The wavelength, which represents the size of the smallest detectable detail that uses ultraviolet light , is calculated as follows: 3×[tex]10^{8}[/tex] / 1.72×[tex]10^{15}[/tex] or approximately 1.74×[tex]10^{-7}[/tex]m.
The distance between the two positive, two negative, or two minimal points on the waveform is known as the wavelength of the wave. The following formula expresses the relationship between the frequency and wavelength of light:
f = c / λ
where, f = frequency of light
c = speed of light
λ = wavelength of light
Given data = f = 1.72×[tex]10^{15}[/tex]Hz
Therefore, λ = 3×[tex]10^{8}[/tex] / 1.72×[tex]10^{15}[/tex]
λ = 1.74×[tex]10^{-7}[/tex]m
The wavelength, which represents the size of the smallest detectable detail that uses ultraviolet light , is calculated as follows: 3×[tex]10^{8}[/tex] / 1.72×[tex]10^{15}[/tex] or approximately 1.74×[tex]10^{-7}[/tex]m.
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I have provided a picture of the question
Answer:
7.8 x 10^18 electrons
Explanation:
1 Coulomb is 6.24 x10^18 charges multiply this by 1.25 to get the answer above
Homo erectus’s cranial capacity: _________
a) is always less than 1,000 cc.
b) is always more than 800 cc.
c) ranges from 650 cc to 1,200 cc.
d) ranges from 900 cc to 1,200 cc.
Homo erectus’s cranial capacity - ranges from 650 cc to 1,200 cc.
Homo erectus, an extinct species of Pleistocene archaic human, first appeared about 2 million years ago. The earliest known early human with dimensions similar to modern humans, including relatively long legs and small arms compared to the size of the torso, is Homo erectus. An extinct species of hominin that existed between 1.9 million and 135,000 years ago is known as homo Erectus.
The Homo erectus had certain ape-like characteristics, including huge teeth and a hefty jaw. They hunted and ate cooked meat, and they used fire. After closer inspection, it was discovered that the species' teeth showed signs of a diversified diet that included meat intake.
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What is the noon solar zenith angle if you are in san diego (32° north latitude) during the winter solstice (solar declination = 23.5° south latitude)?
The noon solar zenith angle is 55.5°.
How do you calculate the solar zenith angle ?Zenith Angle = latitude where you are at ± subsolar point
If the subsolar point and your latitude are in the same hemisphere, subtract.
If the subsolar point and your latitude are in different hemispheres, add.
In this case you are in north latitude and the winter solstice in south latitude. So according to the formula,
Zenith Angle = latitude where you are at + subsolar point
⇒Zenith Angle = 32°+23.5°
⇒Zenith Angle =55.5°
Hence, the noon solar zenith angle for this case is 55.5°.
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What role does inequality play in a society’s tendency toward rigidity – that is, a tendency to not adapt to mounting problems and pressures?
Social inequality, as defined by sociologists, is the unequal distribution of desirable resources, rewards, and positions in a society.
What is social inequality?
Key to the concept is the notion of social differentiation. People are classified and differentiated based on social features such as differences, identities, and roles, which has an impact on social inequality. Social difference on its own need not imply the segregation of people into classes based on privilege, rank, and power. Social differentiation, however, forms the foundation of social inequality when a social category—such as class, occupation, gender, or race—puts people in a position where they may demand a larger share of resources or services.Learn more about the social inequality with the help of the given link:
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If 6 j of work is needed to stretch a spring from 9 cm to 11 cm and another 10 j is needed to stretch it from 11 cm to 13 cm, what is the natural length (in cm) of the spring?
If 6 j of work is needed to stretch a spring from 9 cm to 11 cm and another 10 j is needed to stretch it from 11 cm to 13 cm, the natural length (in cm) of the spring will be 7cm
The restoring force is a function only of position of the mass or particle, and it is always directed back toward the equilibrium position of the system. The restoring force is often referred to in simple harmonic motion. The force which is responsible to restore original size and shape is called restoring force.
In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, Fs = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.
6 = [tex]\int\limits^ {11-l}_ {9-l}\, kxdx[/tex]
6 = 1/2 k [tex]x^{2}[/tex] lm (9 - l) to (11 - l)
6 = 1/2 k [ [tex](11-l)^{2}[/tex] - [tex](9-l) ^{2}[/tex] ]
12/k = 40 - 4l equation 1
10 = [tex]\int\limits^ {13-l}_ {11-l}\, kxdx[/tex]
10 = 1/2 k [tex]x^{2}[/tex] lm (13 - l) to (11 - l)
20 k = 48 -4l equation2
solving equation 1 and 2 , we get
12/20 = 40 - 4 l / 48 -4 l
l = 7 cm
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A particle moving in a straight line with uniform deceleration has a velocity of 40m/s at point p, 20m/s at point q and comes to rest at point R where QR=50m .Calculate the 1.Distance PQ 2.Time taken to cover PQ 3.Time taken to cover PR
solve for me pls
Answer: 150 metres/5 seconds/5 seconds
Explanation:
Find the acceleration/deceleration
v^2 = u^2 + 2as; v=final velocity u=initial velocity a=acceleration s=distance
0^2 = 20^2 + 2*a*50
a = -4 m/s Therefore, the particle is decelerating at 4 m/s
From there, we can work out PQ
Using the same equation, we get that
20^2 = 40^2 + 2*-4*s
s = 150 m so Distance PQ is 150 metres
Finding the time taken to cover PQ and PR uses a different equation
v = u + at; t = time and everything else is the same
20 = 40 - 4t
t = 5 s so Time taken to cover PQ is 5 seconds
0 = 20 - 4t
t = 5 s so Time taken to cover PR is also 5 seconds
What is the upper limit to the mass of a white dwarf? there is no upper limit. there is an upper limit, but we do not yet know what it is. 1.4 solar masses 1 solar mass 2 solar masses
Answer:
Around [tex]1.4[/tex] solar mass.
Explanation:
In a white dwarf, electron degeneracy prevents the star from collapsing into itself. However, if the mass of the star exceeds the Chandrasekhar Limit, gravity would overcome electron degeneracy and star would collapse further.
The value of the Chandrasekhar Limit is approximately [tex]1.4\; M_{\odot}[/tex] ([tex]1.4[/tex] times the mass of the sun.) While this mass is the maximum possible mass of a stable white dwarf, the original mass of the star that formed this white dwarf tends to be much greater.
Which turbine takes the lesser amount of time to rotate through 1. 0 radian of angular displacement?
Both the turbines take same amount of time to rotate through 1. 0 radian of angular displacement.
Given,
[tex]R_{A}[/tex] = [tex]2R_{B}[/tex]
[tex]V_{A}[/tex] = [tex]2V_{B}[/tex]
As, angular velocity is, ω
So, ω[tex]_{A}[/tex] = [tex]V_{A}[/tex] / [tex]R_{A}[/tex]
ω[tex]_{A}[/tex] = 2[tex]V_{B}[/tex] / 2[tex]R_{B}[/tex]
ω[tex]_{A}[/tex] = [tex]V_{B}[/tex] / [tex]R_{B}[/tex]
also, ω[tex]_{B}[/tex] = [tex]V_{B}[/tex] / [tex]R_{B}[/tex]
And angular displacement is , θ
θ = ω / t
t = θ / ω
[tex]t_{A} = t_{B}[/tex] = [tex]R_{B}[/tex] / [tex]V_{B}[/tex]
Therefore, Both the turbines take same amount of time to rotate through 1. 0 radian of angular displacement.
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A car traveling at a speed of 30. 0 m/s encounters an emergency and comes to a complete stop. how much time will it take for the car to stop if it decelerates at -4. 0 m/s^2?
With the help of the motion equation, it is calculated that if the vehicle slows down at a pace of -4.0 m/s², stopping will take 7.5 seconds.
Motion equation:
Three motion equations commonly referred to as the rules of constant acceleration, exist for a uniform acceleration. In order to derive the components such as displacement(s), velocity(initial =u and final = v), time(t), and acceleration(a), these equations are utilized. They are therefore only applicable in straight-line motion with constant acceleration. Here are the three equations:
v=u+at or, v = u-atv²=u²+2as s= ut+1/2 at²Calculating the time :
The formula for the motion equation is
v = u - at
v = final velocity
u = initial velocity
a = acceleration
t = time
Here, v = 0 ,as the automobile comes to a stop
u = 30 m/s
a = -4 m/s²
So, v = u - at
⇒0 = 30 - 4t
⇒4t = 30
⇒t = 30/4
⇒t = 7.5 seconds
Therefore, the required time calculated is 7.5 seconds.
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The model of a pot of water being heated on a stove shows thermal energy transfer. Which of the following BEST describes how thermal energy is transferred to the water in the pot?
A
Water in the pot is heated by conduction. Thermal energy from the pot is directly transferred to the water at the top of the pot through conduction.
B
Water in the pot is heated by conduction. Thermal energy from the burner is transferred directly to the water at the bottom of the pot through conduction.
C
Water in the pot is heated by convection. Water molecules at the top of the pot warm up and sink while cooler water molecules rise to the top of the pot, creating convection currents.
D
Water in the pot is heated by convection. Water molecules at the bottom of the pot warm up and rise while cooler water molecules sink to the bottom of the pot, creating convection currents.
D. Water in the pot is heated by convection. Water molecules at the bottom of the pot warm up and rise while cooler water molecules sink to the bottom of the pot, creating convection currents.
What is convection current?Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material.
Convection heat transfer takes place only in liquids and gases.
During heat transfer by convection, the heated air will rise to the top due o its lower density while the cooler air will sink to the bottom due to its higher density.
Thus, for the model of a pot of water being heated on a stove that shows thermal energy transfer, the heat transfer occurs when the water in the pot is heated by convection. Water molecules at the bottom of the pot warm up and rise while cooler water molecules sink to the bottom of the pot, creating convection currents.
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Heat is transferred to the water. The water molecules which are in the pot become more active, and the temperature of the water rises.
What is the Kinetic energy?
Kinetic energy is the energy of the objects which is present due to the motion of the object. Kinetic energy is proportional to the mass and velocity of the object. The SI unit of Kinetic energy is Joule (J).
The kinetic energy is possessed due to the motion of the particles. The kinetic energy is directly proportional to the temperature of objects. The kinetic energy of the particles increases with the rise in temperature of object or solution.
In the given situation, the pot of water is placed on the stove. Then, the heat is transferred to the water in pot. The water molecules will move faster with the rise in temperature of the water. The water molecules will have greater amount of kinetic energy due to increase in temperature.
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Static electric fields are caused by charged particles. What characterizes a positively charged particle?
A
The atoms which compose the particle will have more electrons than protons.
B
The atoms which compose the particle will have the same number of electrons as protons.
C
The atoms which compose the particle will have more protons than electrons.
D
By convention, positively charged particles always have all their magnetic dipoles aligned with the north pole.
Static electric fields are caused by charged particles when the atoms which compose the particle will have the same number of electrons as protons.
Each point in space has an electric field associated with it when the charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field.
Both the electromagnetic wave produced by a radio broadcast monopole antenna and the field created in the dielectric of a parallel-plate capacitor are examples of electric fields (which create a time-varying field). Every place in space where a charge, regardless of its shape, is present is said to have an electric field, which is an electric attribute. The electric field's equation is given as E = F / Q.
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Define resistance and describe what would happen to a light bulb if the voltage increased but the resistance stayed the same. (hint: look back in the lesson under the section title ""resistance"")
The light bulb would glow brighter.
What is Resistance?
a force that works against a body's direction of motion and seeks to stop or slow down motion, such as friction. a measure of how much a material prevents an electric current from flowing as a result of a voltage.
What is the law of resistance?
Resistance and Ohm's Law. According to Ohm's law, the resistance of the circuit and the current or energy travelling through the resistance are both exactly proportional to the voltage or potential difference between two places.
The current would grow since it is exactly proportionate to the voltage, increasing the light bulb's brilliance, or simply making it brighter.
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According to dr. berenson's study, when obese children reach adulthood, how many times more likely are they have high-blood pressure?
Dr. Berenson's study showed that when obese children reach adulthood they are 8 times more likely to develop high blood pressure than healthy weight children.
Dr. BerensonDr. Berenson (September 19, 1922 – November 22, 2018) was an American cardiologist, heart researcher, and public health expert who specialised in determining the root causes of cardiac conditions. According to Dr. Berenson's foundational research, childhood routines and habits are the root cause of adult heart disease. He also found that compared to people with no cardiovascular risk factors, those with three or four cardiovascular risk factors had atherosclerosis that was noticeably more evident. Dr. Berenson began teaching at Tulane University after being released from the U.S. Navy in 1948. He started a two-year research fellowship at the University of Chicago in 1952, where Dr. Berenson worked on rheumatic fever investigations with Albert Dorfman, the department's chief.
According to dr. berenson's study, when obese children reach adulthood, how many times more likely are they have high-blood pressure?
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Energy in inductors: you need an inductor that will store 20 j of energy when a 3. 0-a current flows through it. what should be its self-inductance?
The self inductance can be calculated as 4.444 Henry.
The inductor will store energy = 20 joule,
current = 3 ampere.
What is Self inductance?The current carrying conductor which allows or opposes the change of flow of current is known as self-inductance. The rate of change of current can also be given through self inductance.
Formula can be given for the energy in the inductor as,
E = 1 / 2 × L × I² joule.
where as, E - Energy
L - Inductance
I - Current flowing through the coil.
The equation can be rearranged as,
L = 2 E/ I²
= 2 × 20 / 3²
= 40 / 9
Hence, L = 4.4444 Henry
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how to calculate that
Explanation:
Acceleration= 15-3/2
=6m/s²
Answer:
acceleration = [tex]\bf 6 m/s^2[/tex]
Explanation:
We can calculate the acceleration of an object using the following formula:
[tex]\boxed{acceleration = \frac{Resulatant \space\ force}{Mass}}[/tex].
The resultant force is the effective force that is being applied to an object. In this case, there is a 15N force to the right, and a 3N force to the left.
∴ Resultant force = 15N - 3N
= 12N
Now we can use the formula for above formula to calculate acceleration:
[tex]acceleration = \frac{12}{2}[/tex]
= [tex]\bf 6 m/s^2[/tex]
A body accelerate uniformly from rest at 2m/s^2.calculate its velocity after traveling 9m.
Answer:
The final velocity of the body is 6 m/s.
Explanation:
To solve this question, we can use one of the kinematic equations. Let's go over what variables we know and what we are trying to find. We know the acceleration (a = 2m/s²), the displacement (Δx = 9m), and the initial velocity (v1 = 0 m/s). We are trying to find the final velocity, v2.
The equation that uses all of these variables is the following:
v2² = v1² + 2*a*Δx
If we plug in the given values and simplify, we get:
v2² = 2*(2)*(9)
v2² = 36
Finally, we can take the square root of both sides to get:
v2 = 6 m/s
Therefore, the answer is 6 m/s.
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What electronic components are often used to prevent large voltage spikes from being produced when the current flow through an inductor is suddenly terminated?
The electronic components are often used to prevent large voltage spikes from being produced when the current flow through an inductor is suddenly terminated is diode.
Inductive fly back refers to the voltage spike created by an inductor when its power supply is suddenly reduced or removed. This voltage spike occurs because the current flowing through the inductor cannot change instantly. The rate at which the current can change is limited by the inductor's time constant.
Diodes are used to protect circuits by limiting the voltage and to also transform AC into DC. Semiconductors like silicon and germanium are used to make the most of the diodes. Even though they transmit current in a single direction, the way with which they transmit differs. There are different kinds of diodes and each type has its own applications.
Voltage spikes occur when the current flow through an inductor stops and the current decreases exponentially. The electronic device "diode" is used to prevent induced voltage spikes because of the current flow in the forward direction and stops the current in the reverse direction.
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Knowing that the speed of the flywheel is 300 rpm just before a punching operation, determine the speed immediately after the punching operation?
the speed of flywheel is 300 rpm just before a punching operation,then the speed of the flywheel immediately after the punching operation is 299.93 rpm.
The answer of the above question is as follows:
mass of the flywheel of the punching machine (m) is 300 kg .
radius of gyration of the flywheel is :
[tex]k = 600 mm \times \frac{1m}{100mm} = 6m[/tex]
work to be done against each punching by the wheel (W) is 2500J.
initial angular velocity of the flywheel is:
[tex]w = 300rpm \times \frac{ \frac{\pi}{30} \frac{rad}{s} }{1rpm} = 10 \frac{\pi \: rad}{s} [/tex]
therefore the angular speed of the flywheel immediately after punching is given by
w1 =299.93 rpm
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Disclaimer : the given question is incomplete, thus the complete question is as follows:
Question: The flywheel of a punching machine has a mass of 300 kg mass and a radius of gyration of 600 mm. each punching operation requires 2500 J of work.
(a) knowing that the speed of the flywheel is 300 rpm just before a punching,determine the speed immediately after the punching.
What is the date and latitude for the greatest amount of insolation in the southern hemisphere?
The day of the year that has the greatest amount of insolation is June 20 or 21, and December 21 or 22 in the Southern Hemisphere.
Solar radiation that enters the Earth's atmosphere or surface is known as insolation. Only around 52% of this insolation reaches the surface of the earth. The remainder is reflected by the Earth's surface and dispersed by airborne particles, or it is absorbed by water vapor, dust, and clouds.
The portion of Earth south of the equator, a hypothetical horizontal line that circles the planet halfway between its poles, is known as the southern hemisphere. The Northern Hemisphere sees its peak insolation and summer on June 21 as a result of the Earth's continuous motion, with the highest overhead sun now over the Tropic of Cancer (23.5° N).
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Which three steps, placed in the proper order, are required for a nuclear chain reaction?.
There are three basic steps in a nuclear fission chain reaction are Initiation, Propagation, Termination.
What are the three steps of nuclear fission ?1. Initiation
The nuclear fission of [tex]U_{235} ^{92}[/tex] is started by the absorption of a neutron; a single atom must react in order for the chain reaction to begin.
2. Propagation:-
With each stage producing additional product, this component of the process is repeated repeatedly. When [tex]U_{236} ^{92}[/tex] splits apart, neutrons are released, which start the nuclear fission of more uranium atoms.
3. Termination:
The chain will come to an end eventually. Termination might take place if the reactant [tex]U_{235} ^{92}[/tex] is exhausted or if the subsequent neutrons in the chain leave the sample without being absorbed by [tex]U_{235} ^{92}[/tex].
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A mass m is attached to an ideal massless spring with spring constant k. In experiment 1 the mass oscillates with amplitude a, and period t. A student grabs the mass and brings it to rest before starting experiment 2. In experiment 2, the mass is set to oscillate with a larger amplitude of 3a. What is the period of the oscillation in experiment 2?.
The answer is time period of spring mass system does not depend on its amplitude.
Does the oscillation's amplitude affect the period?The period does not depend on the Amplitude. The greater the amplitude, the more the distance to be covered, but it will do so more quickly. The period won't change since the effects of distance and speed cancel each other out. As the amplitude rises, the mass moves farther with each cycle. Therefore, increasing the amplitude has no overall impact on the oscillation's period.
What is oscillation?A kind of energy called sound is created when objects vibrate. For it to spread, a medium is needed. As a result, sound cannot travel through a vacuum because there is nothing for the sound waves to travel through. The object's back and forth movement creates the sound. Sound vibration is the name for this. Additionally called oscillatory motion. Oscillation describes the regular rhythmic back-and-forth movement.
What is amplitude and time period of oscillation?The time required to complete a task is referred to as a period. An occurrence is referred to as periodic if it happens frequently. The period is the length of time it takes for a periodic event to repeat itself. The particle's time period is determined by how long it takes it to complete one vibration cycle.
A sound wave's amplitude measures the height of the wave. When a sound is made, the maximum displacement of the medium's vibrating particles from their mean position determines the amplitude of the sound wave. It is the separation between the wave's crest or trough and its mean location.
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PLEASE ANSWER ASAP!
Lai is trying to listen to a radio station for weather updates during a storm. The storm is causing electrical interference that affects radio waves. She knows that the weather station broadcasts both an analog and a digital radio signal.
Which signal would most likely be clearer during this storm, and how do you know?
(Choice A)
The analog signal because it can always be heard even when interference is high.
(Choice B)
The analog signal because interference can be filtered out of the signal.
(Choice C)
The digital signal because it can always be heard even when interference is high.
(Choice D)
The digital signal because interference can be filtered out of the signal.
The digital signal can always be always be heard even when interference is high. Option D
What is a radio signal?A radio signal makes use of the radio waves. The radio waves are long wavelength electromagnetic waves which are able to travel across a long distance. The signal can be transmitted in both analogue and digital formats.
However, the digital signal seems to be free from certain interferences that are caused by the scattering of the waves across distances. This could diminish the quality of sound that is heard.
Thus, the digital signal can always be always be heard even when interference is high.
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please explain the grandfather paradox
When full, the innermost electron shell of argon contains ________ electrons, and the outermost shell contains ________ electrons.
The innermost electron shell of argon contains 2 electrons, and the outermost shell contains 8 electrons.
To find the answer, we have to know more about the electronic configuration.
What is the electronic configuration of Argon?As we know that, the element Argon in the periodic table has an atomic number of 18.Since its atomic number is 18, it should have 18 number of electrons in the elemental state.The first shell or K shell of Argon can carry 2 electrons, and rest of the 16 electrons will filled in the L and M shells.For, L has a maximum number of 8 electrons, and thus, the rest 8 will move to M.Thus, we can conclude that, the innermost electron shell of argon contains 2 electrons, and the outermost shell contains 8 electrons.
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A yellow train of mass 100 kg is moving at 8 m/s toward an orange train of mass 200 kg traveling in the opposite direction on the same trac at a speed of 1 m/s. They collide and stick together! What is the velocity of
the new combined train?
A. 8 m/s
B. 2 m/s
C. 4 m/s
D. 10 m/s
Answer:
B. 2 m/s
Explanation:
With all collisions, momentum is conserved. This is known as the Conservation of Momentum.
To find the momentum of an object, multiply its mass by its velocity.
[tex]m_yv_y+m_ov_o=(m_y+m_o)v_f[/tex], solving for vf
Plugging in numbers, we get:
[tex]100\cdot 8 + 200(-1)=(100+200)v_f[/tex]
[tex]300v_f=600,\\v_f=\boxed{2\text{ m/s}}[/tex]
When calculating building energy performance, what is included as process energy?
When calculating building energy performance, these are included as process energy:
ElevatorWashing machineDesktop computerWhat is BEPS (Building energy performence standard)?The Sustainable DC plan's energy and climate targets, which call for a 50% reduction in greenhouse gas emissions and energy use by 2032, were achieved in part because to the creation of the BEPS.Ways to improve BEPS
Put insulation first. Your building's exterior envelop should be created to reduce the amount of heating and cooling required.Pick the appropriate ventilation system.Invest in certified equipment.Utilize LED lighting.Upgrade to LEED, if you can.Determine the return on your investment.Learn more about BEPS here:
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What does the inverse square law state?
The Inverse Square Law applies to Radiation. It states that the intensity of any radiation source is inversely proportional to the square of the distance from the source.
I would rather call it “an inverse square law”. Some things vary inversely as the square of something (usually distance) and some things don’t.
For instance, the quantity of light energy per second falling on a tiny area* is inversely related to the square of the distance from the source if a point light source emits light uniformly in all directions. The energy per second will decrease by four times with every twofold increase in distance for a certain area, and nine times with every threefold increase in distance. (Ideally, the area should be a sphere centered on the point source to make the distance clear; nonetheless, an approximate solution is a tiny plane area perpendicular to the line from the point source.) Therefore, light obeys the inverse square law (at least in Euclidean space).
The gravitational and electrical forces are some examples of entities that adhere to the inverse square law. On the other hand, gravitational and electrical potentials adhere to an inverse rule, whereby the potential must be reduced by a factor of two times the distance.
Thank you,
Eddie
The inverse square law states that the intensity or strength of a physical quantity decreases in proportion to the square of the distance from the source.
The inverse square law is expressed as:
Intensity = k / (distance)²
As you walk further from the source, the light from a point source loses intensity as it spreads out across a wider region.
The square of the distance between two objects' centers determines how much gravity there is between them. The gravitational pull between two things lessens as they are pulled apart more.
As you get further from the source of the music, the sound waves become less intense.
Inverse square law governs the strength of the magnetic and electric fields surrounding a charged particle or a wire carrying current.
An important tenet of physics is the inverse square law, which can be used to explain a variety of natural events.
Therefore, the intensity or strength of a physical quantity decreases in proportion to the square of the distance from the source.
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What is the wavelength of a photon that has an energy of j
a. nm
b. nm
c. nm
d. nm
e. nm
The wavelength of a photon that has energy of 1j is 19.878 ×10^-17 nm.
The energy of photon is given by,
E=h × frequency
where h is known as planck's constant whose value is
[tex]6.626 \times {10}^{ - 34} js[/tex]
Frequency : it is the reciprocal of time period . it can be defined as number of Occurance of repeating events per unit time.
f=1/T
si unit is :
[tex] {s}^{ - 1} [/tex]
The formula of frequency is :
f = c/ lambda
where c is the velocity of light whose value is 3×10^8m/s and lambda is the wavelength.
Thus,
[tex]energy = \frac{h.c}{lambda} [/tex]
And,
[tex]wavelength = \frac{h.c}{energy} [/tex]
[tex]lambda = \frac{6.626 \times {10}^{ - 34} js \times 3 \times {10}^{8} \frac{m}{s} }{1j } = 19.878 \times {10}^{ - 26} m[/tex]
Hence the wavelength of photon is 19.878×10^-26 m Or 19.878×10^-17 nm.
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Disclaimer :the data in the question is incomplete that is the options are not correct or incomplete.
Question: what is the wavelength of a photon that has an energy of 1 j.
(a) 19.878×10^-17 nm
(b) 19.878×10^-18nm
(c) 19.878×10^-16nm
(d) 19.878×10^-15nm
(e) 19.878×10^-20nm
Answer:n
Explanation:
Which wavelength of light is the best choice when attempting to quantitatively relate solution absorbance and concentration?.
The optimum wavelength is 450 nm because that is the wavelength of maximum absorbance by FeSCN2+(aq)
you should choose a wavelength with maximum absorbance. In this case, you are using the scattered light, not the absorbed light as your signal. So you should avoid wavelengths where there are absorption peaks.
What is wavelength ?A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in metres (m), centimetres (cm), or millimetres (mm) (mm).
The distance between two waves' crests serves as an illustration of wavelength. When you and another person have the same overall mindset and can easily communicate, that is an example of being on the same wavelength.Learn more about Wavelength here:
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A charged point particle is placed at the center of a spherical gaussian surface. the electric flux is changed if:
The electric flux is changed only if we change the charge.
What is the expression of electric flux?As per gauss law, total electric flux link through a surface is equal to (1/ε0) × charge.Mathematically, electric flux = q/ε0q = total charge enclosed by the gaussian surfaceHere the electric flux is directly proportional to the charge, so on changing charge, the electric flux changes.Thus, we can conclude that the electric flux is changed only if we change the charge.
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