where

[tex]c=3.0\cdot 10^8 m/s[/tex] is the speed of light (the speed of the electromagnetic waves in a vacuum)

[tex]f=5.26\cdot 10^{14} Hz[/tex] is the frequency of the emitted light

Substituting the numbers into the equation, we can find [tex]\lambda[/tex], the wavelength of the emitted light:

[tex]\lambda=\frac{3\cdot 10^8 m/s}{5.26\cdot 10^{14} Hz}=5.70\cdot 10^{-7} m = 570 nm[/tex]

a- inertia, elliptical

Answer:

Explanation:

a is the answer

B the desert was once covered in water

Answer: The answer is B.

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Answer : Deposition takes place when the molecules settle out of a solution.

Explanation :

Deposition : It is a type of process in which the phase changes from gaseous state to solid state without passing through the liquid state at constant temperature.

Or we can say that in deposition process, the molecules are settle down at the bottom of the container. In this process, there is no intermolecular space present between the atoms of molecule.