If you have the other values, use the momentum equation p = m•v to determine an object's momentum or velocity.
When the momentum of each automobile is known, the after-collision velocity may be calculated by dividing the momentum by the mass (v=p/m). We can predict some things about the relative velocities before and after the impact if kinetic energy and momentum are conserved. Both before and after the impact, the relative velocity's magnitude is the same.
The impact velocity is calculated using the formula below. Take the square root of the result to determine the impact velocity by multiplying the height by the acceleration caused by gravity twice.
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What comes to mind when you hear the term acid?
A Brnsted-Lowry acid or Lewis acid is a molecule or ion that can either donate a proton (the hydrogen ion, H+) or establish a covalent bond with an electron pair.
What is acid?Proton donors, also known as Brnsted-Lowry acids, are the first class of acids. Proton donors, also referred to as Arrhenius acids, generate the hydronium ion H3O+ under the unique situation of aqueous solutions.
The Arrhenius theory was expanded upon by Brnsted and Lowry to take non-aqueous solvents into account.
A hydrogen atom is typically bound to a chemical structure in a Brnsted or Arrhenius acid that is still energetically advantageous after the loss of H+. Aqueous Arrhenius acids have distinguishing characteristics that serve as a useful definition of an acid.
Therefore, A Brnsted-Lowry acid or Lewis acid is a molecule or ion that can either donate a proton (the hydrogen ion, H+) or establish a covalent bond with an electron pair.
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Light can travel through materials that you cannot see through, like wood or aluminum foil.
It is accurate to say that light can pass through opaque materials like wood and aluminum foil.
Describe light.Electromagnetic radiation that appears to human eyes as light. The spectrum of electromagnetic radiation's wavelengths is very wide. Light carries information about time and space. For the study of optics, optical communications, and a wide range of other related, both established and emerging technologies, this characteristic serves as the fundamental building block.
Examples of technologies that manipulate light include lasers, holography, and fiber-optic communication systems. In a vacuum, all forms of light travel at the same speeds as the electromagnetic spectrum, of which only a small portion is visible to humans. Furthermore, it is without a doubt possible for non-visible light to pass through wood, including radio waves, x-rays, and photons with gamma energy.
Because of this, it is true that light can pass through opaque materials like wood and aluminum foil.
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Complete question " TRUE OR FALSE Light can travel through materials that you cannot see through, like wood or aluminum foil".
What is the coefficient of gravity?.
The gravitational coefficient (g = 9.8) is a metric used in physics to express the intensity of gravitational interactions between mass-containing objects. In the real world, this amount never changes.
On Earth, gravity (or the acceleration brought on by gravity) equals 9.81 meters per second squared due to the size of the planet and the distance between its surface and its center. The gravitational constant of the Earth is 9.8 meters per second squared.
The acceleration due to gravity is 9.81 meters per second squared. The gravitational constant, denoted by the capital G, is a physical empirical constant that is used to compute the gravitational effects in both Sir Isaac Newton's law of universal gravitation and Albert Einstein's theory of general relativity.
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Which example provides a complete scientific description of an object in motion? question 7 options: the hiker followed the north trail a distance of two kilometers in thirty minutes. The tiger had to run at 50 kilometers per hour across the field to catch the zebra. The hockey player sent the puck flying toward the north goal to score the winning point. The vibration of the jackhammer broke through the south-facing rock in under 10 seconds.
Answer: Thus, the correct option for this question is D.
What do you mean by Motion?
--A Motion may be characterized as a type of phenomenon through which an object or thing may change its position with respect to the time duration.
-- Physically, it may be defined in terms of displacement, velocity, acceleration, speed, etc.
--The vibration of the jackhammer broke through the south-facing rock in under 10 seconds describes the process of oscillation.
-- The hockey player sent the puck flying toward the north goal to score the winning point illustrating the force.
--The tiger had to run at 50 kilometers for an hour across the field to catch the zebra deals with the motion but in future. But now, a tiger is in the rest state.
Therefore, the correct option for this question is D.
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A heater marked 60W evaporates
6x10-³ kg
of boiling water in 60 seconds. What is the
specific latent heat of vaporization of water in
Jkg
Answer:
L = E / M energy input / water evaporated (J/kg)
E = 60 J / s 60 J input in 1 sec
L = 60 J / (.006 / 60) kg = 600,000 J / kg
The specific latent heat of the vaporization of water is 6×10⁵ J/kg.
The amount of heat required to evaporate a certain mass of water can be calculated using the formula:
Q = ml
where Q is the heat required, m is the mass of water evaporated, and l is the specific latent heat of vaporization of water.
In this problem, we know that a heater with a power output of 60W evaporates 6x10⁻³ kg of boiling water in 60 seconds. We can calculate the amount of heat supplied by the heater using the formula:
Q = Pt
where P is the power of the heater and t is the time for which it is operating. Substituting the given values, we get:
Q = 60 W × 60 s
Q = 3600 J
We can now calculate the specific latent heat of the vaporization of water by rearranging the formula:
l = Q/m
Substituting the given values, we get:
l = 3600 J / (6×10⁻³kg)
l = 6×10⁵ J/kg
Therefore, the specific latent heat of the vaporization of water is equal to 6×10⁵J/kg.
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What unit should be used for the lever arm moment of force?.
Because moment of force (bending moment) and torque are equal to a force times a rotation distance (moment arm or lever arm), their SI unit is N*m.
A lever arm time is defined?The distance between the force's line of action and the centre of moments, also known as the second arm or lever arm, is perpendicular. Moment: M = (F) = Force x Length (d) The exact location in which the force induces rotation may be the Center of Moments.
The fundamental lever equation is what?image outcome
Levers are devices that allow for the application of a small force over a longer distance at one end while applying a high force over a shorter distance at the other.
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Calculate the resultant of two forces that act on a point, as indicated in the diagram. (193 N 355") F. - 200 N 40⁰ F₁ = 150 N 25°
The free-body diagram should have coordinate axes. Make x and y components out of the forces acting on the item. The x and y components of all forces should be added to determine the x and y components of the resultant force. Finally, using its x and y components, determine the magnitude and direction of the resulting force.
How to find the resultant force?The resultant force can be calculated using Newton's Second Law if we are aware of an object's mass (m) and the acceleration (a) that the forces acting on it cause. Indeed, Newton's Second Law states that the force F alone is what causes an object with mass m to accelerate.
F = ma
Our outcome force is this force F. Thus, we can write:
R = ma
Which implies that the resultant force R has the same direction as a and an amount equal to the product of ma.
For instance, if five forces are applied to a 1.5 kilogram box, causing it to accelerate to a north-west speed of 2.0 m/s2, the resulting force will be focused in that direction and have a magnitude of 1.5 kg x 2.0 m/s2 = 3.0 N.
To find the force that results from the forces acting on an item, we frequently need to know the acting forces.
According to experiments, the resultant force R is the vector sum of the forces that are acting on an object at the same time (F1, F2,... ):
R = F1 + F2 + ...
The forces have been represented as vectors, which is more complicated because vectors have a magnitude and a direction that we need to take into account when computing the total. Note that this is not only the sum of the force magnitudes.
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Read the following scenario and explain (1)whether all the elements of a
negligent tort are present. If not, what elements are missing? (2) Who is a
fault and why? Scenario: Jenny is driving her car and rocking out to loud
music. She does not hear the siren from the ambulance driving down her
lane until the ambulance is just 15 feet from her. As soon as she notices
the ambulance she swerves to the side of the road without checking her
blind spot. She runs into Michael who was in the bicycle lane next to her.
Your answer
To win a driver negligence claim, the victim (plaintiff) must prove four things: OBLIGATIONS, BREACH OF DUTY, CAUSE OF INJURY AND DAMAGE.
What is breach of duty?A breach of duty occurs when there is a duty of care that is not complied with. Breach of duty is an important part of negligence cases. For example, you have a duty to warn other drivers to drive below the speed limit and to warn other drivers not to drink and drive.If you violate this obligation by exceeding the speed limit or driving under the influence of alcohol. A breach of duty occurs when there is a duty of care that is not complied with. Breach of duty is an important part of negligence cases. For example, you have a duty of care to other drivers who drive below the speed limit and a duty of care not to drink and drive.To learn more about breach of duty from the given link:
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find the magnitude of the resultant force and the angle it makes with the positive x-axis.
In order to find the magnitude of the resultant force and the angle it makes with the positive x-axis, you will need to know the magnitudes and directions of the individual forces acting on the object, as well as their point of application.
This information can then be used to calculate the vector sum of the forces using vector addition. The magnitude of the resultant force can be found using the Pythagorean theorem, and the angle it makes with the positive x-axis can be found using trigonometry.
To find the magnitude of the resultant force, you can use the Pythagorean theorem to calculate the length of the hypotenuse of a right triangle formed by the individual forces. The magnitude of the resultant force is equal to the square root of the sum of the squares of the magnitudes of the individual forces.
To find the angle that the resultant force makes with the positive x-axis, you can use trigonometry. The angle is found by taking the arctangent of the y-component of the resultant force divided by the x-component of the resultant force.
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What is the rate of acceleration of the object between 0 and 4 seconds?.
Between 0 seconds and 4 seconds, the object rate of acceleration is 1 m/s². Thus, the correct answer is D.
The rate of acceleration of an object can be calculated by using the formula:acceleration = (final velocity - initial velocity) / time.In this case, the initial velocity is 1 m/s, the final velocity is 5 m/s, and the time is 4 seconds. Therefore, the calculation would be:
acceleration = (5 - 1) / 4 acceleration = 1 m/s²This means that the object is accelerating at a rate of 1 m/s² between 0 and 4 seconds. This can also be visualized as the object's velocity increasing by 1 m/s every second.
This question should be provided with answer choices, which are:
A. 1 m/sB. 0 m/s²C. -1 m/s2D. 1 m/s2The correct answer is D.
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Is reduce latency and improve performance good?.
Reducing server latency means your web resources load faster and improve overall page load times for your visitors.
High latency causes time delays and makes the game unenjoyable. Low latency is ideal as it means you can experience/performance smoother gameplay. In general, acceptable latency (or ping) is 40-60 milliseconds (ms) or less, but speeds over 100ms usually mean noticeable delays while gaming. Low\reduced latency means there is a strong and reliable network connection, reducing the chance of connection loss or delays. Latency refers to the delay in time, so good network latency means low latency. Longer response time (higher latency).
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What phase is it when molecules move away from each other?.
When molecules are in the gaseous phase they tend to move away from each other as no intermolecular forces is acting upon them.
Particles in a gaseous phase are well separated with no regular arrangements. The gas particles vibrate and move freely at very high speeds.
The states of matter depends on the balance between the kinetic energy of the individual particles (atoms or molecules) and the intermolecular forces. the kinetic energy keeps the molecules apart and moving around, and is a function of the temperature of the substance and the forces try to draw the particles together.
Heating and cooling can also change the kinetic energy of the particles in a substance and so it can be said that we can change the physical state of a substance by changing its temperature.
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What is the SI unit of gravitational force and gravity?.
The SI unit of measurement for gravity is called a newton since it is a force (N). The force required to accelerate a body with a mass of 1 kg by 1 m/s² is known as a newton.
The weight of an object determines how much gravitational pull it has on the Earth. An object's weight is the force acting on it in a gravitational field, and its mass is regarded as a measure of that object's inertia. The acceleration caused by gravity connects the two forces when they are applied to Earth's surface. Fg = mg.
The work (or energy expended) by a force of one newton (N) operating over a distance of one meter is equivalent to one joule (m). A force of one newton causes a mass of one kilogrammes (kg) to accelerate by one meter per second (s) per second. So, one joule is equivalent to one newton metre.
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What are the 3 methods for solving equations?.
3 methods of solving an equation are 1) Graphical method 2) Substitution method 3) Cross multiplication method.
Graphical method: To solve linear equations graphically, first draw the graph for both equations in the same coordinate graph and locate the intersection point on the graph.
Substitution method: To solve a linear equation using this method, first, take the value of one variable separately from any of the equations. Then, substitute the value of this variable in the second equation and solve it.
Cross multiplication method: Linear equations can be easily solved using this method. In this technique is used to simplify the solution. Following formula is used for solving 2 variable equation:
x /(b₁ c₂ − b₂ c₁) = y / (c₁ a₂ − c₁ a₁) = 1 /(b₂ a₁− b₁a₂)
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Sunlight is reflected, absorbed, and transmitted by earth's atmosphere. Which are the chief constituents of the electromagnetic energy that reaches earth's surface? select the two correct answers. (1 point).
Sunlight is reflected, absorbed, and transmitted by Earth's atmosphere. Which are the chief constituents of the electromagnetic energy that reaches Earth's surface is Ultraviolet Light and Visible Light.
What is solar radiation?The three forms of solar radiation—visible, ultra violet, and infrared—are separated based on their wavelength and intensity.
Visible radiationSince radiation is visible to people, it has a name. It focuses a lot of the energy from the sun and is the most basic type of electromagnetic radiation.
Ultraviolet radiationThe least quantity of solar energy is present in ultraviolet rays. Because of its shorter wavelength, it is not visible.
Infrared radiationNearly 50% of solar energy is included in infrared radiation, which is likewise invisible to humans. It is longer than light since its length ranges from 780 nanometers to 1 millimeter.
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The complete question is as follows:
Sunlight is reflected, absorbed, and transmitted by Earth's atmosphere. Which are the chief constituents of the electromagnetic energy that reaches Earth's surface? Select the two correct answers.
Radio Waves
Ultraviolet Light
Far Infared (lower energy Infared)
Near Infared (higher energy Infared)
Visible Light
What will happen to 4G phones when 5G comes?.
The functionality of 4G devices will not change. While they invest in the rollout of 5G, mobile companies are expected to keep existing 4G network operational.
Your smartphone could be a 3G device if it is older than a few years.To find out if your cell operator intends to phase down its 3G services, check with them.
With the introduction of fifth generation, or "5G," technology, cellular network are getting an upgrade. Consumers may anticipate new apps and enhanced user experiences, just as in prior generations.
Beyond mobile phones, significant improvements in connection made possible by 5G could enable applications such as telemedicine and aiding local communities in managing resources like traffic lights and water supply. A increasing number of connected devices will be supported by 5G, which is anticipated to boost the effectiveness and quality of all the goods and services that customers already use and enjoy. Other possible uses include self-driving automobiles, virtual reality, and augmented reality. Find out more about what to anticipate once 5G arrives:
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Joshua's Subaru Forrester was detected exceeding the posted speed limit of60 kilometers per hour, how many kilometers per hour would h ehave been traveling over the limit if he had covered the a distance o f1 0 kilometers in 0.1 hours? If you want to express this value as a velocity, what other information would you need to provide?
6.2137119 miles per hour is equal to 10 km/h. (8 digits rounded) Speed is measured in kilometers per hour.
What additional information is needed for velocity that is not needed for speed?Distance must be known in order to calculate velocity, but not the other way around. Speed does not take into account the direction in which an object is moving, whereas velocity does. Velocity does not take into account the amount of time it took an object to traverse; speed does.According to the equation v = s/t, velocity (v) is a vector quantity that quantifies displacement (or change in position, s), over change in time (t). Speed (or rate, r) is a scalar number that represents the amount of time (t) spent travelling over the distance (d), as shown by the equation r = d/t.An object's velocity is its rate of movement in a specific direction. These cars' velocities may be comparable despite their speeds.To learn more about kilometers refer to:
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Kristen's calculations involving lobsters found that the averagelobster, when placed on the ground, was able to cover 20 centimeters in 5 seconds, what was the average speed of the lobster?
Answer:
4 cm/s
Explanation:
Speed = distance over time
What are the three parts of a proof?.
Induction proofs always include three components. The foundation, inductive hypothesis, and inductive step are these.
What Makes a Two-Column Proof?1) Mathematical statements are written in the first column.
2) You should list the justifications for your statements in the second column.
3) The sentences are numbered and are presented in a logical sequence.
Any evidence must have both statements and reasons, which are its two essential parts. The statements are the assertions you make throughout your proof that lead to the conclusion that you are trying to support. a methodical explanation that leads to a conclusion concerning a geometric assertion using definitions, axioms, postulates, and previously established theorems. Direct proofs and indirect proofs are the two main categories of proof.
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How do you memorize Newton's laws?.
Newton's 1st, 2nd, 3rd, and 4th laws are 1) Law of inertia 2) Force's law and 3) Action-reaction relationship.
Newton's 1st law is also called the law of inertia. A balling rolling on the ground stops after some time due to the opposite force of friction working between the ball and the ground.
Newton's 2nd law of force states that the rate of change of momentum of an object is equal to the force applied by the object. When a bullet is fired from a gun change in the momentum of the bullet generate the force that cause the bullet to be fired and to generate the recoil velocity in the gun.
Newton's 3rd law states the action-reaction relationship. When a rocket is launched from the earth, it applies a force on the ground that generate the enough reaction force that causes the rocket to generate orbital velocity.
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a trolley A of mass 2kg at 5 meter per second collide with a stationary trolley B of mass 3kg after the collision the two travel together at 2 meter per second find (a) what is the momentum of A before the collision (b) what is the momentum of A after the collision (c) what is the kinetic energy of A before collision (d) what is the kinetic energy of each trolley after collision (e) during the collision A kinetic energy gained by B is less than the kinetic energy gained by A, how much kinetic energy is un accounted for?
a) The momentum of trolley A before the collision is (2 kg) * (5 m/s) = 10 kg*m/s.
b) The momentum of trolley A after the collision is (2 kg) * (2 m/s) = 4 kg*m/s.
c) The kinetic energy of trolley A before the collision is 1/2 * (2 kg) * (5 m/s)^2 = 25 J.
d) The kinetic energy of trolley A after the collision is 1/2 * (2 kg) * (2 m/s)^2 = 2 J. And the kinetic energy of trolley B after the collision is 1/2 * (3 kg) * (2 m/s)^2 = 3 J.
e) The amount of kinetic energy that is unaccounted for is the difference between the initial kinetic energy of trolley A and the final kinetic energy of trolley A and trolley B. This is 25J - (2J + 3J) = 20 J.
It's important to note that the total momentum of the system is conserved during the collision, meaning that the momentum of trolley A before the collision is equal to the total momentum of trolley A and B after the collision. Also the total kinetic energy of the system is not conserved during the collision as some of the energy is transferred to internal energy of the system and other forms of energy.
What is the formula of linear momentum Class 9?.
P = mv is the equation for linear momentum. Conservation of momentum refers to the fact that the overall amount of momentum remains constant.
Where does momentum exist in the real world?Momentum underpins almost all motion-based actions. This principle of physics is crucial. Momentum is a word frequently used in sports. It will be challenging to stop a team that is moving forward, for example.
What is the meaning of momentum?exclusive nouns Momentum is referred to as a momentum. force, speed, or impulse, as to a material entity or series of events: The car accelerated down and accelerated.
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A force of 20.0 N is applied to a 3.00 kg object for 4.00 seconds. Calculate the impulse experienced by the object
The impulse experienced by the object is 80.0 N-second.
What is impulse?In physics, the term "impulse" is used to characterize or measure the impact of force operating gradually to alter an object's motion. It is often stated in Newton-seconds or kilograms per second and is denoted by the symbol J.
Mass of the object = 3.00 kg
Time interval = 4.00 seconds
Force applied = 20.0 N
Hence, the impulse experienced by the object is = 20.0 N × 4.00 seconds
= 80.0 N-second.
So, the impulse experienced by the object is 80.0 N-second.
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Determine the magnitude and coordinate direction angles of the resultant force acting on the bracket?
For force F2 cos2 c + cos2 c + cos2 45 + cos2 * 60 = 1 cos c = 0.5 c = 60 degree, force F1 = 450 * (cos(45) * cos(30) j - cos(45) * sin(30) i + sin(45) k).
What is a force in science?
In science, the term "force" has a particular definition. At this point, describing a force as a push or a pull is perfectly acceptable. There is no such thing as a force that an object "has in it" or "contains." A force is applied to one thing by another.
What different types of force are there?
A force is a push or pull that an object feels as a result of interacting with another object. The Force of Friction is one of many forces. Tension force Standard Force.
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Why the tools meant for cutting and piercing always have sharp edges
The tools meant for cutting and piercing always have sharp edges because they have less area of contact.
Less area of contact means that the tools can apply more pressure while cutting. It also becomes easier as the surface area is less, more pressure will be applied on the object.
According to the formula P= F/A, force is directly proportional to the pressure, and according to the theory of less area of contact, cutting tools always have sharp edges not blunt edges.
For example, tools used for cutting edges such as blades, knives, etc., are provided with sharp edges to cut things easily.
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What do you mean by lever arm?.
Lever arm, noun (plural lever arms (physics) the separation between the axis and the force application point.
How might a lever arm look like?What else do we mean by a lever arm image,
Class 3 levers include bent arms. Elbow serves as the pivot, and the forearm serves as that of the lever arm. The forearm is bent by the biceps muscle against the gravity of the wrist and any load that the hand may be holding.
The lateral force of a beams is what?In a segment of reinforced concrete, the lever arm is the distance between the couple's lines of action that provide compressive and tensile force.
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A car slams on its brakes creating an acceleration of -3.2 m/s2. It comes to rest after traveling a distance of 210 m. What was its velocity before it began to accelerate?
The answer should be 36.6 m/s -Show work!
The velocity of the car before it began to accelerate is 36.6 m/s.
What is the initial velocity of the car?
The initial velocity of the car is calculated by applying the third kinematic equation.
v² = u² - 2as
where;
v is the final velocity of the caru is the initial velocity of the cara is the acceleration of the cars is the distance travelled by the carWhen the car stops, the final velocity, u will be equal to zero.
v² = u² - 2as
0 = u² - 2as
u² = 2as
u = √ (2as)
u = √ ( 2 x 3.2 x 210 )
u = 36.6 m/s
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find the ratio of acceleration due to gravity of two planets if their radii are in ratio of 1:3
Answer:
Ratio of g = 9:1
Explanation:
Given,
The ratio of the radius of planets = 1:3
let the mass of the planets be M
We can say that,
The radius of planet 1 = 1x
The radius of planet 2 = 3x
We know that g = GM/[tex]R^{2}[/tex]
g on first planet = GM / [tex]x^{2}[/tex] , g on second planet = GM/ 9[tex]x^{2}[/tex]
g on first planet: g on second planet = GM/[tex]x^{2}[/tex] * 9[tex]x^{2}[/tex] / GM
= 9:1
What are the 4 methods in finding the solution of a quadratic equation?.
A quadratic equation may be solved using a variety of approaches, including factorization, completing this same square, quadratic formula, as well as graphing.
A quadratic equation may be solved using a variety of approaches, including factorization, completing this same square, quadratic formula, as well as graphing. These were the four general approaches for solving a quadratic problem.
Quadratic equations seem to be polynomial equations with degree one of these in one variable of the form f (x) = an x 2 + b x + c where a, b, c, R and. It is the generalized case of a quadratic equation in which is referred to as the leading coefficient and therefore is referred to as the absolute term of f. (x).
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What are the disadvantages of ballistic stretches?.
The biggest drawback of ballistic stretching, aside from the risk of damage, is that it doesn't give the stretched muscle enough time to adjust to the extended position.
Instead can make the muscles tighten up by continually inducing the stretch response (or myotatic reflex). Overstretching or bouncing might be detrimental. Microtrauma or rips in the muscles or connective tissue may result from it. As a result, this can produce a flaw that manifests itself later on in the run. Stretching should be done for a set amount of time, usually between 5 and 10 minutes.
Reduced maximal strength when done before strength training; decreased long-term training benefit when done before or during strength; increased chance of injury when done before strength or endurance training.
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