NEED HELP ASAP WITH THESE QUESTIONS GIVING FAIR AMOUNT OF POINTS IF HELPED WITH ALL QUESTIONS Violet light has a wavelength of 4.20 x 10-12 m. What is the frequency?






3. A photon has a frequency (n) of 3.468 x 106 Hz. Calculate its energy






Calculate the energy (E) and wavelength (l) of a photon of light with a frequency of 4.215 x 1014 Hz.







Calculate the frequency and the energy of blue light that has a wavelength of 400 nm
(h = 6.62 x 10-34 J-s).









Calculate the wavelength and energy of light that has a frequency of 9.5 x 1015 Hz.






A photon of light has a wavelength of 0.090 cm. Calculate its energy.






Calculate the energy and frequency of red light having a wavelength of 2.80 x 10-5 cm.






Calculate the energy (E) and wavelength (l) of a photon of light with a frequency of 5.165 x 1014 Hz.







The wavelength of green light from a traffic signal is centered at 7.20 x 10-5 cm. Calculate the frequency.








If it takes 1.56 seconds for radio waves (which travel at the speed of light) to reach the moon from Earth, how far away is the moon?






Calculate the frequency of light that has a wavelength of 4.20 x 10-9m. Identify the type of electromagnetic radiation.

Answers

Answer 1

Answer:

a) 7.14e19 Hz

b) 2.298e-27 J

c) 2.793e-19 J; 7.117e9 nm

d) 7.5e14 Hz; 4.96e-19 J

e) 6.2947e-18 J; 31.6 nm

f) 2.21e-22 J

g) 7.1e-19 J; 1.1e15 Hz

h) 3.422e-19 J; 581 nm

i) 4.2e14 Hz

j) 1.92e8 m

k) 7.14e16 Hz; Ultraviolet

Explanation:

Frequency: ν       Wavelength: λ       Energy: E       Speed of light: C (3.00e8)       Planck's Constant: h (6.626e-34)

ν -> λ    λ = C/ν

λ -> ν    ν = C/λ

For either of these equations, wavelength must be converted to meters or nanometers, depending on the equation.

For ν -> λ, after doing the equation, convert the wavelength into nanometers by dividing by 1e-9.

For converting λ -> ν, convert the wavelength into meters by multiplying by 1e-9.

For energy: E = hν = hc/λ

Now that the setup is out of the way:

a) Violet light has a wavelength of 4.20 x 10-12 m. What is the frequency?

λ -> ν    ν = C/λ

[tex]\frac{3.00e8}{4.20e-12}[/tex] = 7.14e19 Hz

b) A photon has a frequency (n) of 3.468 x 106 Hz. Calculate its energy

E = hν = hc/λ

(6.626e-34) (3.468e6) = 2.298e-27 J

c) Calculate the energy (E) and wavelength (l) of a photon of light with a frequency of 4.215 x 1014 Hz.

E = hν = hc/λ

(6.626e-34) (4.215e14) = 2.793e-19 J

ν -> λ    λ = C/ν

[tex]\frac{3.00e8}{4.215e14}[/tex] = 7.117 m

[tex]\frac{7.117m}{1}*\frac{1nm}{1e-9m}[/tex] = 7.117e9 nm

d) Calculate the frequency and the energy of blue light that has a wavelength of 400 nm  (h = 6.62 x 10-34 J-s).

λ -> ν    ν = C/λ

[tex]\frac{400 nm}{1} *\frac{1e-9m}{1nm}[/tex] = 4e-7 m

[tex]\frac{3.00e8}{4e-7}[/tex] = 7.5e14 Hz

E = hν = hc/λ

(6.626e-34) (7.5e14) = 4.96e-19 J

e) Calculate the wavelength and energy of light that has a frequency of 9.5 x 1015 Hz.

ν -> λ    λ = C/ν

[tex]\frac{3.00e8}{9.5e15}[/tex] = 3.16e-8 m

[tex]\frac{3.16e-8m}{1}*\frac{1nm}{1e-9m}[/tex] = 31.6 nm

E = hν = hc/λ

(6.626e-34) (9.5e15) = 6.2947e-18 J

f) A photon of light has a wavelength of 0.090 cm. Calculate its energy.

E = hν = hc/λ

Convert the wavelength from cm to meters:

[tex]\frac{0.090cm}{1} *\frac{1m}{100cm}[/tex] = 9e-4 m

[tex]\frac{(6.626e-34)(3.00e8)}{9e-4}[/tex] = 2.21e-22 J

g) Calculate the energy and frequency of red light having a wavelength of 2.80 x 10-5 cm.

E = hν = hc/λ

Convert the wavelength from cm to meters:

[tex]\frac{2.80e-5cm}{1} *\frac{1m}{100cm}[/tex] = 2.8e-7 m

[tex]\frac{(6.626e-34)(3.00e8)}{2.8e-7}[/tex] = 7.1e-19 J

λ -> ν    ν = C/λ

Convert the wavelength from cm to meters:

[tex]\frac{2.80e-5cm}{1} *\frac{1m}{100cm}[/tex] = 2.8e-7 m

[tex]\frac{3.00e8}{2.8e-7}[/tex] = 1.1e15 Hz

h) Calculate the energy (E) and wavelength (l) of a photon of light with a frequency of 5.165 x 1014 Hz.

E = hν = hc/λ

(6.626e-34) (5.165e14) = 3.422e-19 J

ν -> λ    λ = C/ν

[tex]\frac{3.00e8}{5.165e14}[/tex] = 5.81e-7 m

[tex]\frac{5.81e-7m}{1}*\frac{1nm}{1e-9m}[/tex] = 581 nm

i) The wavelength of green light from a traffic signal is centered at 7.20 x 10-5 cm. Calculate the frequency.

λ -> ν    ν = C/λ

Convert the wavelength from cm to meters:

[tex]\frac{7.20e-5 cm}{1} *\frac{1m}{100cm}[/tex] = 7.2e-7 m

[tex]\frac{3.00e8}{7.2e-7}[/tex] = 4.2e14 Hz

j) If it takes 1.56 seconds for radio waves (which travel at the speed of light) to reach the moon from Earth, how far away is the moon?

  All we want to do here is to convert frequency (speed) to wavelength (distance). This problem requires a bit of thought, but it isn't bad once you realize that frquency is speed and wavelength is distance. It becomes just like the other problems after that. Also, I'll leave this distance in meters, but I think you can figure out how to convert it if it wants it in another unit.

  One second is equal to 1 Hertz, so our frequency is 1.56 Hz.

ν -> λ    λ = C/ν

[tex]\frac{3.00e8}{1.56}[/tex] = 1.92e8 m

  The actual distance from the earth to the moon via google is 3.84e7, but sometimes problems like this will mess with the numbers to make sure that you didn't just look up the answer. I'm still pretty sure that this is right, however.

k) Calculate the frequency of light that has a wavelength of 4.20 x 10-9m. Identify the type of electromagnetic radiation.

First, we convert wavelength to frequency, as normal:

λ -> ν    ν = C/λ

[tex]\frac{3.00e8}{4.20e-9}[/tex] = 7.14e16 Hz

Then we identify the electromagnetic wave type. You can look up a conversion chart for these on google, but since our frequency is in the e15 - e17 range, this light is considered ultraviolet.


Related Questions

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Answer:

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Answer:

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Explanation:

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When an object reaches supersonic speed a sonic boom will occur.


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the answer is C

Explanation:

i know this one, and may YOU PLEASE MARK BRAINLIEST I ONLY NEED ONE MORE CROWN TO MOVE TO THE NEXT RANK

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a
They move around more.

b
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c
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d
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Answers

A. They move around more.

Answer:

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Explanation:

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Answers

Answer:

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Which of the following is a CORRECT statement?


Chemical change cannot be undone or reversed.


Physical change often cannot be undone or reversed.


In chemical change, you end up with the same substance you started with.


In physical change, particles of 2 or more substances rearrange to form new or different substance.

Answers

ANSWER: Chemical change cannot be undone or reversed.

Answer:

Detail is given below.

Explanation:

1) Chemical change cannot be undone or reversed.

The given statement is correct. Because,

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible .

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood  and this reaction can not be reversed.

2) Physical change often cannot be undone or reversed.

The given statement is incorrect.

Physical Change                                                                                              

The changes that occur only due to change in shape or physical properties but their chemical or internal composition remain unchanged.  

These changes were reversible.

Example :

Water converting to Ice

Water converting to gas

3) In chemical change, you end up with the same substance you started with

The given statement is incorrect. Consider the following example.

The reaction of Hydrogen and oxygen:

H₂ (g)  + O₂  (g) -------------------------------------> 2H₂O  (l)

A totally new compound is formed when oxygen and hydrogen are undergo reaction which is water.

4) In physical change, particles of 2 or more substances rearrange to form new or different substance.

The given statement is incorrect.

When particles rearrange them selves the different substance is not formed. Consider the example of water when it converted into ice or vapors. Only phase is changed but water retain its properties so new substance is not formed.

According to the law of conversion of mass in a chemical equation

Answers

The Law of Conservation of Mass
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What would happen if there were 3 protons and 0 neutrons in the nucleus of an atom?

Answers

Answer:

the atom will be positife atom

Please help me thank you! Stay safe

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Answer:

number 3

Explanation:

Explanation:

it's the third graph

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Answer:

i believe it's c

Explanation:

my reason is that if you look at the electrons 2 is the most comm

Question 9 (2 points)
What is the only part of the scientific method that can be proven wrong?
A/

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Answer:

hypothesis

Explanation:

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You are about to take a short trip. However, you will not be traveling by car or bus; instead you will be traveling up in a hot air balloon. You know that hot air balloons, like the ones pictured, are able to rise when the air contained in them is heated. Why does the balloon rise? What is happening at the molecular level to make the balloon rise?

Answers

Answer:

Hot air rises. Heated air molecules “spread out” or expand and bounce around, and the space becomes less dense than the surrounding space. Increasing the air temperature inside the balloon envelope makes it less dense than the air, thus making it “lighter than air”.

Explanation:

I'm new to brainly but I hope this helped!

Balloon rise because  Warm air ascends. Heat causes the molecules of the air to "spread out," or expand, and bounce off one another, making the area less dense than the surroundings.

What are molecules ?

A molecule is the smallest unit of a substance that keeps its content and properties. It is made up of two or more atoms that are joined together by chemical bonds.

Chemistry is built on molecules. The element symbol and a subscript indicating the number of atoms are used to identify molecules.

When Balloon rise because  Warm air ascends. Heat causes the molecules of the air to "spread out," or expand, and bounce off one another, making the area less dense than the surroundings.

The air inside the balloon's envelope becomes less dense as the temperature rises, making it "lighter than air."

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Answers

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Answers

Answer:

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The compound, BeCl2, would be formed by
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b. The transfer of all electrons
c.
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Answers

Answer:

The sharing of valence electrons

Explanation:

A covalent bond is formed when two or more atoms share valence electrons.

In BeCl2, electrons are shared between the beryllium atom and two chlorine atoms.

Owing to the large difference in electronegativity between the two elements, the bond is polar covalent.

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Answers

Aerosol: When particles of solid or liquid get dispersed in a gaseous medium, the mixture is known as Aerosol. ... Sol: Sol is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid. • Gel: Gel is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid.

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A. Decrease the Temperature
B. Decrease the Pressure
C. Increase the Temperature
D. Increase the Pressure

Answers

Answer:

increase the temperature

Explanation:

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C. Increase the Temperature

Water molecules are polar because the
water molecule has a linear shape.
water molecule has a bent shape.
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Answers

Answer: B (water molecule has a bent shape)

Explanation:

Water molecules are polar molecules because of their shape. Water molecules have one side that is positively charged due to hydrogen atom which is partially positive and the other side which is negatively charged, due to the oxygen atom.

When two molecules get close to each other the polar forces of attraction brings them close to each other. Oxygen bonds with several hydrogen atoms in the other water molecules resulting to hydrogen bonds.

Answer:

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Explanation:

Why is the nitrogen cycle considered a closed system?

Answers

Answer:

because nitrogen is fixed by bacteria and assimilated by plants

Explanation:

Answer:

It is a considered a closed system because nitrogen is fixed by bacteria and is taken in by plants.

Explanation:

Which of the following sets of data could match the unknown element?

Answers

Answer:

✔️Metalliod, Mass: 73

Explanation:

The unknown element that is represented in the Periodic table is Germanium (Ge). It is in Group 14(IVA) and Period 4 of the periodic table. It is a metalloid and a silvery-gray substance. It's properties are intermediate between metals and nonmetals. It has a mass of 73 and an atomic number of 32.

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Ali rolled a ball down a hill. This graph shows the kinetic and potential energy of the moving ball.

A line graph The graph is titled Mechanical Energy and shows an inverse relationship between Potential energy and Kinetic Energy. The Y axis is Potential energy (J). The X axis is Kinetic energy (J). The point of the graph are as such: (0, 5); (1, 4); (2, 3); (3, 2); (4, 1); (5, 0)

According to the graph, what is the mechanical energy of the ball?

A. 0 J
B. 5 J
C. 20 J to 25 J
D. 0 J to 4 J

Answers

Answer:D

Explanation:

Hope I helped

When we plot the relation between kinetic energy and potential energy, we get an inverse line. The mechanical energy of an object is the sum of kinetic energy and potential energy. . The mechanical energy here is 5 J.

What is mechanical energy?

Mechanical energy of an objects is the sum of it energy of motion and the stored energy of position, that is the sum of kinetic energy and potential energy.

Kinetic energy of an object result from its motion whereas potential energy results from the position of the object. Both kind of energy depends on the mass of the object.

Kinetic energy also depends on the velocity of the object and potential energy depends on the height and gravity experienced by it. Both are thus directly proportional to the mass of the object.

Here, all the points in the graph have a total energy of 5 J . for example for the first point the sum is 0 +5= 5J. Similarly, all the points have a total of 5 J.

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Please help first one two answer will get brainliest!
Type the correct answer in the box. Spell all words correctly.
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Stacy knows never to touch the __________
with her hands or any other object so she does not accidentally discharge the weapon.

Answers

Answer:

the trigger . it's the trigger

Answer:

It is the handle

Explanation:

I know because I did this test in school

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A) In aldehydes, the carbon is always joined to at least one hydrogen atom.

B)Every ketone molecular formula is unique.

C) Aldehydes are similar to ketones, but their carbonyl group is located in the middle of the carbon chain.

D) In ketones, the carbon of their carbonyl group is bonded with one other carbon.

Answers

Answer:

A) In aldehydes, the carbon is always joined to at least one hydrogen atom.

Explanation:

Aldehydes and Ketones are organic compounds.

The main difference between them is that aldehydes have the carbon atom attached to at least one hydrogen atom.

In ketones, the carbon is attached to another carbon.

The IUPAC names of alkanals usually end with -eFor alkanones usually end with -one

To reiterate, the striking difference between the two families is that in alkanals, a hydrogen atom is directly attached to the carbonyl group while in alkanones, no hydrogen atoms is attached to the carbonyl group but two bulky alkyl groups.

what do you mean by international understanding peace

and cooperation​

Answers

Answer:

International understanding or internationalism is a feeling that the individual is a not only a member of his country, but a member of the world as well.  To ensure world peace.  To prevent world wars.  To promote human welfare. To promote mutual understanding and interdependence.

Help please and explain so I could see you didn’t guess

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Answer:

A

Explanation:

because the acid in your stomach can break down anything that you eat causing you to have to use the restroom

What is the mass of 8.250 moles of Cu2O?

Answers

Answer:

How many moles CU2O in 1 grams? The answer is 0.0019838596354237. We assume you are converting between moles CU2O and gram. You can view more details on each measurement unit: molecular weight of CU2O or grams The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CU2O, or 504.06792 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles CU2O and gram. Type in your own numbers in the form to convert the units

Pollinators, like bees, have a mutualistic relationship with plants. The pollinators carry pollen from plant to plant. What statement provides support for this as a mutualistic relationship?

A)The bees receive no benefit but are also not harmed. Only the plant receives benefits.
B)The bees provide protection for the flowers and the flowers protect the bees.
C)The bees deprive the flowers of valuable resources while pollinating the flowers.
D)The bees receive food from the nectar while the plants are pollinated.

Answers

Answer:

D)The bees receive food from the nectar while the plants are pollinated.

Explanation:

Bees and flowering plants have a mutualistic relationship where both species benefit. Flowers provide bees with nectar and pollen, which worker bees collect to feed their entire colonies. Bees provide flowers with the means to reproduce, by spreading pollen from flower to flower in a process called pollination.

Answer:

The bees receive food from the nectar while the plants are pollinated.

Explanation:

This is correct, but make sure it's for your answer choice, mine was A, but they switch them around.

Which scenario is an example of primary succession?

A.
the formation of soil after a volcano


B.
the growth of weeds after a flood


C.
the establishment of a forest in an abandoned crop field


D.
the recovery of grassland after a fire

Answers

Answer:

the answer to your question is A

Please help me

Identify each thermal energy scourge as Conduction (A) Convection (B) Radiation (c)

Answers

Answer:

I think it is...

1) A

2) C

3) A

4) B

5) A

6) C

Explanation:

I'm so sorry that I'm so late, I just wanted to answer it to help you. I don't know if you got graded on it already, but hey, I tried :)!

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