Answers
The intensity of the interference pattern for a double slit decreases with angle. The image demonstrates several fringes, or bright and dark lines, created by light passing through a double slit.
How to solve?In this setup, we have n 2 >n1 and n2 >n3, and the condition for constructive interference is
2L=(m+ 1/2 ) n/2λ
⇒λ= 4Ln 2/2m+1,m=0,1,2,.............
Thus, we get
λ = 4Ln1 = 4 (285 nm )(1.60 ) = 1824 (m = 0)
4Ln2 = 4(285 nm) (1.60 )/3 = 608 nm (m = 1 )
the wavelength in the visible range, we choose m=1 with λ=608 nm.
The refractive index is what.?The measurement of a light beam bends as it travels through different media is called the refractive index. It can be described as the relationship between the speed of a light ray and the speed of a light ray in a vacuum, or n = c/v.
How is light interference calculated?When light of wavelength travels through slits that are evenly spaced apart from one another by a distance of d, constructive interference occurs at angles determined by the formula d sin m, where m = 0, 1, 2,... Here, m = 1, and the problem must be solved for sin before being solved for z.
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Related Questions
Which law of thermodynamics does each of the following scenarios violate (if any)?
A machine that can turn 1000J of heat directly into 1000J of electricity
1.
The first law of thermodynamics
2.
The second law of thermodynamics
3.
The third law of thermodynamics
4.
It is allowed
Answers
Answer: The scenario violates the second law of thermodynamics.
Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.
Question 8 of 10
It takes a person 22 seconds to swim in a straight line from the south end of
a pool to the north end of the pool, a distance of 28 meters. What is the
swimmer's velocity?
A. 1.3 m/s south
B. 1.3 m/s north
C. 0.8 m/s south
D. 0.8 m/s north
Answers
The correct answer is B. 1.3 m/s north
Explanation:
Velocity is a factor that describes how fast or slow the motion of a body occurs and its direction. Moreover, this can be calculated by dividing the total displacement into the time of movement, and the final result is expressed in units such as meters per second followed by the direction, for example, 152 m/s south. The process to calculate the velocity of the swimmer is shown below.
\(v = \frac{d}{t}\)
\(v = \frac{28 meters}{22 seconds}\)
\(v = 1.27 m/s\)
This means the velocity of the swimmer is 1.27 m/s, which can be rounded as 1.3 m/s. Additionally, if the direction is considered it would be 1.3 m/s north because the swimmer went from the south of the pool to its north.
Answer:
the answer is B
Explanation:
confirmed
In a DC generator, the generated emf is directly proportional to the
Answers
In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.
This relationship is described by the equation for the generated emf in a DC generator:
Emf = Φ * N * A * Z / 60
Where:
Emf is the generated electromotive force (in volts),
Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),
N is the number of turns in the armature winding,
A is the effective area of the armature coil (in square meters),
Z is the total number of armature conductors, and
60 is a constant representing the conversion from seconds to minutes.
From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.
The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.
The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.
Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.
By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.
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You measure the pressure of the four tires of your car each to be 35.0 pounds per square inch (psi). You then roll your car forward so that each tire is upon a sheet of paper. You outline the surface area of contact between each tire and the paper, which you later measure to be 32.0 square inches. What is the weight of your car
Answers
Answer:
Weight of car = 36034.88 lb.ft/s²
Explanation:
We are told the pressure of the four tires of your car is; P = 35.0 psi
Also, the surface area of contact is; A = 32 in²
Thus;
Weight of tires = Pressure × Area
W_tires = 35 × 32
Weight_tires = 1120lb.
To get the weight of the car, we will multiply the tire weight by acceleration due to gravity.
It's value in ft/s² is g = 32.174 ft/s²
Thus;
Weight of car = 1120 × 32.174
Weight of car = 36034.88 lb.ft/s²
farah claps his 600times in 60seconds. what is the friquency and periodb
Answers
Answer:
\(\huge\boxed{\sf Frequency = 10\ Hz}\)
\(\huge\boxed{\sf Time\ Period = 0.1\ secs}\)
Explanation:
Given:
No. of times = 600 times
Time = 60 seconds
Required:
Frequency = f = ?
Time Period = T = ?
Solution:
Frequency = No. of Times / TimeFrequency = 600 / 60
Frequency = 10 Hz
Time Period = 1 / FrequencyTime Period = 1 / 10
Time Period = 0.1 secs
What property of a wave remains unchanged when a wave enters a different medium? 5 points amplitude frequency wavelength velocity
Answers
Answer:
frequency
Explanation:
When a wave enters a different medium, the property that remains unchanged is the frequency of the wave.
The frequency of a wave is defined as the number of wave cycles passing a given point per unit time. It represents the rate at which the wave oscillates or repeats its pattern.
The frequency of a wave remains constant when it enters a different medium, regardless of any changes in other properties such as amplitude, wavelength, or velocity.
Therefore, When a wave enters a different medium, the property that remains unchanged is the frequency of the wave.
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What is the index of refraction for a medium where light has a velocity of 2.75 x10³ m/s?0.9176.751.090.250
Answers
n = c/v, where:
n: index of refraction
c: speed of light in a vacuum (3*10^8 m/s)
v: speed of light in medium
n = (3*10^8)/(2.75*10^8)
n = 3/2.75
n = 1.09
demonstrate how souni wave works
Answers
Answer:
Explanation:
Sound waves exist as variations of pressure in a medium such as air. They are created by the vibration of an object, which causes the air surrounding it to vibrate. The vibrating air then causes the human eardrum to vibrate, which the brain interprets as sound.
If light has a wavelength of 480 nm, what is the frequency and color of the light? (Hint: 1 nm = 10^-9 m.)
Answers
Answer:
Blue
Explanation:
The frequency of light can be calculated using the formula:
frequency = speed of light / wavelength
The speed of light is a constant, approximately 3.00 x 10^8 m/s.
Converting the wavelength of light from nanometers (nm) to meters:
480 nm = 480 x 10^-9 m
Now we can calculate the frequency:
frequency = (3.00 x 10^8 m/s) / (480 x 10^-9 m) = 6.25 x 10^14 Hz
The color of light with a wavelength of 480 nm is blue.
Since the wavelength of the light in this question is 480 nm, Blue color falls within the range of the blue color. Therefore, light with a wavelength of 480 nm appears blue to the human eye.
Which of the following was NOT one of Ghana's chief trading exports?
A. Gold
B. Ivory
C. Horses
Answers
answer choices
a- low denisity lipoprotein profile
b- high density lipoprotein profile
c- lipoprotein profile
Answers
Answer:
Option-C (Lipoprotein profile)
Tom has a mass of 50,000 g and runs up a flight of stairs 4 m high in 12.5 seconds.
Calculate Tom’s power. (g = 10 m/s2)
Answers
Answer:
160 watts.
Explanation:
Remark
Power = Work / Time
Work = F * d
Note: Since he is running up stairs he is doing work against gravity.
Givens
m = 50000 g kg / 1000 grmsm = 50000 / 1000 = 50 kgh = 4 mtime = 12.5 secondsg = 10 m/s^2Formula
P = W * d/tW = m*g *d / tSolution
P = 50kg * 10 m/s^2 * 4 m / 12.5 P = 160 watts.
Jamal would like to alter the wavelength of a particular beam of light for an experiment. What would he need to
change to cause this effect?
O
change the temperature surrounding the beam
introduce a material for it to pass through
O
alter the speed the light is traveling
O
increase the force behind the light beam
Answers
The right answer is A). The wavelength of the wave likewise reduces when the frequency of the light wave falls as it moves from a rarer to a denser medium because the frequency of light waves remains constant in all media.
What causes a light beam's wavelength to change?Light is bent as it passes through a different medium because of the speed difference. Light waves are bent at different angles because they are slowed down at varying rates.
How can the wavelength of light be altered during an experiment?If light is initially absorbed by electrons in a substance to elevate their energy level, this can affect the wavelength of the light.
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Question 4 of 10
Which option is part of designing a set of experimental procedures?
O A. Developing a hypothesis
B. Determining how data will be gathered
C. Submitting conclusions to the peer-review process
O D. Beginning to take measurements
Answers
Answer:
Determining how data will be gathered
Explanation:
As a scientist considers the use of a particular set of experimental procedures to carry out his research, an important consideration is the method of data collection.
The experimental procedures chosen must be those that make the process of data collection much easier, efficient and lead to collection of reliable data.
Hence determining the method of data collection is very important when designing a set of experimental procedures.
A 375 N unbalanced force was applied to a 45 kg object at rest. How far would this object travel after 7 seconds?
Answers
Answer:204.2
Explanation:
F = 375 N
M = 45 KG
T = 7 SECONDS
U = 0
S = ?
F = ma
a = F/M
= 8.33m/s
from second equation of motion
s = ut + 1/2at^2
S = 204.166....
A kettle transfers 1000) of energy every 2 seconds. Calculate its power.
Answers
Does bouncing or sticking produce more impulse?
Answers
Answer:
yes
Explanation:
Bouncing is a way to increase impulse. Because an object that bounces changes directions the force of impulse must be absorbed then generated by the target object. (Impulse is nearly doubled.)
Question 6 of 10
Which statement describes one way that nuclear fusion differs from nuclear
fission?
O A. Nuclear fusion occurs spontaneously on Earth.
B. Nuclear fusion is used to power submarines.
O C. Sustained processes of nuclear fusion occur only in stars.
O D. Nuclear fusion is used in power plants to produce electricity.
Answers
Answer:
did you get the answer??
Sustained processes of nuclear fusion occur only in stars. This statement describes one way that nuclear fusion differs from nuclear fission. Hence option C is correct.
When two lighter nuclei are fused together to form heavier nuclei which is called as fusion reaction. It generally involves hydrogen nuclei, In Fusion process two hydrogen nuclei are fused together and helium nucleus is formed, In this process and enormous amount of energy is released. Fusion reaction occurs only in the star like sun. In sun, hydrogen is a fuel which converts into helium that is why we can see that sun is burning.
It is almost impossible to get fusion reaction on the earth, that is why uranium is used in nuclear power plant. In nuclear power plant uranium is converted into two lighter nuclei which is called as fission.
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0.030 km
2. The Olympic record for the marathon is 2hr, 1min, 39s. Determine the average velocity in m/s and
miles per hour of the record.
Answers
0.0041m/s and 0.00917 mile/hr. is the average velocity.
If an object moves with an average speed of v for time t, then the distance traveled by this object is s= v.t
Average speed and time are given in the task. So you can use this formula to calculate the marathon distance.
Velocity or speed is defined as: The rate of change of the object's position in any direction. Velocity is measured as the ratio of distance traveled and time traveled. Velocity is a scalar quantity because it has only direction and not magnitude.
time =2hr, 1min, 39s s= 0.030km
t= 7299s s=30m
v=s/t=30/7299
=0.0041m/s.
in mile per hour = 0.00917 mile/hr
So feom the above equations solved the answer is 0.0041m/s and 0.00917 mile/hr.
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is prey abiotic or biotic?
Answers
E. VI.111 III/S9. An object of mass 4 kg is sliding down a friction lessinclined plane that makes an angle of 40 deg with thehorizontal. Calculate the component of gravitationalforce that pushes the object against the plane in adirection perpendicular to the inclined plane. (1 point)A. O 25.197 NB. 07.507 NC. 30.029 ND. 06.299 NE. 039.2 N
Answers
In an inclided plane the perpendicular component of the weight to the plane is always given by:
\(W\cos\theta\)Plugging the values given in the problem we have:
\((4)(9.8)\cos40=30.029\)Therefore, the perpendicular component of the weight is 30.029 N
if no action is taken to address the issues evaluate whether the impact of light pollution radio interference and space debris on the field of astronomy is lily to worsen lessen or remain the same during the next 50 years
Answers
If no action is taken to address the issues evaluate whether the impact of light pollution radio interference and space debris on the field of astronomy is then a. likely to worsen
Astronomers already have a serious problem with light pollution from cities and other sources, which makes it more challenging to detect dim objects in the night sky. Light pollution is predicted to get worse unless action is taken to stop it as urbanisation grows and more artificial lights are installed.
Astronomical observations can be affected by radio interference from telecommunications, and unless steps are taken to reduce the issue, the issue is only going to become worse as the number of radio-emitting devices rises. In addition, astronomers' instruments and spacecraft are increasingly in danger from space debris. The probability of collisions and other accidents is anticipated to rise as the amount of trash in space continues to rise.
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Complete Question:
If no action is taken to address the issues evaluate whether the impact of light pollution radio interference and space debris on the field of astronomy is then -
a. likely to worsen
b. lessen or remain the same during the next 50 years
Is a compound considered a pure substance?
Answers
Answer:
It depends on which compound you use carbon dioxide can be while helium will not but if you where to sum it up it would be use because simply most compounds are considered pure substance.
Explanation:
Looking at the position of the house and the tree, if the man ran starting from the house going
to
the tree in 8 seconds, the average velocity would be?
Answers
Average velocity of man is 2 m/s
Given that;
Distance between tree and house = 16 m
Time taken = 8 seconds
Find:
Average velocity
Computation:
Average velocity = Total distance cover / Time taken
Average velocity = Distance between tree and house / Time taken
Average velocity = 16 / 8
Average velocity = 2 m/s
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A physical science student is building a battery with two metal plates. The table below shows a list of
metals and their electron affinity given in electron volts, eV.
Metal Electron Affinity (electron volts, eV)
Calcium - 2.87
Zinc
-0.76
Lead -0.13
Copper +0.34
The student has a copper plate. When paired with copper, which metal plate will produce a higher
voltage?
O Calcium
OZinc
O Lead
O Copper
Answers
When paired with copper, the metal plate that will produce a higher voltage is a) Calcium.
The voltage produced in a battery is related to the difference in electron affinity between the two metals used as electrodes. A greater difference in electron affinity results in a higher voltage.
In this case, the electron affinity of copper is +0.34 eV. Among the given options, calcium has the highest electron affinity with -2.87 eV. The difference between the electron affinities of copper and calcium is the greatest among the options, indicating a larger potential difference and thus a higher voltage when paired together.
Therefore, when paired with copper, the calcium plate will produce a higher voltage compared to zinc, lead, or another copper plate. Therefore, Option a is correct.
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The question was incomplete. find the full content below:
A physical science student is building a battery with two metal plates. The table below shows a list of
metals and their electron affinity given in electron volts, eV.
Metal Electron Affinity (electron volts, eV)
Calcium - 2.87
Zinc
-0.76
Lead -0.13
Copper +0.34
The student has a copper plate. When paired with copper, which metal plate will produce a higher
voltage?
A. Calcium
B. Zinc
C. Lead
D. Copper
Which element has 3 energy levels and 8 valence electrons
Answers
Answer:
argon
Explanation:
argon has 18 protons and 18 electrons there are 2
electrons on the first energy level,8 electrons on the second enery level and 8 on the third
how much energy is stored in a 5.0-h inductor carrying 35 a?
Answers
The energy stored in a 5.0 henry inductor carrying 35 A is 3062.5 Joule.
What is inductance?An electrical conductor's tendency to resist a change in the flow of current through it is known as inductance. The SI unit for inductance is Henry, and L is used to denote it.
Inductance of the inductor is: L = 5.0 Henry.
Current flowing through it is: I = 35 ampere.
Hence, the energy stored in it = 1/2 × L × I²
= 1/2 × 5.0 × 35² Joule
= 3062.5 Joule.
So, the energy stored in the inductor is 3062.5 Joule.
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2. A person with a mass of 50 kg is driving her car at a velocity of 15m / s . The car is involved in a small collision, and the airbag is deployed. The airbag provides a stopping force of 1200 N. The person's final velocity is 0m / s . How long does it take for the person to be stopped by the airbag ?
Answers
Answer:
It takes approximately 0.625 seconds for the person to be stopped by the airbag.
Explanation:
We can use the formula for average acceleration to solve this problem:
a = (v_f - v_i) / t
where:
a = average acceleration
v_f = final velocity (0 m/s)
v_i = initial velocity (15 m/s)
t = time
We know that the airbag provides a stopping force of 1200 N, which is equal to the net force on the person-car system. We can use Newton's second law of motion to find the acceleration of the person:
F_net = ma
where:
F_net = net force (1200 N)
m = mass of person (50 kg)
a = acceleration
Solving for a, we get:
a = F_net / m
a = 1200 N / 50 kg
a = 24 m/s^2
Now we can substitute the values of a, v_f, and v_i into the formula for average acceleration and solve for t:
a = (v_f - v_i) / t
24 m/s^2 = (0 m/s - 15 m/s) / t
t = -15 m/s / 24 m/s^2
t = 0.625 s
Therefore, it takes approximately 0.625 seconds for the person to be stopped by the airbag.
a. Fill in the blanks in the following paragraph to correctly identify four principles of the
second law of thermodynamics.
Heat naturally flows from an object that has a _____ temperature to an object that has a ____ temperature. Heat can be made to flow in the reverse direction if ____ is done. A machine can never have an efficiency of ____. This means that heat energy can never be fully converted into ____ energy.
Answers
Answer:
higher, lower, work, 100%, mechanical
Construct a ray diagram to determine the image.
A thin lens is located centered over a 14 cm ruler at the 7 cm mark. A black dot is located at 5.5 cm on the left side of the lens and at 8.5 cm on the right side of the lens. An arrow is located at the 3.0 cm mark.
Where is the image located?
At 8.3 cm on the ruler
At 9.4 cm on the ruler
At 10.7 cm on the ruler
At 11.5 cm on the ruler
Answers
The distance of the image formed by the lens is at 10.7 cm on the ruler.
option C.
What is the location of the image?The distance of the image is calculated by applying lens formula as shown below;
1/f = -1/u + 1/v'
where;
f is the focal length of the lens v is the image distance u is the object distanceFrom the diagram, the focal length of the lens = 8.5 cm
the object distance = 3 cm
The image distance is calculated as follows;
1/v' = 1/f + 1/u
1/v' = 1/8.5 + 1/3
1/v' = 0.45
v' = 1/0.45
v' = 2.21 cm
The position of the image on the rule is calculated as follows;
v = v' + 8.5 cm
v = 2.21 cm + 8.5 cm
v = 10.71 cm
Thus, the ray - diagram shows the position or distance of the image formed.
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