Based on what you have read about wind turbines and dams, how does a generator work? A loop of ______ spins in a ______ field, producing ______ current.
Answer:
Wire
Magnetic
Electric
Explanation:
The generator works on the principle of converting mechanical energy into electrical energy.
For example in a wind turbine generator, the mechanical energy is the wind that pushes the blades of the turbine directly that leads to conversion of this it's linear motion to the rotary motion required to make rotor of the generator to spin. Finally, the harder the wind pushes, the more the mechanical energy applied and consequently, the more electrical energy can be generated.
Now, all generators work because of the effect of the magnetic field moving past an electrical coil.
Thus, the movement of a magnet across a single loop of wire produces a voltage that is induced within the wire loop as a result of the magnetic field produced by the magnet.
As a voltage is induced across the wire loop, electrons begin to flow around the loop thereby generating electric current.
You are on vacation with your family up in the mountains. Your friend is on vacation near the equator by the ocean. Explain which climate will experience the most precipitation.
A.) Both climates will have the same amount of precipitation.
B.)The ocean climate will have less precipitation because it is close to sea level.
C.)The climate around the equator will have more precipitation because it is very hot.
D.)The mountain climate will have more precipitation because it increases with elevation.
Answer:
I gonna go wit number C
Explanation:
Answer: C
Explanation:
SnO2 + 2H2 → Sn + 2H2O Tin oxide reacts with hydrogen to produce tin and water. What is the limiting reactant
Answer:
You can't tell with the information provided.
Explanation:
Since this is a balanced chemical equation, there is no limiting reactant. Can you tell us how much of the reactants you began with?
are you doing work when u are cleaning your teeth
Answer: Yes you are.
Explanation:
A deep teeth cleaning can remove a buildup of plaque and tartar on your teeth, reducing gum inflammation and improving gum health. Plaque is a sticky film that forms on teeth. It contains bacteria and develops when food particles mix with saliva. You can remove plaque, which collects on teeth daily, by brushing your teeth.
A sample of a compound containing only carbon and hydrogen atoms is completely combusted, producing
11.0 g of CO, and 4.5 g of H,O.
Which of the following is the empirical formula of the compound?
Choose 1 answers
CH
B
CH
CH3
C2H
The empirical formula will be C2H.
What is empirical formula?The easiest whole-number proportion of the numerous elements in a molecule is represented by an empirical formula.
Calculation of empirical formula
Given data:
C = 11.0 g
H = 4.5 g
The atomic mass of C = 12
The atomic mass of H = 1
Now, divide the mass by atomic mass.
1) For carbon atom= 11 / 12 =0.91
2) For hydrogen atom = 4.5 / 1=4.5
Now, divide the lowest term by the obtaining whole number.
1) For carbon atom = 11/ 0.91 = 12
2) For hydrogen atom = 4.5/0.91 = 5
Therefore, the empirical formula will be C2H,
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Below are is a before and after particle diagram that shows the process of
condensation. Choose the statement below that best describes how the
particles changed in their arrangement during this process.
Attempt d
2 Minute
Before: Gas 100 C
After: Liquid 30 C
Answer:
It must first melt to become a liquid and then evaporate to become a gas
Explanation:
Each element has its own set of characteristic absorption lines because Each element has its own set of characteristic absorption lines because the temperature of each element can varies. electron energy levels differ for each element. elements can exist in different forms of matter. absorption lines depend upon the speed of the object. each element has a different mass.
Answer:
Question is unclear
Explanation:
Answer:
what ru asking dear??? write question properly ??? Write the correct question from next time.
What term is used to define when a substance reacts quickly with oxygen to produce light and heat?
A. rusting
B. sublimation
C. precipitation
D. burning
Answer:
I think it's a
Explanation:
not sure hssjkskaakakskksskksqoqkakskzksjsj
Answer: The answer is, D) Burning.
Explanation: Some moderator removed my last answer because someone reported it.
Question 7 (1 point
What is the general pattern seen in the periodic table that helps a person quickly identify if an element is a nonmetal? (Where are nonmetals
generally found on the periodic table?)
Answer:
the elements to the right including hydrogen
Explanation:
as you know non-metal tend to gain eletrons
basically group 5, 6, and 7 are nonmetals
group 1, 2, and 3 are metals and group 4 are transitional metals so be careful with group 4
Will award brainliest! Between which two ionization energies would you expect to see the biggest jump for calcium? A. 11-12
B. 12-13
C. 13-14
D. 14-15
answer:lettter B that is answer
What is the formula for cr2+ no2-
Answer:
Cr (NO2) 2
Explanation:
................
given the equation, N2H4 + N2O4 -> N2 + H2O, how many moles of N2)=O4 are needed to react with 3.5 moles of N2H4
Answer:
Explanation:
I think you mean
2N2H4 + N2O4 ==> 3 N2 + 4H2O
The equation says that for Every mol of N2O4, you need 2 moles of N2H4.
1/2 = x/3,5 Multiply both sides by 3.5
3.5*1 / 2 = x
1.75 = x
Therefore you need 1.75 moles N2O4 are needed for 3.5 moles of N2H4
State TWO ways in which stress could impact negatively on student's
performance at College or university.
Two ways that stress could negatively impact a students performance is by causing them to procrastinate. When you're stressed, you tend to keep putting things off because you "just can't deal with it" at the moment. This could cause the student to turn in their assignments late (or not at all) and cause their grades to drop. Additionally, when you're stressed, it's harder to fall asleep, and once you are, you don't sleep as well. Sleep deprivation can greatly affect a student's in class performance by causing them to fall asleep in class, or not pay attention as well.
Which of the following compounds, sodium bicarbonate or water, should be used to extinguish a grease fire?
Answer:Douse the fire with baking soda: The chemical compound sodium bicarbonate, commonly called baking soda, is effective for extinguishing this type of fire. It takes a lot of baking soda to smother a grease fire, so pour it on while the flames are still small for the greatest effect
Explanation:
The grease fire has been put down by the addition of sodium bicarbonate as the extinguisher.
Grease fire has been defined as the fire that has been started with the over heating of the cooking oil at home. The fire has been started with the burning of the flammable liquids.
Extinguishing Grease fireThe fire in the cooking oil has been controlled with the addition of the sheet over the fire and turning off the flame.
The addition of water to grease fire results in the splashing of water over the fire and the spreading, resulting in the hazardous effects.
The sodium bicarbonate or baking soda has been used to put down grease fire.
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A student investigates the speed of a ball rolling down a ramp. The student records their data in the table below. Which of these best explains the student’s data?
A. The speed of the ball increases as the ball rolls down the ramp because the force acting on the ball is greater than the force of gravity.
B. The speed of the ball increases as the ball rolls down the ramp because the forces acting on the ball are unbalanced.
C. The speed of the ball decreases as the ball rolls down the ramp because the forces acting on the ball are balanced.
D. The speed of the ball decreases as the ball rolls down the ramp because of friction between the ball and the ramp.
Answer:
b
Explanationbecause i took the test and got a 100
¿Qué energías son usadas en la fabricación de las llantas desde la obtención de materia prima caucho natural, hasta el producto terminado ?
Answer:
yo te diria que el elastico amigo es esa
Please help me classify properly.
Answer:C
Explanation:
Homogeneous Mixture
Answer:
homogeneous mixture
Explanation:
it is the same throughout so therefore it can be separated
A 30L sample of N2 at 20*C is heated to 50*C. The pressure at 20*C was at 3 atm. What is the pressure of N2 after its temperature increased?
Volume stays constant, so: P1/T1 = P2/T2
P1 = 3 atm
T1 = 20*C = 293 K
P2 = ?
T2 = 50*C = 323 K
Solve for P2: P1T2/T1 = P2
P2 = (3 atm)(323 K)/(293 K) = 3.3 atm
The Pressure of N2 after its temperature increased will be "3.3 atm". To understand the calculation, check below.
Pressure and Temperature:According to the question,
Pressure, P₁ = 3 atm
Temperature, T₁ = 20°C or,
= 293 K
T₂ = 50°C or,
= 323 K
We know the relation,
→ [tex]\frac{P_1}{T_1}[/tex] = [tex]\frac{P_2}{T_2}[/tex]
or,
Pressure, P₂ = [tex]\frac{P_1\times T_2}{T_1}[/tex]
By substituting the values,
= [tex]\frac{3\times 323}{293}[/tex]
= [tex]\frac{969}{293}[/tex]
= 3.3 atm
Thus the above response is correct.
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Which best describes a heterogeneous mixture? O A. table salt and water B. alcohol and water C. oil and vinegar O D. hot tea and sugar
Answer:
C. oil and vinegar
Explanation:
A heterogeneous mixture is a mixture where the components are not uniform in composition, like oil and water. They don't mix. When you mix oil and vinegar, you have 2 layers because oil is less dense than vinegar.
Why are halogens unreactive?
A. *Halogens need one to two more electrons to fill their outer shell.
B. Halogens need three to four more electrons to fill their outer shell.
C. D. Halogens have a full outer shell of valence electrons.
Answer: B) is the answer.
Explanation:
Please help me with this
Answer:
no se
ablar inglés losiento princesa
por que todo me sale en inglés?
Explicación?:
Compared with halogens, the alkali metals in the same period has
electronegativity
the same
O larger
O smaller
How many liters are in 2.88 moles of CH4? Round your answer to the hundredths place (2 decimal place)
HELPPO ME PLZ
just help frllllllllllllllllllllllllllllllllllll
Answer: 2 The Proximity toward the ocean
Explanation:
May i plz have brainiest
Location closer to the
equator receives less energy
from the sun.
True or false
Answer: true
Explanation:
Hope this helps
A bag contains 3 red marbles, 3 blue marbles and 1 green if a marble is drawing from the bag at random what is the chance of the marble being blue
Answer:
three-seventh
Explanation:
I need help on this and the first person who answer correctly gets a BRANLIST..
I dont know if I pick the right answer so thats why I need help!!
Answer:
1 oxygen
Explanation:
cause H2O= two hydrogen + one oxyge
The nucleus of an atom is ______ charged
Answer:
The nucleus of an atom is positively charged.
Explanation:
The nucleus of an atom is positively charged because :
The nucleus is a small dense region at the center of the atom. It consists of a positive protons and neutral neutrons. so, It has an overall positive charged.
If 2 moles of salt is dissolved to form 1 liter of solution, what is the molarity of the solution?
Answer:
2M
Explanation:
Molarity refers to the molar concentration of a solution. It can be calculated by using the formula as follows:
Molarity (M) = number of moles (n) ÷ volume (V)
Based on the information provided in this question, 2 moles of salt is dissolved to form 1 liter of solution. This means that n = 2mol, V = 1L
Molarity = n/V
Molarity = 2/1
Molarity = 2M
An industrial synthesis of urea obtains 87.5 kg of urea upon reaction of 68.2 kg of ammonia with excess carbon dioxide. Determine the theoretical yield of urea and percent yield for the reaction.
Answer:
The theoretical yield of urea = 120.35kg
The percent yield for the reaction = 72.70%
Explanation:
Lets calculate -
The given reaction is -
[tex]2NH_3(aq)+CO_2[/tex] →[tex]CH_4N_2O(aq)+H_2O (l)[/tex]
Molar mass of urea [tex]CH_4N_2O[/tex]= 60g/mole
Moles of [tex]NH_3[/tex] = [tex]\frac{62.8kg/mole}{17g/mole}[/tex] (since [tex]Moles=\frac{mass of substance}{mass of one mole}[/tex])
= 4011.76 moles
Moles of [tex]CO_2[/tex] = [tex]\frac{105kg}{44g/mole}[/tex]
= [tex]\frac{105000g}{44g/mole}[/tex]
= 2386.36 moles
Theoritically , moles of [tex]NH_3[/tex] required = double the moles of [tex]CO_2[/tex]
but , [tex]4011.76<2\times 2386.36[/tex] , the limiting reagent is [tex]NH_3[/tex]
Theoritical moles of urea obtained = [tex]\frac{1 mole CH_4N_2O}{2mole NH_3}\times4011.76 mole NH_3[/tex]
= [tex]2005.88mole CH_4N_2O[/tex]
Mass of 2005.88 mole of [tex]CH_4N_2O[/tex] =[tex]2005.88 mole \times\frac{60g CH_4N_2O}{1mole CH_4N_2O}[/tex]
= 120352.8g
[tex]120352.8g\times \frac{1kg}{1000g}[/tex]
= 120.35kg
Therefore , theroritical yeild of urea = 120.35kg
Now , Percent yeild = [tex]\frac{87.5kg}{120.35kg}\times100[/tex]
72.70%
Thus , the percent yeild for the reaction is 72.70%
True or false: The phenolphthalein indicator changes colour close to the point of neutralization which shows the end-point of the titration.
Answer:
True
Explanation:
A titration can be defined as the experiment where the volume of known con concentration is mixed into another solution whose concentration is not known.
Most of the titration are acid-base titration. When performing titration the indicator which is used is usually phenolphthalein. The end point of the titration is the point where the indicator changes its color.
In case of acid base reaction, the end point is achieved when the phenolpthalein turns faint pink in color from transparent.
Hence, the given statement is correct, the indicator changes its color close to the end point of titration.