The statements associated with kinetics that are true are: (a) temperature generally increases the rate of a reaction, (b) the activation energy of a reaction does not depend on the energy difference of reactants and products and (e) the rate of a reaction depends on the change in concentration over time.
From the list of statements associated with kinetics, the ones that are true are:
(a) Temperature generally increases the rate of a reaction: This is true because higher temperatures provide more kinetic energy to the molecules, resulting in more frequent and energetic collisions between reactants, which ultimately increases the rate of the reaction.
(b) The activation energy of a reaction does not depend on the energy difference of reactants and products: This is also true because the activation energy is the energy barrier that needs to be overcome for the reaction to proceed, and it is independent of the energy difference between reactants and products.
(e) The rate of a reaction depends on the change in concentration over time: This is true because the rate of a reaction is directly related to how fast the concentration of reactants decreases or the concentration of products increases over time.
The statements (c) and (d) are not true. Temperature does not generally reduce the activation energy, and the rate law describes the influence of concentration on the rate of reaction, not the rate constant.
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what is weight?write the formula of weight
Answer: The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg.
Explanation:
what part of an electric motor transforms electrical energy into mechanical energy
Answer:
Explanation: a
A mixture of sand, salt, and sawdust was stirred in the water and the mixture was allowed to stand.
a) How might you collect the pure substance?
b) What is the sediment that forms?
c) the clear liquid was poured off and divided into 2 parts. One part was evaporated and the other was distilled.
1) what substances would be collected by distillation?
2) what would be collected by distillation?
3) what difference in properties allows the separation in both evaporation and distillation.
Give the answer and the reason and I will mark you as the brainiest whoever answers this.
Answer:
Explanation:
a) To collect the pure substance, you could use a separation technique such as filtration to remove the solid mixture of sand, salt, and sawdust from the water. The pure substance in this case would be the water.
b) The sediment that forms is the mixture of sand, salt, and sawdust that settles to the bottom of the container after the mixture is allowed to stand.
C)
1. If the clear liquid that was poured off is distilled, the substances that would be collected would depend on the boiling points of the substances present in the liquid. Substances with lower boiling points will vaporize and be collected first, while substances with higher boiling points will be collected later.
2. If the clear liquid is evaporated, the substance that would be collected is the liquid itself, in a more concentrated form.
3. The difference in properties that allows separation in both evaporation and distillation is the difference in boiling points of the substances present. In evaporation, the liquid with the lowest boiling point will evaporate first, while in distillation, the substance with the lowest boiling point will be vaporized and collected first.
Currently, the world population is about:
A. 7 billion
B. 450 million
C. 1.2 trillion
D. 700 million
a mechanic uses a hydraulic lift to raise a 1200 kg car 5 meters off the ground. how much lift do on the car?
The lift on the car is 11,760 N and the work done by the lift to raise the car 5 meters off the ground is 58,800 J.
What is Hydraulic lift?
A hydraulic lift is a device used to raise heavy objects using a liquid, usually oil, which is stored in a closed system. It consists of two pistons that are connected by a pipe and filled with oil. When a force is applied to the smaller piston, it creates pressure in the oil, which is transmitted to the larger piston, causing it to rise and lift the heavy object.
The lift force on the car is equal to the weight of the car, which can be calculated using the formula:
Weight = mass x gravity
where mass is the mass of the car and gravity is the acceleration due to gravity, which is approximately 9.8 m/\(s^{2}\)
Weight = 1200 kg x 9.8 m/\(s^{2}\)
Weight = 11,760 N
To lift the car 5 meters off the ground, the mechanic must do work against the force of gravity. The work done is equal to the force multiplied by the distance lifted, which can be calculated using the formula:
Work = force x distance
Work = 11,760 N x 5 m
Work = 58,800 J
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3 paragraphs about who Larry page was and what advancements he provided to the world
Larry Page, real name Lawrence Edward Page, is a computer scientist and entrepreneur from the United States who co-founded Goo-gle, one of the most well-known websites on the Internet, with Sergey Brin on March 26, 1973 in East Lansing, Michigan.
Larry Page was drawn to technology at a young age and worked toward his goals. His success is truly inspirational. In the dorms of their college, he and Sergey Brin founded Goo-gle and grew it into a multinational corporation. Working hard is the secret to success.The concept of deciphering the vast amount of data amassing on the Internet interested Brin and Page, who first met while graduate students at Stanford University. They started developing Backrub, an innovative form of search technology, from Page's dorm room at Stanford. a week ago.To know more about Larry Page
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A particle moves on a trajectory y=x^4-x^2 with the velocity component in the direction of the axis x, constant and equal to 2 m/^2.Find the tangential acceleration and the normal acceleration at the point (2, 12).
To find the tangential and normal accelerations at the point (2, 12), we need to analyze the particle's motion using calculus.
First, let's find the velocity vector. The given information tells us that the velocity component in the direction of the x-axis is constant and equal to 2 m/s^2. Since the motion is along the trajectory y = x^4 - x^2, the velocity vector can be written as:
v = (2, dy/dt)To find dy/dt, we differentiate the equation of the trajectory with respect to time:
dy/dt = d/dt(x^4 - x^2)= 4x^3 - 2xSo, the velocity vector becomes:
v = (2, 4x^3 - 2x)Now, let's find the acceleration vector. The tangential acceleration (at) is the rate of change of the magnitude of velocity, and the normal acceleration (an) is the centripetal acceleration perpendicular to the trajectory.
To find at, we differentiate the magnitude of velocity (speed) with respect to time:
|v| = sqrt((2)^2 + (4x^3 - 2x)^2)= sqrt(4 + 16x^6 - 16x^4 + 4x^2)Differentiating |v| with respect to time, we get:
at = d/dt(sqrt(4 + 16x^6 - 16x^4 + 4x^2))= (1/2) * (4 + 16x^6 - 16x^4 + 4x^2)^(-1/2) * d/dt(4 + 16x^6 - 16x^4 + 4x^2)= (1/2) * (4 + 16x^6 - 16x^4 + 4x^2)^(-1/2) * (96x^5 - 64x^3 + 8x)To find an, we use the formula:
an = (v^2) / rwhere r is the radius of curvature. The radius of curvature can be found using the equation:
r = (1 + (dy/dx)^2)^(3/2) / |d^2y/dx^2|Differentiating the equation of the trajectory, we get:
dy/dx = d/dx(x^4 - x^2)= 4x^3 - 2xDifferentiating again, we get:
d^2y/dx^2 = d/dx(4x^3 - 2x)= 12x^2 - 2Substituting these values into the equation for r, we have:
r = (1 + (4x^3 - 2x)^2)^(3/2) / |12x^2 - 2|Now we can calculate the tangential and normal accelerations at the point (2, 12) by substituting x = 2 into the respective equations.
at = (1/2) * (4 + 16(2)^6 - 16(2)^4 + 4(2)^2)^(-1/2) * (96(2)^5 - 64(2)^3 + 8(2))an = [(2)^2] / [(1 + (4(2)^3 - 2(2))^2)^(3/2) / |12(2)^2 - 2|]Calculating these values will give us the tangential and normal accelerations at the point (2, 12).
About VelocityVelocity is a vector quantity that indicates how fast an object is moving. The magnitude of this vector is called speed and is expressed in meters per second.
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Describe how an amperimeter is used and perform a circuit diagram as an example that illustrates the use of Instrument to perform the measurement .
Describe how a voltimeter is used and a circuit diagram as an example illustrating the use of Instrument to perform the measurement .
Describe how an ohm - meter is used and perform a circuit diagram as an example that illustrates the use of Instrument to perform the measurement
1) An ammeter, also known as an amperemeter, is used to calculate the electrical current flowing through a wire. An ammeter is installed in a series in a circuit so that all of the current flowing through the circuit passes through the ammeter.
2)A voltmeter is an electrical instrument used to calculate the potential difference between two points in an electrical circuit. The voltmeter is connected in parallel with the section of the circuit being checked in this case.
3)An ohmmeter is an electrical instrument used to calculate electrical resistance. The ohmmeter can be linked to the circuit in one of two ways. The two methods are as follows: a series connection, and a parallel connection.
1) An ammeter should be linked in series in a circuit as shown in the diagram below to ensure that the electrical current flowing through the circuit passes through the ammeter:When calculating currents, ammeters must be used. To determine the present, ammeters are connected in series with a circuit. An ammeter's display is given in amperes (A).
2)The voltmeter's probe or probes should be connected in parallel with the load resistance to measure the voltage across the load resistance as shown in the diagram below:
When determining voltage, voltmeters should be used. To check the voltage of a specific circuit component, voltmeters are connected in parallel to the component under review. A voltmeter's display is given in volts (V).
3)In the series connection method, the ohmmeter is connected in series with the resistance being measured, whereas in the parallel connection method, the ohmmeter is connected in parallel with the resistance being measured.
A circuit diagram in which an ohmmeter is connected in parallel with the resistance being measured is shown below:When calculating resistance, ohmmeters are used. To measure resistance, ohmmeters are connected in series or parallel to the circuit component being tested. The ohmmeter's display is given in ohms (Ω).
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most of the energy we use on earth comes from the sun—how does that energy(light and thermal)end up?
As ____energy in our food
As ____energy of wind or moving water
As ____energy that was our lights
As ____energy when we move around
Formed at the boundary of two converging continental tectonic plates is called a Mountain formation
True
False
Answer:
True
Explanation:
At the boundary of two converging continental tectonic plates, a mountain is formed. This is because the collision results in the emergence of mountains.
The density of both plates are nearly similar and lesser than that of the mantle below. This makes the two plates grind together and bulge upward. The Himalaya mountain range is one of such example. In a continental - continental crust collision, mountains are formed.As the grinding continues, the builds upward more and more.
The primary cause of weather is due to ______
in temperature around the Earth.
differences
similarities
coldness
abnormalities
Answer:
the answer is differences hope this helped :)
The main cause of weather is differences in temperature around the Earth.
What is the Weather?The weather could define the atmosphere. It could be either hot, cold, cloudy, or stormy. In the case of the earth, the phenomena of weather should arise at the bottom layer of the planet's atmosphere. Due to this, the main cause of the weather should be of differences.
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A projectile is fired straight upward from Earth's surface with a speed that is half the escape speed: If R is the radius of Earth; the highest altitude reached, measured from the surface, is: A) RI4 B) R/3 C) Ri2 D) R E) 2R
The highest altitude reached, measured from the surface, is R i^2 which is option (c ) .
A projectile is a body that is hurled or thrown with some velocity into the air and then falls to the ground under the force of gravity. The most common examples of projectiles are a ball that is thrown from a height, a bullet that is fired from a gun, a cannonball that is launched from a cannon, or a stone that is thrown up into the air.
Each of these objects moves through the air and experiences the effects of gravity.
The highest altitude that a projectile reaches can be computed using the following formula;
h = (v₀² / 2g), Where h is the maximum height of the projectile, v₀ is the initial velocity of the projectile, and g is the acceleration due to gravity. When the projectile reaches its highest altitude, its final velocity is zero because it has stopped moving upwards.
Therefore, using the formula; v² = v₀² + 2gh, Since the projectile is fired straight upward, its final velocity will be zero.
Hence, using the formula for escape velocity, we have;
ve = √(2GM/R), where G is the gravitational constant, M is the mass of the earth, and R is the radius of the earth.
Half the escape velocity would be; v₀ = ve/2. Substituting this value in the formula for the maximum height gives;
h = (v₀² / 2g) = ((ve / 2)² / 2g) = (Ri² / 2) = Ri².
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What type of local wind would most likely occur in the image below?
mountain breeze
sea breeze
valley breeze
land breeze
The correct answer is sea breeze
Answer:
Land breeze.
Explanation:
The breeze that blows from the land toward the sea after sunset. The land cools more quickly than the ocean, cooling the air above it. The warmer air above the water continues to rise, and cooler air from over the land replaces it, creating a breeze.
An electron fired as a straight line from point A, located at 30μm from the center of a spherical atom of radius 10μm and travelling towards it at the rate of 1 m/sec barely grazes the periphery of the atom. How much time is needed for the electron to move from point A till it tangentially grazes the atom? a 10 μ secs b 20 √2 μ secs c 30 μ secs d This can't be determined
The time needed for the electron to move from point A until it tangentially grazes the atom is 40 μsec, which corresponds to option c) 30 μsecs.
An atom is the basic unit of matter, consisting of a nucleus at the center and electrons orbiting around it.
To determine the time, we can calculate the distance traveled by the electron from point A to the tangential grazing point. The distance is equal to the sum of the radius of the atom (10 μm) and the distance from the center of the atom to point A (30 μm). This gives us a total distance of 40 μm.
Since the electron is traveling at a rate of 1 m/sec, we need to convert the distance from micrometers to meters. 40 μm is equal to 0.00004 m.
To find the time, we divide the distance by the rate of motion: 0.00004 m ÷ 1 m/sec = 0.00004 sec.
Since 1 second is equal to 1 million microseconds, we convert the time to microseconds: 0.00004 sec × 1,000,000 μsec/sec = 40 μsec.
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The sun is located in
the Crab Nebula.
the Andromeda Nebula.
the Milky Way Galaxy.
the Snickers Galaxy.
Answer:
The sun is located in the Milky Way Galaxy.
Explain the image below in terms of Newton’s Laws.
The image given, is explained in terms of Newton's 1st law of motion.
What is Newton's 1st law of motion?Based on Newton's First Law of Motion (Inertia). An object at rest remains at rest, and an object in motion continues in motion at a steady speed and in a straight path until operated on by an unbalanced force.
Newton's first rule of motion states that if a pan of water were being moved along a track, the water would tend to keep moving ahead. However, the water will appear to splash to the right while it goes to the left. Space is nearly a perfect vacuum, devoid of both gravity and matter. Think about a satellite travelling 17,500 mph around the Earth. If a rock were to be launched from the satellite, it would orbit the earth adjacent to the satellite at a speed of 17,500 mph.
Here, in the given image, it is shown that the sofa is remain in the place unless a person forcefully move it from one place to another.
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what causes wind to flow ?
Answer:
hi
Explanation:
as a result of the collision of hot and cold air
hope it helps
have a nice day
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Wind is the movement of air caused by the uneven heating of the Earth by the sun. ... Warm equatorial air rises higher into the atmosphere and migrates toward the poles. This is a low-pressure system. At the same time, cooler, denser air moves over Earth's surface toward the Equator to replace the heated air.
Hope it helps!
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What is the change in temperature for the aluminum wire? c what is the change in temperature for the steel wire? c what is the change in temperature for the lead pellets? c
Answer:
-79.6
-80
-81.2
Explanation:
Fart
What is the change in temperature for the aluminum wire?
-79.6
What is the change in temperature for the steel wire?
-80
What is the change in temperature for the lead pellets?
-81.2
Q3. Given the following table find the value of y when x=3 by interpolation using Newton's Divided Difference Q4. Using Lagrange's Interpolation method, determine the value of y if x is 13 from the following data
Q3. By using Newton's Divided Difference interpolation, the value of y when x=3 can be determined.
Q4. Using Lagrange's Interpolation method, the value of y can be determined for x=13 from the given data.
Interpolation methods are used to estimate the value of a dependent variable (in this case, y) when the independent variable (x) falls between two known data points. Newton's Divided Difference interpolation and Lagrange's Interpolation method are two commonly used techniques for this purpose.
To find the value of y when x=3 using Newton's Divided Difference interpolation, we can use the given table of data points and interpolate a polynomial function that fits the data. The coefficients of this polynomial can be determined using the divided difference formula. By substituting x=3 into the interpolated polynomial, we can calculate the corresponding value of y.
using Lagrange's Interpolation method, we can also determine the value of y for x=13. This method involves constructing a polynomial function that passes through the given data points. By using the Lagrange interpolation formula, which is based on weighted averages, we can calculate the value of y for the desired x=13.
Interpolation methods are valuable tools in data analysis, curve fitting, and prediction. They allow us to estimate values within a range based on known data points. By utilizing these techniques, we can make informed predictions and fill in missing information between data points.
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The force of attraction that a 37.5 μC point charge exerts on a 115 μC point charge has magnitude 3.05 N. How far apart are these two charges?
The force of attraction that a 37.5 μC point charge exerts on a 115 μC point charge has magnitude 3.05 NThe two charges, 37.5 μC and 115 μC, are attracted to each other with a force of magnitude 3.05 N.
Coulomb's law states that the force of attraction or repulsion between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Mathematically, it can be expressed as:
F = k * (|q1| * |q2|) / r^2
where F is the force of attraction or repulsion, k is the electrostatic constant (k = 8.99 × 10^9 N m^2/C^2), q1 and q2 are the charges, and r is the distance between the charges.
In this case, we have a force of 3.05 N, a charge of 37.5 μC (3.75 × 10^-5 C), and a charge of 115 μC (1.15 × 10^-4 C). We need to find the distance (r) between the charges.
Using Coulomb's law, we can rearrange the formula to solve for the distance:
r = √(k * (|q1| * |q2|) / F)
Substituting the given values:
r = √((8.99 × 10^9 N m^2/C^2) * ((3.75 × 10^-5 C) * (1.15 × 10^-4 C)) / (3.05 N))
Simplifying the expression:
r = √(39.18 m^2)
r ≈ 6.26 m
Therefore, the two charges are approximately 6.26 meters apart.
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Measure the given centimeters and millimeters above the ruler
Answer:
Actually, 4.5cm could be marked at the darker line between 4&5 in the ruler,
Or you can count 5 lines from 4 towards 5(towards your right) and the fifth line you count will be 4.5 and you can mark that as the asnwer
What is the kinetic energy of a 14kg object traveling at 10m/s
Answer:
Explanation:
kinetic energy=1/2*mass*velocity^2
=1/2*14kg*10^2
=7*100
=700 joule
What is the frequency of a wave traveling at 10 m/s with a wavelength of 2 m?
Answer:
5 Hz
Explanation:
Given:
Wave velocity ( v ) = 10 m / sec
wavelength ( λ ) = 2 m
We have to calculate Frequency ( f ) :
We know:
v = λ / t [ f = 1 / t ]
v = λ f
= > f = v / λ
Putting values here we get:
= > f = 10 / 2 Hz
= > f = 5 Hz
Hence, frequency of sound is 5 Hz.
planet 300 to his journey if the stance of the journey was 3000 miles at what average speed did the plane travel?
a 15.0-g paper clip is attached to the rim of a phonograph record with a diameter of 30.0 cm, spinning at 3.50 rad/s. what is the magnitude of its angular momentum?
Magnitude of its angular momentum is calculated as 0.0005 kgm²/s
What is angular momentum?
Angular momentum, is a property characterizing the rotary inertia of an object in motion about an axis that may or may not pass through the object . In physics, angular momentum is the rotational analog of the linear momentum.
I = mass moment of inertia
ω = angular velocity.
Given diameter = 30cm
Radius= 30/2= 15cm
= 0.15m
Angular velocity, ω = 3.5 rad/s
Given Mass= 15 g = 0.015 kg
I for disc =MR²/2
Angular momentum, L = Iω
L= (0.015 * 0.15² * 3.5)/2
= 0.0005 kgm²/s
magnitude of its angular momentum = 0.0005 kgm²/s
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Answer: 0.00118
Explanation:
help me please I can't get the final step
Answer:
\(\displaystyle m=\frac{2}{3},\ n=\frac{4}{3}\)
Explanation:
Dimensional Analysis
It's given the relation between quantities A, B, and C as follows:
\(\displaystyle A=\frac{3}{2}B^mC^n\)
and the dimensions of each variable is:
\(A=L^2T^2\)
\(B=LT^{-1}\)
\(C=LT^2\)
Substituting the dimensions into the relation (the coefficient is not important in dimension analysis):
\(\displaystyle L^2T^2=\left(LT^{-1}\right)^m\left(LT^2\right)^n\)
Operating:
\(L^2T^2=\left(L^mT^{-m}\right)\left(L^nT^{2n}\right)\)
\(L^2T^2=L^{m+m}T^{-m+2n}\)
Equating the exponents:
\(m+n=2\)
\(-m+2n=2\)
Adding both equations:
\(3n=4\)
Solving:
\(n=4/3\)
\(m=2-4/3=2/3\)
Answer:
\(\mathbf{\displaystyle m=\frac{2}{3},\ n=\frac{4}{3}}\)
A ball is thrown up at an angle. Neglecting air resistance, which of the following is true. Group of answer choices The horizontal component of the velocity is constant. The horizontal component of the velocity increase with time. The horizontal component of the velocity decreases with time. The horizontal component of the velocity increases, and then decreases.
Answer A is true. The horizontal component of the velocity stays constant.
When a ball is thrown up at an angle and air resistance is neglected, the horizontal component of velocity stays constant.
The term neglecting air resistance means that there is no air friction that will slow down the object as it travels.
This assumption is often utilized in physics experiments in order to better comprehend a concept.
What happens to the ball when it is thrown up in the air will be calculated.
The ball has an initial velocity with both vertical and horizontal components.
The vertical component of the velocity is directed upward and its value decreases as the ball rises higher. The horizontal component of the velocity remains constant throughout its flight.
Therefore, answer A is true. The horizontal component of the velocity stays constant.
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A dumptruck filled with sand moves 1.8 km/h when it begins to accelerate uniformly at a constant rate. After traveling 4.0 102 m, the truck's speed is 24.0 km/h. What is the magnitude of the truck's acceleration?
The acceleration of the truck is obtained from the calculation done as 0.055 m/s^2.
What is the magnitude of the truck's acceleration?We know that the acceleration is defined as the rate of the change of the velocity of the object with time and we can be able to obtain the acceleration by the use of the equations of kinematics as usual.
Initial velocity = 1.8 km/h or 0.5 m/s
Final velocity = 24.0 km/h or 6.67 m/s
Distance covered = 4.0 * 10^2 m
Then;
v^2 = u^2 + 2as
v = final velocity
u = initial velocity
a = acceleration
s = distance covered
a = v^2 - u^2/2s
a = (6.67)^2 - (0.5)^2/2 * 4.0 * 10^2
a = 44.4 - 0.25/800
a = 0.055 m/s^2
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x-ray telescope mirrors are very similar to optical telescope mirrors.true or false?
deloer je n'ai pas mla reponse a tas question
Therefore, the statement that "X-ray telescope mirrors are very similar to optical telescope mirrors" is FALSE since they are used for capturing and detecting different wavelengths of light. Optical telescopes detect and focus visible light while X-ray telescopes capture and detect high-energy X-ray radiation.
X-ray telescope mirrors are not very similar to optical telescope mirrors. The two are different because they have different types of wavelengths of light they detect. While optical telescopes reflect and focus visible light to produce images, X-ray telescopes capture and detect high-energy X-ray radiation that is outside the visible spectrum.
What are X-ray telescopes?
X-ray telescopes are scientific instruments that are designed to observe objects in space that emit X-ray radiation. The mirrors of X-ray telescopes are made of a special type of glass or metal that can reflect and focus X-rays in the same way that optical telescopes focus and reflect light. The main function of X-ray telescopes is to gather high-energy X-rays that are emitted by objects in space such as black holes, neutron stars, and other exotic celestial bodies. They can also be used to study the X-ray properties of galaxies, stars, and other astronomical objects.
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After a recent storm, one of the traffic lights in City Town, USA was damaged. Without this light back and working, the villagers of City Town cannot safely travel to get their favorite In-n-out burgers for lunch. Can you help them?
The traffic light has weight 273 N. Assume that all lines connected to the traffic light are in tension and are straight lines. Point O is the origin, having coordinates (0,0,0).:
Given coordinates for A, B, C and D,
xAxA = -12 m yAyA = 6 m zAzA = 9 m
xBxB = -12 m yByB = 7 m zBzB = -7 m
xCxC = 18 m yCyC = 12 m zCzC = 0 m
xDxD = -12 m yDyD = -3 m zDzD = 3 m
To fix the light, the cable dangling from point C must be attached to the light, which moves point D from its original location to the origin, O. Assume that the lengths of the wires between AD and BD can be adjusted as necessary.What are the tensions in each cable after the light has been fixed?
|FAD|= ?
|FBD|= ?
|FCD|= ?
Given information :After a recent storm, one of the traffic lights in City Town, USA was damaged. Without this light back and working, the villagers of City Town cannot safely travel to get their favorite In-n-out burgers for lunch.
Can you help them? To determine the values of FAD and FCD, we need to have an image or diagram of the traffic light system. Without that, we cannot determine the exact values of FAD and FCD. Therefore, we cannot provide an accurate answer to this question.
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