Explain the quantization of energy.
Answers
Answer:
The quantization of energy refers to the fact that at subatomic levels, energy is best thought of as occurring in discreet "packets" called photons. Like paper money, photons come in different denominations. ... Each photon contains a unique amount of discreet energy
Related Questions
Calculate the KE in joules of a 1500 kg car moving at 29 m/s?
Answers
Answer:
x J = (1500 kg)(29 m/s)(y m/s)
Explanation:
x J = (1500 kg)(29 m/s)(y m/s)
To know that a 1500 kg car is moving at 29 m/s is not enough.
The value of x depends on y. You’re missing a number of meters and a quantity of ‘per seconds’ somewhere in your problem statement and you need to find them in order to solve the problem
Which of the following best demonstrates Newton's Third Law?
Question 3 options:
The harder you kick a soccer ball, the faster it accelerates
An object sitting on the ground will stay there until somebody or something pushes it
Wearing a seatbelt prevents you from continuing to move when the car has stopped
When you walk your foot pushes down on the ground while the ground pushes back on your foot
Answers
Answer:
when you walk your foot pushes down on the ground, while the ground pushes back on your foot
Explanation:
it was another brainly question, Goodluck :)
PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick a subject
Answers
Answer:
Answer 4, 11k/min
Explanation:
From 0 - 1 km, it took 12 minutes
From 1 - 2 km, it took 10 minutes.
10 + 12 = 22
Divide the time by 2 km. 22/2 = 11
Calculate the efficiency of an engine if the work input is 300. J and the work output is 100. J
Answers
Answer:
33.33%
Explanation:
take efficiency =power output/power input multiply by 100%
why the shape of the earth is spherical
Answers
Answer:
The Earth is massive enough that the pull of gravity maintains its roughly spherical shape. Most of its deviation from spherical stems from the centrifugal force caused by rotation around its north-south axis. This force deforms the sphere into an oblate ellipsoid.
what scientists were most involved in the copernican revolution
Answers
ᴄᴏᴘᴇʀɴɪᴄᴜꜱ' ᴛʜᴇᴏʀʏ ʟᴇᴅ ᴛᴏ ᴄʀɪᴛɪᴄᴀʟ ᴅᴇᴠᴇʟᴏᴘᴍᴇɴᴛꜱ ɪɴ ᴘʜʏꜱɪᴄꜱ ᴀɴᴅ ᴀꜱᴛʀᴏɴᴏᴍʏ ʙʏ ᴛʜʀᴇᴇ ᴏꜰ ʜɪꜱ ꜱᴜᴄᴄᴇꜱꜱᴏʀꜱ, ᴛʏᴄʜᴏ ʙʀᴀʜᴇ, ᴊᴏʜᴀɴɴᴇꜱ ᴋᴇᴘʟᴇʀ, ᴀɴᴅ ɢᴀʟɪʟᴇᴏ ɢᴀʟɪʟᴇɪ. ᴀꜱ ᴀ ʀᴇꜱᴜʟᴛ ᴏꜰ ᴛʜᴇɪʀ ᴡᴏʀᴋ, ᴛʜᴇ ᴄᴏᴘᴇʀɴɪᴄᴀɴ ᴍᴏᴅᴇʟ ʜᴀᴅ ɴᴇᴀʀ ᴜɴᴀɴɪᴍᴏᴜꜱ ꜱᴜᴘᴘᴏʀᴛ ᴡɪᴛʜɪɴ 150 ʏᴇᴀʀꜱ ᴏꜰ ᴛʜᴇ ᴘᴜʙʟɪᴄᴀᴛɪᴏɴ ᴏꜰ ᴅᴇ ʀᴇᴠᴏʟᴜᴛɪᴏɴɪʙᴜꜱ. (ᴛʜᴇ ᴄᴏᴘᴇʀɴɪᴄᴀɴ ʀᴇᴠᴏʟᴜᴛɪᴏɴ 227).
A cube of iron, 0.0800 m on a side,
has a density of 7874 kg/m^3.
what is its mass?
Answers
If a cube of iron, 0.0800 m on a side, has a density of 7874 kg/m³, the mass of the iron cube is 4.03 kg.
To find the mass of the iron cube, we need to use the formula:
density = mass / volume
Rearranging the formula to solve for mass, we get:
mass = density x volume
The volume of the cube can be calculated as:
volume = side³
Substituting the given values, we get:
volume = (0.0800 m)³ = 5.12 x 10^-4 m³
Now we can calculate the mass of the cube:
mass = density x volume
mass = 7874 kg/m³ x 5.12 x 10^-4 m³
mass = 4.03 kg
Therefore, the mass of the iron cube is 4.03 kg.
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A student decides to conduct a comparative investigation to study properties of elements.What is a benefit of conducting a comparative investigation rather than a descriptive investigation?
a It will be less time-consuming to collect data about elements.
b It will show a cause-and-effect relationship between two properties of elements.
c It will be less expensive to collect data and make observations about elements.
d It will provide much more information about properties of elements.
please answer right I'm on an exam and show picture to show right if u can
Answers
Answer:its b
Explanation: i took the test
the maximum amount of weight a jack can lift is called its
Answers
The "Load Capacity" of a jack refers to the greatest weight it can support. Maximum weight of cargo that has been authorised by the country where the vehicle was registered.
Define the term Load Capacity?We can determine the necessary minimum capacity for a trailer jack by analysing the concentration of loads in a typical trailer.
The capacity should take into consideration both the jack's responsibility to sustain the weight and the lifting mechanism's capability to lift it.The tongue of a conventional trailer is designed to support 10% to 15% of a gross trailer weight when the trailer is positioned horizontally. Take the gross trailer weight then multiply it by the number of trailer jacks required to support the trailer. 15 to determine the tongue's theoretical weight. Choose a jack with a safety margin with which you are familiar with and that can support that weight.Thus, the "Load Capacity" of a jack refers to the greatest weight it can support.
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10) A 57-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37° above the horizontal. If the tension in the rope is 142 N, how much work is done on the crate to move it 6.1 m?
Answers
F=m*a
T = 142N
Work = Force x distance
distance = 6.1 M
Force = 142 x cos 37 = 113.4 N
W= 113.4N x 6.1M = 691.78 J
Two kids on roller skates standing facing each other. They push off one another and travel in on opposite directions. If the boy has mass of 60 kg and is going 5.6m/s and the girl is going 7.1 what is the mass of the girl?
Answers
Answer: 37.326 kg
Explanation:
KE = 1/2 mv2,
1/2 m1(v1i)2 + 1/2 m2(vi)2 = 1/2 m1(v1f)2 + 1/2 m2 (v2f)
0.5*60*(5.6)^2 = 0/6*x*(7.1)^2
x = 37.3259
help ASAP plsss (help is appreciated and thank you!)
Which is not a result of acid precipitation?
A) it can harm fish and other organisms
B) it can pollute soil, killing trees and other plants
C) it can increase the chance of asthma attacks
D) it can damage buildings and statue made of some types of rocks
Answers
Answer:
C. It can increase the chance of asthma attacks
Explanation:
What does the use of the phrase "the lucky ones"
convey about the author's viewpoint?
What does the phrase "But we never ate enough to
satisfy our hunger" demonstrate about the author?
Answers
Answer:
1. He feels worse off.
2. His awareness of the grim situation.
Explanation:
Elie Weisel's memoir "Night" is about the persecution of the jews by the Germans during the worst genocide in world history. The events leading up to the Holocaust and the resulting after-effects through his personal experience provides one of the most prominent witness accounts of the crime.
When Weisel states that "lying down wasn't an option", he reveals how congested space was in the cabin. The "lucky ones" were able to breathe in the fresh air from the window, while the rest have to be satisfied with wherever they are. This reveals his realization of the grim situation inside the over-packed cabin, where there is hardly any space to move.
And when he said that they "never ate enough to satisfy our hunger", he presents the realization and understanding of the grim situation in the train's cabin where eating is not a luxury, but a necessity to stay alive. And for that, they know they have to "economize, to save for tomorrow" rather than just stay full once.
Answer:
1. He feels worse off.
2. His awareness of the grim situation.
Explanation:
A sample of a gas in a rigid container at 30. 0°c and 2. 00 atm has its temperature increased to 40. 0°c. What will be the new pressure?.
Answers
Answer:
2.066 atm
Explanation:
PV = nRT increase T volume and n and R remain constant
30 C = 303.15 K 40 C = 313.15
P prop to T new P will be 313.15/303.15 * 2 atm = 2.066 atm
Which one of these is NOT equal to linear velocity?a.v2/r b.displacement/time c.2πfrd.ωr
Answers
The linear velocity in terms of the angular velocity is,
\(v=\omega r\)where,
\(\omega\text{ is the angular velocity, r is the radius of the circular motion}\)The angular velocity in terms of the linear frequency is,
\(\omega=2\pi f\)Thus, the linear velocity in terms of linear frequency is,
\(v=2\pi fr\)The linear velocity in terms of the displacement and time is,
\(v=\frac{\text{displacement}}{\text{time}}\)The relation given in the first option is the expression for centripetal acceleration.
\(a_c=\frac{v^2}{r}\)Thus, option a is the correct answer.
In some particle physics theories, the universe must have more than three spatial dimensions, but we experience only three. Why would we not see the other spatial dimensions
Answers
We don't see extra dimensions because they're compactified, limiting our perception to only three observable spatial dimensions.
In certain particle physics theories, the universe has extra dimensions beyond the familiar three.
However, we only experience three spatial dimensions because the additional dimensions are "compactified" or "curled up" on a scale too small to be directly observed.
This compactification keeps the extra dimensions from having significant effects on our daily lives and the macroscopic world.
These theories suggest that only particles or forces at extremely high energy levels or minuscule scales would interact with or reveal the presence of these extra dimensions, making them challenging to detect in everyday experiences.
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Describe 2 potential problems or limitations of ratio
analysis.
Answers
2. Overlooking External Factors: Ratio analysis primarily focuses on internal operations of a company, but there are various external factors like market conditions, industry trends, and economic cycles that can significantly impact a company's performance. These factors might not be reflected directly in the financial ratios, thus potentially leading to an incomplete understanding of the company's overall situation.
Hai vận động viên chạy trên cùng 1 đoạn đường, vận động
viên A chạy với vận tốc 12 m/s vận động viên B chạy với vận tốc 36
km/h. Hỏi vận động viên nào chạy nhanh hơn?
Answers
Answer:
Pemain A
Explanation:
Mengingat data berikut;
Kecepatan pemain A = 12 m/s
Kecepatan pemain B = 36 km/h
Untuk menentukan siapa pelari tercepat di antara dua pemain;
Pertama-tama, kita harus mengubah kecepatan menjadi satuan standar pengukuran yang sama.
Jadi, mari kita gunakan pengukuran umum meter per detik.
Konversi:
36 km/h = (36 * 1000)/(60 * 60)
36 km/h = 36000/3600
36 km/h = 10 m/s
Kecepatan pemain B = 10 m/s
Oleh karena itu, dibandingkan dengan kecepatan pemain A; pemain A lebih cepat.
What is matrix and what is its composition?
Answers
The matrix is the set of extracellular materials that will form a certain tissue. Through this there will be a physiological integration of the cells.
What is matrix and what is it's composition?In the matrix there will be different macromolecules, mainly collagen, enzymes, glycoproteins, among others which will give support to the cells that will be immersed in the matrix. It will also be involved in the process of cell multiplication and cell movement, since it will allow communication between the different cells to coordinate their cell functions.
The extracellular matrix is going to be composed, broadly speaking, of two components: interstitial matrix and the basal membrane. The interstitial matrix is one that will be formed by polysaccharides and fibrous proteins that gives it the characteristic to be able to cushion the compressions to which it may be subjected.
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In a closed system of a cannon and cannonball, which changes would both result in an increase in the kinetic energy of the cannonball when fired from the cannon?
Answers
Answer:
the length of the cannon
the power of the gunpowder
Answer:
i would say B decrease mass of cannon or decrease mass of cannon ball
Explanation:
because when you fire the cannon the cannon ball and powder exit the cannon then that leaves the cannon ball and i would say that the explosion would force it out the cannon but would not increase its mass.
if you walk 8km at an average speed of 4km/h, how much time does it take
Answers
Answer:
2 hours
Explanation:
8km = 4km/h x time
Time = 2 hours
a 210 g apple is falling from a tree what is the impulse that earth exerts on it during the first 0.50
Answers
The impulse that Earth exerts on a 210 g apple that is falling from a tree during the first 0.50 seconds can be calculated using the formula for impulse.
Impulse is defined as the change in momentum of an object, and is given by the equation:
J = Δp
where,
J is the impulse.
Δp is the change in momentum.
To calculate the impulse that Earth exerts on the apple, we need to know the initial momentum and the final momentum of the apple during the first 0.50 seconds.
Since the apple is falling freely, its initial momentum is zero (because it is at rest), and its final momentum can be calculated using the formula:
p = mv
where,
p is the momentum.
m is the mass.
v is the velocity.
Since the apple is falling freely, we can use the equation for free fall to find the velocity:
v = gt
where g is the acceleration due to gravity, and t is the time.
At the end of 0.50 seconds, the velocity of the apple can be calculated as: v = gt = (9.8 m/s²)(0.50 s) = 4.9 m/s.
Therefore, the final momentum of the apple can be calculated as:
p = mv = (0.210 kg)(4.9 m/s) = 1.029 kg m/s.
The change in momentum (Δp) during the first 0.50 seconds is simply the final momentum, since the initial momentum is zero.
Therefore, the impulse that Earth exerts on the apple during the first 0.50 seconds is given by:J = Δp = 1.029 kg m/s
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Which describes Hans Oersted's work with electricity and magnetism?
O He discovered electromagnetic induction after seeing a compass needle deflected by a flowing electric current.
O He discovered
electromagnetism after seeing a compass needle deflected by a flowing electric current.
O He discovered electromagnetic induction after seeing a changing magnetic field generate an electric current.
O He discovered electromagnetism after seeing a changing magnetic field generate an electric current.
Answers
Answer:
Not sure what all the other answerers are on, but the correct answer should be
B. He discovered electromagnetism after seeing a compass needle deflected by a flowing electric current.
Explanation:
peace and carrots
Answer:
The second option is correct. He discovered electromagnetism after seeing a compass needle deflected by a flowing electric current.
Explanation:
Hans Oersted made a remarkable discovery regarding the interaction of electricity and magnetism. He observed a compass needle's deflection caused by an electric current. This experiment in 1820 established a fundamental connection between these two phenomena. The flowing electric current created a magnetic field around a wire, demonstrating the concept of electromagnetism. This groundbreaking finding paved the way for subsequent advancements in physics, such as electromagnetic induction and the formulation of the laws of electromagnetism by James Clerk Maxwell.
\(\hrulefill\)
Breaking down each option:
The first option is incorrect because it pertains to electromagnetic induction, a phenomenon where an electromotive force (EMF) is induced across a conductor in response to a changing magnetic field. This significant discovery was actually made by Michael Faraday.The second option is the correct choice as it accurately states that Hans Oersted discovered electromagnetism through the deflection of a compass needle.The third option is an incorrect option because it suggests that Hans Oersted discovered electromagnetic induction, which is not the case.The fourth option is also incorrect because it incorrectly suggests that there is no change in current while changing the magnetic field. This statement is inaccurate, and it is not attributed to Hans Oersted.The graph shows how the tides changed over the course of a month on Wake Island, which is located west of Hawaii in the Pacific Ocean.
a graph showing the height of high and low tides observed over the course of a month on Wake Island; tides peak around two particular dates that are about two weeks apart
Spring tides occur when the high tide grows very high and the low tide grows very low, creating a large tidal range. Spring tides typically occur twice a month. (The name “spring tides” does not have any relation to the spring season.)
Using the graph, identify two dates within the month that best fit the description of a spring tide, the largest tidal range.
Answers
The two dates within the month that best fit the description of a spring tide, with the largest tidal range, are the peak around the middle of the month and the peak towards the end of the month, both occurring about two weeks apart.
Based on the graph, we can identify two dates within the month that best fit the description of a spring tide, which is when the high tide grows very high and the low tide grows very low, creating a large tidal range.
To determine these dates, we need to look for the peaks of the graph, where the high tides reach their highest point and the low tides reach their lowest point. These peaks represent the times when the tidal range is the largest.
First, let's find the highest point on the graph. From the graph, we can see that there is a peak around the middle of the month, which is about two weeks from the start. This peak represents a spring tide, as the high tide is very high and the low tide is very low, creating a large tidal range.
Next, we need to find the second date that fits the description of a spring tide. Looking at the graph, we can see that there is another peak towards the end of the month, which is also about two weeks apart from the first peak. This peak represents the second spring tide, with a large tidal range.
Spring tides occur twice a month and are characterized by high tides growing very high and low tides growing very low, creating a large tidal range. The name "spring tides" does not have any relation to the spring season.
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What would happen if you didn't have chemical energy in your body? Choose the best answer.
A You wouldn't be able to think.
B You wouldn't be able to move.
C You wouldn't be able to sleep.
D You wouldn't be able to sit.
ill give a thanks
Answers
Answer:B
Explanation:
Because chemical energy fuels your body with energy so without it u wont have enough energy to move.
The seven sciences the study of kinesiology includes are: exercise physiology, exercise anatomy, biomechanics, exercise psychology, exercise sociology, motor learning, and sport pedagogy. Question 3 options:
True False
Answers
Answer:
True
Explanation:
We have that the statement is
True
Kinesiology
Kinesiology is the study of human movement,and functions by inducing other sciences of like exercise psychology , exercise sociology and other science that studies human movement and performance
Therefore
The Statement is True
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Pushing a shopping cart is what type of friction
Parked car is what type of friction
Answers
Hurricanes build over warm ocean water. What else has to be present for a hurricane to form?
Answers
suppose the angle of the mirror relative to the horizontal in figure 16.12 is 0 = 20°. what angle o does the reflected beam make w the horizontal
Answers
Assume the angle of the mirror relative to the horizontal in figure 16.12 is 0 = 20°. The reflected beam forms a 70° angle with the horizontal.
The angle of incidence i equal the angle of reflection (r), which means that:
i = r
We can use this fact to calculate the angle formed by the incident beam and the mirror. This is known as "a" angle.
a = 90° - i
a = 90° - r
Because i = r, we can simplify this to:
a = 90° - i
a = 90° - r
a = 90° - 20°
a = 70°
We can now apply the law of reflection to determine the angle that the reflected beam makes with the horizontal. According to the law of reflection, the angle of incidence equals the angle of reflection, which means:
o = r
Because we already know that the angle of incidence equals a, we can use this to calculate the angle of reflection:
o = r
o = a
o = 70°
As a result, the reflected beam forms a 70° angle with the horizontal.
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Interpret what different shapes of lines represent on a motion graph.
Describe each line
Help me please
