At t = 0 a rock is projected from ground level with a speed of 15.0 m/s and at an angle of 53.0∘ above the horizontal. Neglect air resistance
Three parts answer all parts
A. At what two times t1t1 and t2t2 is the rock 5.00 mm above the ground? (Suppose that t1
Express your answers in seconds separated by a comma.
B
What are the horizontal and vertical components of the velocity of the rock at time t1t1 calculated in part A? Let v0xv0x and v0yv0y be in the positive xx- and yy-directions, respectively.
Express your answers in meters per second. Enter the x and y components of the vector separated by a comma.
C
What are the horizontal and vertical components of the velocity of the rock at time t2t2 calculated in part A? Let v0xv0x and v0yv0y be in the positive xx- and yy-directions, respectively.
Express your answers in meters per second. Enter the x and y components of the vector separated by a comma.
Answers
A) The rock is 5.00 mm above the ground at times t₁ = 1.25 s and t₂ = 0.069 s ; B) velocity vector at time t₁ is: v₁ = (9.83 m/s, -1.08 m/s) ; C)The velocity vector at time t₂ is: v₂ = (9.83 m/s, 10.1 m/s)
A. To find the times t₁ and t₂ when the rock is 5.00 mm above the ground, we can use the equations of motion for projectile motion. Since the vertical displacement of the rock is given as 5.00 mm, we can write:
y = y₀ + v₀y t - 0.5gt²
where y₀ is the initial vertical position (which is 0), v₀y is the initial vertical velocity (which can be found from the given initial speed and angle), g is the acceleration due to gravity (-9.81 m/s²), and t is the time.
Solving for t, we get:
t = (v₀y ± √(v₀y² - 2gy)) / g
Since we want the rock to be 5.00 mm above the ground twice, we need to find the two roots of this equation. Substituting the given values, we get:
v₀y = 15.0 m/s × sin 53.0° = 11.9 m/s
y = 5.00 × 10⁻³ m
Plugging in these values, we get:
t₁ = (11.9 + √(11.9² + 2 × 9.81 × 5.00 × 10⁻³)) / 9.81 = 1.25 s
t₂ = (11.9 - √(11.9² + 2 × 9.81 × 5.00 × 10⁻³)) / 9.81 = 0.069 s
Therefore, the rock is 5.00 mm above the ground at times t₁ = 1.25 s and t₂ = 0.069 s.
B. To find the horizontal and vertical components of the velocity of the rock at time t₁, we can use the equations of motion again. The horizontal velocity is constant and can be found from the initial speed and angle:
v₀x = 15.0 m/s × cos 53.0° = 9.83 m/s
The vertical velocity can be found by differentiating the equation for y:
v = v₀y - gt
Substituting t₁, we get:
v₁ = 11.9 - 9.81 × 1.25 = -1.08 m/s (downward)
Therefore, the velocity vector at time t₁ is:
v₁ = (9.83 m/s, -1.08 m/s)
C. To find the horizontal and vertical components of the velocity of the rock at time t₂, we can use the same method as in part B. Substituting t₂, we get:
v₂ = 11.9 - 9.81 × 0.069 = 10.1 m/s (upward)
Therefore, the velocity vector at time t₂ is:
v₂ = (9.83 m/s, 10.1 m/s)
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To solve this problem, we use kinematic equations to find the times when the rock is 5.00 mm above the ground and the components of velocity at those times.
Explanation:To solve this problem, we can use the kinematic equations to analyze the motion of the rock.
Part A:When the rock is 5.00 mm above the ground, we need to find the times at which this happens. We can use the vertical motion equation to calculate the time:
y = y0 + v0y * t - 0.5 * g * t^2y = 5.00 mm = 0.005 m (since mm is converted to m)y0 = 0 m (initial height)v0y = 15.0 m/s * sin(53.0°)g = 9.8 m/s^2By substituting these values into the equation, we can solve for t to find the two times.
Part B:Once we have the times t1 and t2, we can use the horizontal and vertical motion equations to find the components of velocity at those times.
v1x = v0xv1y = v0y - g * t1Part C:Using the same equations, we can find the components of velocity at time t2.
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Related Questions
A rock was dropped from a bridge over a river
If the rock was released when it was 11.2 m above the water and it took 0.550 s to reach the water, what its velocity when it was released?
Answers
u = 17.67 m/s
Which legal measure allowed whites in southern states to keep blacks from voting after reconstruction ended?.
Answers
Jim Crow laws was the legal measure which allowed whites in southern states to keep blacks from voting after reconstruction ended.
What was JIm Crow law?These were the state and local laws which enforced racial segregation in the Southern part of the United States.
Due to this laws, whites in southern states kept blacks from voting after reconstruction ended.
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c) Name the type of error described in the two cases of measurements below. Case 1: A stopwatch that runs fast or slow. Case 2:
Answers
The description of the measurement is incomplete, and therefore it is impossible to determine the type of error.
What is Measurement?
Measurement is the process of quantifying or determining the size, amount, or degree of something using standard units or scales. It involves assigning a numerical value to a physical quantity, property, or characteristic of an object, event, or phenomenon.
Measurement is a fundamental tool used in science, engineering, commerce, and everyday life. It allows us to make comparisons, establish standards, and assess the accuracy and precision of our observations and experiments. Some common examples of measurements include length, mass, time, and volume, which are typically expressed in units such as meters, kilograms, seconds, degrees Celsius, and liters, respectively.
The error described in this case is systematic error, also known as a bias. The stopwatch consistently measures time intervals that are either longer or shorter than the actual time.
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how to convert 40m/min to km/h? need step by step explanation
Answers
How to convert m/sec into km/hr
1 m = 1/1000 km; 1 sec = 1/3600 hr
1 m/sec = 3600/1000 km/hr = 18/5 km/hr
To convert m/sec into km/hr, multiply the number by 18 and then divide it by 5.
Need detail explanation? Go to bottom
Solved Example 1:
Convert 20 m/sec into km/hr.
Solution:
20 m/sec
Step 1:
Multiply 20 by 18
We have 20 * 18 = 360
Step 2:
Divide 360 by 5
360/5 = 72
Final Answer:
20 m/sec = 72 km/hr
Try yourself: Practice Sheet 1
Solved Example 2:
Convert 36 m/sec into km/hr.
Solution:
36 m/sec
Step 1:
Multiply 36 by 18
We have 36 * 18 = 648
Step 2:
Divide 648 by 5
648/5 = 129.6
Final Answer:
36 m/sec = 129.6 km/hr
Try yourself: Practice Sheet 2
Better Understanding:
The problem can be solved using an unitary method.
A shopkeeper sells each pencil for 5 cents. How much do 4 pencils cost? 4 * 5 cents= 20 cents, isn't it? What is the cost of 7 pencils? Yes, your guess is right. It is 7 * 5 cents = 35 cents.
Let us work out the problem in example 1 as it explained here.
20 m/sec = 360/5 = 72 km/hr
If you measure the average brightness and pulsation period of a cepheid variable star, you can also determine its?
Answers
If you measure the average brightness and pulsation period of a cepheid variable star, you can also determine its distance.
Cepheid variable stars belong to a class of stars that have a distinct relationship between variation period and luminosity.
Their period of cycle and luminosity are closely related to each other and they differ in temperature and diameter.
As their brightness increases and decreases, therefore, it helps out in the measurement of intergalactic and interstellar distances.
The changes in amplitude of their motion and cycle period have a definite impact on their brightness which enables us to determine their distance.
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what kind of potential energy is mgh used to calculate
Answers
The potential energy (PE) represented by mgh (mass, gravitational acceleration, and height) is called gravitational potential energy (GPE).
The term GPE refers to the potential energy possessed by an object due to its height in the Earth's gravitational field. This energy is stored in the object, and it has the potential to do work because of its position.
Gravitational potential energy is a type of potential energy that is calculated using the equation mgh. Gravitational potential energy is the energy stored in an object due to its position in a gravitational field. This type of energy is based on the distance between two objects and the gravitational force between them. Gravitational potential energy is related to the object's mass and the height it is located above the ground. The formula mgh is used to determine the potential energy stored in the object. In this equation, m is the mass of the object, g is the acceleration due to gravity, and h is the height above the reference point. The unit of gravitational potential energy is Joules (J).
Gravitational potential energy is a type of potential energy that is used to describe the energy stored in an object due to its position in a gravitational field. Gravitational potential energy is equal to the mass of the object times the acceleration due to gravity times the height above the reference point. Gravitational potential energy is measured in Joules (J).
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Juanita studies several free-body diagrams in which a normal force is shown. What is always true about a normal force in a free-body diagram?
Answers
Answer: B
Explanation: it is perpendicular to a surface
Answer:
it is perpendicular to a surface
Explanation:
Find the center of mass of a 50-cm long rod, made of 25 cm of iron (density 9 g/cm3) and 25 cm of aluminum (density 3.2 g/cm3). Express the location of the center of mass as measured from the left of the rod, assuming that the iron part of the rod is on the left and the aluminum part is on the right.
Answers
Answer:
The center of mass is at -1.58 cm, that is towards the left of the origin, or towards the copper end.
Explanation:
Given information: Let the length of the rod is 2l = 100cm
A 2.00 m long string transmits
waves at 12.9 m/s. At what
frequency will it create standing
waves with 3 loops?
(Unit = Hz)
Answers
Answer:
The frequency at which the string will create a standing wave be with three loops is 8.6 Hz
Explanation:
The speed of the of the wave, v = 12.9 m/s
The number of loops of the standing wave = 3 loops
The length of the string = 2.00 m
Given that one loo = half of the wavelength, we have;
Three loops = 3 × half = One and half wavelength = 1.5·λ
The frequency of a wave = f = v/λ
Therefore, we have;
The frequency, f = 12.9/1.5 = 8.6 Hz
The frequency at which the string will create a standing wave be with three loops = 8.6 Hz.
Answer:
9.675
Explanation:
got it right on acellus
The atmospheric pressure is 1 ATM.What does it mean?
Answers
Answer: the atmospheric pressure is generally expressed in terms of the height of the mercury column.at normal temperature and pressure, the barometric height is 760mm at sea level which is taken as one atmosphere. thus atmospheric pressure is also expressed in a unit atmosphere where 1 atm= 0.76m of hg. 9
Which event is an example of condensation?
A. Wet clothes are drying on a clothesline.
B. A mirror fogs up when someone takes a hot shower.
C. Water drips from an icicle on the edge of a roof.
O D. Rain turns to sleet as it nears the ground.
Answers
Answer:
the answer to your question is b a mirror fogs up when someone takes a hot shower.
The process of conversion of gaseous water to its liquid form is called condensation. The fogs formed on the mirror from the hot shower is an example of condensation.
What is condensation?Condensation is the process of cooling up of water vapor to liquid water. Water vapor condenses when it cools. Condensation can be best understood from the reason behind raining.
When water vaporizers from resources and cools from the sky, and the vapor condenses to form liquid droplets. Similarly we can observe water droplets in the window pane due to the similar effect.
The water vapor arises from the hot shower condenses in the atmosphere and forms the drops on the mirror. Therefore, the mirror fogs up by the hot shower is an example of condensation.
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How does radiant energy transform into
chemical energy?
Answers
Answer:
The radiant energy, which can convert to heat and or living systems that also can convert it into what we call chemical energy. An example would be, a potato plant that we know can capture photons, which then can convert to what is called light energy, also this is through photosynthesis, this is storing the chemical energy underground as carbohydrates.
What are some of the payoffs
companies receive when offering child care
benefits to employees?
Answers
Answer:
Some of the payoffs companies receive when offering child care benefits to employees;
1) Employees are proud to tell others they work for such establishments which make the establishment attractive to talents
2) Reduced attrition for work place policy
3) Increased loyalty of the employees to the companies mission
4) Workers are less likely to take work appointment in other places
5) Child care offering are some of the aspects workers consider when searching for jobs
6) Companies can enjoy tax breaks
Explanation:
A Rac variant, in which the residue at position 61 was replaced with an alanine (Rac61A), was synthesized. Wild-type Rac and Rac61A were incubated separately with VopC. To obtain data to support that VopC modifies Rac at residue 61, the samples should be analyzed for the presence of which compound?
Answers
Answer:
Ammonia, \((NH_{3})\)
Explanation:
If a Rac variant, in which the residue at position 61 was replaced with an alanine (Rac-61A), was synthesized. Also, Wild-type Rac and Rac-61A were incubated separately with VopC.
In order to obtain data to support that VopC modifies Rac at residue 61, the samples should be analyzed for the presence of Ammonia (\(NH_{3}[\tex]) compound.
In chemistry, the Vanadyl Phthalocyanine (VopC) comprises of a catalytic domain that activates host cells GTPase Rac irreversibly, through the deamide side chain of the residue existing at position 61.
Also, we know that a deamidation reaction gives off Ammonia, \((NH_{3})\) and as such when ammonia is present in the sample containing Wild-type Rac but not in Rac-61A, this simply proves or provide the data to support that VopC modifies Rac at residue 61.
Additionally, deamidation can be defined as the chemical conversion (hydrolysis) of an amide functional group such as glutamine, asparagine, in a polypeptide to another functional group such as glutamic acid or isoaspartic acid respectively by treating it with a strong acid (deamidate, transamidase).
what is the state of the electrical charge when a neuron is at resting potentia
Answers
When a neuron is at resting potential, the state of the electrical charge is negative inside the neuron compared to the outside
Because of an unequal distribution of ions like potassium (K+) and chloride (Cl-) inside and outside the neuron, the interior of the neuron is negatively charged at resting potential. The membrane of the neuron is selectively permeable, permitting certain ions to pass while preventing others from doing so. A gradient in electrochemistry results from this.
Ion channels, notably the sodium-potassium pump, which actively transfers sodium ions (Na+) out of the neuron and potassium ions (K+) into the neuron, are responsible for maintaining the resting potential. As a result, the neuron produces an excess of negative charge within and an excess of positive charge outside.
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Describe how the ASC PPS conversion factor is different from the OPPS conversion factor?
What is the definition of palliative care?
use your own words
Answers
The ASC PPS conversion factor is different from the OPPS conversion factor because of the following reason:
ASC PPS Conversion factor: The Ambulatory Surgical Center Payment System (ASC PPS) is a Medicare payment system for ASC services, and it is determined by multiplying the ASC national conversion factor by the relative weight of the APC. ASC PPS conversion factors are adjusted for changes in inflation and other factors.OPPS Conversion factor: The Outpatient Prospective Payment System (OPPS) conversion factor is used to calculate Medicare payments for outpatient hospital services, and it is adjusted annually based on changes in inflation and other factors.The OPPS conversion factor is applied to each APC to determine payment rates for outpatient services. Furthermore, Palliative care is specialized medical care that aims to improve the quality of life for individuals with serious illnesses. It is focused on relieving symptoms and stress associated with serious illnesses. The goal of palliative care is to help patients feel more comfortable and enhance their quality of life. Palliative care is not the same as hospice care because it is given to patients at any stage of an illness, and it may be provided alongside curative treatments.
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what was Galleos contribution to the study of motion ?
Answers
Answer:
B ) He was the first to systematically study force and motion.
Explanation:
I seen this one before and know the answer since there's 4 options
yo help please i’ll give u a brainliest
Answers
Can someone please explain to me why the direction at the final answer is said to be left.
Answers
Answer:
See Explanation
Explanation:
According to the diagram, the +3.5 nC arrow is in the positive direction whereas the +4 nC arrow is in the negative direction. Thus, the question defines the positive direction as the "right" and the negative direction as the "left." Since the instructions ask you to calculate the "force exerted on the +4 nC charge," the answer would be a negative force, or rather a force acting to the left.
You drive a car 660 ft to the east, then 370ft to the north. (a) What is the magnitude of your displacement? (b) Using a sketch, estimate the direction of your displacement (c) Verify your estimate in part (b) with a numerical calculation of the direction
Answers
Answer:
a) 756.64 ft
b) 30 degrees
c) 29.27 degrees.
Explanation:
We can represent the situation as follows:
So, we can find the magnitude of the displacement (the green line) using the Pythagorean theorem. Then:
\(\sqrt[]{660^2+370^2}=\sqrt[]{435600+136900}=\sqrt[]{572500}=756.64\text{ ft}\)Then, the angle of the displacement can be approximate finding the angle θ. So, using a protractor on the figure, we get that θ is approximately 30 degrees.
Now, we can find the direction using a trigonometric function as:
\(\tan \theta=\frac{370}{660}\)Because 370 is the opposite side and 660 is the adjacent side. Therefore, the value of θ is:
\(\begin{gathered} \tan \theta=0.5606 \\ \theta=\tan ^{-1}(0.5606) \\ \theta=29.27\text{ degrees} \end{gathered}\)So, the answers are:
a) 756.64 ft
b) 30 degrees
c) 29.27 degrees.
Explain the importance of units by
sharing an example of a situation that could go wrong because there are no units
Answers
Answer:
Look below
Explanation:
Units are very important. Let's say we were building an apartment. We used meters for every measurement except for 1 support where we used centimeters. This could lead to the collapse of the whole structure as the measurements were wrong. 100 meters and 100 centimeters are very different.
The unit of measurement is very important. A measurement tells us about the property of something. It tells us how heavy an object is, or how long an object is. A measurement gives us a number to that property.
What's a unit in science?A unit is any standard used for making comparisons in measurements. Unit conversions allow for measurements of a property that have been recorded using different units—for instance, centimetres to inches.
Why are units important when measuring quantities?Units are important when measuring quantities because units allow people to communicate amounts uniformly in a way that can be understood by others.
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As we look at larger and larger scales in the universe, we find A) an equal amount of visible and dark matter.
B) smaller and smaller masses.
C) a larger and larger percentage of the matter is dark.
D) a larger and larger percentage of the matter is visible.
E) almost exclusively visible matter.
Answers
As we look at larger and larger scales in the universe, we find that C) a larger and larger percentage of the matter is dark.
Dark matter refers to matter that does not interact with light or other forms of electromagnetic radiation, making it invisible or "dark" in terms of our current observational techniques. Its presence is inferred through its gravitational effects on visible matter and the structure of the universe.
Observations at different scales, such as the rotation of galaxies, the motion of galaxy clusters, and the distribution of cosmic microwave background radiation, have indicated the existence of dark matter. These observations suggest that dark matter makes up a significant portion of the total matter in the universe.
While visible matter, including stars, galaxies, and other objects we can directly observe, does exist, it constitutes only a small fraction of the total matter in the universe. The majority of matter, around 85% based on current estimates, is believed to be dark matter.
As we look at larger scales, such as galaxy clusters and the cosmic web, the dominance of dark matter becomes more apparent. It plays a crucial role in the formation and evolution of large-scale structures in the universe, providing the gravitational scaffolding for the visible matter to coalesce and form galaxies.
Therefore, option C) a larger and larger percentage of the matter is dark is the correct answer.
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Part A Which electron is, on average, closer to the nucleus: an electron in a 2s orbital or an electron in a 3s orbital? Match the items in the left column to the appropriate blanks in the sentences on the right. The size of the orbital is determined by the ___ quantum number, so the size of the orbital ___ as this value increases. Therefore, an electron in a ___ orbital is closer to the nucleus than is an electron in a ___ orbital 1. n
2. ml
3. l
4. 3s
5. decreases 6. increases 7. 2s
Answers
The size of an orbital is determined by the principal quantum number (n). As this value increases, the size of the orbital increases. Therefore, an electron in a 2s orbital is closer to the nucleus than an electron in a 3s orbital.
The principal quantum number (n) describes the energy level or shell of an electron. Higher values of n indicate higher energy levels, and as the energy level increases, the size of the orbital also increases. This means that an electron in a higher energy level orbital is, on average, farther from the nucleus compared to an electron in a lower energy level orbital.
In this case, the 2s orbital has a lower principal quantum number (n = 2) compared to the 3s orbital (n = 3). Since the 2s orbital has a smaller size, the electron in the 2s orbital is closer to the nucleus on average than the electron in the 3s orbital. Therefore, the electron in the 2s orbital experiences a stronger attractive force from the nucleus and is more tightly bound.
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A sprinter is running toward the finish line at 7 m/s. When he is 12 m away from the finish line, he begins to fatigue and slows at a rate of -0.6 m/s^2 . How fast is he running when he crosses the goal line? *Round your answer to the nearest hundredth.
Answers
Answer:
5.88 m/s
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 7 m/s
Acceleration (a) = –0.6 m/s²
Distance (s) = 12 m
Final velocity (v) =.?
We, can determine how fast the sprinter is running when he crosses the goal line as follow:
v² = u² + 2as
v² = 7² + (2 × –0.6 × 12)
v² = 49 + (–14.4)
v² = 49 – 14.4
v² = 34.6
Take the square root of both side
v = √34.6
v = 5.88 m/s
Therefore, the sprinter is running at a speed of 5.88 m/s when he crosses the goal line.
The force of gravity by the Sun keeps the planets in orbit around it, but how do the planets affect the Sun?
Answers
They each pull equally hard, forcing the Sun to shift slightly. when the Sun's gravitational pull holds the planets in their orbits,
The average period of the solar cycles, including irradiance, sunspots, solar flares, radio flux, and polarity flip, is 11 Earth years. According to scientists, the Sun's internal processes and atmospheric interactions are what cause various solar activity. According to the authors, these behaviours and cycles also have an outside origin. Because planets need external constant loading to support their ongoing internal processes and dynamic systems. Here, the Sun's dynamical system and internal processes are activated by the planets' uneven gravitational fields, particularly by the biggest planet in the solar system, Jupiter, which has 67 moons and an orbital period of 11.856 years. As a result, distinct solar cycles are produced.
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The Keck Telescope has a diameterof 10.0 m. When it is looking atMars, 7.38 1010 m from us, how farapart are the closest objects it couldpossibly resolve? Assume the lighthas wavelength 633 nm.[?] m
Answers
Given:
Diameter, D = 10.0 m
Distance, x = 7.38 x 10¹⁰ m
Wavelength, λ = 633 nm
Let's find how far apart the closest objects it could possibly resolve.
First, apply the formula for the angle for angle separation (limit of resolution):
\(\theta=\frac{1.22\lambda}{D}\)Thus, we have:
\(\begin{gathered} \theta=\frac{1.22*633\times10^{-9}}{10.0} \\ \\ \theta=\frac{7.7226\operatorname{\times}10^{-7}}{10.0} \\ \\ \theta=7.7226\operatorname{\times}10^{-8}\text{ rad} \end{gathered}\)Now, to find the distance of the closest objects, we have:
\(d=\theta *x\)Thus, we have:
\(\begin{gathered} d=7.7226\times10^{-8}*7.38\times10^{10} \\ \\ d=5699.28\text{ m} \end{gathered}\)Therefore, the distance of the closest objects is 5699.28 meters.
• ANSWER:
5699.28 m
Every force applied to an object will cause the object to move.
Answers
Answer:
Yes your correct.
Explanation:
A scientist predicts that it will rain tomorrow. What might cause this
prediction to be inaccurate?
A. The movement of the Moon
B. The movement of Mars around the Sun
C. An increase in highway traffic
D. A change in wind patterns
Answers
Answer:
i think it is a
it may be d tho
Explanation:
let me know in comments what it is
An 8kg mass has a KE of 144j, what is its velocity
Answers
Answer:
6m/s
Explanation:
KE=m*v^2/2
=>v=(2*KE/M)^(1/2)
What is the type of radioactive decay represented by the equation above? A. Gamma B. Fusion C. Alpha D. Fission 40. Alberta uses clean coal technology. This means that the coal has a lower i content than coal in other parts of Canada, which results in reduced ii The statement above is completed correctly by the information in row olla sdf to ridW Row i A. sulfur greenhouse gas emissions acid deposition sulfur carbon greenhouse gas emissions acid deposition carbon B. C. D. 29. Which of the following graphs depicts the relationship between gravitational field strength and the mass of the International Space Station orbiting Earth? A. Field Strength (N/kg) C. Field Strength (N/kg) Mass (kg) Mass (kg) B. Field Strength (N/kg) D. Field Strength (N/kg) Mass (kg) CADLC 30. Which of the following sequences of colours represents the changing temperatu from the surface to the atmosphere of the sun? a A. Red, orange, yellow, blue B. Yellow, red, orange, blue C. Orange, yellow, blue, red D. Blue, yellow, orange, red 1. When a star undergoes a blue shift, the star is A. moving away from an observer B. moving towards an observer C. moving parallel to an observer D. stationary Mass (kg)
Answers
The sun is Yellow, red, orange, and blue. Therefore option B is correct.
The star is moving toward an observer. Therefore option B is correct.
39. The type of radioactive decay represented by the equation provided Gamma. Therefore option A is correct.
40. The statement is completed correctly by the information which states that the coal in Alberta has a lower carbon content than coal in other parts of Canada, resulting in reduced greenhouse gas emissions.
29. graph B depicts the relationship between gravitational field strength and the mass of the International Space Station orbiting Earth.
30. The correct sequence of colors representing the changing temperature from the surface to the atmosphere of the sun is Yellow, red, orange, and blue. Therefore option B is correct.
1. When a star undergoes a blue shift, it indicates that the star is moving toward an observer. Therefore option B is correct.
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