When an electron beam strikes a block of copper, x-rays of frequency 6 x 10^18 Hz are emitted. What is the wavelength of these x-rays? Answer in units of pm.

Answers

Answer 1

Answer:

0.5×10² pm

Explanation:

Given data:

Frequency of x-ray = 6×10¹⁸ Hz

Wavelength of x-ray = ?

Solution:

Wavelength is designated as "λ" and it is the measured in meter. It is the distance between the two crust of two trough.

Formula:

speed of wave = wavelength × frequency

speed = 3×10⁸ m/s

now we will put the values in formula.

3×10⁸ m/s = λ  × 6×10¹⁸ Hz

Hz = s⁻¹

λ  = 3×10⁸ m/s / 6×10¹⁸ s⁻¹

λ  = 0.5×10⁻¹⁰ m

m to pm

0.5×10⁻¹⁰ m × 10¹² pm/1m

0.5×10² pm


Related Questions

In the apple activity you completed which of the following is an example of a constant

Answers

Answer: the type of apple because it is an example of a constant

Explanation:

What is the role for dna in determining an organisms traits?

Answers

Answer:

DNA contains the genes or the genetic material of an organism. Its role is to store information that are essential in controlling the genetic makeup or producing a certain characteristic of an organism.

The orbital diagram shows the valence electrons of sulfur, which has 16 electrons. If the electrons were added to the atom one at a time, which would be the last electron to occupy an orbital?

Answers

Answer:

3px

Explanation:

The electronic configuration of sulphur is given as;

1s2 2s2 2p6 3s2 3px2 3py1 3pz1.

Recall that in accordance with Hund's rule, electrons occur singly first before pairing takes place during the filling of degenerate orbitals.

The last sub-level into which electrons are filled in sulphur is the 3p sub-level having three degenerate orbitals, 3px, 3py and 3pz.

According to Hund's rule, these levels are first singly filled before pairing begins. Hence the last electron in sulphur goes into the 3px orbital.

Answer:

3px

Explanation:

The electronic configuration of sulphur is given as;

1s2 2s2 2p6 3s2 3px2 3py1 3pz1.

Recall that in accordance with Hund's rule, electrons occur singly first before pairing takes place during the filling of degenerate orbitals.

The last sub-level into which electrons are filled in sulphur is the 3p sub-level having three degenerate orbitals, 3px, 3py and 3pz.

According to Hund's rule, these levels are first singly filled before pairing begins. Hence the last electron in sulphur goes into the 3px orbital.

Explanation:

if a man could fall through a hole that passes through the center of Earth, gravity would cause him to:

A.Gain speed until he reached the other end of the tunnel.
B. Stop falling at the center of Earth.
C. Gain speed until he passed the center and then lose speed until he reached the other side.

Answers

I believe it would be C.
Although I am not sure because along with gravity friction would occur but this is the center of the earth so I am not completely sure but I really hope it helps :) if it’s wrong let me know

How many cesium atoms are in 21.9 grams?

Answers

The answer to the problem is 0.16477879575292056

One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar concentration of 24.7M. How many moles are contained in 500 mL of solution?

Answers

Mol of methanol =12.35Further explanation

Mole itself is the number of particles contained in a substance

1 mole = 6.02.10²³ particles

Mole : the ratio of the amount of substance mass and its molar mass

[tex]\large{\boxed{\boxed{\bold{mole=\frac{mass}{molar\:mass}}}}[/tex]

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]

Molar concentration of methanol=24.7 M

Volume of solution = 500 ml = 0.5 L

[tex]\tt mol=M\times V\\\\mol=24.7\times 0.5\\\\mol=12.35[/tex]

How many total atoms are in the formula 2H2SO4

Answers

Answer:

In 2H2SO4, the number of hydrogen atoms is (1,2,4,8) the number of sulfur atoms is (1,2,4,8) and the number of oxygen atoms is (1,2,4,8)

Explanation:

I've done this problem before, but I did it a month or so back so I'm not 100% sure but I'm pretty sure this is the correct answer. Hope this helps!

Answer:2 hydrogen atoms 1 sulfur atom 4 oxygen atom

hope I helped!

HELP PLEASEE
Name three elements present in the ingredients of the cereal drink which are not listed in the nutrition facts​

Answers

Answer:

Let's start with the fact that cereals , are made of grains and are mostly carbohydrates. therefore they contain carbon oxygen and hydrogen. They also contain proteins so have nitrogen. Plants have the minerals that are in the soil where they grow, so the list you have is correct. They also generally have added vitamins ad minerals. The vitamins contain C, H, O N, and a few others such as sulfur, The added minerals might contain:copper, iron, zinc, cobalt, selenium, silicon and molybdenum .

Mark me as brainliest if it was helpful

The three elements present in the ingredients of the cereal drink which are not listed in the nutrition facts are Iron, Calcium, and Zinc

Cereals are monocotyledonous grass crops cultivated annually for the purpose of consumption. They are rich in fiber and energy. Examples of them include;

maize, barley, wheat, oat, rye, etc.

Cereal drinks are processed drinks extracted from cereal crops through fermentation. They are rich in nutrients as they contain important sources of carbohydrates, dietary protein, and vitamins.

The ingredients present in a cereal drink are composed of essential elements such as:

copper, cobalt, iron, zinc, molybdenum, iodine, chromium, and selenium.

Some of which are not listed in the nutrition facts are Iron, Calcium, and Zinc.

Therefore, we can conclude that the elements present in the ingredients of the cereal drink which are not listed in the nutrition facts can be Iron, Calcium, and Zinc.

Learn more about essential elements here:

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How much heat is required to melt 42.0 grams of water at 0*C?
Hurry...

Answers

Answer:

Heat required to melt 42 g if ice is 13,860 J

Explanation:

The amount of heat required to melt  grams of water at 0°C is given as follows;

The mass of the ice (water), m = 42 g

The latent heat of fusion of ice Δ[tex]H_f[/tex]= 330 J/g

Therefore, heat required to melt 42 grams is given as follows;

Heat required to melt ice = Mass of the ice, m × The specific latent heat of fusion of the ice, Δ[tex]H_f[/tex]

Heat required to melt 42 g if ice = m × Δ[tex]H_f[/tex] = 42 g × 330 J/g = 13,860 J

Heat required to melt 42 g if ice = 13,860 J.

The number of shovels and cost per 1000 kg for
Ca(OH)2

Answers

Answer:500

Explanation:

500 is the answer ..........

hello nice ppl(ɔ◔‿◔)ɔ ♥

Answers

Answer:

Hi

Explanation:

How has your brainly experience been so far? Are you liking?

Answer:

Thx you are sooo noice

Explanation:

UwU U3U

all living things need energy to survive The most common source of energy is organisms is glucose molecules which are used as food a plant food is no exception where do plants get the carbon needed to make glucose molecules during the process of photosynthesis.

A. From the ground

B. From the air

C. From the water

D. From the sun

Answers

Answer:

the answer is air

Explanation:

Answer:

B. From the air

Explanation:

oxidation is a example of ?the answer choices are are here
A.a financial property,B.a chemical property,C.cool science stuff,D.a physical property

Answers

Answer:

B. a chemical property

Explanation:

Oxidation requires a chemical reaction to occur, therefore it is a chemical property.

A chemical property.

Explanation: Oxidation is the chemical process in which a substance gains oxygen or loses electrons or hydrogen.

if a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? use the equation h= -16t^2+4t + 4 round your answer to the nearest tenth hundredth​

Answers

Answer:

4.06

Explanation:

CCC Energy and Matter Recall that force = mass x acceleration. Explain why the
acceleration of a model rocket increases over time, even if the force from the
burning of the rocket fuel remains constant.

Answers

Answer:

The mechanical device inside just gets the energy of the fuel and not the actual liquid.

Explanation:

The acceleration increases since the mechanical device is getting the energy of the fuel and not the fluid.

Just an idea

The information regarding the acceleration of a model rocket should be explained below;

The following information should be considered:

The mechanical device i.e. inside just gets the energy of the fuel but not the actual liquid.The acceleration increases because the mechanical device is getting the energy of the fuel however not the fluid.

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Determine how you would prepare 220 mL of a 0.500 M potassium hydroxide solution starting with: a) solid potassium hydroxide b) a 1.25 M potassium hydroxide solution​

Answers

Answer:

a) 6.17 g of solid KOH

b) 88.0 mL of a 1.25 M potassium hydroxide solution​

Explanation:

a) We have to determine the mass of solid potassium hydroxide that has to be weighed to prepare 220 mL of a 0.500 M potassium hydroxide solution. We will also require the molar mass of potassium hydroxide, KOH, 56.11 g/mol.

0.220 L × (0.500 mol/L) × (56.11 g/mol) = 6.17 g

b) We will use the dilution rule to determine the volume of the 1.25 M potassium hydroxide solution​ to be measured.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.500 M × 220 mL / 1.25 M = 88.0 mL

Please help me with this I’ve been on this question for 10 minutes now...

Answers

Answer:

A

Explanation:

we know that pangea was when all the continents were connected and the tectonic plates moved, causing pangea to split into multiple pieces. so north america was formed by moving tectonic plates.

i hope this helps :))

define atom and give an example

Answers

Answer:

Many atoms consist of a positively charged nucleus composed of protons and neutrons surrounded by a negatively charged cloud of electrons. At its most basic level, an atom is any particle of matter that contains at least one proton. ... Here are some examples of atoms: Neon (Ne) Hydrogen (H)

Explanation:

What happens to a solute?
A. It gets dissolved in something else.
B. It settles out of the solution.
C. It forms a solid in the solution.
O D. Something gets dissolved in it.

Answers

The answer for this is a

A solute gets dissolved in something else. (solvent)

What is a solute?

A solute is a substance which dissolves in something else, like a solution. As a result, a homogeneous mixture is formed. A solute can be a gas, solid or a liquid.

What is a solvent?

A solvent is a substance in which a solute happens to dissolve in order to  produce a homogenous mixture. Solvents can also exist as solids, liquids as well as gases.
For example, NaCl is a solute which dissolves in water, which is a solvent. The equation is as follows
NaCl (aq) + H2O (l) → NaOH (aq) + HCl (aq)
Hence, option A is the correct option.
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As part of a chemistry experiment, Sam notes that the temperature at which liquid mercury
freezes into a solid is -102 Fahrenheit (F). The beaker of liquid mercury provided to him Is
at a room temperature of 68". By how many degrees will Sam have to cool the liquid
mercury for it to freeze into a solid?
-102"F
-34°F
102°F
170°F
o

Answers

Answer:

-34¨F

Explanation:

Several dams on the Colorado River in Texas produce electricity through hydropower. What is
an advantage of this type of energy production?

A: land is flooded when dams are built
B:Dams improve biodiversity by creating lakes out of rivers
C:hydropower provides renewable energy for human use
D:electricity can only be generated during daylight hours

Answers

Answer:

The answer is Hydropower provides...

Hydropower provides renewable energy for human use is the advantage of the production of electricity through hydropower. Therefore, option (C) is correct.

What are the advantages of hydropower?

Hydropower is a renewable source of energy that is used to generate energy via hydropower relies on the water cycle. Hydroelectric power can be defined as a domestic source of energy, allowing it to produce its own energy without depending on international fuel sources.

The hydropower sector creates reservoirs that provide recreational opportunities such as swimming, fishing, and boating. Hydroelectric power is flexible and has facilities that can quickly go from zero power to maximum output.

They provide necessary backup power during major electricity outages or disruptions because hydropower plants can produce power to the grid immediately.

Hydropower is affordable and provides low-cost electricity and durability over time compared to other sources of energy. Hydropower benefits beyond electricity production by providing irrigation support, flood control, and clean drinking water.

Learn more about hydropower, here:

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please help me.......

Answers

Answer:

D as in :D lol

1. A sodium ion has 11 protons and 10 electrons. What is its charge?​

Answers

+1 (thats the answer for it)

+1

If sodium loses an electron, it now has 11 protons, 11 neutrons, and only 10 electrons, leaving it with an overall charge of +1. It is now referred to as a sodium ion.

Which observable property of a star is indicative of the star's surface temperature?
O color
O shape
O speed
O brightness

Answers

It’s is the shape I got it right on my quiz

Sciences Grad Bosch Law of Conservation of Mass - Assess it
contents
Target: 10/2001
Science and Enging
Achemical reaction takes place in a closed system. The mass of the reactants before the reaction was
55 watte mass of the products of the reaction be according to the law of conservation
Properties of Matter

Answers

Answer:

55

Explanation:

According to the law of conservation properties of Matter in a closed system the mass of reactants is equal to the mass of products. Because there is no lose of matter or energy in closed system

Which of the following is the least likely to remain homogeneous?
. O A. All of these
O B. A supersaturated solution
O C. An unsaturated solution
O D. A saturated solution

Answers

Answer:

all

of them

Explanation:

(True or False) Only an odd number of orbitals is possible for any electron sublevel?

Answers

Answer:

The statement is true

I found this doing research.

Apparantly, each sub level is made up of one or more orbitals and the orbitals in each sub level are always odd number. Each orbital can only have two electrons and those two electrons will have opposite spin.

Explanation:

Answer:

True

Explanation:

Line M passes through the points (-5, 9) and (-1,9).
12
10-
8
6
2
-12-10-8-6-4-22
2
6 8 10 12 X
6
-10
-12-
Which is true of line M?

Answers

Answer:

line m is vertical line with an undefined slopel line correct answer is 6 8 10 12 x

Which statement about the layers would they identify as correct?

Answers

is there supposed to be a picture or something with this

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground. What is the independent variable?

Answers

Answer:

Wing length

Explanation:

According to the given excerpt, independent variable is 'wing length' and dependent variable is 'amount of time it takes for helicopter to hit the floor'.

Independent variable refers to the variable that do not undergo any change or shift in the course of the experiment of research. The other variables are measured using the constant independent variable. The value obtained from the independent variable is independent. On the other and, the dependent variable witnesses change with respect to the independent variable.

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