All energy transformations in an ecosystem starts with the sun.
In the ecosystem, every living being depends on some kind of energy to survive. There are different types of sources of energy in the world. Like: Solar energy, wind energy, tidal energy, fuel energy.
However sun is the only reason behind every transformation of energy. For example wind energy generates from the movement of the wind. But wind is generated due to the pressure difference of two different placed, and this pressure difference is due to the temperature difference of that places. Which ultimately depends on the sun.
In other example, fuel energy derived from the fossils. Fossils are the decomposition of dead plants and animals in the presence or absence of oxygen. But theses plants and animal needs solar energy for photosynthesis and for their survival. So we can say that the sun is the only reason behind every transformation of energy in the eco system.
Hence the option b is correct.
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How much potential energy does a 1. 0 kg object have if you raise it 1. 0 m?.
The potential energy of the object is 9.8 Joule. The result is obtained by using the formula for kinetic energy.
What is potential energy?Potential energy is the energy of an object due to its position.
The energy of an object in a gravitational field is called gravitational potential energy. It can be expressed as
U = mgh
Where
U = gravitational energym = massg = gravitational fieldh = heightSuppose we raise a object with a mass of 1.0 kg to 1.0 m high. Find the potential energy!
We have
m = 1.0 kgh = 1.0 mThe Earth's gravitational field is 9.8 m/s².
The potential energy would be
U = mgh
U = 1.0 × 9.8 × 1.0
U = 9.8 Joule
Hence, the object has the potential energy of 9.8 Joule.
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A 10,300 kg railroad car traveling at a velocity of 19 m/s strikes a second boxcar at rest. If the two cars stick together and move off with a velocity of 6 m/s, what is the mass of the second car?
The mass of the second box car from the calculation is 22317 Kg.
What is the mass of the second car?We have to note that we can be able to obtain the momentum as the product of the mass and the velocity of the object that is to be studied. In the case of the cars that we have here;
The momentum before Collison = Momentum after collision
We would then have from the question;
(10300 * 19) + (M * 0) = (10300 + M) * 6
Let the mass of the second box car be M
Then;
195700 = 61800 + 6M
M = 22317 Kg
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How do you find the molar mass of a mole of a compound?.
Molar mass is defined as the mass of a mole of a substance, either it is an element or compound. It is calculated by dividing the number of moles from the amount of substance.
Molar mass is the mass of a mole of substance. So if a substance have 50g/mol as molar mass then there will be Avogadro's (6.022×10²³) number of atoms or molecules. For example, the molar mass of water is 18g/mol. That means 18g of water has exactly 6.022×10²³ molecules in it.
For calculating the molar mass we simply have to add all the atomic masses of atoms in that molecule. For example molecular mass of sodium chloride is the sum of atomic masses of sodium and chloride. So 22.99+32.45 = 58.44g/mol.
So molar mass is basically mass of a mole of atom/molecule. So to calculate molar mass of a molecule, calculate the sum of all the atomic masses.
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How does latency benefit the users?.
Generally low latency benefits the user because it provides real time closeness with least possible delays in transmitting data digitally, which means option C is correct.
Latency refers to the time lag which happens when a digital data is transferred from its origin location to the destination point. Low latency means that there will be less delay and this would mean the closeness between the digital speed and real time speed. High latency implies that there are many delays in data packet transmission. It is determined using the formula given below:
Latency = Propagation time = Distance to be covered / Propagation speed
Thus, low latency will enable quick processing and transfer of data across a network connection. It enables better online connection, calls and meetings.
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Refer to complete question below:
How does lower latency benefit the users connected to a network?
by expanding the range over which the network's signals are transmittedby enabling more devices to connect to the network at the same timeby reducing the delay when sending and receiving data between devicesby limiting network access to users with higher security credentialsLet's Practise 2.2 1 Figure 2.19 shows the distance-time graph of an object from its starting point. Describe the motion of the object in terms of both its distance from the starting point and its speed at (a) t=0 s; (b) t = 20 s; (c) t = 40 s. Distance/m 300 250 200- 150 100 50 0 5 10 15 20 Figure 2.19 25 30 35 40 Time/s
(a) The speed at 0 second is 0 m/s
(b) The speed at 20 seconds is 5 m/s
(c) The speed at 40 seconds is 0 m/s
What is the speed of an object?
The speed of an object is defined as the ratio of distance travelled to the total time of motion of the object.
v = d / t
where;
d is the distancet is the timeThe date from the graph is given as;
distance (m ) --------------------------------- time ( s )
300 0
250 5
200 10
150 15
100 20
50 25
0 30
The speed at 0 second = ( 300 m ) / ( 0 ) = 0 m/s
The speed at 20 seconds = ( 100 m ) / ( 20 s ) = 5 m/s
The speed at 40 seconds = ( 0 m ) / ( 40 s ) = 0 m/s
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How do you calculate moles with grams?.
You must adhere to the grams to moles formula in order to accurately calculate the number of moles, n, of a substance with a given mass, m, (in grams):
The molar mass of this substance is M, and n = m / M.The term "mole" refers to the quantity of a substance that includes the same number of elementary particles as there are atoms, molecules, or ions in carbon. In a sample of water weighing 100 grams, there are roughly 5.55 moles of water.
We can infer that there are 2 moles of hydrogen present from the provided sample's weight of 4 grams. In chemistry, a mole, sometimes spelled mol, is a common scientific unit for calculating huge concentrations of extremely tiny objects, such atoms.
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How many molecules are there in 1g?.
The amount of atoms or molecules in a substance with an atomic weight of one gram is known as Avogadro's number, which is 6.022 10^23/mole.
"A gram molecule can be defined as the amount of a substance measured in grams and equal to the relative molecular mass of that specific substance." For instance, one gram of water is equal to 18 grams (H[tex]{2}[/tex]O = 1 + 1 + 16 = 18 g).
A mole of a substance is the same as the number of molecules of that substance that make up exactly 12 g of carbon-12. This indicates that the molecular weight of any material, stated in terms of atomic mass units, is equal to its weight in grams, or mole, per unit of that substance.
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What is the kinetic energy of a mass of 5. 0 kg moving at 4. 0 m s?.
40 J is the kinetic energy of a mass of 5. 0 kg moving at 4. 0 m s.
What is Kinetic Energy ?Kinetic energy is the energy that an object possesses due to its motion. It is defined as the work required to accelerate an object of specified mass from rest to a specified velocity. After the body acquires this energy during acceleration, it retains this kinetic energy as long as the velocity does not change.
We know that kinetic energy = mv²/ 2
So kinetic energy of given object = 5*4*4/2
= 40
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Lee was 3,900 meters south of a grocery store, biking north at a constant velocity. He biked
one-third of the way to the grocery store in 5 minutes. What was Lee's velocity?
Write your answer as a whole number.
meters per minute to the north
One third of the total distance of 3900 m is 1300 m. The time taken to travel this distance is 5 minutes or 300 seconds. Then, the velocity of the person is 4.3 m/s.
What is velocity ?The velocity of a moving object is the measure of its distance travelled per unit time. It is a vector quantity having both magnitude and acceleration. The units of velocity are m/s, km/hr, ft./s etc.
Velocity of an object is the ratio of the change in distance to the change in time. It is given that the total distance to the grocery is 3900 m
1/3rd of 3900 m= 1300 m
Lee travels 1300 m in 5 minutes or 300 seconds,
Hence, the velocity = distance/ time
v = 1300 m / 300 s = 4.3 m/s
Therefore, the Lee has a velocity of 4.3 m/s.
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Bobby pushes a wheelbarrow 10m with a force of 200N. How much work did he do 
Formula for work:
[tex]w=Fd[/tex]
work(measured in joules) = force(measured in newtons) * distance(measured in meters)
__________________________________________________________
Given:
[tex]d=10m[/tex]
[tex]F=200N[/tex]
[tex]w=?[/tex]
__________________________________________________________
Finding work:
[tex]w=Fd[/tex]
[tex]w=200\times10[/tex]
__________________________________________________________
Answer:
[tex]\fbox{w = 2000 Joules}[/tex]
Write a paragraph describing three characteristics that scientists can use to classify stars using the terms "main sequence, spectrum, and light year".
Answer:
Scientists classify stars based on three main characteristics: main sequence, spectrum, and light year. The main sequence of a star refers to its position on the Hertzsprung-Russell diagram, which plots the luminosity of a star against its surface temperature. Stars that fall on the main sequence are considered to be "normal" stars and are burning hydrogen in their core to produce helium. The spectrum of a star refers to the light it emits, which can be analyzed to determine its composition, temperature, and motion. Stars are classified based on their spectra into different spectral types, such as O, B, A, F, G, K, and M. Lastly, the light year is a unit of measurement used to express astronomical distances and is equal to the distance that light can travel in one year, which is about 5.88 trillion miles (9.46 trillion kilometers). Using these three characteristics scientists can classify stars into different groups and understand the properties of the star and its evolutionary stage.
Explanation:
Scientists use various characteristics to classify stars and understand their properties and evolutionary stage. One of the main characteristics used is the main sequence of a star, which refers to its position on the Hertzsprung-Russell diagram. This diagram plots the luminosity of a star against its surface temperature, and stars that fall on the main sequence are considered to be "normal" stars that are burning hydrogen in their core to produce helium.
Another characteristic used to classify stars is the spectrum of a star, which refers to the light it emits. By analyzing the spectrum of a star, scientists can determine its composition, temperature, and motion. Based on the spectral features, stars are classified into different spectral types, such as O, B, A, F, G, K, and M. Each spectral type has unique characteristics, such as temperature, luminosity and chemical composition.
Lastly, scientists use the light year as a unit of measurement to express astronomical distances. A light year is the distance that light can travel in one year, which is about 5.88 trillion miles (9.46 trillion kilometres). This unit is useful for understanding the distance between stars and galaxies, as well as the relative ages of different stars.
By using these three characteristics, scientists can classify stars into different groups, understand their properties, and deduce information about the star's evolutionary stage. This knowledge can help scientists understand the formation and evolution of stars and galaxies, as well as the universe as a whole.
A projectile is launched from a height of 14 feet. The projectile reaches a maximum height of 78 feet after traveling 80 feet horizontally. The path of the projectile can be modeled by a parabola, where y is the height (in feet) and x is the horizontal distance traveled (in feet). What is the height of the projectile after traveling 120 feet horizontally?.
Answer: Height of 60 feet when it has traveled 60 feet horizontally.
What is projectile Motion?
-- Projectile motion is a form of motion experienced by an object or particle that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under the action of gravity only
What is the equation that describes the shape of the parabola?
-- The following rule may be used to derive the equation of a quadratic function with vertex (h,k) as its focus:
y = a (x-h)^2 + k
After traveling 40 feet in a straight line, the projectile reaches its highest point at 74 feet in height. Since the vertex is located at (40, 74), we may deduce that h = 40 and k = 74.
When x and y are both equal to 18, the leading coefficient may be obtained by doing the following:
1600a + 74 = 18.
a = -0.035.
After the projectile completed a horizontal distance of 60 feet, denoted by the expression x = 60, the height was calculated as follows:
y = 60.
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What is the formula of time of flight T?.
Thus, the flight time is T=2usinθg.
The time it takes for an object, particle, or wave (whether acoustic, electromagnetic, etc.) to traverse a distance across a medium is measured as time of flight (ToF). Time of takeoff It is described as the length of time the projectile spends in the air. greatest height It is described as the greatest vertical distance a bullet can travel.
Vertical range It is described as the longest horizontal distance that can be travelled. Determine how long it takes the projectile to reach its highest point in order to calculate the flight time. Just twice as long as the maximum height is the flight time. At the highest point, vy = 0. The only factor that affects the time of flight is the starting y-direction velocity.
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Three point charge, -5. 20 10-9 C, -9. 90 10-9 C, and 7. 20 10-9 C, are fixed at different poition on a circle. The total electric potential at the center of the circle i -2150 V. What i the radiu of the circle?
Three-point charges, fixed at different positions on a circle. The total electric potential at the center of the circle is -2150 V. Then the radius of the circle is 0.033 m
Coulomb force (F) is the force caused by the interaction between two charges separated by a certain distance which is formulated as F = k.q1.q2/r², where q1 is charge 1 (C), q2 is charge 2 (C), r is the distance of the second charge, and k is a constant
Let the radius of the circle is R
Now the potential at point P due to all charges is given by:
V = k (q1/R + q2/R +q3/R)
with:
k = 9 x 10⁹ Nm²/C²
q1 = -5.20 x 10⁻⁹C
q2 = -9.90 x 10⁻⁹C
q3 = 7.20 x 10⁻⁹C
V = -2150 V
So:
V = k (q1/R + q2/R +q3/R)
V = k/R (q1 + q2 +q3)
R = 9 x 10⁹/-2150 (-5.20 x 10⁻⁹ -9.90 x 10⁻⁹ + 7.20 x 10⁻⁹)
R = (-0.041 x 10⁹) (-7.9 x 10⁻⁹)
R = 0.033 m
So, the radius of the circle is 0.033 m.
Writing the right questions:
Three-point charges, -5.20 x 10⁻⁹C, -9.90 x 10⁻⁹C, and 7.20 x 10⁻⁹C, are fixed at different positions on a circle. The total electric potential at the center of the circle is -2150 V. What is the radius of the circle?
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Is acceleration down negative or positive?.
When a body accelerates, it is doing something positive; when it decelerates, it is doing something negative.
Regardless of direction, the acceleration of a projectile or an item in free fall that is exclusively impacted by gravity has a value of -9.81 m/s2. Because the speed is dropping, the acceleration is negative when climbing. Because it is moving in the opposite direction—down—the acceleration is negative when going down.
If the object is stationary or going downward, g will be positive. In the case of an item going upward, g will be negative. Gravity acts in the same direction as the velocity if a body is moving downward, hence the acceleration caused by gravity is also moving downward. Therefore, it is viewed positively.
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Car 1 has a mass of 8.0 kg and is moving left at 3.75 m/s. Car 2 has a mass of 5.5 kg and is moving right at 2.00 m/s. They collide. Afterward, car 1 moves right at 1.00 m/s.
How fast is car 2 moving after the collision, and in what direction?
The final velocity of the car 2 after the collision is 4.91 m/s to the left.
What is the final velocity of car 2 after the collision?The final velocity of the car 2 after the collision is calculated by applying the principle of conservation of linear momentum.
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
where;
m₁ is the mass of car 1m₂ is the mass of car 2u₁ is the initial velocity of car 1u₂ is the initial velocity of car 2v₁ is the final velocity of car 1v₂ is the final velocity of car 2The final velocity of the car 2 after the collision is calculated as;
-(8 x 3.75) + (5.5 x 2 ) = (8 x 1) + 5.5v₂
-19 = 8 + 5.5v₂
-27 = 5.5v₂
v₂ = -27 / 5.5
v₂ = -4.91 m/s
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Each multi wire branch circuit shall be provided with a means that will simultaneously disconnect all ungrounded conductors at the same point where the branch circuit originates.
The "means of disconnect" criterion (NEC 210.4b) for multi-wire branch circuits merely stipulates that there must be a method of disabling all legs simultaneously. Typically, the 2-pole (240v) circuit breaker in the panel serves as that, which is acceptable and satisfies the criteria.
What must be available to unplug every gadget from ungrounded conductors?
All ungrounded conductors in the panelboard where the branch circuit originates must have a way to be simultaneously disconnected, according to Section 210.4(B).
A multi-wire branch circuit is what?
NEC Article 100 states that a multiwire branch circuit is made up of a grounded conductor with an equal voltage between it and each ungrounded conductor, as well as two or more ungrounded conductors that have a voltage between them.
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What is the formula of linear equation in two variable *?.
If such an equation has been stated in the form axe + by + c=0, it must be considered to be a linear equation involving two variables.
A linear equation's slope-intercept formulation is y = mx + b. The variables inside the equation are x and y. The integers m and b represent the the slope of graphical line (m) as well as the value of y whenever x is 0 respectively (b).
Ax+By=C is the typical form expressing linear equations involving two variables. For example, 2x+3y=5 is a common linear equation.
To solve linear equations, discover the value of the variable which thus makes the equation true. Have used the inverse of said variable's multiplier and multiplied as well as divided both sides using it.
To obtain the variable value, simplify the result. Check ones answer by re-entering it into the equation.
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The pendulum of a clock i diplaced by a ditance of 4. 0 cm and it ocillate in. H. M. With a with a period of 1. A. Calculate the maximum velocity of the pendulum bob
Maximum velocity of the pendulum bob is 2.9 x 10^-4 m/s when the pendulum of a clock i diplaced by a distance of 4. 0 cm and it ocillate in. H. M. with a with a period of 1.
The period of a pendulum is given by the formula: T = 2π √(L/g), where L is the length of the pendulum and g is the acceleration due to gravity.
In this case, the period of the pendulum is 1 hour, or 3600 seconds, and the length of the pendulum is 4.0 cm, or 0.04 meters.
The maximum velocity of the pendulum bob can be calculated using the formula: v = (2πL/T) = 2π * (0.04 meters) / (3600 seconds) = 2.9 x 10^-4 m/s.
So, the maximum velocity of the pendulum bob is 2.9 x 10^-4 m/s.
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At which stage is the kinetic energy zero?
Answer: ABSOLUTE ZERO
Explanation:
The change in momentum that occurs when a 1.0 kg ball traveling at 4.0 m/s strikes a wall and bounces back at 2.0 m/s is?
8kgm/s is the change of momentum when a 1.0 kg ball traveling at 4.0 m/s strikes a wall and bounces back at 2.0 m/s.
The product of the mass and the change in the velocity can be explained as change in momentum. Δp is denoted as the change in momentum. We know that, the change in velocity which brings a change in momentum.
Change in momentum = mass× change in velocity
Initial velocity = 4m/s
Final velocity = -4m/s
Change in velocity = 4-(-4) = 8m/s
Change In momentum = 1×8 = 8kgm/s
Therefore, the change in momentum of the ball is 8kgm/s.
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What is the potential energy of a 5Kg body at a height of 10 m using G 9. 8 N kg?.
Therefore, a body of mass 5 kg held at a height of 10 m has a potential energy of 500 J.
An object's potential energy is its stored energy. This energy has the capacity to be productive. On Earth, this acceleration is equivalent to 10 meters per second. PE = mgh is the equation for potential energy resulting from gravity. The object's potential energy declines and its kinetic energy rises as it approaches the ground.
In this instance, a 5 kg body was maintained at a height of 10 m. As a result, the potential energy is represented as:
PE = mgh
PE = 500 J or 5 * 10 * 10.
PE = 500 J.
Therefore, a body of mass 5 kg held at a height of 10 m has a potential energy of 500 J.
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What is 20 newton in KG?.
What is the magnitude of the vector 10i +10k m s?.
The magnitude of the vector 10i +10k is 10[tex]\sqrt{2}[/tex].
The length of a vector determines its magnitude. It is also referred to as the vector's absolute value or its modulus. The Pythagorean theorem is used to calculate the magnitude of a vector.
By using the symbol |v|, the magnitude of a vector formula can be utilised to determine the length for a given vector (let's say v). This amount is essentially the distance between the vector's beginning point and ending point. The magnitude of a vector is its length, and its direction is the direction it is pointing.
A vector's magnitude can be calculated in a few straightforward steps. Adding and subtracting vectors, determining the angle between two vectors, and determining the cross product are further crucial vector operations.
Magnitude = [tex]\sqrt{a^{2}+b^{2}+c^{2} }[/tex]
[tex]= \sqrt{10^{2}+10^{2} } \\= \sqrt{100+100}\\= \sqrt{200} \\= 10\sqrt{2}[/tex]
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an electric field of 20 N/C pointing in the x direction. how much work is done to move a charge of 0.2 C through a distance of 2m at an angke of 60 with respect to the x axis?
The amount of work done to move a charge is 4 J.
What is work done in moving the charge?The amount of work done to move a charge of 0.2 C through a distance of 2m at an angle of 60 with respect to the x axis is calculated as follows;
W = Fd cosθ
where;
F is the electric forced is the distance travelled by the chargeθ is the direction of the chargeW = (EQ) x d cosθ
where;
E is the electric fieldQ is the chargeThe amount of work done to move a charge is calculated as;
W = ( 20 x 0.2 0 x ( 2 ) x cos (60)
W = 4 J
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rank the boxes in order of decreasing magnitude of the force static friction between them and the surface. Rank the boxes from highest to lowest magnitude of the force static friction between them and the surface. To rank items as equivalent, overlap them
Friction is a contact force that exists between two rough surfaces in contact with each other. The friction force between two surfaces prevents and opposes any kind of sliding motion between the two surfaces.
What is meant by Friction?
When two stationary surfaces are in contact, static friction operates to stop any sliding action.Any external force that could work to shift the surfaces' positions in relation to one another is opposed by this force.When a motion is already in motion, friction called kinetic friction takes effect. The motion is stopped as a result of it.a force that prevents two solid objects from smoothly sliding or rolling over one another is known as friction. While frictional forces, such as the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion.To learn more about Friction refer to
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Is 0 latency possible?.
Achieving 0 latency is theoretically possible but practically it is not. Latency is the time it takes for a packet of data to travel from its source to its destination.
In a theoretical scenario, if the data is transmitted and received instantaneously without any delay, the latency would be zero. However, in reality, there are always delays caused by the physical distance the data has to travel and the time taken for the data to be processed by the various devices and networks it passes through.
Even the fastest communication technologies available today, such as fiber-optic cables and 5G networks, have a small amount of latency, which is measured in milliseconds (ms).
While 0 latency is not possible, we can work towards minimizing it as much as possible to improve the performance and user experience in applications that require real-time communication or control.
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Which color of visible light would have the least energy? which would have the most energy? how do you know?
Blue, indigo, cyan, green, yellow, oranges, and red are the hues of visible light. Red has the different energy levels since it has the shorter wavelengths of all visible light.
Which color from visible light contains the most energy and the least energy?Violet has the most energy, whereas red has the least. Just as there are frequencies our ears can't hear, there are many other types of light besides red and violet that our eyes can't see. Radio waves, which already have wavelengths thousands of times longer compared to visible light, are at one spectrum end of the spectrum.
Which one is the most and least energetic?Gamma rays which have the maximum energy in the visible radiation, with long radio waves Along with visible light, the sun also produces infrared and ultraviolet radiation. Only a narrow waves or particles at different, from 380 nm to 750 nm, are covered by the visible portion of the electromagnetic spectrum.
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A loudspeaker of mass 21.0 kg is suspended a distance of h = 2.20 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.50 m .
Answer:
The question isn't complete. Do you want to find the tension in the two Cables?
How many molecules are in a mole of aspartame?.
We are very well know that there are 6.02 10^23 molecules in a single mol of aspartame molecules.
A substance's mole is equivalent to 6.022 x 10^23 of that material (such as atoms, molecules, or ions). The term "Avogadro's number" or "Avogadro's constant" refers to the number 6.022 10^23. To convert between mass and the quantity of particles, use the mole concept.
Avogadro's number can be used to multiply or divide between molecules and moles: Moles are multiplied by 6.02 x 10^23 to convert to molecules. The mass of 6.022*10^23 atoms, molecules, or formula units make up one mole of a substance, which is known as the molar mass. This value is given in grams per mole.
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