change in momentum during this time is 2166.71 kg m/s.
To find the change in momentum during this time, we can use the equation for momentum, which is:
momentum = mass x velocity
We can also use the equation for acceleration:
a = (vf - vi) / t
Where "a" is acceleration, "vf" is final velocity, "vi" is initial velocity and "t" is time.
We are given that the car's initial velocity is 18 m/s east, the acceleration is 1 m/s2, and the time is 1.57 s. We can use these values to find the car's final velocity:
vf = vi + (a x t)
vf = 18 + (1 x 1.57)
vf = 19.57 m/s east
Now that we know the final velocity of the car, we can use the equation for momentum to find the change in momentum:
change in momentum = mass x (vf - vi).
change in momentum = 1383 x (19.57 - 18).
change in momentum = 1383 x 1.57.
change in momentum = 2166.71 kg m/s.
So, during this 1.57s of time, the car's momentum changes from 18m/s to 19.57m/s east and total change in momentum is 2166.71 kg m/s.
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What is F Gm1m2 d2?.
The gravitational force which try pulls two objects with masses m1 and m2 apart over a certain distance is represented by the equation F = G[tex]m_{1} *m_{2}[/tex]/d^2. G, which represents the universal gravitational constant.
The product of each object's individual mass determines the gravitational force between them. The square of one object's mass determines how much gravity will pull on the other. If their mass is raised by a factor of two, the gravitational force between the two objects is quadrupled.
The formula F = G[tex]m_{1} *m_{2}[/tex]/d^2 describes the dimensions of G as the gravitational force that pulls two objects with point masses of m1 and m2 toward one another, and r represents the distance between them.
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How to find total distance traveled from position function?
Total distance traveled from position function is found by:
Differentiating the position function to get velocity function.Integrating the velocity function under proper limits.Example : Find the total distance traveled for a particle traveling in a horizontal motion from t = 0 to t = 5 seconds according to the position function:
s(t) = 8t^2 – 4t.
Step 1: Find the velocity function. The velocity function is the derivative of the position function. So, to find the velocity function you need to differentiate s(t) = 4t^2 – 2t, using the power rule and derivative of a constant rule:v(t) = 16t – 4
Step 2: Set the velocity function to zero, then solve, to find where the velocity function changes direction:v(t) = 16t – 4 = 0
16t – 4 (+ 4) = 0 (+ 4)
16t(/16) = 4 (/16)
t = 4/16 = 1/4
Step 3: Solve the position function for the starting and ending interval values (which are 0 and 5, according to the question), and any t-values you found in step 2:s(0) = 8(0)^2 – 4(0) = 0.
s(1/4) = 8(¼)^2 – 4(1/4) = -½
s(5) = 8(5)^2 – 4(5) = 180.
Step 4: Find the distance traveled between each point. These are vectors, so we have to use absolute values to find the distance:Between 0 and -½, distance = |-½ – 0| = ½ & Between -½ and 180, distance = |180 – (-½)| = 180½
Step 5: Add your values from Step 4 together to find the total distance traveled.½ + 180 ½ = 181
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The un,earth and moon are roughly pherical like a ball. How do we know that the earth i a phere and not flat
The evidences that the Earth is a sphere not flat.
When we watch a ship sail off to sea, the mast and flag appear to slowly sink.When we climb a tree, the farther we climb the farther our line of sight will extend to the horizon.The length of the shadow at different places on the Earth is not the same.Seeing the curvature of the Earth from an airplane during the flight.Watching the sunset from higher place will get a clear horizon than watching from the lower place.During the lunar eclipse, we will see that the Earth's shadow is round.The Earth is A SphereThe Earth we know, is a sphere that rotates on its axis for about 24 hours. It also revolves around the Sun for about 365 days. Like other celestial bodies, researchers say that the Earth is round, a sphere.
There are many evidences that the Earth is a sphere. Some of them are as explained above.
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Categorize processes related to transform boundaries. Sort the following processes those likely to be related to a transform boundary or those likely associated with other boundary types
Categorization processes related to transform boundaries is earthquakes, other boundaries include divergence, convergence, subduction.
What activities take place at the boundaries of transform plate?Tectonic plates colliding horizontally at a plate boundary constitutes the third type of plate boundary. A transform plate boundary is what we have here. Huge stresses that result from the plates rubbing against one another can split rock under certain conditions, causing earthquakes. These cracks are referred to as faults in these locations.
At a transform plate boundary, the grinding motion between the plates causes shallow earthquakes, significant rock displacement to the side, and a significant expansion of the crustal zone.
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What is one kg mass Class 8?.
Gretchen runs the first 4. 0 km of a race at 5. 0 m/s. Then a stiff wind comes up, so she runs the last 1. 0 km at only 4. 0 m/s.
Answer: Answer: The constant speed is 4.76 m/s
What is Velocity ?
-- Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time.
- It is vector quantity.
-- SI unit is M/s.
Determination of the time taken for first 4 Km
Distance = 4 Km = 4 × 1000 = 4000 m
Speed = 5 m/s
Time 1 =?
Time 1 = distance / speed
Time 1 = 4000 / 5
Time 1 = 800 s
Determination of the time taken for the last 1 Km
Distance = 1 Km = 1 × 1000 = 1000 m
Speed = 4 m/s
Time 2 =?
Time 2 = distance / speed
Time 2 = 1000 / 4
Time 2 = 250 s
Determination of the constant speed
Total distance = 4000 + 1000 = 5000 m
Total time = 800 + 250 = 1050 s
Constant speed =?
Constant speed = Total distance / total time
Constant speed = 5000 / 1050
Constant speed = 4.76 m/s
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How do I reduce latency on my website?.
There are several ways to reduce latency on your website: optimize images, minimize HTTP etc.
Use a Content Delivery Network (CDN): A CDN stores copies of your website on servers located in different geographic locations. When a user requests your website, they are served the copy from the nearest server, reducing the amount of time it takes for the website to load.
Optimize images and other media: Large images and other media files can slow down your website. Optimize these files by reducing their size without sacrificing quality.
Minimize HTTP requests: Every time a browser requests a file from your website, it adds to the latency. Minimize the number of requests by using CSS sprites, combining files, and using a script loader.
Use a caching plugin: Caching stores a copy of your website on the user's browser, reducing the amount of time it takes for the website to load on subsequent visits.
These are some ways to reduce latency on your website, implementing these tips will help to improve the load time and user experience of your website.
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What is the per unit value Mcq?.
The per-unit value of any quantity is defined as the ratio of its actual value in any unit to its base or reference value in the same unit. The price per unit has no dimensions.
What is per unit value?Per unit is a way of expressing a quantity's value in terms of a reference or base quantity. Each system variable or quantity in a per unit system is normalized with respect to its own base value. Because quantities expressed per unit are the same regardless of voltage level, calculations are simplified. The per-unit value of any quantity is defined as the ratio of its actual value in any unit to its base or reference value in the same unit. The price per unit has no dimensions. In the power system industry, the per-unit system is widely used to express voltages, currents, powers, and impedances of various power equipment. It is commonly found in transformers and AC machines.
Here,
Any quantity's per-unit value is defined as the ratio of its actual value in any unit to its base or reference value in the same unit. The price per unit is dimensionless.
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What happens to the value of potential energy and kinetic energy as the coaster is moving throughout the entire coaster ride do not consider air resistance or friction?.
As the roller coaster is moving throughout the whole coaster ride ignoring air resistance or friction, then the value of potential energy is highest at the top point and the value of kinetic energy is maximum at the bottom point.
Air resistance can affect a roller coaster as it is in the air, and it provides a force that is countering the movement of the roller coaster. However, with no air resistance, the roller coaster has a maximum quantity of potential energy and no kinetic energy at the top. As the roller coaster begins moving down to the bottom, its gravitational potential energy starts decreasing and the kinetic energy starts increasing. And at the bottom, kinetic energy is highest while there is no potential energy.
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What is probability sampling Mcq?.
Probability sampling is a method of selecting a sample from a population in which each member of the population has a known, non-zero probability of being selected for the sample.
This means that every individual in the population has an equal chance of being selected for the sample. The purpose of probability sampling is to ensure that the sample is representative of the population from which it is drawn, and that the results of the study are used for generalization.
Random sampling is one of the examples. Simple random sampling, each member of the population has an equal probability of being selected for the sample. For example, if you wanted to conduct a survey of 100 people to determine their opinions on a certain topic, you could use simple random sampling to select 100 people from a list of all eligible participants. You would randomly select 100 names from the list and survey those individuals.
Another example is stratified sampling. In stratified sampling, the population is divided into subgroups, or strata, and a random sample is taken from each stratum. This can be useful if the population is heterogeneous, and you want to ensure that the sample is representative of different subgroups within the population. For example, if you wanted to survey the opinions of men and women on a certain topic, you could divide the population into two strata (men and women) and take a random sample of 50 men and 50 women.
Probability sampling is important because it allows for generalization of findings to the population, and it allows for estimation of sampling error.
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A man walk at a velocity of 3 m per econd before accelerating at a rate of 2 m quare for 4 what i hi velocity at end of the 4
Answer: Velocity of the particle is 11m/s.
What is velocity ?
-- Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time
-- Velocity is vector quantity.
-- Standard unit for the measurement is Metre/Second .
In this question we have given.
Initial velocity = 3m/s
Acceleration = 2m/s^2
We ned to find the velocity after 4 sec.
In this module we use
which is V = U + at
here :; V= 3 + 4× 2
V = 3 + 8.
V = 11 m/s .
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When the value of g at the surface of the earth is 9. 8 m/s2 then what will be the value of g at a place 480 km above the surface of the earth radius of the earth 6400 km?.
The value of g at a place 480 km above the surface of the earth will be 8.49 m/s². If the value of g at the surface of the earth is 9.8 m/s².
Acceleration due to gravity of the earth is mathematically defined as
g = GM/R²......(1)
Where G is the universal gravitational constant, M is the mass of the earth, and R is the radius of the earth or the distance of the object on which the acceleration due to gravity of the earth is to calculate.
R = 6400 km
h = 480 km
g₁ = GM/(R+h)²......(2)
On dividing the equation (2) by equation (1)
g₁/g = R²/(R+h)²
g₁ = gR²/(R+h)²
g₁ = 9.81 × (6400)²/(6400+480)²
g₁ = 8.49 m/s²
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What is the expression for momentum Mcq?.
p = m v . The equation demonstrates because momentum is directly related to an object's motion (m) and velocity (v).
In the actual world, what is momentum?Almost every action that involves motion has momentum. It is an important tenet of physics. In athletics, the term "momentum" is frequently used. For instance, if a team is moving forward and trying to stop, it will be difficult.
How do you define momentum?singular nouns Momenta, plural for momentums. force or rate of motion; impulse, as of a tangible thing or sequence of events: Going downward, the automobile picked up speed.
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is copper a good conductor of heat
Yes, copper is a good conductor of heat.
Copper is a good conductor of heat along with silver, aluminum etc. What makes copper a good conductor of heat is that it has free electrons moving inside it. The electrons can move freely through it which makes transfer of heat and its dissipation faster. The free electrons makes the conduction of heat and electricity possible. These electrons are called conduction electrons.
That's why copper is used in many cooking utensils, fuses and as a heat sink in electrical appliances. It is a good conductor of electricity also.
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What do sound energy and thermal energy have in common?
Answer: Answer below :)
Explanation:
What do sound energy, radiant energy, and thermal energy all have in common? answer choices They're all forms of kinetic energy
What does this experiment tell you about the amount of energy transfer that is required to change the temperatures of three different liquids?.
Each of the liquids had a different rate of energy transfer. The thermal energy within the thing increases if the object's mass rises while its temperature remains constant.
The term "energy transfer" describes the transfer of energy from one location to another. Consider the electricity that enters your wall socket, travels through a charger, and finally enters a battery. From the electrical outlet to the battery, energy is being transmitted.
One instance of energy transmission by radiation is the Sun's heating of the Earth. Another illustration is the heating of a space by an open-hearth fireplace. The things in the room receive some of the heat that is radiated by the flames, coals, and hot bricks.
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A change in the magnetic field surrounding the conductor induces a voltage in the conductor. this induced voltage is known as ___.
A change in the magnetic field surrounding a conductor induces a voltage in the conductor. This induced voltage is called self-induction.
A changing magnetic field induces an additional emf or voltage in a conductor. This induction of additional voltage is called self-induction because it is induced in the conductor itself. A coil of wire induces a current when it is placed in a changing magnetic field. Something creates an electric field around the wire, forcing a charge around it. (Early charges cannot become magnetic because they are not moving). Electromagnetic induction is the process by which an electric current is induced by a changing magnetic field.
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Where does the energy for the water cycle come from?
Answer: Answer below :)
Explanation:
Water & Energy Cycle
When energy from the Sun reaches the Earth, it warms the atmosphere, land, and ocean and evaporates water. The movement of water from the ocean to the atmosphere to the land and back to the ocean—the water cycle—is fueled by energy from the Sun.
Changes in the energy cycle will ripple into the water cycle. As greenhouses gases retain more energy in the Earth system, the extra energy enhances the water cycle. An enhanced water cycle means more extreme weather events, particularly floods and droughts.
How long does a Ferris wheel go around?.
The longest Ferris wheel go around is 48 hours, 8 minutes and 25 seconds. This is recorded by Guinness World Records that break by An employee of Chicago's Navy Pier. The normal trip took around 15-20 minutes in three or four round where each round took 3 minutes.
What is Ferris wheel?A Ferris wheel or a Giant Wheel or an observation wheel define as an amusement ride that made of a rotating upright wheel which has multiple passenger-carrying instrument that normally called as passenger cars, gondolas, capsules, cabins, tubs, or pods attached to the rim in such a way that as the wheel turns, they are usually stay upright by gravity.
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What unit of sound is measured in Mcq?.
The decibel is the unit of measurement for sound. dB stands for decibel.
What is decibel?The decibel is a unit of measurement that is one-tenth of a bel. It is the logarithmic ratio of two values of a power or root-power quantity. Two signals with one decibel difference in level have a power ratio of 101/10 or a root-power ratio of 10120. The decibel (dB) is a logarithmic unit of measurement for sound level. It is also widely used in electronics, communications, and signals. The dB is a logarithmic measure of a ratio. Power, sound pressure, voltage, or intensity are all examples of ratios.
Here,
The decibel is the unit of sound measurement. dB is an abbreviation for decibel.
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What is the condition for two vectors A and B to be parallel?.
Two vectors A and B are parallel if they have the same direction, opposite direction, or are proportional.
The vectors have the same direction: If vector A and vector B point in the same direction, they are parallel. This means that the angle between the two vectors is 0 degrees.
The vectors are of opposite directions: If vector A and vector B point in opposite directions, they are also parallel. This indicates that there is a 180° angle between the two vectors.
The vectors are proportional: if two vectors are parallel, the ratio of their magnitudes is a constant, which means that A = k B, where k is a constant.
It's important to note that vectors can also be anti-parallel, which means they are pointing in opposite directions, but they are not parallel as they are not in the same direction.
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A crane is used to lift a steel beam on a building site. The crane does 250 kJ of work against gravity
in order to lift the steel beam a vertical distance of 20 m. Calculate the weight of the steel beam.
The weight of the steel beam is 126.53 kg
What is gravity?Gravity is a force that attracts two objects with mass towards each other. The strength of the gravitational force between two objects depends on their masses and the distance between them.
The force of gravity is described by Newton's law of universal gravitation, which states that the force between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them.
We can use the equation
W = mgh to find the weight of the steel beam where W is workM is mass G is acceleration due to gravity H is height.W = mgh
m = W / (g * h) = 250 kJ / (9.8 m/s^2 * 20 m) = 126.53 kg
Therefore, The weight of the steel beam is 126.53 kg.
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what is the wavelength of a beam of light having a frequency of 6 × 10^17 hz?
The wavelength of the of a beam of light having a frequency of 6 × 10^17 hz is 5*10^(-8)m or 50nm.
Data given as per the question:
Frequency of the wavelength: 6 × 10^17 hz
As we know that,
Speed of light = Frequency × wavelength
Speed of light (c)=3×[tex]10^{8}[/tex] m/s.
Frequency (f)=6×10[tex]10^{14}[/tex] Hz (given)
Wavelength (λ)=?
As per the formula,
λ= [tex]\frac{c}{f}[/tex]
= 5*10^(-8)m or 50nm
The wavelength of light can be defined as the distance between the two successive crests or troughs of the light wave. It is actually denoted by the Greek letter lambda (λ). Hence, the distance between either one crest or trough of one wave and the next wave is known as wavelength.
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What is the angle between the vector A 3i 4j K and B =- 4i 4j 4k?.
The angle between the vectors A and B is arccos(0.5) equal to 60 degree
The angle between two vectors can be found using the dot product, which is a measure of the similarity between the two vectors. The dot product is calculated by multiplying the corresponding components of the two vectors and then summing the results. In this case, the dot product of vectors A and B is (3 ×-4) + (44) + (k4k)
= -12 + 16 + 0 = 4.
The dot product is related to the angle between the two vectors by the following equation:
cos∅ = A × B / (A × B)
Where theta is the angle between the two vectors, A . B is the dot product of the two vectors, and A and B are the magnitudes (lengths) of the vectors. To find the angle you need to find the inverse cosine of this value.
Using the dot product formula,
= A . B / (A × B) = 4 / (3^2 + 4^2 + k^2) * (-4^2 + 4^2 + 4^2) = 0.5.
Then, taking the inverse cosine of 0.5 gives an angle of arccos(0.5) = 60 degrees between the vectors A and B.
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What is K in a vector?.
A plane wave's wave vector, also known as the k vector, is a vector that, at least in the case of isotropic optical material, points in the wave's direction of propagation. It always faces away from the wavefronts.
The x, y, and z-axes' respective vectors are three significant unit vectors that are frequently employed. The unit vectors in the x, y, and z axes are I j, and k respectively.
The unit vector in the x axis' direction is the unit vector. Three perpendicular axes will serve as the vector v's markers in the three-dimensional plane (x, y, z-axis). In mathematics, I stands in for the unit vector along the x-axis.
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A worker moves a table, sliding it across the level floor a distance of 3.0 m using a force of 45 N. Calculate the work done by the worker.
Answer:
135 J
Explanation:
Let's take a look at the formula for Work, W=Fd, F being force (N) and d being distance (m). We are given the force and distance so plugging it into the formula, W=45N(3.0m), we get 135 J of work.
Hope this helps!
What is the SI unit of acceleration Mcq?.
Because the unit of speed is the meter per second and the unit of time is the second, the SI unit of acceleration is the meter per second squared, or m / s2.
What is acceleration?In mechanics, acceleration is defined as the rate of change of an object's velocity with respect to time. Vector quantities are accelerations. The orientation of an object's acceleration is determined by the orientation of its net force. The rate of change of velocity is defined as acceleration. Acceleration usually indicates that the speed is changing, but this is not always the case. When an object moves in a circular path at a constant speed, it is still accelerating because its velocity direction changes. The definition of acceleration is. The rate at which velocity changes with respect to time. Because it has both magnitude and direction, acceleration is a vector quantity.
Here,
Because the meter per second is the unit of speed and the second is the unit of time, the SI unit of acceleration is meter per second squared, or m / s2.
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classify each statement as an example of adhesion, cohesion, or surface tension.
Examples of adhesion are option A and C, cohesion are option B and E, and surface tension are option D and F.
Adhesion refers to the tendency of dissimilar particles or surfaces to cling to one another. Water molecules that cling to plant cell wall and water molecules that cling to the side of a beaker are examples of adhesion. Cohesion refers to the tendency of similar or identical particles or surfaces to cling to one another. Water molecules attracted to each other, or a drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface are examples of cohesion.
Surface tension refers to the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension enables objects with a higher density than water to float on a water surface without becoming even partly submerged. A sewing needle floats when it is placed gently on top of water in a bucket, or a water strider runs across a pond without breaking the surface are examples of surface tension.
Note: The question is incomplete. The complete question probably is: Classify each statement as an example of adhesion, cohesion, or surface tension. A) Water molecules cling to the side of a beaker. B) A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface. C) Water molecules cling to plant cell wall D) A water strider runs across a pond without breaking the surface. E) Water molecules are attracted to each other F) A sewing needle floats when it is placed gently on top of water in a bucket.
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Each statement can be classified as follows:
Adhesion: Water molecules cling to plant cell wall, Water molecules cling to the side of a beaker.
Cohesion: Water molecules are attracted to each other, A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface.
Surface tension: A sewing needle floats when it is placed gently on top of water in a bucket, A water strider runs across a pond without breaking the surface.
Adhesion, cohesion, and surface tension are three important properties of liquids that affect their behavior.
Adhesion is the attractive force between two different substances, such as the attraction between a liquid and a solid surface.
Cohesion is the attractive force between molecules of the same substance, such as the attraction between liquid molecules.
Finally, surface tension is the property of a liquid that allows it to resist an external force, such as the surface of a liquid appearing as if it is stretched. Together, these three properties help explain the behavior of liquids, such as how they move, flow, and interact with other materials.
Although a part of your question is missing, you might be referring to this question:
Classify each statement as an example of adhesion, cohesion, or surface tension. A) Water molecules cling to the side of a beaker. B) A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface. C) Water molecules cling to plant cell wall D) A water strider runs across a pond without breaking the surface. E) Water molecules are attracted to each other F) A sewing needle floats when it is placed gently on top of water in a bucket.
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Particles q1 = -66.3 UC, q2 = +108 uC, and
93 = -43.2 uC are in a line. Particles q1 and q2 are
separated by 0.550 m and particles q2 and q3 are
separated by 0.550 m. What is the net force on
particle q2?
The sum total of all forces which are acting on an object is known as the net force. A mass can accelerate due to the net force.
What is net force?The net force can be defined as the vector sum of all the forces which act upon an object. It is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel out each other.
Here, r₁₂ = 0.550m and r₂₃ = 0.550m. Then the distance from the first charge to the third one will be:
r₁₃ = r₁₂ + r₂₃ = 0.550 + 0.550 = 1.1m
According to the Coulomb's law, the net force on particle q₂ will be equal to the sum of the forces on particle q₂ from the particle q₁ and q₃.
F₃+ = F₁₃ +F₂₃ = q₁q₂/r²₁₃ + k q₃q₂/r²₂₃
Where, k = 9 × 10⁹ N m²/C²
Substituting numerical values, we obtain:
F₃ = 9 × 10⁹ (-66.3 × 10⁻⁶)(-43.2 × 9 × 10⁻⁶)/ 1.45² + 9 × 10⁹ × 108 × 10⁻⁶ (-43.2 × 10⁻⁶) / 0.550²
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Answer: -74.12
Explanation:
Credit to the comment above! this answer works for Acellus! :D
What is the unit in which torque is measured Mcq?.
SI Torque Unit
Considering the equation Torque = Power X Distance Torque is defined in newton-meters, whereas length is measured in meters and pressure is measured in newtons.
What is the torque measurement device?Result for an image What is the Mcq unit used to measure torque,
dynamometer, a tool for calculating the amount of mechanical force or power delivered by a rotor shaft. All strength dynamometers are essentially thrust devices; the shaft speed is monitored separately. Power is the result of torque (moving force) and angular speed.
Describe Torque Mcq?The propensity of a force to initiate or modify an object's rotational motion is known as torque. Moment or instant of force are other names for torque. Torque is vector form.
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