An emission line is produced when ... Group of answer choices an electron passes from a lower to a higher energy level. a proton passes from a lower to a higher energy level. an electron passes from a higher to a lower energy level. radiation passes through the outer layers of a star. a proton passes from a higher to a lower energy level.
Answers
An emission line is produced when an electron passes from a higher to a lower energy level.
1. Emission Spectra: When the emitted photons are separated and analyzed, they create a pattern called an emission spectrum. Each element or molecule has a unique set of energy levels, and therefore, emits photons at specific wavelengths or frequencies, resulting in characteristic emission lines in its spectrum.
2. Energy Transitions: The energy levels in an atom or molecule are quantized, meaning they can only exist at certain discrete values. When an electron absorbs energy (e.g., through collisions or absorption of photons), it can move to a higher energy level. However, this higher energy state is unstable, and the electron tends to return to its original, lower energy state. During this transition, the excess energy is released as a photon.
3. Line Spectra: Emission lines appear as sharp, narrow lines at specific wavelengths or frequencies in the electromagnetic spectrum. Each line corresponds to a specific energy transition within the atom or molecule. These lines are distinct and can be used to identify the elements or molecules present in a sample.
4. Applications: Emission lines have several practical applications. In astronomy, analyzing the emission lines from distant celestial objects helps scientists determine their composition, temperature, and other properties. In chemistry and material science, emission spectroscopy is used for qualitative and quantitative analysis, identifying elements in samples, and monitoring chemical reactions.
To know more about emission line refer here
https://brainly.com/question/42577252#
#SPJ11
Related Questions
The process of charging a conductor by bringing it near another charged object and then grounding the conductor is called
a) Charging by contact
b) Charging by polarization
c) Induction
d) Neutralization
Answers
The process of charging a conductor by bringing it near another charged object and then grounding the conductor is called Induction. The correct option is C.
The process described, in which a conductor is charged by bringing it near another charged object and then grounding the conductor, is known as induction. Induction involves the redistribution of charges within the conductor without direct contact between the two objects.
Here's how the process works: When a charged object is brought close to the conductor, the charges in the conductor are rearranged.
This occurs due to the electric field of the charged object influencing the distribution of charges within the conductor. However, the conductor itself remains electrically neutral overall.
If the conductor is then grounded, allowing it to make contact with the Earth or a large reservoir of charge, any excess charges in the conductor are neutralized or redistributed, resulting in the conductor becoming charged with the opposite polarity to that of the inducing object.
Therefore, the correct term for this process is c, induction.
To know more about Induction, refer here:
https://brainly.com/question/32650288#
#SPJ11
C6H12O6 + 6O2 6CO2+6H2O + energy Which statement correctly compares the reactants and products of the equation?
Answers
The true statement about the equation of respiration is:
The mass of the reactants is the same as the mass of the products; option C.
What is respiration?Respiration is the process by which living organisms break down large molecules such as glucose into smaller molecules such a carbon dioxide and water to release energy in the form of ATP.
Respiration are of two types in living organisms:
Aerobic respiration which requires oxygenanaerobic respiration that does not require oxygenThe equation of aerobic respiration is given below:
C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + energyIn the given equation above, glucose reacts i the presence of oxygen is broken down into carbon dioxide and water and energy is released.
According to the law of conservation of mass, the mass of reactants is equal to the mass of the products.
Learn more about respiration at: https://brainly.com/question/22673336
#SPJ1
Note that the complete question is given below:
Respiration describes the process that living cells use to release energy by combining sugar and oxygen. The primary chemical changes that happen during respiration are shown in the equation below.
C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + energy
Which statement correctly compares the reactants and products of the equation?
Which statement correctly compares the reactants and products of the equation?
A.
The mass of the reactants is less than the mass of the products.
B.
The mass of the reactants is greater than the mass of the products.
C.
The mass of the reactants is the same as the mass of the products.
D.
The number of reactant molecules is greater than the number of products.
Which material would be best for thawing frozen food quickly? O A. A plastic plate O B. A steel plate O C. A glass plate O D. A ceramic plate
Answers
Answer:steel plate
Explanation: bc I said so
What is the approximate number of wavelengths of light that can travel in 1 direction within a retroreflecting bead that has a diameter of 5 × 10-5 m? (Note: The speed of light = 3 × 108 m/s, and its frequency is approximately 1015Hz.)
0.6
1.7 × 10^2
1.5 × 10^4
3.3 × 10^6
Answers
The approximate number of wavelengths of light that can travel in one direction within a retroreflecting bead that has a diameter of 5 ×\(10^-^5\) m is 167.
Number of wavelengths of light in a retroreflecting bead with 5 × 10^-5 m diameter?
This calculation is based on the formula n = L/λ, where n is the number of wavelengths, L is the length of the object, and λ is the wavelength of light. To calculate the wavelength of light, we use the formula c = λf, where c is the speed of light and f is the frequency of light.
In this problem, we are given the diameter of the retroreflecting bead, which is assumed to be spherical. Therefore, its length is equal to its diameter, which is 5 × \(10^-^5\)m. We are also given the speed of light, which is 3 × \(10^8\) m/s, and an approximation of the frequency of light, which is \(10^1^5\) Hz.
Using the formula c = λf, we can solve for the wavelength of light:
λ = c/f = (3 ×\(10^8\) m/s)/\((10^1^5\)Hz) = 3 ×\(10^-^7\)m
Finally, we can use the formula n = L/λ to calculate the approximate number of wavelengths of light that can travel in one direction within the retroreflecting bead:
n = L/λ = (5 ×\(10^-^5\) m)/(3 ×\(10^-^7\) m) = 166.67 ≈ 167
Therefore, the approximate number of wavelengths of light that can travel in one direction within a retroreflecting bead that has a diameter of 5 ×\(10^-^5\) m is 167.
Learn more about wavelengths,
brainly.com/question/4112024
#SPJ11
When you hear sounds through a wall, you can hear lower pitched sounds more clearly than higher pitched sounds. Use a model to explain why.
Answers
Sound waves travel through the air and can be blocked by walls. When a sound wave passes through a wall, the wall absorbs some of the sound energy, resulting in the higher-pitched sound waves being blocked more than lower-pitched sound waves.
This is because higher-pitched sound waves have shorter wavelengths, making them more susceptible to being blocked than lower-pitched sound waves, which have longer wavelengths.
This phenomenon is known as wave-particle duality, which states that sound waves have both particle-like and wave-like properties. The particle-like property of higher-pitched sound waves makes them more susceptible to being blocked by walls than lower-pitched sound waves. This is why you can hear lower-pitched sounds more clearly when they pass through a wall.
Learn more about sound waves:
https://brainly.com/question/16093793
#SPJ4
What is "special" about the special theory of relativity? It deals with motion at constant velocity and accelerated motion but excludes all other effects; in particular, it excludes gravity.
Answers
Answer:
Explanation:
The reason it is called the special theory of relativity is because it's a special case of the general theory of relativity. SR deals with uniform motion, where there is no acceleration. Spacetime in special relativity is flat, with no gravity or curvature. It is a spacetime with no gravity. On the other hand, GR deals with accelerating reference frames and curved spacetime.
Jupiter takes 9.9259 hours to rotate on its axis and has a tangential speed of 12,293 m/s. What is the radius of Jupiter? 7,781.6 km 19,420 km 48,893 km 69,912 km
Answers
The radius of Jupiter is 11.37 × 10^6 km (approx).
The correct answer to the given question is option D.
Jupiter is a giant planet in our solar system and takes 9.9259 hours to rotate on its axis. The tangential speed of Jupiter is given to be 12,293 m/s. We are required to find out the radius of Jupiter.
Given Data:
Rotation period of Jupiter, T = 9.9259 hours
Tangential speed of Jupiter, v = 12,293 m/s
Formula Used:
Radius of Jupiter, r = v × T / (2π)
Calculation:
We can find the radius of Jupiter using the above formula.
Substituting the given values in the formula, we get:
r = 12,293 × 9.9259 × 60 × 60 / (2π)r = 71,492,602.68 / (2π)r = 11,371,641.26 km ≈ 11.37 × 10^6 km.
Therefore, the radius of Jupiter is 11.37 × 10^6 km (approx).
Hence, the correct option is 69,912 km.
For more such questions on radius of Jupiter, click on:
https://brainly.com/question/9999730
#SPJ8
A can filled with water, is heated so that water boils. Now seal the mouth with
air – tight cap. Let the can cool. It’s sides get deformed. Explain why?
Answers
Answer:
The heat from the water deforms the sides because it melts the plastic
if a beam of 11 kev x rays illuminates a sample, what angles will give diffraction maxima of the first, second and third order?
Answers
When a beam of 11 keV X-rays illuminates a sample, the angles that will produce diffraction maxima of the first, second, and third order can be calculated using Bragg's law, which states that nλ = 2d sin(θ), where n is the order of diffraction, λ is the wavelength of the X-rays, d is the spacing between crystal lattice planes, and θ is the angle of incidence.
Bragg's law can be used to calculate the angles for diffraction maxima. For the first-order maximum (n = 1), we have λ = 2d sin(θ₁). Rearranging the equation, we get sin(θ₁) = λ / (2d). Substituting the values, with λ representing the wavelength of 11 keV X-rays (which can be converted to the corresponding wavelength), and the known spacing between lattice planes, we can solve for θ₁.
For the second-order maximum (n = 2), the equation becomes λ = 2d sin(θ₂). Solving for sin(θ₂) and substituting the values, we can find θ₂.
Similarly, for the third-order maximum (n = 3), we use λ = 2d sin(θ₃) to determine sin(θ₃) and find θ₃ by substituting the values.
By calculating these angles using Bragg's law, we can determine the angles that will produce diffraction maxima of the first, second, and third order for the given beam of 11 keV X-rays illuminating the sample.
Learn more about Bragg's law here;
https://brainly.com/question/13093777
#SPJ11
A small object A, electrically charged, creates an electric field. At a point P located 0.250 m directly north of A, the field has a value of 40.0 N/C directed to the south. What is the charge of object A? a. 1.11 Times 10^-9 C b. -1.11 Times 10^-9 C c. 2.78 Times 10^-10 C d. -2.78 Times 10^-10 C e. 5.75 Times 10^12 C f. -5.75 Times 10^12 C
Answers
The electric field created by a point charge is given by the equation E = k * (Q / \(r^{2}\)).The charge of object A is -1.11 × \(10^{-9}\) C (option b).
In this case, the electric field at point P is 40.0 N/C directed to the south. Since the field is directed towards the south, the charge of object A must be negative. Plugging the given values into the equation, we have:
40.0 N/C = (9 × \(10^{9}\) N \(m^2/C^2\)) * (Q / (0.250 \(m)^2)\)
Simplifying the equation, we can solve for Q:
Q = (40.0 N/C) * (0.250 \(m)^2\) / (9 × 10^9 N \(m^2/C^2)\)
Calculating the expression, we find Q ≈ -1.11 × \(10^{-9}\) C. Therefore, the charge of object A is approximately -1.11 × \(10^{-9}\) C, which corresponds to option b.
Learn more about electric field here ;
https://brainly.com/question/11482745
#SPJ11
While analyzing smoke detector designs that rely on the photoelectric effect, you are evaluating surfaces made from each of the materials listed in (Figure 1). One particular application uses ultraviolet light with wavelength 273 nm
Answers
Photodetectors that rely on the external photoelectric effect are known as photoemissive detectors (sometimes spelled photoelectric detectors).
A photocathode of some kind is present in such a device, where incident light is partially absorbed to produce photoelectrons, which are released into free space.
The light reflected off of particles by a light beam inside the sensor chamber is used by smoke detectors to detect smoke. When there are no particles in the sensing chamber, the beam's light does not hit the light detector, signaling that everything is in order.
Ionization smoke alarms detect smoke from rapidly blazing fires, while photoelectric smoke detectors are best for detecting smoke from smoldering fires.
To know about detector
https://brainly.com/question/28592245
#SPJ4
A soccer player strikes a soccer ball with a force of 550 N. If the player and the ball remain in contact for 0.03 s. What impulse was delivered to the ball by the player?
Answers
Impulse (J) is equal to the change in momentum of the ball. It is also equal to Force times Time:
J = Ft
J = (550 N)(0.03 s)
J = 16.5 Ns
Hope this helps! Please press “Thanks!”
During a pring tide what type of tide occur when the moon i in between the un and earth
Answers
King tide happens during a king tide when the moon is between the earth and the sun. When the Moon's orbit around Earth is at its first and last quarter phases, neap tides happen.
Turns it so that it is parallel to the Sun. Extremely high or extremely low tides can occur when Earth, the Moon's orbit, and the Sun line up because of the combined gravitational effect. Moderate tides occur when the Sun and the Moon are at a straight angle. Its gravitational pull causes the Earth's tides and somewhat lengthens the day as it orbits the planet at a distance of 384,400 km (238,900 mi), or about 30 times the diameter of the planet. A sidereal period of 27.3 days characterizes the Moon's orbit of the Earth.
Learn more about Moon's orbit here
https://brainly.com/question/15210185
#SPJ4
In a stable ecosystem, the number of predators _____________ if the number of prey increases. Question 12 options: Decreases Stays the same Increases Dies.
Answers
In a stable ecosystem, the number of predators increases if the number of prey increases.
What is the relation between predators and prey?Predators are the species that are dependent upon prey for their foods. predators actually hunt the prey for their food.
predators are the species that depend upon other living species like deer fish goats etc for example lions depend upon deer, zebras, etc.
while the preys are the species who depend upon the plants for their food so if the number of preys will be higher then the number of the predators will also be higher.
Thus In a stable ecosystem, the number of predators increases if the number of prey increases.
To know more about the Ecosystem follow
https://brainly.com/question/842527
This is a lab for science can you help with punctuation errors? Also where it says figures I have pictures :) (I am in 7th grade btw so no hate)
Leaf lab
Purpose: Find out if the leaf area of a given tree is bigger on the North or the Southside. Learn more advanced statistical analysis.
Research: To find the area of an irregular shape it’s whole + part ½ which is whole plus part divided by 2. The shape of the leaf will be traced. They are affected by the Earth's tilt and the sun because we are in the North Hemisphere.
Figure 1 is an example of the Earth’s tilt and how the sun gives a certain amount of heat to different parts of the Earth.
The south gets more sun it’s because the leaves burn while the north leaves get less sun. The north leaves are thinner but bigger in area than the leaves that get a lot of suns. This makes them smaller or bigger because one side might get more sun which makes north leaves bigger.
Hypothesis: The leaves on the Northside are bigger.
Procedure:
1. Collect 35 leaves from the Northside and 25 leaves from the Southside.
2. A tree that is not in shade.
3. Press the leaves flat.
4. Trace the leaves onto graph paper using both sides of the page keeping North and South separate.
5.Count whole (w) and partial squares (p) and calculate the area of each leaf in squares 6. with the equation A= W+ ½ P.
Figure 2 is an example of the equation A= W+ ½ P. There are 4 whole´s and 8 parts so the area is 8 inches squared because 4+ ½ 8= 8.
7. Create a north and South leaf data table.
8. Discard leaves afterward.
9. Put the leaf area in order from smallest to greatest in each table.
10. Find the mean, median, mode of the 2 data sets as well as the entire range of 50 leaf data sets.
11.Create a histogram
Use the range to find the size of 7 bins. USe the nearest whole number
Sort leaves
Count leaves and creates a chart
12.Create histograms of individual data using Microsoft Excel or google docs
5. Results: The north's side leaves are bigger than the south side by a few a lot,
6. Conclusion: It was a warm sunny day and windy. The experimenter gathered 25 leaves from the North and South sides with all different sizes and colors. The hypothesis was supported based on the data collected. One reason why it was supported was that the North overall average was greater than the South. The Northside leaves are greater is that it is proven by facts. If someone compared a random south leave to a random north leaf, most times the North would be bigger because the probability of getting a big leaf is higher for North rather than South. The second piece of evidence from my data is that the South bin had more leaves in smaller bins while the North bin had an equal amount of leaves in the high and low bins. The third piece of evidence is that the Northside leaves had a bigger average than the South leaves. Also, the Southside had the smallest leaf while the Northside had the biggest leaf. The entire group also supported this.
7. Errors and ways to improve: Try to get different trees and instead of picking a few leaves in a certain area in the north and south, pick random ones. Also, gather more and different leaves. Different weather conditions could affect the leaves.
Figure 3, is the north bin where most of the leaves are bigger.
Figure 4, the south bin where most of the leaves are smaller.
Figure 5, the class north bin where some most leaves are small but some are big.
Figure 6, the class south bin where mostly all of the leaves are small.
Figure 7 is the tree used to pick leaves off.
Answers
Answer:
First of all you should give more then 5 points for this.And the errors are you should add a space between all of the steps and info of the lab. And read everything over again and where you take a breath at or if you stop add a coma or a period.
The half-life of iodine-131 is 8.07 days. If 0.25 g are left after 40.35 days, how many gramswere in the original sample?
Answers
Given data
*The half-life of iodine-131 is t = 8.07 days
*The amount of quantity left is N = 0.25 g
*The number of days is T = 40.35 days
The expression for the radioactivity decay is given as
\(N=N_0(\frac{1}{2})^{\frac{T}{t}}\)Substitute the values in the above expression as
\(\begin{gathered} \text{0}.25=N_0(\frac{1}{2})^{\frac{40.35}{8.07}} \\ N_0=8\text{ g} \end{gathered}\)Answer:
See below
Explanation:
40.35 days / (8.07 day per half life) = 5 half lives
.25 = x ( 1/2)^5
.25 / ( 1/2)^5 = x = 8 gm originally
You calculated a equivalent capacitance of 0.72 μF ± 0.08 μF. If the manufacturer has labeled the capacitor as 0.5 μF ± 10%, is this consistent with your result?
Answers
To determine if the manufacturer's label is consistent with your calculated equivalent capacitance of 0.72 μF ± 0.08 μF, we need to compare the ranges of the values.
1. Determine the manufacturer's label range:
The manufacturer labeled the capacitor as 0.5 μF ± 10%. To find the range, we will calculate 10% of 0.5 μF.
0.5 μF * 10% = 0.05 μF
The range of the manufacturer's label is 0.5 μF ± 0.05 μF, meaning it could be between 0.45 μF and 0.55 μF.
2. Determine your calculated range:
You calculated the equivalent capacitance as 0.72 μF ± 0.08 μF. This means your calculated range is between 0.64 μF and 0.8 μF.
3. Compare the ranges:
Manufacturer's range: 0.45 μF to 0.55 μF
Your calculated range: 0.64 μF to 0.8 μF
Since there is no overlap between the two ranges, the manufacturer's label of 0.5 μF ± 10% is not consistent with your calculated result of 0.72 μF ± 0.08 μF.
To know more about equivalent capacitance:
https://brainly.com/question/30905469
#SPJ11
Need help this is a grade
Answers
Answer: C
Explanation: When you have a tomato for example, it absorbs every color but red and therefore, appears red.
A toy car with mass of 3.0kg is push along the table .If the net force on the book is 15.0N what is the toy car's accelaration?
Answers
Answer:
a = 5
Explanation:
F = M × A
15 = 3 × a
a = 15 / 3
a = 5
This is only if the toy can is pushing the book or smth coz the question looks incomplete...?
Answer:
5 m/s^2
Explanation:
Realize that Newton's Second Law explains that the net force is equal to the mass mulitplied by the acceleration, or in simple terms, F=ma. In the problem, the force is 15 newtons, and the mass is 3 kg. Substiting and dividing, we get 5 m/s^2 (5 meters per second squared).
What are the usual symbols we are using for the following properties of a star? brightness luminosity apparent magnitude absolute magnitude temperature mass Notice that two symbols are the same, and t
Answers
The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.
The usual symbols used for the following properties of a star are:
- Brightness: Usually represented by the symbol "B" or "m". It refers to the amount of light received from a star as observed from a particular location.
- Luminosity: Represented by the symbol "L". It refers to the total amount of energy radiated by a star per unit of time.
- Apparent Magnitude: Represented by the symbol "m". It is a measure of the brightness of a star as observed from Earth. Lower values indicate brighter stars.
- Absolute Magnitude: Also represented by the symbol "m". It is the intrinsic brightness of a star, defined as the apparent magnitude a star would have if it were placed at a standard distance of 10 parsecs (32.6 light-years) from the observer.
- Temperature: Represented by the symbol "T". It refers to the surface temperature of a star, typically measured in Kelvin.
- Mass: Represented by the symbol "M". It is the amount of matter contained in a star, typically measured in solar masses (M☉).
Note: The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.
To learn more about magnitude
https://brainly.com/question/30337362
#SPJ11
What is the weight of a 44-kg child?
Answers
Answer:
89-95 lbs :p
Explanation:
smsksjsjfjjd
Which of the following statements regarding lightning strikes is correct?
Select one:
A. Victims who are struck by lightning often experience severe full-thickness burns.
B. Cervical spine fractures are the most common cause of lightning-related deaths.
C. The tissue damage pathway caused by lightning usually occurs through the skin. Incorrect
D. Lightning often results in a brief period of asystole that resolves spontaneously.
Answers
The correct statement regarding lightning is as follows: Victims who are struck by lightning often experience severe full-thickness burns (option A).
What is lightning?Lightning is an electrical discharge caused by imbalances between storm clouds and the ground, or within the clouds themselves.
Lightning strike is a lightning bolt, stroke of lightning, one of the events during an electrical storm when lightning strikes (an object on) the ground or an aircraft in flight.
Most deaths after lightning strikes occur either because of primary cardiac arrest or hypoxia-induced secondary cardiac arrest, however, survivors have experienced debilitating injuries, burns and ongoing disability, including symptoms like seizures and memory loss.
Therefore, severe full-thickness burns are the symptoms or signs of lightning strike.
Learn more about lightning strike at: https://brainly.com/question/16471493
#SPJ1
A small car increases its speed from 10 m/s to 15 m/s. Its mass is 1,200 kg. What is the impulse?
A. 6,000 kg-m/s
B. 18,000 kg-m/s
C. 12,000 kg.m/s
D. 1,200 kg-m/s
Answers
Answer:
A
Explanation:
We know that impulse(J) is the force times the change in time OR mass times the change in velocity. Because we're given mass and a final and initial velocity, we'll use the second option written as:
mΔv=J
Since Δ means change in, and Δv= vf-vi, we subtract 10 m/s from 15 m/s to get 5 m/s for Δv.
Now plugging in Δv and m(1,200 kg)
1,200 kg * 5 m/s =J
6000 kg* m/s = J
What characteristics make a mixture not a pure
sub-
stance
Answers
Mixture is not a pure substance because it is made of more than one particle while a pure substance is made of one particle
What is the weight of an object (mass = 60 kilograms) on Mars, where the acceleration due to gravity is 3.75 meters/second2?
Answers
Answer:
weight = 225 N
Explanation:
We are asked to calculate the weight of an object of mass 60 kg on Mars given that the acceleration due to gravity (g) on Mars is 3.75 m/s². We can do so using the following formula:
\(\boxed{W = mg}\),
where:
• W = weight of object in Newtons (N)
• m = mass of object in kg
• g = acceleration due to gravity in m/s².
Substituting the given data into the formula above, we can calculate the weight of the object:
W = 60 × 3.75
= 225 N
Therefore the weight of the 60 kg object on Mars is 225 N.
A fly wheel of mass 500kg and radius 1m makes 500 revs/min. Assuming the mass is concentrated along the rim, calculate the energy of the rim
Answers
The energy of the flywheel can be calculated using the equation E = \(0.5Iw^2\), where I is the moment of inertia and ω is the angular velocity.
For a flywheel with a radius of 1m and mass of 500kg, the moment of inertia is\(500 x (1m)^2 = 500 kg-m2.\) The angular velocity is 500 revolutions per minute, which is equivalent to 8.667 rad/s. Plugging these values into the equation gives us \(E = 0.5 x 500 x (8.667)^2 = 35,584.7 J.\)
The energy of a flywheel is the energy stored in the kinetic form due to its rotation. It is defined as the product of the moment of inertia and the square of the angular velocity of the flywheel.
The energy stored in the flywheel is proportional to the square of the angular velocity and is also proportional to the moment of inertia. The greater the angular velocity, the more energy is stored in the flywheel.
Learn more about The energy of a flywheel:
https://brainly.com/question/14508487
#SPJ4
What is eustress in your own words?
Answers
Eustress in over own words is a constructive type of stress that has favorable effects on one's health, drive, ability to perform, and emotional stability.
The term "eustress" refers to stress that results in a beneficial response in the body. It is the reverse of distress and can apply to any form of stress, whether physical or psychological, that is helpful to the individual. It is typically exhilarating and usually only lasts for a brief period of time. People have the impression that this particular form of stress is controllable and can even be motivational. Eustress in over own words is a constructive type of stress that has favorable effects on one's health, drive, ability to perform, and emotional stability.
You can also learn about eustress from the following question:
https://brainly.com/question/1449392
#SPJ4
The power of a PV panel is rated at the peak solar insolation of 1000 W/m2. The size of a typical 300 W PV panel is about 2.0 m2. (a) What is the efficiency of such PV panels? (b) If you install 10 pieces of 300 W PV panels on your house roof top in Wyoming, how much electrical energy is it produced daily? Assume on average, the peak sun hours in the Wyoming area are 3.2 hours. (c) If 50% of the energy collected by the PV panel is used to heat up the water in your home water heater, it can supply to heat up how many gallons of water from 15 C to 55 C? 1 liter of water weighs 1 kg in mass, 1 gallon = 4.546 liters, 1 kWh = 3.6x106 J
Answers
(a) The efficiency of the PV panel can be calculated using the formula:Efficiency = (Power output / Power input) × 100Where,Power output = The power generated by the PV panel (300 W in this case)Power input = The solar insolation (1000 W/m2 in this case) × Area of the panel (2.0 m2 in this case)Efficiency = (300 / (1000 × 2)) × 100= 15%
(b) The total power generated by 10 pieces of 300 W PV panels is given as:Total power = Power of 1 panel × Number of panels= 300 × 10= 3000 WPeak sun hours in Wyoming = 3.2 hours Therefore, the total energy produced daily is given as:Energy produced = Total power × Peak sun hours= 3000 × 3.2= 9600 Wh or 9.6 kWh(c) The energy produced by the PV panel is given as:Energy produced = Power output × Time= 300 × 3.2 × 50/100= 48 kWh= 48,000 Wh= 48,000 / 3.6 × 106 kWh= 0.013 kWh or 13 Wh Weight of 1 gallon of water = 4.546 × 1 = 4.546 kg Mass of water = Volume × Density= 4.546 × 15 = 68.19 kg= 68.19 / 1 = 68.19 liters
Heat required to increase the temperature of 1 liter of water from 15°C to 55°C is given as:Heat = mass × specific heat capacity × temperature rise= 1 × 4.18 × (55 - 15)= 209.2 JHeat required to increase the temperature of 68.19 liters of water from 15°C to 55°C is given as:Heat = 68.19 × 209.2 J= 14,250 J or 0.01425 kWh Energy produced by the PV panel is 0.013 kWh Therefore, the number of gallons of water that can be heated up is given as:Number of gallons = Energy produced / Heat required= 0.013 / 0.01425= 0.91 gallons Therefore, the PV panel can supply to heat up 0.91 gallons of water from 15°C to 55°C.
To know more about Efficiency visit:-
https://brainly.com/question/31458903
#SPJ11
red sunsets are due to light of lower frequencies that
Answers
Red sunsets are due to light of lower frequencies that are more capable of making their way through the Earth’s atmosphere. Sunsets take on different colors and shades because of the way that sunlight interacts with the Earth's atmosphere.
When the sunlight passes through the atmosphere, molecules and small particles in the air scatter different colors of light. This leads to colorful skies at sunrise and sunset. When the sun is low on the horizon, the sunlight must pass through more of the Earth’s atmosphere before reaching the observer's eye.
At sunrise or sunset, the light that reaches the observer's eye has a longer path through the atmosphere than light at noon. The Earth's atmosphere scatters blue light more efficiently than it scatters the lower-frequency colors. This scattering effect sends more blue light away from the viewer's line of sight. This makes the sky look blue. When sunlight passes through the atmosphere, molecules and small particles in the air scatter different colors of light.
When the sun is low on the horizon, the sunlight must pass through more of the Earth’s atmosphere before reaching the observer's eye. At sunrise or sunset, the light that reaches the observer's eye has a longer path through the atmosphere than light at noon. The Earth's atmosphere scatters blue light more efficiently than it scatters the lower-frequency colors. This scattering effect sends more blue light away from the viewer's line of sight, making the sky look blue
In conclusion, Red sunsets are due to light of lower frequencies that are more capable of making their way through the Earth’s atmosphere. Sunsets take on different colors and shades because of the way that sunlight interacts with the Earth's atmosphere.
To know more about frequencies, visit:
https://brainly.com/question/254161
#SPJ11
Particles of light are known as A. electrons. B. neutrinos. C. photons. D. bosons.
Answers
Answer:
C. photons
hope this helps
have a good day :)
Explanation:
Answer:
The answer would be c
Explanation: