Using the Kohler curves estimate the following: (a) the radius of the droplet that will form on a sodium chloride particle of mass 10^-18 kg in air that is 0. 1% supersaturated; (b) the relative humidity of the air adjacent to a droplet of radius 0. 4 microns that contains 10^-19 kg of dissolved ammonium sulfate; (c) the critical supersaturation required for an ammonium sulfate particle of mass 10^-19 kg to grow beyond the haze state
Answers
By using the Kohler curves is 4×\(10^{-5} cm\). If Rh is not shown in the graph therefore the sensitivity is near 1.00 S Rh is 88%. That is 0.0055 means 0.55%.
Kohler curves, also known as Kohler plots, are a graphical representation of the magnetoresistance of a material as a function of the magnetic field strength. They were first introduced by Walter Kohler in 1934 to describe the behavior of ferromagnetic materials. Kohler curves are useful in the study of magnetic materials and have applications in the development of magnetic sensors and memory devices.
Kohler curves plot the ratio of the resistance of a material at a given magnetic field strength to its resistance in the absence of a magnetic field, versus the square of the magnetization of the material. The resulting curve can be used to determine the degree of spin polarization in the material, which is a measure of the alignment of electron spins in the material with the magnetic field.
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Complete Question:
Using the Kohler curves estimate the following: (a) the radius of the droplet that will form on a sodium chloride particle of mass 10^-18 kg in air that is 0. 1% supersaturated; (b) the relative humidity of the air adjacent to a droplet of radius 0. 4 microns that contains 10^-19 kg of dissolved ammonium sulfate; (c) the critical supersaturation required for an ammonium sulfate particle of mass 10^-19 kg to grow beyond the haze state
Related Questions
In your opinion, Is the big bang theory a valid explanation for the beginning of time?
If so, what areas of research do you think has the greatest possibly for more discovery?
If not, what problems in the theory leads you to reject it? What might be an alternate theory?
(please give me a good long well thought out answer)
Answers
Answer:
I believe that the Big Bang Theory is a valid explanation for the beginning of time. Areas of research that have the greatest potential for more discovery include dark matter and dark energy, the nature of the inflationary period, and the origin of the matter-antimatter asymmetry.
Problems with the Big Bang Theory that lead me to reject it include the lack of a satisfactory explanation for the origin of the initial conditions of the universe, the lack of a satisfactory explanation for the origin of the matter-antimatter asymmetry, and the lack of a satisfactory explanation for the origin of the inflationary period. An alternate theory could be the Cyclic Universe Theory, which proposes that the universe goes through an infinite cycle of expansion and contraction.
A bullet travelling horizontally with speed of 30m/s strike a wooden plank normal it surface, passing through it with a speed of 10m/s. Find the time taken by the the bullet to pass through the wooden plank of 5cm thickness
Answers
The bullet takes 0.0025 seconds to pass through the wooden plank of 5 cm thickness when it is traveling horizontally with an initial speed of 30 m/s and a final speed of 10 m/s.
The time taken by the bullet to pass through the wooden plank can be determined using the equation of motion for constant acceleration.
Given:
Initial speed (u) = 30 m/s
Final speed (v) = 10 m/s
Distance (s) = 5 cm = 0.05 m
To find the time taken (t), we need to calculate the acceleration (a) first. We can use the equation:
v² = u² + 2as
Rearranging the equation, we have:
a = (v² - u²) / (2s)
Substituting the given values:
a = (10² - 30²) / (2 * 0.05)
Simplifying the expression:
a = (-800) / (0.1)
a = -8000 m/s²
The negative sign indicates that the acceleration is in the opposite direction of the initial velocity.
Next, we can use the equation of motion:
v = u + at
Substituting the values:
10 = 30 + (-8000) * t
Simplifying the equation:
-8000t = -20
Dividing by -8000:
t = 20 / 8000
t = 0.0025 s
Therefore, the time taken by the bullet to pass through the wooden plank of 5 cm thickness is 0.0025 seconds.
To find the time taken by the bullet to pass through the wooden plank, we need to calculate the acceleration first using the equation of motion.
By rearranging the equation and substituting the given values, we can find the acceleration.
Then, using the equation of motion again, we can solve for time.
The negative sign in the acceleration indicates that it is in the opposite direction of the initial velocity.
The resulting time is 0.0025 seconds.
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A soccer player strikes a soccer ball with a force of 550 N. If the player and the ball remain in contact for 0.03 s. What impulse was delivered to the ball by the player?
Answers
Impulse (J) is equal to the change in momentum of the ball. It is also equal to Force times Time:
J = Ft
J = (550 N)(0.03 s)
J = 16.5 Ns
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Why is it important to regulate temperatures in mammals
Answers
Answer:
If the body temperature falls below this temperature then enzymes will work too slowly for body process to occur fast enough the keep the mammal alive.
Explanation:
a piece of thrown pottery is created using this potter’s tool
Answers
The potter's tool used to create a piece of thrown pottery is the potter's wheel.
In pottery making, a variety of tools are used to shape and create pottery. One of the most important tools is the potter's wheel. The potter's wheel is a rotating platform that allows the potter to shape the clay into various forms. It consists of a circular disc that spins on a central axis. The potter places a lump of clay on the wheel and uses their hands to shape it as it spins.
The potter's wheel provides a stable and controlled surface for the potter to work on. It allows them to easily shape the clay and create symmetrical forms. By applying pressure and manipulating the clay with their hands, the potter can create bowls, vases, plates, and other pottery pieces.
Other tools used in pottery making include the potter's kiln, which is used to fire the pottery and harden it. The kiln reaches high temperatures, causing the clay to undergo chemical changes and become durable. Additionally, potters use various hand tools such as clay modeling tools, carving tools, and brushes to add details and texture to the pottery.
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Discovering outer space had been an ancient goal of humanity. The first rocket launched ever was by the
American college professor and scientist Robert Goddard who built and flew the world's first liquid propellant
rocket on March 16, 1926. Its flight, though unimpressive (it climbed only 12.5 meters), was the forerunner of
the Saturn V Moon rocket 43 years later. Answer the following question using your math and science skills.
While launching a rocket into space, the rocket thrust (force) is calculated to be 20,000 N.
OOD
a) The mass of the rocket is approximately 3,000 kg, what would be the acceleration of the launched rocket?
b) The rocket starts from rest, what would be the final speed after 5 min?
Answers
The earliest known observations of the night sky date back to ancient civilizations such as the Babylonians, Egyptians, and Chinese, who recorded the positions of stars, planets, and other celestial bodies.
Explain about goal of humanity:Discovering outer space has been a goal of humanity for centuries. Throughout history, people have looked to the stars with a sense of wonder and curiosity, trying to understand the nature of the universe. a) To calculate the acceleration of the launched rocket, you can use the formula:However, it wasn't until the 20th century that humans were able to physically explore space. With the development of rocket technology, scientists were able to launch spacecrafts beyond Earth's atmosphere, allowing for the study of celestial bodies and the exploration of the Solar System and beyond.a = F / m
where F is the force (thrust) acting on the rocket and m is the mass of the rocket.
In this case, F = 20,000 N and m = 3,000 kg
So, a = 20,000 N / 3,000 kg = 6.67 m/s²
b) To calculate the final speed of the rocket after 5 minutes, you can use the formula:
v = a * t
where v is the final speed, a is the acceleration and t is the time.
In this case, a = 6.67 m/s² and t = 5 minutes = 300 seconds.
So, v = 6.67 m/s² * 300 seconds = 2,001 m/s
It's worth noting that the acceleration and final speed calculations are assuming that the rocket thrust is constant during the entire flight, which is not the case in reality, thrust changes during different stages of the rocket's flight.To learn more about goal of humanity refer to:
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Relative density is known as ----------.A. gravity densityB. specific gravityC. weight
Answers
The relative density of the substance is equal to the density of the substance concerning the density of the reference substance.
The relative density of the substance is known as the specific gravity.
Hence, option B is the correct answer.
Two identical waves are destructively interfere. What will happen to the resulting wave?
There will be no wave. ,
It will be half as large as each original wave.
The two waves will pass through each other without problem. ,
It will be twice as large as each original wave.
Answers
Answer:
Because the disturbances are in opposite directions for this superposition, the resulting amplitude is zero for pure destructive interference
Explanation:
why do you think your "air-hole" is the same as your "food-hole"?
Answers
That hole provides three main roles: 1 for living two for speaking, and a third for swallowing. It fulfils three roles. When he swallows, his lip closes the hole of the palate in the rear his his mouth, settling the fleshly valves in the top part of the throat.
Is there a breath opening or a food hole?The throat serves as where those pathways of air and nutrients meet. When one breathes in through the nose or word, the air that comes in always goes through the pharynx. As you might expect, swallowing is a vital element of survival; it allows us to eat and drink.
Do air and meals go through a comparable hole?Our breathing tube, our windpipe or the trachea is not separate from what we use to swallow, the stomach. Air, food, and fluids all travel together down the throat till the windpipe splits apart, exactly around the apple of Adam. Normally, the epiglottis prevents food and water from passing down the windpipe.
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Which method does not demagnetise a bar magnet? A Heat the bar magnet and place it in the east-west direction to cool. B Place the bar magnet in the east-west direction and hammer it. C Place the bar magnet in a coil connected to an a.c. supply and slowly withdraw it. o Place the bar magnet in a coil connected to a dc. supply and slowly withdraw it.
Answers
Answer:
C
Explanation:
( I dun know how to explain it but i do know that the answer is C. Saw it in a past paper.)
What exactly is matter? (for fun)
Answers
Answer:
Fun facts about matter
States of Matter: Facts
Matter is all around us. Matter is the air you are breathing. ...
Solids. Matter that is composed of atoms packed tightly together are known as solids. ...
Liquids. Liquids do not hold their shape at room temperature. ...
Gases. ...
Change of State. ...
More About Atoms. ...
Elements. ...
Compounds.
suppose a certain heat engine has an efficiency of 35% . a thermodynamic diagram showing a hot reservoir above, a cold reservoir below, and a closed system in between. a thick arrow indicates that heat flows into the system from the hot reservoir. thinner arrows indicate that the system does work and expels heat into the cold reservoir. in order for this heat engine to do 420 j of useful work, how much energy must be taken in as heat from the high-temperature reservoir?
Answers
Energy must be taken in as heat from the high-temperature reservoir is 1200 J.
What do you mean by thermodynamics?The science of thermodynamics examines how heat, work, temperature, and energy are related. The flow of energy from one location to another and from one form to another is broadly what thermodynamics is concerned with.
The efficiency of a heat engine is the ratio of the useful work done by the engine to the total heat energy taken in from the hot reservoir. In this case, the efficiency is 35%. Therefore, the useful work done by the engine is 35% of the total heat energy taken in from the hot reservoir.
If the heat engine does 420 J of useful work, we can use the efficiency formula to find the total heat energy taken in from the hot reservoir:
Total heat energy = (Useful work) / (Efficiency) = 420 J / 0.35 = 1200 J
So, in order for this heat engine to do 420 J of useful work, it must take in 1200 J of energy as heat from the high-temperature reservoir.
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If your initial speed was 15 m/s , and you were heading due west, what was your average velocity during braking
Answers
Answer:
Your average velocity would be 20 m/s.
Explanation:
hope this helped!
A person standing on the roof of a building drops a 0. 125 Kg ball on the ground. A
child on eight floor saw the ball passing with a speed of 33. 1 m/s. The first floor of the building
is 12. 0 m high and each successive floor is 8. 00 m high. Determine the total numbers of floors
in the building. How fast was the ball falling just before it hit the ground? What was its kinetic
energy just before it hit the ground?
Answers
A person standing on the roof of a building drops a 0. 125 Kg ball on the ground. A child on eight floor saw the ball passing with a speed of 33. 1 m/s. There are total eight floor in the building and he kinetic energy of the ball just before it hit the ground was 62.0 J.
To determine the total number of floors in the building, we can first calculate the distance the ball traveled before the child on the eighth floor saw it. We know that the ball was dropped from rest and the speed at which it was observed on the eighth floor was 33.1 m/s. We can use the equation for free fall:
\(h = (1/2)gt^2\)
Where h is the distance fallen, g is the acceleration due to gravity (9.8 m/s^2), and t is the time taken to fall. Rearranging the equation to solve for t, we get:
\(t = sqrt(2h/g)\)
Plugging in the height of the eighth floor (8 x 8 = 64 m), we get t = 3.2 s. This is the time taken for the ball to fall from the roof to the eighth floor.
To determine the total number of floors, we can use the height of the first floor (12 m) and the time taken for the ball to reach the ground from the eighth floor (t = 3.2 s). The distance traveled in this time can be found using the equation for constant acceleration:
\(d = vt + (1/2)at^2\)
Where d is the distance traveled, v is the initial velocity (which is zero in this case), a is the acceleration due to gravity (-9.8 m/s^2), and t is the time taken. Plugging in the values, we get:
d = 12 + 8(n-1) = 12 + 8n - 8 = 8n + 4
(Where n is the number of floors between the first and eighth floor)
Setting this equal to the distance traveled by the ball in 3.2 s (64 m), we get:
8n + 4 = 64
Solving for n, we get n = 7.5. Since we cannot have a fraction of a floor, we can round up to 8 floors. Therefore, the total number of floors in the building is 8.
To determine the speed of the ball just before it hit the ground, we can use the equation for free fall:
\(v^2 = u^2 + 2gh\)
Where v is the final velocity (which we want to find), u is the initial velocity (which is zero), g is the acceleration due to gravity (9.8 m/s^2), and h is the height from which the ball was dropped (which we assume to be the height of the building). Plugging in the values, we get:
v = sqrt(2gh) = sqrt(2 x 9.8 x 8 x 8) = 31.4 m/s
Therefore, the ball was falling at a speed of 31.4 m/s just before it hit the ground.
To determine the kinetic energy of the ball just before it hit the ground, we can use the equation:
\(KE = (1/2)mv^2\)
Where KE is the kinetic energy, m is the mass of the ball (0.125 kg), and v is the speed just before it hit the ground (31.4 m/s). Plugging in the values, we get:
\(KE = (1/2) x 0.125 x 31.4^2 = 62.0 J\)
Therefore, the kinetic energy of the ball just before it hit the ground was 62.0 J.
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Students are asked to design an experiment about Newton’s 2nd Law. One student decides to roll a marble down a ramp into a pile of sand to measure the force impact.
Which variable should she manipulate to best exemplify the relationship explained by this law?
A.She should use a heavier marble, because the marbles will roll at the same rate of acceleration but more mass will produce a larger impact force.
B.She should increase the slope of the ramp by propping it up to higher height, because a steeper ramp will cause a greater rate of acceleration and a larger impact force.
C.She should use a heavier marble, because a bigger marble will accelerate more quickly down the ramp and cause a greater impact force.
D.She should decrease the slope of the ramp, because a ramp with a smaller slope will allow the ball more time to build up speed and cause a greater impact force.
Answers
Answer:
A
Explanation:
Trust me I just took it !
A parallel-plate capacitor has plates of area 2.87×10^-4 m. What plate separation is required if the capacitance is to be 1490 pf ? assume that the space between the plates is filled with air? (dielectric constant for air is 1.00059)
Answers
The distance is 1.92 * 10^5 m
What is the capacitance of a capacitor?The capacitance of a capacitor is a measure of its ability to store electrical charge when a voltage is applied across its plates. It is defined as the ratio of the magnitude of the charge stored on each plate to the voltage applied between the plates.
Using C = εoA/d
d = εoA/C
d = 1.00059 * 2.87×10^-4 / 1490 * 10^-12
d = 1.92 * 10^5 m
The capacitance of a capacitor depends on several factors, including the size and geometry of its plates, the distance between the plates, and the dielectric material between the plates. A larger plate area, a closer distance between the plates, and a higher dielectric constant of the material all lead to a higher capacitance.
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How did conflict between countries affect trade along the Silk Road?
Answers
Answer:
A: It decreased trade because soldiers no longer protected the oases.
I took it on E2020. I hope I've helped. If you need further explanation, please comment below.
Answer:
Yes it is A
It decreased trade because soldiers no longer protected the oases.
Explanation:
a monophyletic group, sometimes called a clade, includes an ancestral taxon and all of its descendants. reptiles are not a monophyletic group because _____ is not included.
Answers
Reptiles are not a monophyletic group because the taxon "birds" is not included.
Birds are descended from a common ancestor with other reptiles, but they have evolved many unique features and are now considered a distinct group within the larger clade of reptiles. Therefore, the traditional classification of reptiles, which includes turtles, snakes, lizards, crocodiles, and birds, is not monophyletic.
In order to create a monophyletic group that includes all the descendants of the most recent common ancestor of reptiles, birds must be included as a subgroup of reptiles. This revised classification is supported by modern molecular and genetic evidence.
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Need
Help answering the questions
Answers
During photosynthesis, plants transform the energy in sunlight into chemical
energy by converting molecules of carbon dioxide and water into sugar and
oxygen molecules. A scientist wants to share what she has learned about this
process. What are two reasons the scientist might use models to help
represent her findings?
A. The process is very complex.
B. Scientists need to replicate her experiments.
C. The molecules are too small to show the actual molecules in her
report.
D. Photosynthesis cannot be carried out in a laboratory
Answers
B and D
Explanation:
The scientists need to replicate her experiment and to do that you need actual sunlight,it can't be carried out in a laboratory
Hope this helped
a circuit is connected to 8 volt battery and it has 2 amperes of current flowing through the wires.What is the resistance of the circuit
Answers
Answer:
4 ohms
Explanation:
Current = Voltage/resistance
2 = 8/R
2R = 8
R = 4
a geostrophic flow is characterized by a balance between what two forces?
Answers
A geostrophic flow is a type of motion in the atmosphere or ocean that is influenced by the Coriolis force and the pressure gradient force. The Coriolis force arises due to the rotation of the Earth and causes the fluids to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
The pressure gradient force, on the other hand, is responsible for the movement of air or water from high pressure to low pressure regions. In a geostrophic flow, these two forces are balanced, resulting in a steady and straight flow along the contour lines of constant pressure.
The geostrophic flow is an important concept in meteorology and oceanography as it helps to explain the large-scale circulation patterns of the Earth's atmosphere and oceans. This type of flow can be observed in high-altitude winds, ocean currents, and weather systems such as hurricanes and cyclones. Understanding the dynamics of geostrophic flow is crucial for predicting weather patterns and studying the Earth's climate system.
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if a distance vs time graph is a vertical line, how would the velocity vs time graph look?
Answers
The sprinter's changing speed, as well as the speed of any other moving object or person, is displayed on a velocity-time graph. The slope of the graph line on a velocity-time graph is used to represent acceleration.
What is meant by acceleration?Velocity's rate of change with time, both in terms of speed and direction. A point or object going straight ahead is accelerated when it accelerates or decelerates. m/s2 is the unit of acceleration. The term "constant acceleration" refers to the pace at which a particle's velocity changes.
Which four forms of acceleration are there?Uniform Acceleration. Non uniform acceleration. Instantaneous Acceleration. The slope of the time-velocity graph determines the rate of acceleration.To know more about acceleration visit:
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What is the weight (w) of the water displaced by the aluminum test object?
Choose one : 4.9 N
9.8 N
49 N
98 N
Answers
Option 4.9 N is correct.
The weight (w) of the water displaced by the aluminum test object is 4.9 N.
How to calculate the weight of water displaced by an object? The weight of water displaced by an object can be calculated using Archimedes’ principle, which states that the weight of a liquid displaced by an object is equal to the buoyant force acting on the object. When an object is placed in a liquid, it experiences a buoyant force that is equal to the weight of the liquid displaced by the object.
Buoyant force = weight of displaced liquid Using the given options, we can calculate the weight of water displaced by the aluminum test object and match it with the answer. The mass of the aluminum object is 0.5 kg and its volume is 0.0001 m3. We know that the density of water is 1000 kg/m3 and the acceleration due to gravity is 9.8 m/s2.
Therefore, the weight of water displaced by the aluminum test object is given by: w = mg = ρVg = 1000 x 0.0001 x 9.8 = 0.98 N = 4.9 N (divided by 2 since only half the object is submerged)Therefore, the weight (w) of the water displaced by the aluminum test object is 4.9 N.
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what do astronomers think is the cause of shorteer-duration gamma ray bursts?
Answers
Astronomers believe that shorter-duration gamma ray bursts (GRBs) are caused by the merger of two neutron stars or a neutron star and a black hole.
Gamma ray bursts are the brightest and most energetic explosions in the universe. They are classified into two types: long-duration GRBs and short-duration GRBs. Long-duration GRBs are believed to be caused by the collapse of massive stars, while shorter-duration GRBs have been more difficult to understand.
Shorter-duration gamma-ray bursts (GRBs) typically last less than two seconds and are known for their intense, high-energy radiation. The prevailing theory among astronomers is that these bursts occur when two compact objects, such as neutron stars or a neutron star and a black hole, merge together. This merger results in the release of a massive amount of energy in the form of gamma rays, creating the observed short-duration gamma-ray burst.
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________ is/are an example of conventional hydrocarbon sources.
a) natural gas
b) petroleum oil
c) shale tar sands
Answers
Examples of conventional hydrocarbon sources include natural gas and petroleum oil, while shale and tar sands are not considered conventional sources.
Conventional hydrocarbon sources refer to the traditional and widely used reservoirs of hydrocarbon deposits. Among the options provided, natural gas and petroleum oil fall under the category of conventional sources, while shale and tar sands are considered unconventional sources.
Natural gas is a fossil fuel primarily composed of methane and is commonly found in underground reservoirs. It is typically extracted through drilling wells and has various applications, including heating, electricity generation, and as a fuel for vehicles.
Petroleum oil, also known as crude oil, is another conventional hydrocarbon source. It is a mixture of hydrocarbon compounds and is found in underground reservoirs. Crude oil is refined to produce various products, including gasoline, diesel fuel, jet fuel, and lubricants.
On the other hand, shale and tar sands are considered unconventional sources of hydrocarbons. Shale refers to sedimentary rocks containing organic matter that can be extracted through hydraulic fracturing or "fracking." Tar sands, also known as oil sands, are a mixture of sand, water, clay, and bitumen. Extracting hydrocarbons from shale and tar sands involves more complex and costly extraction methods compared to conventional sources.
Overall, while natural gas and petroleum oil are examples of conventional hydrocarbon sources, shale and tar sands fall under the category of unconventional sources.
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You go to the store and buy 3 apples. Each apple has a mass of 4.66 grams. What is the total mass of apples you bought.
Remember the difference between a counted and a measured number.
NEEP HELP!
Taking Finals
Answers
its 13.98. it's simple multiplication 3* 4.66= 13.98
pleasse help
Which group on the periodic table contains only metals? the last group along the bottom along the top the second group
Answers
Hi,
The correct answer is letter B.
The last group contains noble gases, while both along the top and along the bottom the elements on the right are non-metals.
Answer:
Group 2
Explanation:
The second group consists of only alkaline earth metals, because it posses beryllium, magnesium, calcium, strontium, barium, and radium.
What is the wavelength in nanometers of light with a frequency of 7. 8 × 1015 hz?.
Answers
38 nm A waveform signal that is carried in space or down a wire has a wavelength,
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 meters (m), centimeters (cm), or millimeters (mm) (mm).
The wavelength of the wave is the distance covered by it throughout a whole oscillation. A meter is the wavelength's SI unit (m).
*v=c/λ
v: 7.8 × 10^15 Hz c: 3.00*10^8 λ:?
7.8 × 10^15 Hz = 3.0010^8/λ
λ = 3.0010^8 m/s /7.8 × 10^15
λ = 3.8 10^-8
The calculated wavelength is in unit of meter. use the relationship between meter and nanometer to convert to the correct units.
3.8 10^-8 m (1nm/ 110^-9m )
= 38 nm
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What natural process is responsible for the shape of the mushroom rock?
(PLEASE HELP ME!!!!!)
Answers
Answer:
A mushroom rock, rock pedestal, or gour is a typical mushroom-shaped landform that is formed by the action of wind erosion. ... In some cases, harder rocks are arranged horizontally over a softer rock, resulting in such erosion.
Explanation:
Answer:
wind erosion
Explanation: