In FET colleges, there are six broad area of study: arts, business, education, engineering, management, and agricultural.
arts - study of musicCommerce includes marketing and bookkeeping.Education: Education and growthConstruction engineeringPrimary agricultural productionAdministration - HospitalityInstitutions offering Further education and Training (FET) are those that offer instruction and training to students in grades 10 through 12.
It also includes training that is efficient and career-focused that is provided by technical, community, and private universities.
arts - study of musicCommerce includes marketing and bookkeeping.Education: Education and growthConstruction engineeringMedical SciencesPrimary agricultural productionAdministration - HospitalityThe development of the nation's economy depends heavily on the education sector. The country would be more literate and educated if the kids are well-educated.To know more about FET
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A child drops a stone into a well. The water
is exactly 20.0 meters below the child's
hand. How long will it take the stone to hit
the water?
Because the stone will accelerate owing to gravity after it is dropped at a rate of 9.8 metres per second squared, you may use physics to compute the depth of the ocean by applying the distance formula: D = v0 t + 1/2 a*t2.
What force is at work when things fall?the gravitational force
In addition, gravity is pulling the thing downward as it falls. Gravity is an imbalanced force at the beginning of a descent. As a result, the thing
The statute addresses the issue of bodies falling. According to the rule of parabolic fall, a falling body's distance travelled is squarely inversely related to the amount of time it takes to descend. As an illustration, a stone that is dropped twice as long as another stone will fall four times as far.
The force of gravity accelerates items as they descend to the ground.
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TRUE or FALSE: As temperature increases, the speed of sound decreases.
Answer:
TRUE
Explanation:
Answer:
True
Explanation:
because high energy molecules carry the sound more quickly
The half-life of radioactive chromium-51 is 28 days. If a sample of chromium-51 has a mass of 12.0 μg , calculate the number of days it will take for the mass to be reduced to 3.00 μg .
It takes a total of 56 days for the mass of the chromium-51 to be reduced from 12.0 μg to 3.00 μg.
What is the half life?The half life of a radioactive sample refers to the time taken for only half of the radioactive substance that is originally present to decay. Now we know that radioactivity has to do with the spontaneous disintegration of a substance. This implies that the amount of the substance would continue to decreases as the time goes on.
Having said this, let us consider the question as we have it above. We all know that; the half-life of radioactive chromium-51 is 28 days then the sample of chromium-51 has a mass of 12.0 μg. We are to now obtain the number of days it will take for the mass to be reduced to 3.00 μg .
Hence;
t1/2 = 28 days
N = 3.00 μg
No = 12.0 μg
t = ?
Using;
N/No = (1/2)^t/t1/2
3/12 = (1/2)^t/28
1/4 = (1/2)^t/28
(1/2)^2 = (1/2)^t/28
2 = t/28
t = 56 days
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Calculate the volume of concentrated aqueous HCI, having a density of 1.188 g/ml
and containing 38% HCI by weight, needed to prepare 2 liters of a 0.20 N hydrochloric acid solution.
According to the given statement the volume of concentrated aqueous HCI is V (ml) = 32.3 ml
What use do hydrochloric acids ?In the food, textile, metal, and rubber sectors, Hydrochloric acid (HCl) is frequently employed as a bleaching agent to neutralize alkaline substances. It is neutralized when released into the environment, and it immediately hydrolyzes when it comes into contact with water.
Briefing:The molecular weight of HCl = 36.461
The valence (n) of hydrogen = 1
Equation 1:
Weight of HCl needed = 0.20 eq/L * 2.0 L * 36.461 g/eq
Rewriting the equation:
Weight of HCl needed
= 0.20 eq /1000ml * 2000 ml * 36.461 grams/eq
Weight = 14.5844 grams
The weight of HCl is related its current diluted volume by the equation:
Equation 2:
Weight =V(ml) * 1.188grams * 0.38/ml
Combining eq 1 and eq 2 us eq 3
Equation 3:
14.5844 grams
=V (ml) * 1.188 grams * 0.38/millilitres
Solving for V (ml):
V (ml)
= 14.5844 grams * ml/1.188 grams * 0.38
Rounding off and Cancelling out units,
V (ml) = 32.3 ml
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If the temperature is lowered on a ______________________________, a condensate will be produced.
If the temperature is lowered to a dew point, condensate will be produced.
While the air temperature drops underneath its dew factor, excess moisture can be released in the form of condensation. Condensation problems are maximumly probable to occur in climates in which temperatures regularly dip to 35°F or colder over a prolonged time period.
The dew factor is the temperature to which air needs to be cooled to emerge as saturated with water vapor, assuming steady air stress and water content. while cooled beneath the dew point, moisture potential is reduced and airborne water vapor will condense to form liquid water known as dew. Both the air is cooled to its dew point or it becomes so saturated with water vapor that it can't maintain any extra water. The dew factor is the temperature at which condensation occurs
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What are the products of sodium bicarbonate and citric acid reacting? Write the balanced equation for the reaction.
Answer:
Equation - citric acid & sodium bicarbonate ACID + CARBONATE --> SALT + WATER + CARBON DIOXIDE CITRIC ACID + SODIUM BICARBONATE ----> SODIUM CITRATE + WATER + CARBON DIOXIDE In this reaction, the sodium BICARBONATE is mixed with citric acid.
Explanation:
Plutonium-238 undergoes alpha decay as shown:
238 PuX+He
94
Enter the appropriate values for A and Z and the chemical
symbol for X.
A:
Z:
X:
0
Alpha decay of Plutonium-238 into Uranium-234. Therefore, A = 234, Z = 92, X = U
A radioactive process known as "alpha decay" releases a particle made up of two protons and two neutrons when an unstable nucleus transforms to another element. The helium nucleus that is being expelled is known as an alpha particle. Positive charge and a substantial mass characterize alpha particles.
An atomic nucleus emits an alpha particle (the helium nucleus), which causes it to change or "decay" into another atomic nucleus with a mass number that is decreased by four and the atomic number is reduced by two. This process is known as alpha decay or α-decay.
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A 50.00mL sample of solution containing Fe^2+ ions is titrated with a 0.0216 M KMnO4 solution. It required 20.62mL of KMnO4 solution to oxidize all the Fe^2+ ions to Fe^3+ ions by reaction.
MnO4- (aq) + Fe^2+ (aq) ------> Mn^2+ (aq) + Fe^3+ (aq) (unbalanced)
acidic
a.) What was the concentration of Fe^2+ ions in the sample solution?
b.) What volume of 0.0150 M K2Cr2O7 solution would it take to do the same titration? The reaction is
Cr2O7^2- (aq) + Fe^2+ (aq) ---------> Cr^3+ (aq) + Fe^3+ (aq) (unbalanced)
acidic
The concentration of Fe[tex]^+2[/tex] ions is 0.0088 M, and 29.33 L of K₂Cr₂O₇ is required for the titration.
How to calculate concentration of solution?Concentration of a titrand when volume is given can be calculated as,
M₁V₁=M₂V₂
Likewise volume of titrand can also be calculated by the same formula.
In the given problem, concentration of KMnO₄ =0.0216 M and it's volume=20.62 ml or 0.0206 L, volume of Fe[tex]^+2[/tex] ions=50 ml or 0.05 L
substituting the values in the formula,
M₁=0.0216×0.0206/0.05=0.0088 M.
For calculating the volume of potassium dichromate using the same formula ,
V₂=0.0088×0.05/0.015=0.02933 ml or 29.33 L.
Thus, the concentration of iron(II) ions in sample is 0.0088 M and 29.33 L of 0.015 M potassium dichromate is used for doing the same titration.
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< Question 17 of 35 >
Macmillan Learning
Name the alkene. Be sure to indicate stereochemistry and use hyphens (-) not endashes (-).
H3C-CH₂
CH3
H
c=c
H
The alkene is named:
The name of the given chemical in IUPAC is 3-5-ethyl5-3-methylheptane.
What is a cyclic alkene?A cycloalkene, also known as a cycloolefin, is a form of alkene hydrocarbon that lacks the aromatic quality and possesses a closed ring of carbon atoms as well as one or more double bonds.
a functional group with a carbon-carbon double bond as its defining feature. When the carbon-carbon double bond is completely enclosed by another functional group, such as a benzene ring, we do not refer to the more intricate functional group as an alkene. basic alkene structure
Alkenes are a popular class of hydrocarbons that are present in crude oil. At least one carbon-carbon double bond exists in this family. The chemistry of the family's compounds is significantly altered by this double bond.
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I need these 3 questions answered with work shown :( I’m so bad at chem
Explanation:
3.)The given values:
Mass, m = 100.0 g
Density, d = 1.59 g/mL
As we know,
→ D = m/v
By substituting the given values, we get
v = m/d = 100/1.59
v = 62.89 ≈ 63mL
4.)The experiment makes use of Archimedes' principle, where the volume of a liquid displaced by an object, is equal to the volume of said object.
Thus, the volume displaced by the object is:
46.9 mL - 25.0 mL = 21.9 mL
The volume of the object is 18.9 mL
Density is equal to the mass divided by the volume, so:
D = m/V = 53.5 g/21.9 mL
D = 2.44 g/mL
5.)For water,
ρ density = 1.0 g/mL
v = 425 mL
d = m/v
m = d × v
m = 1 × 425 = 425 g
Which relationship is NOT correct?
1 mL = 1 cm3
1000 kg = 1 g
100 cm = 1 m
1 L = 1000 mL
Answer:
1000 kg = 1 g
Explanation:
1000 g = 1 kg
please make my answer as brainelist
Six swordfish were swimming in the sea.
Alliteration
Allusion
Assonance
Hyperbole
Metaphor
Onomatopoeia
Oxymoron
Personification
Simil
Answer:
Alliteration
Hope this helps :)
Hope this helps :)Explanation below.
Explanation:
The word S is repeated many times in the sentence, so alliteration would be the correct answer.
Type a response
*REQ
How many protons are in the nucleus of an atom with an atomic number of 15?
Type a response
You have responded to 0 of 4 questions.
Submit
Answer:
15
Explanation:
the proton and atomic number are the same hence it remains 15
HOW DOES WALTER WHITE SLEEP AT NIGHT
Answer:
Since Walter can alter time and space he doesn't have the kind of place to take a nap or buy a cap for his dog zap
Explanation:
Answer:
Breaking Bad
Explanation:
walt
Please help!
See attached photo
Answer:
melt;freeze
Explanation:
and I don't have an explanation
the energy needed to heat 5.95 g of water from 5.5 ∘C to 64.9 ∘C
The energy needed to heat 5.95 g of water is 1484.406 J.
When work is done and heat and light are produced, energy is the quantitative quality that is transferred to the body or to the physical system.
The water is heated from 5.5° C to 64.9° C.
The mass of the water is 5.95 grams.
The specific heat of water is 4.2 J g⁻¹ C⁻¹ .
Now, the water is heated from:
T₁ = 5.5° C to T₂ = 64.9° C
Therefore, ΔT = T₂ - T₁ = 64.9 - 5.5 = 59.4° C
The heat energy is given as:
Q = m × C × ΔT
Q = (5.95 g ) × ( 4.2 J g⁻¹ C⁻¹ ) × ( 59.4° C )
Q = 1484.406 J
The energy released on heating 5.95 g of water from 5.5° C to 64.9° C is 1484.406 J.
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PLEASE ANSWER I REALLY NEED IT ITS DUE IN AN HOUR FOR A CROSSWORD
(what) include Filtration,Chromatography, and Distillation.
Filtration simply refers to a method of septation technique which is used to separate insoluble solid from liquid.
For example, the suspension of chalk dust in water can be bestseparated using filtration.
Chromatography is a method of separation technique used to separate the mixture of complex substances such as coloured pigments or components. It can also be used to separate substances which are colourless.Distillation is used to separate mixtures of different miscible liquids.All these explained above are various types of separation techniques in chemistry.
Insoluble solids are solids which cannot dissolve in water.
Miscible liquids are liquid which combine together to form a single liquid.
What is separation technique?Separation technique refers to the process of separating the components of mixtures.
So therefore, filtration simply refers to a method of septation technique which is used to separate insoluble solid from liquid.
Complete question:
Explain what is meant by filtration, chromatography and distillation.
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In a fission reaction, uranium-235 bombarded with a neutron produces
strontium-94, another small nucleus, and three neutrons.
Enter the complete equation for the fission reaction.
Express your answer as a nuclear equation.
In a fission reaction, uranium-235 bombarded with a neutron produce strontium - 94 , another nucleus and three neutrons.the nuclear equation is :
[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]
uranium-235 bombarded with neutrons produce strontium-94 , another small nucleus and 3 neutrons.
[tex]_{92} U^{235}[/tex] + [tex]^{1} n_{0}[/tex] ------> [tex]^{94} Sr_{38}[/tex] + x + [tex]3^{1} n_{0}[/tex] ( x i unknown nucleus)
in this, the atomic no. and atomic mass in both the side should be same
atomic mass => 235 + 1 = 94 + 3 = 139
atomic no. 92 = 38 => 92 - 38 = 54 ( this is xenon - 139 , the unknown nucleus)
the balance nuclear equation equation is
[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]
Therefore,In a fission reaction, uranium-235 bombarded with a neutron produce strontium - 94 , another nucleus and three neutrons.the nuclear equation is :
[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]
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The grams of fat in one avocado that has 375 kcal, 17g of carbohydrates, and 3g of protein?
Answer: Six grams
Explanation: The avocado has a high-fat content, but it is only half the fat content of other fruits and vegetables. One avocado has about six grams of fat.
what is the cation and the anion of VCl3?
The cation is [tex]V^3^+[/tex] and the anion is [tex]Cl^-[/tex] in [tex]VCl_3[/tex].
An ionic compound is a chemical compound made up of charged ions called cations and anions that are held together by electrostatic forces.
Cations are elements with one or more positive charges because they have more number of protons than electrons.
Anions are elements with one or more negative charges because they have more number of electrons than protons.
An ion which has lost electrons and now has a positive net charge is said to be a cation. An atom's cation is smaller than the neutral atom because electrons are taken out to produce a cation.
An ion which has acquired electrons and now has a negative net charge is called an anion. The anion of an atom is larger than the neutral atom because electrons have been added to produce it.
In Vanadium (III) chloride, vanadium gives 3 electrons and become +3 charge and chlorine gains 1 electron and become -1 charge. Since 3 electrons are given by vanadium, 3 chlorine atoms are bonded, thus the compound is [tex]VCl_3[/tex].
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What qualities do you think are important for a scientist to have? Give an example of how one of these qualities is shown in your own approach to your schoolwork. Answer in two to three paragraphs. (10 points) Think about what a scientist does in order to obtain reliable information. Do you do any of these things?
Important qualities for scientists to have are curiosity, patience, creativity, persistence, communication, and intelligence.
Hard effort, intelligence, and the ability to effectively manage your time and tasks are, in my opinion, some crucial characteristics for a scientist to possess. Being a scientist will need you to spend a lot of time in a lab or out in nature. It takes skill to meticulously record vital and fascinating information. Additionally, you'll need to be diligent because it's crucial for scientists to put in a lot of effort and produce reliable results.
I believe that hard work is a quality that comes through in my academic performance. I always give my tasks my best effort. I make a consistent effort to get ahead and complete my task on schedule. I have to work less as I work harder. I keep myself busy, which causes me to become less busy.
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Suppose a popular FM radio station broadcasts radio waves with a frequency of 90. MHz. Calculate the wavelength of these radio waves.
The wavelength of the radio waves is 3.33 m
What is wavelength?This is simply defined as the distance between two successive crests or trough
Relationships between frequency, wavelength and velocityThe velocity, frequency and wavelength of a wave are related according to the following equation
Velocity (v) = wavelength (λ) × frequency (f)
v = λf
How to determine the wavelengthThe wavelength of the radio wave can be obtained as illustrated below:
Frequency of radio wave (f) = 90 MHz = 90×10⁶ Hz Velocity of radio wave (v) = 3×10⁸ m/sWavelength of radio wave (λ) =?λ = v /f
λ = 3×10⁸ / 90×10⁶
λ = 3.33 m
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If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in
kilometers per liter? (1 L = 1.06 qt)
The rating in kilometers per liter is 12.75 kilometer per liter
How to convert 30 miles per gallon to kilometer per gallon1 mile per gallon = 1.60934 Kilometer per gallon
Therefore,
30 miles per gallon = 30 × 1.60934
30 miles per gallon = 48.2802 kilometer per gallon
How to convert 48.2802 kilometer per gallon to kilometer per liter1 kilometer per gallon = 0.264172 kilometer per liter
Therefore,
48.2802 kilometer per gallon = 48.2802 × 0.264172
48.2802 kilometer per gallon = 12.75 kilometer per liter
Thus, the rating in kilometer per liter is 12.75 kilometer per liter
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he picture above shows two beakers. Each beaker has an acid in it. Identify each beaker as either a strong or weak acid. Explain how you know the acid is strong or weak.
1 point - Each beaker is correctly identified as a strong or weak acid. (1/2 point for each right answer.)
1 point - You have explained how you know each beaker is a strong or weak acid.
From the images, hydrochloric acid is a strong acid because it dissociates completely in water to produce hydrogen and chloride ions.
What is an acid?Given the Arrhenius definition of an acid, an acid is any substance that produces hydrogen ion in solution as its only positive ion when dissolved in solution. We know that that acids could be strong or weak. Acids could also be organic or mineral. In this later classification, acetic acid is an organic acid while hydrochloric acid is a mineral acid.
With is said, let us now examine each of the beakers. We can see from each of the beakers that the beaker that contains the hydrochloric acid has the acid molecule completely dissociated to hydrogen ions and chloride ions.
In the other beaker that contains the acetic acids, there are only a few of the acetic acid molecules that have dissociated into hydrogen ion and the acetate ion.
As such, it is clear that hydrochloric acid is a strong acid because it dissociates completely in water to produce hydrogen and chloride ions.
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4. Consider Limitations Students were given the following sets of items and asked, for each set, to identify which item had greater thermal energy. For which set would this task be most difficult? Explain. Set 1: 5 g of iron at 45°C and 10 g of iron at 45 °C Set 2: 10 g of water at 30°C and 10 g of water at 50°℃ Set 3: 32 g of copper at 50°C and 32 g of nickel at 50°C
Set 1 is difficult.
The formula for thermal energy is given as:
Q = mcΔT
Where m is the mass of the item, c is specific heat capacity and ΔT is the change in temperature when the item is heated.
For Set 1:
5 g of iron at 45°C and 10 g of iron at 45 °C
In this case, the mass of iron is different at the same temperature. Since there is no change in temperature hence the metal is not heated. Another reason is that the mass of iron is different in this case. Hence, this set will be difficult to find thermal energy.
Set 2:
10 g of water at 30°C and 10 g of water at 50° C
The mass of water at both temperatures is the same, and the water is heated from 30°C to 50° C The thermal energy can be easily calculated using the formula Q = mcΔT.
Set 3:
2 g of copper at 50°C and 32 g of nickel at 50°C
The mass of copper remains unchanged, also the temperature doesn't change. Since copper is not heated and the temperature remains constant. Hence the thermal energy will be zero.
Therefore, Set 1 will be the most difficult to find the thermal energy.
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(a) 1.42 light-years to miles (a light-year is an astronomical measure of distance—the distance traveled by light in a year, or 365 days; the speed of light is 3.00 × 108 m/s).
The value in mile is 8.35 * 10^12 miles.
What is conversion?It is often important to be able to convert values from one unit to another. This has always helped to make mathematical and physical computations much easier.
The conversion factor is often used to convert from one unit to another. It serves as bridge that would enable us to be able to convert quantities. The conversion factor has to be dimensionally correct.
Let us now convert 1.42 light-years to miles;
1.42 light years * 3.00 × 108 m/1 s * 1 mi/1609 m * 3600 s/1 hr * 24 hrs/1 day * 365 days/1 year
= 8.35 * 10^12 miles
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write a complete ionic equation for the following molecular equation. 2 K3PO4
+ 3 FeBr2
-
6 KBr
+ Fe3(PO4)2
A chemical equation known as an ionic equation expresses the electrolytes in an aqueous solution as dissociated ions. The net ionic equation will be:
3 Fe²⁺(aq)+2PO₄³⁻(aq)⇒Fe₃(PO₄)₂ (s).
What is an Ionic equation?Chemical equations known as ionic equations solely display the ions involved in a chemical reaction. Or, the ions that combine in a solution to react and create new compounds. Those ions that don't take part are referred to as spectator ions.
Ionic equations are used to simplify chemical equations by getting rid of species that aren't changing. This is highly helpful, especially when dealing with redox processes, which are challenging enough without the interference of spectator ions.
According to the question,
PO₄³⁻ phosphate of Na⁺, K⁺, Li⁺, NH₄⁺ group 1 and NH₄⁺ Soluble.
Other than that are insoluble so, Fe₃(PO₄)₂ is soluble.
Molecular equation is :
2k₃PO₄(aq)+3FeBr₂(aq)⇒6 KBr(aq)+Fe₃(PO₄)₂ (s)
So, complete ionic equation will be :
6 K⁺(aq)+2PO₄³⁻(aq)+3Fe²⁺(aq)+6Br⁻(aq)⇒6K⁺(aq)+6Br⁻(aq)+Fe₃(PO₄)₂ (s)
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An metal rod weighing 123 g with a temperature of 100.°C is placed in 75 mL of water at 25.0 °C. If the final
temperature of the metal and water is 29.0 °C, what is the specific heat capacity of the metal? (Assume that
the density of water is 1.0 g/mL and specific heat capacity of water is 4.184 J/g°C.)
O 0.23 J/gºC
O 0.14 J/gºC
O 3.6 J/gºC
O 1.6 J/gºC
The specific heat capacity of the metal rod weighing 123g is 0.14 J/gºC (option B).
How to calculate specific heat capacity?The specific heat capacity of a metal substance can be calculated using the following formula:
Q = mc∆T
Where;
Q = heat absorbed or releasedm = mass of substancec = specific heat capacity∆T = change in temperatureHowever, in a calorimeter, the metal and water relationship is given as follows:
Q (water) = - Q (metal)
mc∆T (water) = - mc∆T (metal)
Mass of water = density × volume
Mass of water = 1g/mL × 75mL = 75g
75 × 4.184 × {29°C - 25°C} = - {123 × c × (29 - 100)}
1255.2 = 8733c
c = 1255.2/8733
c = 0.144J/g°C
Therefore, the specific heat capacity of the metal rod weighing 123g is 0.14 J/gºC.
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Proton moving at 3.97 X 10 8 m/s (mass of a proton = 1.673 x 10 -27 kg) what is its wavelength in nm??
The wavelength of the proton is9.9 * 10⁻⁷ nm.
What is the wavelength of the proton?The wavelength of a particle or wave is the distance between successive point in phase in the particle or the wave.
It can be said to be distance between successive crests or troughs.
The wavelength of a moving particle is given by the De Broglie's equation as follows:
λ = h/mvwhere h is Planck's constant = 6.63×10⁻³⁴ Js
m = mass of particle = 1.673 x 10⁻²⁷ kg
v is velocity of proton = 3.97 x 10⁸ m/s
λ = 6.63×10⁻³⁴/1.673 x 10⁻²⁷ * 3.97 x 10⁸
λ = 9.9 * 10⁻⁷ nm
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A hot air balloon gondola is suspended below a cloth envelope containing 4.213x10^6 Liters of hot air. How many millimeters of hot air is this
The volume of 4.213 x 10⁶ liters of hot air in milliliters is 4.213 x 10⁹ mL of hot air.
What is the volume of the hot air in milliliters?The volume of a substance is the amount of space that substance occupies.
The units for measuring volume of substances includes liters, milliliters, and cm³, dm³.
The milliliter is a smaller unit of the liter.
1 liter = 1000 milliliters
To convert 4.213 x 10⁶ liters of hot air to milliliters, the values is multiplied by 1000.
4.213 x 10⁶ liters of hot air to milliliters = 4.213 x 10⁶ * 1000 mL/L
4.213 x 10⁶ liters of hot air to milliliters = 4.213 x 10⁹ mL of hot air.
In conclusion, to convert volume in liters to milliliters, the value in liters is multiplied by 1000.
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