What is the wavelength of a radio wave that has a frequency of 9.40 X 10^8Hz?
3.1

Answers

Answer 1
671nm

Explanation:
Wavelength relates to frequency as follows:
λ
=
v
f

in which
f
is the frequency,
v
is the speed of light, and
λ
is the wavelength.
Filling this in for the example:
v
=
3

10
8
m
s

f
=
4.47

10
14
H
z
=
4.47

10
14
s

1

λ
=
3

10
8
m
s
4.47

10
14
s

1
=
6.71

10

7
m

from m to nm is

10
9

So the wavelength is:
671
n
m
(red light).

Related Questions

a bottle of water contains 20 oz of water. 1oz is equal to 29.57 milliliters. determine how many millimeters are in the bottle of water

Answers

Answer:

591.471 MILLIMETERS

Explanation:

Formula  

for an approximate result, multiply the volume value by 29.574

29.574*20=591.471

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2.What two factors must be held constant for density to be a constant ratio?

Answers

Answer:

Temperature and Pressure

Explanation:

Temperature and pressure cause change in volume.

So any change in volume will alter the ratio of density as given by equation of density.

Density = mass/ volume

Change in volume will alter the ratio.

Kindly mark it branliest if the answer is little bit satisfying.

The two (2) factors which must be held constant for density to be a constant ratio are:

I. The temperature of a sample or physical substance.

II. The pressure around the sample or physical substance.

Density can be defined as mass all over the volume of of a sample or physical substance.

Basically, density is mass per unit volume of of a sample or physical substance.

Mathematically, the density of a of a sample or physical substance is given by the formula;

[tex]Density = \frac{Mass}{Volume}[/tex]

The density of a sample or physical substance is directly proportional to pressure and inversely proportional to temperature.

This ultimately implies that, an increase in pressure with temperature being constant would cause an increase in density and vice-versa.

Conversely, a decrease in temperature with pressure being constant would cause an increase in density and vice-versa.

In conclusion, a change in volume of a substance is caused by both temperature and pressure.

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true or False
sound needs a medium to travel​

Answers

Answer:

True or T

Explanation:

Is the correct answer please make me brainliest

Claim: An ecosystem can survive with only producers.


Do you agree or disagree with this claim? Explain your answer. Be sure to include evidence and reasoning.

Answers

Answer:

No.

Explanation:

The reason for this is if everything in an ecosystem was a producer there would be nothing consuming and soon the ecosystem would be overwhelmed by two many products and nothing to consume them. A healthy ecosystem is a balanced cycle that makes sure everything is working properly and everything benefits something else. A food chain of sort is often seen in a balances ecosystem to show how everything is useful and needed. So in answer if there were only producers an ecosystem wouldn't thrive at its full potential, if at all.

I hope this helped! Brainliest if it did? No pressure!

Have a great day! :D

how is an ionic compound made up of charged particles can be electrically neutral​

Answers

Answer:

Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.

Explanation:

which elements are designated as the alkali metals

Answers

Answer:

Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).

Explanation:

Six chemical elements in Group 1, the leftmost column in the periodic table.

Hope this helps!

a neutral atom of astatine would have how many electrons?

Answers

Answer

85

Explanation:

Astatine has an atomic number of 85.

This means it has 85 positively charged protons.

If it is neutral, it must have the same number of negatively  charged electrons, or 85

Using the periodic table, complete the ya me to describe each atom. Type in your answers.

Answers

Answer:

Explanation:

Using the periodic table, complete the table to describe each atom. Type in your answers. - 14514242.

what is the source of the carbon plants use to make organic molecules?

Answers

Answer:

Carbon dioxide serves as the source of carbon,

Explanation:

What does it mean when two solid objects take up different spaces?

They have different masses.
They have different volumes.
They have different temperatures.
They have different weights.

Answers

Answer:

I'm pretty sure it's they have different masses. I don't know though

Explanation:

Methane (CH4) is a gas that is found in small quantities in Earth’s atmosphere. Which type of bonds does methane have, and why does one carbon atom bond with four hydrogen atoms? In three to five sentences, explain your answer in terms of valence electrons and electronegativity.

Answers

For example, in methane (CH 4​start subscript, 4, end subscript), carbon forms covalent bonds with four hydrogen atoms. Each bond corresponds to a pair of shared electrons (one from carbon and one from hydrogen), giving carbon the eight electrons it needs for a full outer shell.

In methane, the covalent bond is present between one carbon and four hydrogen atoms.

What is methane?

Methane is the simplest form of saturated hydrocarbons. Methane is an odorless gas as well as a colorless gas. It has one carbon and four hydrogen atoms which is why methane is also called a tetrahedral molecule.

CH₄ is the chemical formula of methane and is a non-toxic but flammable gas. From the tetrahedral structure of methane, we can see that a carbon atom is bonded to four hydrogen atoms.

One molecule of methane contains four covalent bonds. Each covalent bond is formed between the carbon and one hydrogen atom. The formation of a covalent bond between carbon and hydrogen is due to the small electronegativity difference between carbon and hydrogen.

In this way, carbon completes its octet and hydrogen completes its duplet. Therefore, the covalent bond is formed between one carbon atom bond with four hydrogen atoms in methane.

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When a spoonful of salt is dissolved in a pan filled with water, the water is called the...

Select one:
a. solute.
b. solution.
c. solvate.
d. solvent.​

Answers

Answer:

water is called solvent

Answer:

Option d (solvent)

Explanation:

In salt solution, salt is the solute. A solvent is the substance that does the dissolving – it dissolves the solute. In salt solution, water is the solvent

Which is smaller 1.44 or 1.2544

Answers

Answer: 1.2544

Explanation:

if you look at the number 1 and 1 are the go to the next number 4 and 2 aren't so 1.44 is bigger while 1.2544 is smaller.

Answer:

1.2544

Explanation:

hi. i need help with this. i lack with this subject

Answers

Answer: It's the circulatory system

Explanation:

Drag each label to the correct location.
An element’s position in the periodic table provides information about its atomic structure. Use what you know about atomic structure to complete the table. Refer to the periodic table as needed.

Answers

the answers are below

Thực hiện chuỗi phản ứng sau: CaCO, CaO CaSO, SO₂ → K₂50₂

Answers

Answer:

nnhnhgnklhnhmkghklmfmg

Explanation:

cvgngh kcvl vl gkh kn hg

which molecule is oxidized in the photosynthetic reaction?

Answers

Answer:

Water

Explanation:

Water is oxidized in photosynthesis, which means it loses electrons, and carbon dioxide is reduced, meaning it gains electrons

What type of rock is in the reference image? How do you know?

Answers

Answer:

i think it's a sedimentary rock...

reason:- these are the only rocks containing fossils

Explanation:

brainliest plz

Which law specifically combines volume, pressure, and temperature only?
Charles's Law
Gay-Lussac's Law
Combined Gas Law
Ideal Gas Law

Answers

Answer:

Boyles law

Explanation:

I think that is combined gas law.

Mg + 2HCl ---> MgCl2 + H2
How many grams of MgCl2 would result from a reaction involving 24.31 g of Mg?​

Answers

assumed that all of the initial Mg had reacted, therefore the total amount of Mg had transferred into Mg2+ in MgCl2

Molar mass for Mg is 24.31 g/mole and MgCl2 is 95.21 g/mole

--> nMgCl2= nMg = 24.31 g ÷ 24.31 g/mole = 1 mole

--> so the mass of MgCl2 = 1 mole × 95.21 g/mole = 95.21 g

help asap ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Answers

Answer:

Option C

Explanation:

Something white solid forms means here is any salt reacted .And it has been reacted with any hydroxide or acid or another salt. And an undissolved solid product formed.which is white.

Its totally chemical change

Do you think the Clean Air Act was a good solution to the changing environment in England? Explain.

Answers

Americans breathe less pollution and face lower risks of premature death and other serious health effects. Environmental damage from air pollution is reduced. The value of Clean Air Act health benefits far exceeds the costs of reducing pollution. ... New plants and factories install modern pollution control technology.

The atomic number equals blank of blank electrons

Answers

Answer:

The atomic number equals number of protons and electrons

This is true when an atom is in neutral state.

for the following reaction: 1 CuO + 1 H2 --> 1 Cu +1H2O, what is the quantity of moles of H2O when there are 240 grams of CuO present?

Answers

Considering the reaction stoichiometry, the quantity of moles of H₂O produced is 3.02 moles.

The balanced reaction is:

CuO + H₂ → Cu + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:  

CuO= 1 moleH₂= 1 moleCu= 1 moleH₂O= 1 mole

The molar mass of the compounds present in the reaction is:

CuO= 79.55 g/moleH₂= 2 g/moleCu= 63.55 g/moleH₂O: 18 g/mole

Then, by reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of mass of each compound participate in the reaction:  

CuO= 1 mole× 79.55 g/mole= 79.55 gramsH₂= 1 mole× 2 g/mole= 2 gramsCu= 1 mole× 63.55 g/mole= 63.55 gramsH₂O: 1 mole× 18 g/mole= 18 grams

Then, it is possible to determine the moles of H₂O necessary by the following rule of three:  If by reaction stoichiometry 79.55 grams of CuO produces 1 mole of H₂O, 240 grams of CuO produces how many moles of H₂O?

[tex]molesofH_{2} O=\frac{240 grams of CuOx 1 mole ofH_{2} O }{79.55 grams of CuO}[/tex]

moles of H₂O= 3.02 moles

Finally, the quantity of moles of H₂O produced is 3.02 moles.

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The period of the vibrating string is 0.004 seconds. What is the frequency of the
standing wave?

Answers

Answer:4

Explanation:

A cube measuring 1cm x 1cm x 1cm is full of water, What is the mass of the water in the cube? (Water has a density of 1.0)

Answers

d= m/v

1.0=m/1cm^3

1.0×1cm^3=m

m=1kg/cm^3

Which statement best explains the difference between polar and nonpolar covalent bonds?(1 point)

Polar covalent bonds give/take electrons, while nonpolar covalent bonds share electrons.

Polar covalent bonds share electrons equally, while nonpolar covalent bonds share electrons unequally.

Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.

Polar covalent bonds share electrons, while nonpolar covalent bonds give/take electrons.

Answers

Covalent bonding can be defined as the sharing of electrons between two atoms.

The statement which best explains the difference between polar and nonpolar covalent bonds is "Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally"

We have:

Polar covalent bond is a chemical bond in which electrons are shared unequally or unevenly between two atoms.

Non-polar covalent bond is a chemical bond in which electrons are shared evenly or equally between two atoms.

Therefore, the statement which best explains the difference between polar and nonpolar covalent bonds is "Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally"

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A molecule is made up of more than one element ?

Answers

Answer:

Yes it is

Explanation:

How else do you think nitrogen or oxygen is made?

Which of the following is not a stage of the scientific method?
a. using a hypothesis to sell a new product
b. observing, collecting, and communicating data
c. formulating theories
d. formulating hypotheses

Answers

Answer:

Using a hypothesis to sell a new product.

If 5 J (joules) of electrical energy is used to power an iron, how many joules of heat and steam should it be transformed into?

Answers

Answer:

maybe 25 joules

Explanation:

please mark me as a brainlist

If 5 J (joules) of electrical energy is used to power an iron, 25 joules of heat and steam should it be transformed into.

What is energy?

Energy is referred to by scientists as the capacity for work. People have figured out how to transform energy from one form to another and then use it to accomplish tasks, making modern civilization possible.

Walking and bicycling, driving cars on roads and boats through water, cooking meals on stoves, making ice in freezers, lighting our homes and workplaces, producing goods, and sending astronauts into space all require the usage of energy.

Energy is capable of changing its forms. For instance, a person's body stores chemical energy from the food they consume until they may use it as kinetic energy when working or playing.

Therefore, If 5 J (joules) of electrical energy is used to power an iron, 25 joules of heat and steam should it be transformed into.

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