1. What type of interference is happening when intersecting light waves subtract from each other to create dark spots? Which letter on the diagram shows this phenomenon?
2. If light were made of a stream of particles, how would it behave when it passes through a slit or a keyhole? (1 point)
3. List three behaviors of light that support the theory that light travels in waves. Then describe and/or draw each behavior. (3 points)
4.What are the characteristics of a blackbody radiator? Give an example. (2 points)
Answers
Answer:
1. The type of interference happening when intersecting light waves subtract from each other to create dark spots is known as destructive interference
Destructive interference happens when the positive displacement or crest of one wave is cancelled by the negative displacement, or through of another wave of the same frequency resulting in a wave with lower amplitude
The letter on the diagram that shows destructive interference is the letter "c"
2. When particles pass translate through a key hole, they do not interfere with each. Therefore, when light is considered as a stream of particles, when it passes through a keyhole, there will be no interference, and the light will particles will not interact with other light particles such that the pattern formed on on a wall on the other where the particles impinge on will be the shape of the single slit or keyhole
3. Three behaviors of light that support the theory that light travels in waves includes;
a) Refraction
b) Interference
c) Diffraction
Refraction
Refraction describes the change in velocity of light when it travels from one medium to another of different density, in which the light changes its speed
Interference
Interference is the superposition of two or more waves with the addition of the wave displacements resulting in a wave of larger or lesser amplitude than each of the individual waves
Diffraction
Diffraction is defined as the tendency of light to bend or spread when it goes past an object placed in its path by passing around the objects edge
4. The properties of a blackbody radiator includes;
1) A blackbody radiator absorbs all electromagnetic radiation incident on it
2) A blackbody radiator is capable of emitting black-body radiation
3) The peak of the emitted radiation depends on the blackbody temperature
4) The length of the wavelength of the peak radiation is inversely proportional to the temperature of the blackbody
5) The blackbody has zero coefficient of reflection or transmission and therefore, it does not reflect incident heat or light which makes it black
An example of a blackbody radiator is a burglar alarm that flashes light when there is an incident but cannot be ordinarily seen because of its dark color which is meant to absorb all incoming light
Explanation:
Wave interference is the phenomenon which describes the effect of the coming together or superposition of two or more waves to result in a wave displacement at a given point that is either reinforced (larger), cancelled (lower) amplitudes or the waves may have their original amplitudes when there is no interference
The wave displacement for the waves coming from the same source are taken as vectors from which the combination is calculated by using vector addition.
Answer:
The type of interference happening when intersecting light waves subtract from each other to create dark spots is called destructive interference. The letter "C" on the diagram shows this phenomenon.
If light were made of a stream of particles, it would behave by traveling in straight lines when passing through a slit or a keyhole. The particles would not spread out or bend around the edges like waves do.
Three behaviors of light that support the theory that light travels in waves are:
Reflection: Light bounces off a surface, like a mirror, following the law of reflection.
Refraction: Light bends when it passes through different mediums, like water or glass.
Diffraction: Light waves spread out and bend around obstacles, like when it passes through a narrow slit.
Characteristics of a blackbody radiator include:
It absorbs all wavelengths of light that fall on it.
It emits radiation at all wavelengths according to its temperature.
An example of a blackbody radiator is a heated metal object that glows when it reaches high temperatures, such as a red-hot iron rod.
Related Questions
TB 70 states that to determine acceleration 1 or 2 things must change. What must change for acceleration to occur?
Answers
Answer:
Revise
Test
1
2
3
4
5
6
7
Newton’s Second Law
Unbalanced forces
When the forces acting on an object do not balance, the resultant force will cause the object to accelerate in the direction of the resultant force.
In other words, a resultant force on a body will cause it to change its velocity. This simply means that unbalanced forces will cause:
acceleration
deceleration
change in direction
Explanation:
Fish have gills that-
A. Help regulate body temperature
B. Take in oxygen needed for survival
C. Help maintain balance in the water column
D. Obtain carbon dioxide from water for survival
Answers
Answer:
B) Take in oxygen needed for survival
Explanation:
Even though fish can live their lives underwater, they still need oxygen to “breathe”
Tonya is riding a motorcycle that goes from 30 m/s to 75 m/s in 5s. She is heading south to Florida. What is her acceleration?
Answers
Vf = 75m/s
Vi = 30m/s
Then acceleration = 75-30/5
= 9m/s.
Explain the term the refractive index of glass is 1.5
Answers
Answer:
Refractive index of a glass is 1.5 means that the speed of light travels 1.5 times SLOWER in that glass than in a vacuum.
Explanation:
Refractive index is defined as a ratio between the speed of light in a vacuum and the speed of light in a medium. Since the refractive index is a ratio between two speeds it is a dimensionless number. For the glass, having a refractive index of 1.5, means that the speed of light travels 1.5 times SLOWER in that glass than in a vacuum.
a stone of 1kg is thrown with a velocity of 20m/s and comes to rest after travelling a distance of 50 m. calculate the force exerted on the object.
Answers
Answer:
Force = -4N
Explanation:
Given the following data;
Mass = 1kg
Initial Velocity = 20m/s
Distance = 50m
To find the acceleration;
We would use the third equation of motion;
Since, it comes to rest, its final velocity is zero (0).
V² = U² + 2as
Substituting into the equation, we have;
0 = 20² + 2*a*50
-400 = 100a
a = -400/100
a = -4m/s²
Now to find the force exerted
Force = mass* acceleration
Force = 1*(-4)
Force = -4N
Complete the sentence with the word "element" or "compound."
O is a(n) ____
and H2O2 is a(n) ____
.
Answers
Answer:
"element"= There are four basic sentence patterns based on sentence construction element
Answer:
1st one. Element
2nd one. Compound
Explanation:
Please Help Me!!!!!!
Answers
Answer:
a.
Explanation:
A mixture of 5 cm3 of CH4 and 100 cm3 of air is exploded. Assume air is 80% N2 by volume and 20% O2 by volume. The resulting mixture is cooled. All volumes are measured at room temperature and pressure.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)
What is the composition of the resulting gas?
Answers
Answer:
The composition of the resulting gas;
A. 5 cm³ of CO₂, 10 cm³ of O₂, 80 cm³ of N₂, and 10 cm³
Explanation:
The given parameters are;
The volume of CH₄ in the mixture of air and methane = 5 cm³
The volume of air in the mixture of air and methane = 100 cm³
The percentage by volume of nitrogen, N₂ in the air = 80%
The percentage by volume of oxygen, O₂ in the air = 20%
The equation for the reaction of the chemical reaction between the methane and the air in the mixture is given as follows;
CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l)
Therefore, we have;
1 mole of CH₄ reacts with 2 moles of O₂ to produce 1 mole of CO₂ and 2 moles of H₂O
By Avogadro's law, we have that equal volumes of all gases at the same temperature and pressure contains equal number of molecules
Therefore, we have;
1 cm₃ of CH₄ reacts with 2 cm³ of O₂ to produce 1 cm³ of CO₂ and 2 cm³ of H₂O
From which we have;
5 cm₃ of CH₄ reacts with 10 cm³ of O₂ to produce 5 cm³ of CO₂ and 10 cm³ of H₂O (steam)
The volume of the oxygen used in the reaction = 10 cm³
The volume of oxygen present in the air = 20% × 100 cm³ = 20 cm³
The volume of nitrogen present in the air = 80% × 100 cm³ = 80 cm³
Therefore, the composition of the resulting gas is given as follows;
1) 80 cm³ Nitrogen
2) 10 cm³ Oxygen
3) 5 cm³ CO₂
4) 10 cm³ H₂O
The final composition of all the gases in the mixture has been [tex]\rm 80\;cm^3[/tex] Nitrogen, [tex]\rm 10\;cm^3[/tex] oxygen, [tex]\rm 5\;cm^3[/tex] carbon dioxide, and [tex]\rm 10\;cm^3[/tex] water (steam). Thus, the correct option is A.
The mixture of air has been composed of 20 % oxygen and 80 % nitrogen. The volume of air has been [tex]\rm 100\;cm^3[/tex]. Thus, the volume of oxygen and nitrogen in the air has been:
The volume of oxygen, [tex]V_O_2=20\;\rm cm^3[/tex]
The volume of nitrogen, [tex]V_N_2=80\;\rm cm^3[/tex]
Since the reaction, the nitrogen has been remained unused, thus the final composition of nitrogen has been [tex]\rm 80 \;cm^3[/tex].
The balanced equation for the reaction of methane with oxygen has been:
[tex]\rm CH_4\;+\;2\;O_2\;\rightarrow\;CO_2\;+\;2\;H_2O[/tex]
According to Avogadro's law, the presence of gases at the same temperature has volume proportional to the moles of the gases.
Thus, from the balanced chemical equation:
[tex]\rm 1\;cm^3\;CH_4=2\;cm^3\;O_2[/tex]
Thus,
[tex]\rm 5\;cm^3\;CH_4=10\;cm^3\;O_2[/tex]
Since the available oxygen has been [tex]\rm 20\;cm^3[/tex], the remaining oxygen after the reaction has been [tex]\rm 10\;cm^3[/tex].
Thus, the final composition of oxygen has been [tex]\rm 10\;cm^3[/tex].
Methane has been the limiting reactant. Thus, the concentration of carbon dioxide and water formed has been:
[tex]\rm 1\;cm^3\;CH_4=1\;cm^3\;CO_2\\5\;cm^3\;CH_4=5\;cm^3\;CO_2[/tex]
The final composition of carbon dioxide has been [tex]\rm 5\;cm^3[/tex].
[tex]\rm 1\;cm^3\;CH_4=2\;cm^3\;H_2O\\5\;cm^3\;CH_4=10\;cm^3\;H_2O[/tex]
The final composition of water (steam) has been [tex]\rm 10\;cm^3[/tex].
The final composition of all the gases in the mixture has been [tex]\rm 80\;cm^3[/tex] Nitrogen, [tex]\rm 10\;cm^3[/tex] oxygen, [tex]\rm 5\;cm^3[/tex] carbon dioxide, and [tex]\rm 10\;cm^3[/tex] water (steam). Thus, the correct option is A.
For more information about the composition of gas, refer to the link:
https://brainly.com/question/4391235
When an unbalanced force acts on an object
Answers
Answer:
What is the question?
Explanation:
I can help you but if you ask!
Which of the following concepts helps explain the modern technology used in 3D films?
a. retinal disparity
b. convergence
c. overlap (interposition)
d. stroboscopic movement
Answers
Answer:
a.
Explanation:
What is a positive component of Heath called:
Answers
Answer:
vegetables food, sport sport sport
Explanation:
????!!!!
How far would a car traveling at a speed of 35 miles per hour if it traveled for 3 hours?
Answers
Answer:
105
Explanation:
Simple math, 35x3=105.
Answer:
105
Explanation:
multiply your time by speed to get distance
what are metalloids?
Answers
Answer:
a type of chemical element whose properties are intermediate between those of metals and nonmetals.
Find an everyday situation that involves density or buoyancy and explain it.
Answers
Answer:
Explanation:
Swimming. When you go swimming, your body floats but somewhat sinks as well because we weigh less when we're in the water. We are less dense.
Or taking a bath, the soap sinks to the bottom and the washcloth somewhat floats and sinks because of the air trapped in the middle. But the rest of the washcloth is sinking because it's absorbed the water which makes it denser.
Brainliest??
References
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sign
Mailings
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Acceleration Due to Gravity - Free Fall
V=V;+gt
vir initial velocity (m/s)
=final velocity (m/s)
g=gravity (10 m/s2)
t = time (s)
1. What is the velocity of a dropped object after it has fallen
downward for 3.0s?
V=V;+gt
Vi = 0
8 = 10
t = 3
2. A brick is thrown down off a bridge with a velocity of 5 m/s. What
is its velocity after it has fallen for 2 seconds?
I
3. An arrow is launched straight up from the ground. It reaches its
highest point in 6 s. What velocity was it released at?
Answers
a b c d
A V=V+gt
dhehehdhehdhshehehehehehe
I need help!!! What is the answer!!
Answers
Answer:
A I think hope it helps!!
Why is training important?
Answers
Please I need help with this question (see image).
Show workings where necessary.
Answers
Answer:
I think the reason why ice is forming on the aluminium lumps and not the beaker, is because:
The beaker is already on the same temperature as the mixture inside it: as a result, there is no heat transfer.
on the other hand, the Aluminium Lumps is at a way lower temperature than the mixture and as a result, there is heat transfer from the water around the lumps to the aluminium Lumps itself.
turning the water into ice.
Heat is lost from the water, and gained on the aluminium.
Since the water was turned to ice.
we can say that the final temperature of the heat transfer process is 0°C.
Notice that we'll be making use of the latent heat of fusion for ice. since water is being converted to ice at 0°C.( workout is in above attachment)
A student rides a bicycle for 15 miles in 3 hours. What is the student's speed? What else would you need to know for Velocity?
Answers
Answer:
5 miles per hr.
Explanation:
15/3=5 miles 3/3=1 hour
not too sure about velocity bruddah.
Answer:
11 minutes 60 seconds per mile
7 minutes 27.39 seconds per kilometer
5 miles/hour
8.05 kilometers/hour
134.11 meters/minute
2.24 meters/second
Explanation:
5 miles per hour :)
Most energy obtained from water is converted from _____.
groundwater
tidal generators
waterfalls
potential energy behind dams
Answers
Answer: potential energy behind dams
Explanation:
groundwater, tidal generators, and waterfalls don't produce enough kinetic energy.
I need help with this
Answers
Answer:
position 1 and 4................
approaching a dangerous intersection the driver slows her car from 40 meters per second to 15 meters per second in 5 seconds what is the acceleration
Answers
Answer:
- 5 m/s^2
Explanation:
Givens
vi = 40 m/s
vf = 15 m/s
t = 5 seconds
Formula
a = (vf - vi)/t
a = (15 - 40)/5
a = -25/5
a = - 5 m/s^2
Don't be bothered by the minus sign. It just means she is slowing down.
Describe how you would draw a diagram that shows the electric field between two particles that
attract each other.
Answers
Answer:
draw the two atomic structures and then focus in on the electrons either gaining or losing and draw them with arrows and dots
Explanation:
i got a 5/5
20 characters
Select the community facility which typically has a variety of offerings for physical activity like team sports, exercise classes, and swimming.
Bowling Alley
Golf Course
Skate Park
YMCA
Answers
Answer:
YMCA
Explanation:
i know everything ;)
Answer: It should be YMCA if im not wrong i took the test a while back.:)
Explanation:
What is a 60 kg car's velocity if it has a momentum of 2400 kg m/s?
Answers
Answer:
40m/s
Explanation:
momentum = mass * velocity
momentum / mass = velocity
2400kg*m/s / 60kg = 40m/s
A 1,100 kg car comes uniformly to a stop. If the vehicle is accelerating at 1.2 m/s", which
force is closest to the net force acting on the vehicle?
Answers
Answer:
Gravitaitional pull
Explanation:
Guessing
Which has more kinetic energy, a basketball rolling at a walking pace or a baseball rolling at the pace of someone running? How could we find out ?
Answers
Answer:
answer 2 because the baseball has less mass then the 1st one
A person is observing the oscillations of a wave. If the wave source begins to move away from the person, what will the person notice?
Answers
Answer:
Explanation:
C
3. A 900 kg car has a velocity of 22.0 m/s.
a. Find the momentum (p) of the car.
Given:
m=
V=
Unknown:
P=
Solution:
p = mv
(IT IS NOT A Multiple choice question)
Answers
Answer:
19800kgm/s
Explanation:
Given parameters:
Mass of car = 900kg
Velocity = 22m/s
Unknown:
Momentum of the car = ?
Solution:
The momentum of a body is the quantity of motion it possess.
So;
Momentum = mass x velocity
So;
Momentum = 900 x 22 = 19800kgm/s
A 100w lightbulb is on for 30 seconds. How much energy was transferred?
Answers
6000 joule energy
So I assume 30 seconds would be
3000 joule energy