What is the speed of an electromagnetic wave that has a frequency of 7.8x106
Hz?

Answer:

yes beacause our earth was rotating on its axix but they dont feel anybody because of a gravity that sorounded on earth

Answer:

Volume of HBr = V₂ =  7.5 mL

Explanation:

Given data:

Volume of NaOH =V₁= 25.0 mL

Molarity of NaOH =M₁= 0.150 M

Molarity of HBr =M₂= 0.5 M

Volume of HBr =V₂= ?

Solution:

M₁V₁    =      M₂V₂

0.150 M ×25.0 mL = 0.5 M×V₂

V₂ = 0.150 M ×25.0 mL  / 0.5 M

V₂ = 3.75 M.mL /0.5 M

V₂ =  7.5 mL

Answer:

SOURCES OF GAMMA RAYS

Explanation:

They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes.

Hope This Helps * I Used My Science Book To Answer This

Answer:

b

Explanation:

The type of wave shown is a longitudinal wave.

The correct option is B).

Longitudinal waves are those waves in which the vibrations of the waves move parallel to the direction of the wave.

The displacement of the medium is in the opposite direction of the wave propagation.

The three types of longitudinal waves are:

Thus, the wave shown is B) Longitudinal Wave.

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Answer:

polar

Explanation:

Answer:

The picture on the right with more circles inside of it is more dense

Explanation:

Answer: Time needed: 2.5 s

Distance covered: 31.3 m

Explanation:

I'll start with the distance covered while decelerating. Since you know that the initial speed of the car is 15.0 m/s, and that its final speed must by 10.0 m/s, you can use the known acceleration to determine the distance covered by

on one side of the equation and solve by plugging your values

To get the time needed to reach this speed, i.e. 10.0 m/s, you can use the following equation

Explanation:

Answer: Molar mass of CUSO4 5H2O = 436.17861 g/mol.

Explanation: Convert grams CUSO4 5H2O to moles or moles CUSO4 5H2O to grams. Molecular weight calculation: 12.0107 + 238.02891 + 32.065 + 15.9994*4 + 5*(1.00794*2 + 15.9994) ›› Percent composition by element.

Cation is the postively charged unit which is formed by the transfer of one or more electrons. It is attracted towards cathode thus it is called the CATION.

Ionic bond is the type of bond which is formed between the positive and negative ions. It is mostly formed between the Metals (i.e. group 1 and 2) and Non metals (i.e. mostly group 7). The positive charge on metal is due to the loosing of electron and negative charge on non metal is due to accepting the electron.

A molecular ion is a covalently bonded set of two or more atoms, that can be considered to behave as a single unit, it also has a charge on it.

Conductivity is more in liquid than in solid because the conductivity is flow of electron and the movement is less in solid than liquids thus the solid has less conductivity. The liquid has more movement of molecules due to which there is more conductivity.

Formula unit is a emperical formula used to express the ions in ionic compounds. It is the least whole number ratio of the ions present in the ionic compound.

Crystal lattice is the arrangement of atoms, molecules, or ions of a crystal in the form of a three dimensional space lattice.

Anion is the negative charged because It receives one electron from the cations thus becomes negatively charged entity. It is attracted towards the positive anode thus it is called anion.

Ionic bond do not form molecules, They form the ions.

One type of bonding i.e. ionic bonding is formed by the attraction between the positive and negative ions.

It is the amount of energy required to change the state of matter.

Answer:

It creates a rainbow

Explanation:

Cause of the reflectiveness of the water it could possibly form another light but more colorful. you can see how it works when its becomes summer, get a water hose and just let it flow. you'll see a miniature rainbow.

Answer:

NO

Explanation:

Barium cannot ionically bond with Kalium. Kalium is the Latin name for potassium.

Both Barium and potassium are metals. Metals and Metals do not combine to form ionic compounds. Only metals and non-metals form this bond type.

Answer:

liquid

Explanation:

Answer:

BeCL2 .1st column 2nd column 3rd column

1. beryllium 2.chloride. 3.beryllium

chloride

I think there is mistake of chemical this is Na2SO4

Na2SO4-----column 1. column 2

1.disodium 2.sulfate

decahydrate

column 3

3.disodium sulfate decahydrate

Explanation:

this is my answer

Answer:

nose

Explanation:

Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the wavelength of light is 2.41×10⁻⁷m.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.

There is a relation between frequency of wave, and wavelength of wave

Mathematically,

ν=c÷λ

where,

ν=frequency of light=1.24 x10¹⁵s⁻¹

c is speed of light that is 3×10⁸m/s

λ is the wavelength of light=?

Substituting all the values

1.24 x10¹⁵s⁻¹=3×10⁸m/s÷λ

λ= 2.41×10⁻⁷m

Therefore, the wavelength of light is 2.41×10⁻⁷m.

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Answer:

The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

Explanation:

Answer:

The EM ( electromagnetic) spectrum is generally divided into seven region ,in order of decreasing wave length and increasing energy and frequency.The common designations are:

1. Radio waves

2. Microwave

3. Infrared (IR).

4. Visible light.

5. Ultraviolet (UV).

6. X-rays.

7. Gamma rays.

Answer:

A- SImilar to both copper and oxygen

Explanation:

If copper and oxygen react to form copper oxide, a compound of both Copper and Oxygen, they most likely have traits from both elements, therefore its A

Answer:

Energy from different sources leads to different types of rocks.

Explanation: Energy inside Earth melts rock into liquid rock, but energy from the sun causes rock to weather into different types of rock.

Rocks are formed in earth by the deposition of minerals and decomposition of massive tectonic plates by the hot magma which is melted by the heat energy radiated from sun.

There are broadly three different types of rocks, namely sedimentary rocks, igneous rocks and metamorphic rocks . They are classified based on their formation and composition.

The magma that the molten mineral fluid inside the earth crest melts under heat radiated from sun and this hotter fluid flows results in movement of tectonic plates and decomposition at some places.

Therefore, the heat energy and resultant convection current leads the tectonic plate boundaries and formation of different kinds of rocks which are stimulated by the action of air and water.

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Answer:

False

Explanation:

The mole ratio compares the coefficient of compounds reacting and giving products in a chemical reaction.

They are used for converting and showing relationship between reactants and products in a chemical reaction.

 For example;

       2A  →  B + C

the mole ratio is read as;

    2 mole of A produces 1 mole of B and 1 mole of C

Answer:

sun and ocean. I had this last week

Answer:

ammonia is a base

hope it helps

Answer:

D. Ammonia

hope it helps

Answer:

Explanation:

The answer is principle of original lateral

Continuity. Hope this helps

Answer:

8.5 moles of Al₂O₃ will formed

Explanation:

Given data:

Number of moles of Al = 17 mol

Number of moles of Al₂O₃ formed = ?

Solution:

Chemical equation:

4Al  +  3O₂     →     2Al₂O₃

Now we will compare the moles of Al₂O₃  with Al.

                  Al            :            Al₂O₃      

                   4            :              2

                   17           :            2/4×17 = 8.5 mol

8.5 moles of Al₂O₃ will formed.    

Answer:

The purpose of mitosis is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are usually partitioned into two new daughter cells.

Explanation:

Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.

Answer:

Brass

Explanation:

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

Answer:

7.5 moles of CaBr2 are produced

Explanation:

Based on the equation:

2AlBr3 + 3CaO → Al2O3 + 3CaBr2

2 moles of AlBr3 produce 3 moles of CaBr2 if CaO is in excess.

Using this ratio: 2 moles AlBr3 / 3 moles CaBr2. 5 moles of AlBr3 produce:

5 moles AlBr3 * (3 moles CaBr2 / 2 moles AlBr3) =

Answer:

A. 32.06 g/mol

Explanation:

The molar mass units are always g/mol

its 32.06 g/mol bro its letter A

Answer:

Explanation:

The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).

The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms. hope this helps...