7.4304*10²⁴ molecules water molecules are present in 222.22 ml sample of water ( molar mass =18.01 g/mol).
Mass of water = density * volume
=1.00gm/mμ*222.22mol
=222.22gn
No of moles of water = mass/molar mass
no of water molecules/Avogadro no.=12.34 mol
no of water molecules= 12.34 mol * 6.022*10²³ mol
=74.304*10²³ molecules
=7.4304*10²⁴ molecules
so, 7.4304*10²⁴ molecules are present in 222.22 ml of water sample
7.4304*10²⁴ molecules.
Describe a molecule:One or more atoms make up molecules. They may have the same atoms (for example, an oxygen molecule has two oxygen atoms) or different atoms if they have more than one (a water molecule has two hydrogen atoms and one oxygen atom). Proteins and DNA are examples of biological compounds that can contain thousands of atoms.
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The distance between mankato, mn, and duluth, mn, is approximately 237 miles one way. how far is that in kilometers?
The distance between Mankato and Duluth is 237 miles i.e. equal to 381.415 kilometer approximately.
Distance can be define as, the total movement of an object without any regard to direction. Thus in very simple word the distance between two points is the length of the line segment that connects them. The distance between two points is always positive.
A line segment is a term of geometry that, the part of a line having two endpoints
The distance between Mankato and Duluth = 237 miles
1 miles = 1.60934 kilometers
237 miles = 237 × 1.60934 kilometers
237 miles = 381.41358 kilometers
Therefore ,we can write the distance between Mankato and Duluth in kilometers is 381.4 kilometers.
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The main circuits on the system board that carry data are called the _________.
The main circuits on the system board that carry data are called the data bus.
What is a data bus?
A system within a computer or device that transports data typically consists of a connector or wired connection. Along with the development of personal computers and other hardware, several data bus types have also changed. Web dictionaries define a bus as a vehicle that transports numerous passengers from one location to another, however in this situation, data is also involved. A bus is a connection between two or more devices that needs to convey data or have a communication path. The communication link between a computer system's processing unit and memory unit serves as a standout example.Learn more about the data bus with the help of the given link:
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A(n) _________ uses capacitors and inductors that are tuned to remove particular harmonic frequencies.
A passive harmonic filter uses capacitors and inductors that are tuned to remove particular harmonic frequencies.
A passive harmonic filter is the part of motor systems and utilizes capacitors to carry out different functions.
It is an important component that is installed in the inner side of the motor drive structure to block harmonic frequency.
There are diverse frequency drives in the motor system that produce a lot of distortion.
The purpose of harmonic filter is to reduce the noise produced by distortion.
Furthermore, if the problem is not adequately addresses then it can cause damage to nearby devices or equipment.
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The ideal gas law is represented by PV=nRT. As volume is held constant and the temperature increases, how would the pressure be expected to change? (1 point)
1. It would remain constant
2. It would decrease
3. It would become zero
4. It would increase
The pressure would increase as per Charle's Law, therefore the correct answer is option 4.
What is an ideal gas?It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,
PV = nRT
As given in the problem statement we have to find out if the volume is held constant then what would happen to the gas if the temperature is increased,
For constant volume, the pressure of a gas is directly proportional to the temperature of the gas,
Thus, the pressure would increase as per Charle's Law, therefore the correct answer is option 4.
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A plane flies with a velocity of 50 m/s west through a 20 m/s crosswind blowing the plane south. Find the magnitude and direction of the resultant velocity at which it travels.
Answer:East
Explanation:
The visible light spectrum is bounded on either side by which two types of radiation?
The visible light spectrum is bounded by these two types of radiation: ultraviolet and near infrared.
In physics, electromagnetic radiations are kind of waves that carry electromagnetic field and travel through space.
These waves transport electromagnetic energy while traveling through space.
Different types of electromagnetic waves are radio waves, infrared light, microwaves, gamma rays, UV radiations, and x-rays. While visible light is made up of only infrared and UV.
All these waves have different wavelengths, frequency and energy and make definite part of the electromagnetic spectrum.
These waves have dual nature and also exhibit dual particle nature and travel with light speed.
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I need help with this ASAP.. it was due today
Answer:
its probably f or h for 4 and 5 is answer location
Answer:
See below
Explanation:
4 H explains the months with the highest bars for both locales
5 B as the air rises the water vapor condenses and falls as rain on location B
For motion along a straight line it ______ possible for speed to be constant while acceleration is not zero.
For motion along a straight line it NOT possible for speed to be constant while acceleration is not zero.
If the acceleration is not zero means that the speed has changed whether to higher (positive acceleration) or lower (negative acceleration) if the object is slowing down.
When the speed is constant, it means that the velocity at the beginning of the motion and the velocity at the ending of the motion are the same.
What is acceleration?It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2
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When the electron in h is in the 1st excited state the energy range for range 2 is?
For electron in 1st excited state of H the energy range for range 2 is 1.9eV-3.4eV
Why are photons emitted?The excited state of an atom is typically not the most stable state. There is a chance that an electron will drop spontaneously from one excited state to one with a lower (more negative) energy level. An electron releases the extra energy, which is positive, when it moves from one level to another by emitting a photon
What are the three groups for first excited state of hydrogen where the photon interacts with hydrogen?The various groups are
1)Range 1: 0eV to 1.8eV
2)Range 2: 1.9eV to 2.4eV
3)Range 2:>3.5eV
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The radius of a vanadium atom is 130 pm. how many vanadium atoms would have to be laid side by side to span a distance of 2.54 mm?
The number of vanadium atoms are 9769230.
To find the number of vanadium atom, the given values are,
radius of vanadium atom = 130 pm
distance = 2.54 mm
What is Vanadium?Vanadium is a chemical element and the symbol of vanadium is V.The atomic number of vanadium is 23.The crystal structure of vanadium is Body centered cubic.Let us assume that a vanadium atom has a spherical shape.
diameter of a sphere = 2 x radius of the sphere
Thus,
Radius of a vanadium atom = 130 pm
= 130 x 10⁻¹² m
The diameter of a vanadium atom = 2 x radius
= 2 x 130 x 10⁻¹²
= 260 x 10⁻¹² m
Given a distance of 2.54 mm = 2.54 x 10⁻³ m,
The number of vanadium atoms required to span the distance,
= ( 2.54 x 10⁻³ m) / ( 260 x 10⁻¹² m)
= 9769230.
Therefore, the number of vanadium atom that would span a distance of 2.54 mm is 9769230.
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Select the correct answer. Peter throws a snowball at his car parked in the driveway. The snowball disintegrates as it hits the car. By Newton's third law, you know that both the car and the snowball exert a force on each other. What can you say about the magnitude of the forces exerted by the snowball and the car? OA The force exerted by the car is more than the force exerted by the snowbalL OB. The force exerted by the car is less than the force exerted by the snowball. OC The force exerted by the car is equal to the force exerted by the snowball. OD. The force exerted by the car is zero.
Answer:
OA The force exerted by the car is more than the force exerted by the snowbalL
Explanation:
If the ball's force is more than the force exerted by the car then car will be moved
What does Newton's third law describe?
8 m N & 5 m 30° N of E
Draw and add the vectors.
The Pythagorean theorem can be used to find the resultant, which has a magnitude of 15.6 kilometers. The answer is displayed beneath the diagram.
A resultant vector that is directed both north and east can be created by adding together two displacement vectors with magnitude and direction of 11 km north and 11 km east. The hypotenuse of a right triangle is the result of adding the two vectors' head to tail as shown below. The right triangle's sides are 11 km and 11 km long. Scaled vector diagrams are frequently used to represent vector quantities. An arrow drawn to scale and pointing in a particular direction is used in vector diagrams to represent a vector.
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Both astronomy and astrology study the stars. which one is considered a natural science? explain your reasoning.
Astronomy is a branch of natural science since it focuses on the observation and prediction of celestial occurrences using physical rules. Astrology is a branch of natural science since it involves watching and forecasting celestial events and has an impact on both human affairs and the natural world.
What do astrology and astronomy involve ?Everything in the universe excluding the atmosphere of our planet is covered in the study of astronomy. The Sun, Moon, planets, and stars are examples of celestial objects that humans can view with our unaided eyes. It also includes objects like remote galaxies and tiny particles, which we can only see with the use of telescopes or other devices.
Astrology is a sort of divination that includes predicting events that happen on Earth and in the world of Humans by observing and interpreting the fixed stars, the Sun, the Moon, and the planets.Learn more about Astrology and astronomy here:
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How does the interaction of a nonelectrolyte and water differ from the interaction of an electrolyte and water? give examples of each.
The interaction of a nonelectrolyte and water differs from the interaction of an electrolyte and water because nonelectrolytes do not conduct current while electrolytes can conduct current.
The solution that does not let the current pass through any state either liquid or molten is called nonelectrolyte.
For example, sugar and alcohol are nonelectrolytes.
On the contrary, electrolytes are those mediums, compounds, or substances that allow electric charges to pass through them.
In this way they conduct electricity.
For example, when an ionic substance dissolved in water forms an ionic solution it let the current pass through such as NaCl, HCl, etc. Sodium chloride dissolves in water forming ions of sodium and chloride ions and making the solution electro conductive.
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A balloon drifts 140 m toward the west in 45 s; then the wind suddenly changes and the balloon flies 90 m toward the east in the next 25 s.
j. what was its average velocity during the first 45 s?
k. what was its average velocity during the next 25 s?
l. what was its average velocity for the entire trip?
The average velocity in the first 45 seconds 3.11m/s and in the next 25 seconds is 3.6m/s and finally the average velocity for the entire trip is 3.28 m/s
What is average velocity?The displacement of an object over time is its average velocity. We divide the distance traveled by the amount of time to determine an object's average speed. We are aware that velocity is a vector quantity, and that dividing displacement by time yields the average velocity.
What all is given and how will we solve this question?1 ) 140 m to west in 45 seconds .
2 ) 90 m to east in 25 seconds .
The distance travelled by the balloon in first 45 s = 140 m
distance travelled by the balloon in next 25 s = 90 m
Total distance travelled by the balloon = 140 m + 90 m = 230 m
J ) average speed in first 45 s= distance in 45 s
= 140 ÷45 = 3.11 m /s
K ) average speed in next 25 s
distance in 25 s / 25
= 90÷ 25 = 3.6 m /s
L) average in entire trip
= total distance / total time
= (140 + 90) ÷( 25 + 45 )
= 3.28 m /s
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As your friend skateboards down a hill, you measure their velocity at 1.0-second
intervals. You record the following data: ((0.0 s, 0.0 m/s), (1.0 s, 2.3 m/s),
(2.0 s, 4.6 m/s)}. Determine your friend's acceleration.
Answer:
what does the acronym VAT stand for
The correct answer for the acceleration is [tex]2.3[/tex] m/s².
Given:
Initial velocity:- [tex]0.0[/tex] m/s
Final velocity:- [tex]4.6[/tex] m/s
Time interval:- [tex]2.0[/tex] seconds
Acceleration calculated here will be average acceleration:
From equation of motion:
[tex]v= u+at[/tex]
[tex]a = \dfrac{v-u}{t}[/tex]
[tex]= \dfrac{4.6 -0.0}{2}[/tex]
[tex]= 2.3[/tex]
Acceleration is [tex]2.3[/tex] m/s².
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A student weighs a sample of an unkown metal and finds the mass to be 39.27g what is the metal?
The unknown metal with a mass of 39.27 g is potassium with the symbol K.
The mass of an atom is due to protons and neutrons present in it.
The protons and neutrons are together present in the nucleus of an atom.
The mass of any element is given by its mass number whose formula is
Mass Number = Number of protons + Number of neutrons
In the given case 39 = Number of protons + Number of neutrons
The only element of the periodic table which satisfies the above equation is potassium because it has 19 protons and 20 neutrons.
Thus, the unknown metal with a mass of 39.27 g is potassium with the symbol K.
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Action and reaction forces comprise the parts of select one:
a. a single interaction.
b. two interactions.
Action and reaction forces comprise the parts of a. a single interaction.
For every action, there is an equal and opposite reaction. According to Newton's third law there is an equal (in size) and opposite (in direction) reaction force for every action force. That means that forces result from interactions.
The force exerted on an object is the action, and the force experienced by the object is the reaction.
Some forces result from contact interactions like frictional, tensional and other forces are results of actions at a distance interaction like gravitational, electrical, magnetic.
What is force?
It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.
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starting from rest, a cart moves to the right in a straight line along a track. the motion of the cart is represented by the dots shown, recorded at equal time intervals. which of the following best represents the acceleration vectors at the beginning, middle, and end of the motion?
The second option is the correct answer to the question. The complete question is attached
In the beginning, the cart started from rest and moved to the right. The movement represents positive acceleration
In the middle, there is no change in velocity hence no acceleration. This means that the value of acceleration is zero
A the end, the cart had a negative acceleration which brings the cart to rest.
What is acceleration?Acceleration refers to the change in velocity with time. Usually when there is no change in velocity acceleration is zero. The value can also be positive or negative depending on the velocity.
When there is an increase in velocity, the result is positive acceleration but in a situation when there is a decrease in velocity the result is negative acceleration. At the peak pf negative acceleration the result is to put the object accelerating to a stop.
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set up the experiment as follows:
1. make a small hole in the cardboard. it should be 4 inch from one edge and centered.
2. pull the string or thread through the hole in the cardboard, and tie the ends together to form a loop.
3. slide a large paperclip onto the string, and bend one end out slightly to act as a hook.
4. place a nonbreakable object, such as a kitchen utensil, on the cardboard.
5. select two nonbreakable objects with holes that can be hung on the hook.
what two objects will you select to hang on the hook?
The two objects that I would select to hang on the hook are scissors and stainless-steel cup.
The concept of Balanced ForcesForce symmetry
Balanced forces are those that have opposing directions and equal sizes. One definition of equilibrium is a state of balanced forces.
When the forces are in balance, there is no change in direction.
The sum of balanced forces is always zero. Merging vectors
The momentum or direction of an object cannot be changed by balance forces.
A balanced force keeps an object moving at a steady speed. (Newton’s First Law of Motion)
The Concept of unbalanced forcesAsymmetry of forces
Forces that are not equal in size and differ in direction, always set something moving. (Can alter an object’s direction or speed)
The combined force is equal to the difference between two unbalanced forces acting in opposing directions.
The combined force is equal to the sum of the two unbalanced forces acting in the same direction.
The net force is equal to the resultant when the forces are at right angles.
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Answer:
Explanation:
The two objects that I would select to hang on the hook are scissors and stainless-steel cup.
The concept of Balanced Forces
Force symmetry
Balanced forces are those that have opposing directions and equal sizes. One definition of equilibrium is a state of balanced forces.
When the forces are in balance, there is no change in direction.
The sum of balanced forces is always zero. Merging vectors
The momentum or direction of an object cannot be changed by balance forces.
A balanced force keeps an object moving at a steady speed. (Newton’s First Law of Motion)
The Concept of unbalanced forces
Asymmetry of forces
Forces that are not equal in size and differ in direction, always set something moving. (Can alter an object’s direction or speed)
The combined force is equal to the difference between two unbalanced forces acting in opposing directions.
The combined force is equal to the sum of the two unbalanced forces acting in the same direction.
The net force is equal to the resultant when the forces are at right angles.
If the releases 39.4 kj of energy, how many kilocalories does it release? (1 cal = 4.184 j) (round off answer to 2 decimal place
By using unit conversion, the energy released in kilocalories is 9.42 kcal.
We need to know about unit conversion to solve this problem. There are several energy units which able to explain how much the energy is such as calories and joule. The energy unit can be converted to another unit by unit conversion. The unit conversion of calorie to joule is
1 cal = 4.184 joule
From the question above, we know that
E = 39.4 kJ
By using the unit conversion, we can convert the energy into calorie
E = 39.4 kJ
E = 39.4 x 10³ J
E = 39.4 x 10³ / 4.184 cal
E = 9.42 x 10³ cal
E = 9.42 x 10³ /10³ kcal
E = 9.42 kcal
Hence, the energy released in kilocalories is 9.42 kcal.
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The demand function for product x is given by q subscript x superscript d equals 360 minus 7 p subscript x. how much consumer surplus do consumers receive when p subscript x equals 11?
The demand function for product x is given by q subscript x superscript d equals 360 minus 7 p subscript, consumer surplus do consumers receive. increase by 35,000 units of the good, when p subscript x equals 11.
The sum of the patron surplus and producer surplus is the total gains from trade. Consumer surplus consumers measures the benefit to buyers of participating in a very market.
It's measured because the amount a buyer is willing to purchase is decent minus the number a buyer actually pays for it. The total surplus in an exceedingly market consumers could be a measure of the overall wellbeing of all participants during a market.
Consumer surplus is the difference between willingness to get hold of an honest and also the price that customers actually purchase it. Consumer surplus is an economic measurement to calculate the benefit (i.e., surplus) of what consumers are willing to obtain an honest or service versus its value. The patron surplus formula is predicated on a theory of utility.
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Light can show us that an object is rotating when one side is moving toward us and one side is moving away using:_____.
Light can show us that an object is rotating when one side is moving toward us and one side is moving away using rotational Doppler effect.
Doppler effect in light is the change in frequency of light observed by the observer due to relative motion of source in relation with the observer.
When the source of light moves towards the observer frequency increases and the wavelength decreases causing a blue shift. But when the source of light moves away from the observer frequency decreases and the wavelength increases causing a red shift.
Therefore, light can show us that an object is rotating when one side is moving toward us and one side is moving away using rotational Doppler effect.
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6. Why might a small increase in the dimensions of an object cause a large change in
volume?
Answer:
Because volume is determined as the product of length and width as well as height of an object.So change in any dimension can change the other two dimensions as well which brings about a greater change in volume by carrying out the product of the dimensions .
Explanation:
Length x width x height = Volume of a regular shaped object
An object in mechanical equilibrium is an object:________
a. at rest.
b. moving with constant velocity.
c. having no acceleration.
d. all of these
An object in mechanical equilibrium is an object: a. at rest.
A system is at rest or equilibrium when the sum of all the forces acting on the body or the resultant force of the system is equal to zero (0), therefore, there is an equilibrium between them.
The general formula for calculating the resultant force on an object and determined if it is in mechanical equilibrium is the following:
Fr = ∑F
Where:
Fr = resultant force∑Fr = F1 + F2 + FnWhat is resultant force?We can say that the resultant force is the algebraic sum of all the forces acting on a body.
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A certain reaction has an activation energy of 43.41 kj/mol. at what kelvin temperature will the reaction proceed 7.50 times faster than it did at 317 k?
The temperature required to increase the reaction rate by 7.50 times will be 332.63 K .
The speed at which a chemical reaction proceeds is known as the reaction rate.
We are given that ,
The activation energy = E = 43.41 kj/mol
Initial temperature = T₁ = 317 k
Therefore we can write as, the temperature at which reaction has 7.50 times faster than at 317 K be T₂ . Then the rate of a reaction increases because the rate constant increases with temperature.
The relation between temperatures, rate constants, and activation energy is given as,
(k₁/k₂) = E/R [(1/T₁ ) - (1/T₂)]
Where, k₁ is rate constant at temperature T₁ and k₂ is rate constant at temperature T₂ & R is gas constant having value 8.314 j/kmol .
Thus putting all the given values in above equation then we get,
7.50k/k = (434100 j/mol)/(8.314j/kmol)[(1/317k) - (1/T₂)]
7.50 = 52213.1344 k [ 0.00315 k⁻¹ - 1/T₂]
1/T₂ = 0.00315 K⁻¹ - (7.50/52213.1344)
T₂ = 332.63 K
Therefore the temperature required to increase the reaction rate by 7.50 times is given as T₂ = 332.63 K
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What type of turbine is frequently used instead of electric motors so that it will continue to run in the event of a power outage?
The most adaptable type of turbo machinery available today is the gas turbine. It can be employed in a variety of ways in crucial sectors like aviation, oil and gas, process facilities, power generation, and smaller allied industries.
How long do power outages often last ?Typically, outages last about 1-2 hours. Recall that all outage start times are approximations. They are intended to be suggestions rather than set schedules. You may aid in averting outages. The three most frequent causes are overload, human mistake, and natural causes. A halt or failure in the flow of power, particularly electricity. A two-hour blackout on the East Coast during which power is lost. A halt in a machine or mechanism's operation brought on by a problem with the electrical or power source.
Basically, any disruption between the production of electricity and its delivery to houses might result in a power outage. It can be caused by bad weather, human error, defective equipment, and even animal involvement.
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When a retailer offers t-shirts in small, medium, large, and x-large, and in 25 colors, the competitive strategy they are using is?
When a retailer offers t-shirts in small, medium, large, and x-large, and in 25 colors, the competitive strategy they are using is Variety
What is competitive strategy ?A business uses a set of rules and practises known as a competitive strategy to acquire a competitive edge in the market. It is the procedure for choosing and carrying out strategies that enable a company to strengthen its position in the market.
This plan was developed after evaluating the opportunities, threats, strengths, and weaknesses of the opposition and contrasting them with your own.Establishing a competitive advantage in the market is the goal of a competitive strategy. Porter's Five Forces Model is the main instrument for assessing an organization's competitive position in the market.Learn more about Competitive strategy here:
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Wich part of the mind uses conscious-making to find a compromise between the id and the superego
The Id
The id, according to Freud, is the main element of personality because it is the source of all psychic energy.
The only aspect of personality that is present from birth is the id.
This element of personality, which consists of innate and primordial behaviors, is essentially unconscious.
The pleasure principle, which aims for instant fulfillment of all needs, wants, and desires, is what motivates the id.
A condition of tension or anxiety results if these demands are not met right away. An increase in hunger or thirst, for instance, should prompt a prompt attempt to eat or drink.
Early in life, the id is crucial since it guarantees that an infant's wants are addressed. if the infant is uneasy or hungry.
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