The momentum of the van after the collision will be -9600 kg m/s.
What is momentum?Momentum is a concept in physics that is used to describe an object's resistance to changes in motion. It is based on the principle of inertia, which states that an object will remain in a state of rest or constant motion unless acted upon by an outside force. Momentum is calculated by multiplying the mass of an object by its velocity. Momentum is a vector quantity, meaning that it has both magnitude and direction. Momentum is also conserved, meaning that the total momentum of any closed system remains constant.
Momentum is a measure of an object's mass multiplied by its velocity. Before the collision, the momentum of the van was 9600 kg m/s (1200 kg x 8 m/s). After the collision, both vehicles will be travelling in the opposite direction, meaning that the momentum of the van will be the same as before, but in the opposite direction. Therefore, the momentum of the van after the collision will be -9600 kg m/s. The change in momentum, or delta momentum, of the van after the collision is the difference between the before and after momentum, or 9600 kg m/s.
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How to calculate weight from mass and gravitational field strength?.
An SUV with a surface area of 27 square meters travels at 35 meters per second. What is the drag if the car has a drag coefficient of 0.6 and the air density is 1.3 kilograms per cubic meter?
12,899 N
33,538 N
9,951 N
25,799 N
The drag force on the SUV is 12,899.25 N.
option A is the correct answer.
What is the drag force of the SUV?The drag force if the car has a drag coefficient of 0.6 and the air density is 1.3 kilograms per cubic meter is calculated as;
F = ¹/₂ρv²CA
where;
ρ is density of airv is the velocityC is the drag coefficientA is the surface areaThe drag force on the SUV is calculated as follows;
F = ¹/₂ x ( 1.3 kg / m³) x ( 35 m/s )² x ( 0.6 ) x ( 27 )
F = 12,899.25 N
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What are some of the barriers to minority groups participating in the field of psychology in the 19th and early 20th centuries
Some of the barriers to minority groups participating in psychology in the past were C. A, B, C, and D.
What prevented minorities from getting in psychology ?When psychology was a relatively new field in the 19th and 20th century, minorities were not allowed much to practice it for a mix of reasons. Some of these reasons were intentional, others were as a result of the intentional reasons.
An intentional reason was the limiting of colleges to only White males attending and also the segregation of schools which limited minority education. Some people did not just want to hire minorities in psychology and many believed minorities were not as intelligent as White men.
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What energy depends on mass and speed?.
The energy that depends on the mass and speed attained is called kinetic energy. Kinetic energy is calculated by using the equation KE = [tex]\frac{1}{2} mv^{2}[/tex].
Kinetic energy is the energy of an object which is moving. For moving an object which is in rest or in uniform motion, we must apply a force. The work done to apply the force is transferred as energy and the object begins to move or attain a different velocity. This energy is called kinetic energy.
Kinetic energy can be transferred between objects. For example collision between the billiard balls. Kinetic energy relates to mass and velocity of the object. If mass is doubled, kinetic energy doubles, When the velocity is doubled, the kinetic energy becomes four times, as KE∝ v².
So energy that depends on mass and velocity is kinetic energy.
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What are the two ways ATP is produced during respiration?.
Cellular respiration is like a battery charger if ATP is like a battery. Substrate-level phosphorylation and oxidative phosphorylation are the two mechanisms used by our cells to produce ATP.
Plants possess three. They generate ATP when photosynthesis is taking place by using solar energy. During aerobic cellular respiration, glucose and oxygen combine to create ATP, which the cell can utilise. As byproducts, carbon dioxide and water are produced. The general equation for aerobic cellular respiration is: ATP is produced when glucose and oxygen combine in cellular respiration.
Glyceraldehyde-3-phosphate 1,3 diphosphoglycerate results in the first generation of ATP. Second, when phosphoenolpyruvate breaks down into pyruvate, ATP is created. For each of the two 3-phosphate molecules, these processes happen twice. Thus, during glycolysis, a total of 4 ATPs are created.
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when boating on federally controlled waters in an 18-foot boat, what equipment are you legally required to have on board?
When boating on federally controlled waters in an 18-foot boat, you are legally required to have certain safety equipment on board.
This includes a life jacket or personal flotation device (PFD) for each person on board, a throwable flotation device such as a ring buoy or cushion, and a fire extinguisher.
Along with that, sound-producing devices such as a horn or whistle, navigation lights for use during night time and restricted visibility conditions, and a visual distress signal such as a flare or flag.
Additionally, boats with a motor must also have a backfire flame control device and a ventilation system if the boat is equipped with an enclosed engine compartment.
It is also strongly recommended to have a first aid kit, a marine radio, and a signaling device such as a mirror or flashlight on board.
It's important to check with local authorities as well as the boating laws of the state you are in as they may have additional rules. Failure to have the required equipment on board can result in fines and penalties.
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What is the equation which relates torque to force and lever arm?.
The lever arm is defined as the perpendicular distance between the axis of rotation and the force's line of action. torque τ = r × F
What's the connection between torque and force?Torque is a form of force applied to an item that causes it to rotate around an axis. Force is an action that alters the motion of an item.
A three-newton force applied two metres from the fulcrum, for example, produces the same torque as a one-newton force applied six metres from the fulcrum.
Torque is used by levers to help humans lift or move items. Torque is defined as the product of a force and its distance from a fulcrum.
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define the relationship between the ecg and the pulse wave. explain why the timing of the qrs complex in the ecg and the start of the pulse wave do not coincide.
The ECG (electrocardiogram) records the electrical activity of the heart, while the pulse wave is the physical manifestation of this activity that can be felt at the wrist or neck.
The timing of the QRS complex in the ECG and the start of the pulse wave do not coincide because the electrical activity propagates through the heart before the mechanical contraction of the heart muscle.
The QRS complex in the ECG corresponds to the depolarization of the ventricles, which is the electrical signal that triggers the mechanical contraction of the heart muscle.
The ECG records the electrical activity of the heart, which is faster than the mechanical contraction of the heart muscle. The pulse wave is the physical manifestation of the mechanical contraction of the heart muscle, which can be felt at the wrist or neck.
The pulse wave travels through the blood vessels to the surface of the skin, which takes some time. Therefore, the timing of the QRS complex in the ECG, which represents the electrical activity, and the start of the pulse wave, which represents the mechanical contraction, do not coincide.
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What is the SI unit of length 6 Mcq?.
A meter is the metric system's standard unit of length (m). One meter (m) is divided into 100 equal centimeters (cm).
What is SI unit?The International System of Units, abbreviated SI in all languages and sometimes pleonastically as the SI system, is the modern version of the metric system and the world's most widely used measurement system. The SI is a coherent system of measurement that begins with seven base units: the second (symbol s, the unit of time), the metre (m, length), the kilogram (kg, mass), the ampere (A, electric current), the kelvin (K, thermodynamic temperature), the mole (mol, amount of substance), and the candela (cd, luminous intensity). These are widely accepted and followed around the world. The SI unit for mass is kilogram, the SI unit for length is meter, and the SI unit for time is second.
Here,
A meter is the standard unit of length in the metric system (m). One meter (m) is equal to 100 centimeters (cm).
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A truck i traveling outh at a peed of 70 km/h toward an interection. A car i traveling eat toward the interection at a peed of 80 km/h. What i the velocity of the car relative to the truck?
The velocity of the car relative to the truck is 106 km/h.
The concept of reference frames was first introduced to discuss relative motion in one or more dimensions. When we say an object has a certain velocity, then this velocity is with respect to some frame that is known as the reference frame. In everyday life, when we measure the velocity of an object, the reference frame is taken to be the ground or the earth.The velocity of the car with respect to Earth is [tex]V_{CE}[/tex] = 80 km/h
The velocity of the truck with respect to Earth is [tex]V_{TE}[/tex] = −70 km/h
Using the velocity addition rule, the relative motion equation we are seeking is:
[tex]V_{CT} = V_{CE}+ V_{TE}[/tex]
Here, [tex]V_{CT}[/tex] is the velocity of the car with respect to the truck, and Earth is the connecting reference frame.
Since we have the velocity of the truck with respect to Earth, the negative of this vector is the velocity of Earth with respect to the truck:
[tex]V_{ET} = -V_{TE}[/tex]
The vector diagram of this equation is shown in figure.
We can now solve for the velocity of the car with respect to the truck:
[tex]V_{CT} = \sqrt{80^{2} + 70^{2} } = 106 km/h[/tex]
So the velocity of the car relative to the truck is 106 km/h.
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What is gravity year 7?.
The force that draws things together is gravity. It is the force that attracts anything in the direction of the earth's center.
The mass of the items and the separation between them determine how strong gravity is. An object's gravitational pull is stronger the more mass it has.
The gravitational attraction between two items decreases with increasing distance. Because of this, an object drops to the ground when you drop it.
You are drawn into the middle of the planet by gravity. In addition, gravity plays a role in the development of galaxies as well as other huge formations in space, as well as maintaining planets as well as other heavenly bodies in orbit around the Sun.
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Of the five zones to consider when discussing human fitness which do you believe is the most important and why do you believe this
I believe the most important zone is cardiovascular, as it is essential for maintaining a healthy heart and lungs.
why human fitness important? Human fitness is important for several reasons. Firstly, it helps maintain good physical health. Regular physical activity helps to strengthen bones and muscles, reduce the risk of heart disease, maintain a healthy weight, and reduce the risk for other chronic diseases. Secondly, fitness can improve mental health. Exercise releases endorphins, which can reduce stress, improve mood, and increase self-confidence. Additionally, fitness can help improve cognitive functioning. Research has shown that physical activity can improve focus and concentration, and can lead to better academic performance. Lastly, regular physical activity can help improve sleep quality. Exercise can help people fall asleep faster and stay asleep longer, leading to increased energy and alertness during the day. In conclusion, human fitness is important for physical, mental, and cognitive health. Regular physical activity can lead to a healthier and happier lifestyle.To learn more about human fitness refer :
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What is the formula for the mean of the sampling distribution of p?.
The population proportion, sometimes referred to as sampling distribution mean of p is a statistic of central tendency that expresses the average value of a group of sample proportions.
The formula for the mean of the sampling distribution mean of p is given by:
μp = p
where "p" is the population proportion. This formula states that the mean of the sampling distribution of p is equal to the population proportion. This is known as the "Law of Large Numbers" which states that as the sample size increases, the sample proportion will become closer to the population proportion.
It is important to note that this formula assumes that the population is large, and the sample is random and taken from the population, so that the sample proportion will serve well for an approximate value of p.
This formula is also based on the assumption that the sample is large enough that the Central Limit Theorem applies, which states that the sampling distribution is estimated to be normal despite population distribution shape.
In summary, the formula for the mean of the sampling distribution of p is μp = p. It states that the mean of the sampling distribution of p is equal to the population proportion. This formula is based on the assumptions that the population is large, the sample is random and large enough, and the Central Limit Theorem applies.
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The series is shown in over 100 countries. About 300 million people watch it every day. This makes The Bold and the Beautiful the most watched television series in the world. The first episode was shown on March 23, 1987 on the CBS network. The series was created by the soap opera writer William J. Bell and his wife, Lee Phillip Bell. It is the only American soap opera to have its daily episodes translated into Spanish for the Hispanic viewers in the United States. The series is set in Los Angeles, California. It tells the story of the Forrester family, who owns a fashion empire called Forrester Creations. The major members of the family are Eric Forrester (played by John McCook), the president of Forrester Creations, his wife Stephanie (Susan Flannery), their eldest son Ridge (Ronn Moss) and Brooke Logan (Katherine Kelly Lang), who was married to both the father and the son. She owns most of Forrester Creations. This is because she created BeLieF, a formula which earned much money for the company. There used to be a second fashion company called Spectra Fashions. It was Forrester’s main competitor. The conflicts between the Forrester and the Spectra families was one of the major themes of the story.
More than a 100 nations broadcasted series. The Bold and the Beautiful teasers for the upcoming CBS soap opera hint at more conflict.
What does the earth's horizon look like?The line dividing the Earth's surface from the sky is known as the horizon. Earth-sky horizons and celestial horizons are the two basic categories of horizons. There are various sub-types of horizons for both Earth-sky and celestial horizons. Earth-sky horizons include the local horizon, regional horizon, and sea level horizon.
What is the horizon that is lit?The particle horizon, also known as the cosmological horizon, comoving horizon, or cosmic light horizon, is the furthest a particle's light may have travelled before reaching an observer during the early universe's history.
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PLEASE HELP RN
A ball is thrown horizontally at 7.7 m/s from the top of a hill 59.6 m high. How far from the
base of the cliff does the ball hit the ground?
The horizontal distance dx is calculated using the formula dx = vx * t, where vx is the ball's speed in meters per second and t is the duration of its flight.
How do you calculate the horizontal ball throw's speed?The horizontal velocity is calculated by dividing the horizontal displacement by time. In this case, Vx is equal to 4 meters per second.
How do I figure out the range?To get the range, locate the greatest observed value of the variable and deduct the least observed value (the minimum).
t_flight = t_fall
h = 0.5 * g * t^2
59.6m = 0.5 * 9.8 m/s^2 * t^2
t^2 = 59.6 m / 4.9 m/s^2
t^2 = 12.1632
t = 3.48s
Solving for the horizontal distance dx
dx = vx * t
dx = 7.7m/s * 3.48s
dx = 26.7m
The ball hit the ground at 26.7m from the base of the cliff.
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What best explains a parallel force?.
A parallel force is a force that acts in the same direction as the motion of an object. The best explanation for a parallel force would be Newton's laws of motion. According to Newton's first law, an object at rest will remain at rest, and an object in motion will continue in motion in a straight line at a constant speed unless acted upon by an unbalanced force.
Therefore, a parallel force, acting in the same direction as the motion of an object, will increase or decrease the speed of the object but not change its direction of motion.
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. A parallel force will cause acceleration, that is a change in the velocity, of the thing. The greater the force, the greater the acceleration, and the smaller the force, the smaller the acceleration.
This means that if an object is already moving in a certain direction and a parallel force is applied, the object will accelerate in that direction.
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Determine the magnitude of the resultant force and its direction, measured counterclockwise from the positive x axis.
Point P moves counterclockwise around the circle, starting from the positive x-axis. Its angle is 90° when it reaches the positive y-axis (one-fourth of the way around the circle).
Its angle is 180° when it reaches the negative x-axis (and is now halfway around the circle). A combined force that is smaller than either individual force is created when two forces engage in opposition to one another. Subtract the magnitude of the smaller force from the magnitude of the bigger force to determine the resultant force. The smaller force and the resultant force both have the same direction. The x-axis and the y-axis are perpendicular axes in this case. We have the angle that the vector makes with the x-axis.
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At which position does the child on the swing have the most kinetic energy?
The greatest kinetic energy of the boy is at position C
Where is the most kinetic energy?We have to note that the kinetic energy is the energy that is possessed by the object that is in motion. We know that there are two forms of the mechanical energy and these are the kinetic energy and the potential energy and this is due to to the position of the object.
We know that at the point where the child returns to the point of the starting there would be a maximum kinetic energy and this is at position C.
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How is paddling a canoe doing work? How does the shape of the canoe make paddling easier?
canoeing is a popular paddle sport with a long history bottom can go faster and is easier to paddle because its shape reduces friction.
What shape is a canoe?Flat. The most common shape found in basic, recreational canoes. Canoes with a flat hull shape have great primary stability (they're difficult to tip when upright and on calm water), but when they're put on edge, that stability decreases.
What Newton's law is paddling a canoe?Newton's Second Law of Motion explains one set of factors that affect how fast your boat will move through the water. The lighter your boat and the stronger your paddler, the faster your boat will go. opposite reaction. In your boat, your paddler will push his/her paddle into the water.
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canoeing is a popular paddle sport with a long history bottom can go faster and is easier to paddle because its shape reduces friction.
What shape is a canoe?Flat. The most common shape found in basic, recreational canoes. Canoes with a flat hull shape have great primary stability (they're difficult to tip when upright and on calm water), but when they're put on edge, that stability decreases.
What Newton's law is paddling a canoe?Newton's Second Law of Motion explains one set of factors that affect how fast your boat will move through the water. The lighter your boat and the stronger your paddler, the faster your boat will go. opposite reaction. In your boat, your paddler will push his/her paddle into the water.
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What is work write its SI unit and formula and example?.
Work is a unit of energy that results from exerting a force on the body that causes it to move. The formula W = F s cosθ denotes work done, where F denotes force applied, s denotes displacement, and = Angle between force and displacement. Joule is the SI unit of work.
What is work?Work in physics is the energy transferred to or from an object by applying force along a displacement. In its most basic form, work equals the product of force strength and distance traveled for a constant force aligned with the direction of motion. Work is the transfer of energy caused by a force acting on an object as it moves. The work done by a force on an object is calculated as the product of the magnitude of the force multiplied by the magnitude of the displacement multiplied by the cosine of the angle between them.
Here,
Work is a type of energy that is produced when a force is applied to the body, causing it to move. Work done is denoted by the formula W = F s cosθ , where F denotes force applied, s denotes displacement, and = Angle between force and displacement. The SI unit of work is the joule.
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Is mass a force in physics?.
Mass is not a force in physics. The amount of matter that makes up an object is expressed by its mass, which is expressed in kilogrammes.
Even though the terms force, mass, and acceleration are usually employed incorrectly. Force is a physical phenomenon that, when applied to an item, causes it to accelerate in the direction from which the force was applied. The amount of matter that makes up an object is expressed by its mass, which is expressed in kilogrammes.
Acceleration is the rate at which an object's velocity alters while moving in the same direction as the unbalanced force. When the forces are in balance, there is no net force and hence no movement. The Newton's second law, which also concerns how an object moves, connects these three ideas.
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what type of magnet is used for the coil in a relay?
A relay typically uses an electro magnet as the coil. When an electric current flows through the coil, it creates a magnetic field that can actuate the relay's internal mechanism to close or open a switch.
What is function of electromagnet inside a relay?An electromagnet is a type of magnet that creates a magnetic field using an electric current. The electromagnet performs multiple roles in a relay. The electromagnet's primary job is to activate the relay's internal mechanism, which makes it possible for the switch contacts to close or open in response to an electric current flowing through the coil.
The armature of the relay, which is in charge of closing or opening the switch contacts, can also be attracted to or repelled by the electromagnet. Additionally, it serves as a control input for the relay, which helps to regulate power signal. Galvanic isolation between the two circuits can be achieved by using the electromagnet to isolate or separate the control circuit from the load circuit.
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What is the magnitude of 3i 4j?.
Magnitude of 3i + 4j is 5 unit.
A vector's length, or magnitude, is its most fundamental physical characteristic. As a symbol, ∥a∥ stands for the magnitude of the vector a.
Using the components and Pythagoras' theorem, you may determine the magnitude of force vectors. Imagine the x-coordinate of the force as the base of a triangle, the y-coordinate as the height of the triangle, and the total force as the hypotenuse.
To find the magnitude, we can use this following formula:
∥a∥ = √ ( a₁² + a₂² )
in this case, we are given that:
a₁ = 3
a₂ = 4
Hence, the magnitude is
∥a∥ = √ ( a₁² + a₂² )
∥a∥ = √ ( 3² + 4² )
∥a∥ = √25
∥a∥ = 5 unit
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What is the MCQ answer?.
The distance or length between two successive crests or troughs of a wave is known as its wavelength.
What does wavelength mean?
The wavelength of a wave provides details about its length. The distance between the "crest" (top) of one wave and the crest of the next wave is known as the wavelength. The wavelength may also be calculated by taking a measurement from the bottom of one wave to the bottom of the next, with the same outcomes.
What makes it a wavelength, and why?
Electromagnetic radiation, such as radio waves, light waves, and infrared (heat) waves, moves across space in certain patterns. Every wave has a unique form and size. The "wavelength" is the separation between peaks.
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Note: The correct question would be as bellow,
What is called a wavelength MCQ with answers?
What is law social science?.
Law is a productive form of social science. It is serving as an indicator for the social change. Law also changes along with changes in society.
Society and law are closely related. Law is a natural guide for social life, and this is increasing with economic, scientific, and technological progress. Law is a form of social science. Society and law are closely related. Popular social science majors include psychology, political science, and economics. Law is concerned with the control and regulation of human behavior and the promulgation of rules that direct behavior in socially beneficial ways and it can be said that the role played by law in the realization of social science is extremely important.
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What is the magnitude of vector A 3i?.
The magnitude for the vector 3i is 3.
Magnitude is a "distance or else quantity," according to the definition given in physics. It shows how an object moves when it is in motion, whether that movement is absolute, relative, or of a certain size. It serves as a way to describe something's size or scope. Magnitude is a broad term used in physics to describe size or distance.
A force's strength is quantified by a number called its magnitude. Take a force of 10 N, for instance, in the direction of the east. The phrase "towards east" denotes a direction, and "10" represents the force's magnitude. In other words, magnitude can be thought of as the "value" or "amount" of any physical quantity.
Magnitude of a vector 3i is:
M = [tex]\sqrt{9} \\[/tex]
M =3
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A 1355 kg roller coaster car starts rolling up a slope at a speed of 18 m/s
The maximum height reached by the roller coaster is 16.53 m.
What is maximum height reached by the roller coaster?
The maximum height reached by the roller coaster is calculated by applying the principle of conservation of energy.
potential energy of the roller coaster at maximum height = kinetic energy at the lowest point
P.E = K.E
mgh = ¹/₂mv²
h = ( v² ) / ( 2g )
where;
v is the speed of the roller coaster at the lowest pointg is acceleration due to gravityh = ( 18² ) / ( 2 x 9.8 )
h = 16.53 m
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How do you solve torque problems?.
rFsin() is the term of torque. In other ways, twist is the sum of the (the distance between the pivot and the tip at which force is applied) or the force vector, where 'a' is the angle of r and F.al lever arms).
What is the torque solution formula?Result for an image How are torque issues solved?
The formula for torque is rF=rFsin(r). Torque is, in other words, the cross product of the shortest path (the length between the pivot point and the point at which load is exerted) and the pressure vector, where 'a' is the angle of r and F.
How are problems involving net torque solved?Approach to Solving the Issue: Identifying Net Torque
To establish whether the torque is positively or negatively about pivot point or axis, take the xor operation of r and F. Utilizing rF, calculate the torque's magnitude. Identify the proper.
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What is 20 newton force?.
20 Newton force is the force which can cause 1 m/s² acceleration in a body of mass 20 kg.
By the second law of Newton, force is defined as the time rate of change of momentum in a body. In other words a force can accelerate a body having some mass.
F = (m₁v₁-m₂v₂)/Δt
Where F is the force, m₁ & v₁ are the initial mass and velocity of the object and m₂ & v₂ are the final mass and velocity of the object.
Or, F = mass × acceleration
The SI unit of force is kg-m/s²or Newton. We can say that a force of 20 Newton can produce an acceleration of 1 m/s² in a body of 20 kg. Or it can produce a 4 m/s² acceleration in a body of 5 kg mass.
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How 1 kilogram is equal to 9. 8 N?.
The force needed to move an object has a high N value when its mass is large in kg, 1 kg weight in this case equals 9.81 N or 1 kg=9.8N.
We know that,
F =mg
F = 1kg ×9. 8 N
F = 9.8N
The kilogrammes, or simply kg, is a unit used to measure an object's mass in the international systems of units (SI unit). Newton, or simply N, is a unit used to measure force in the international systems of units (SI unit).
The kilogram and newton have a straight proportional connection.
Since When an object has a low mass in kg, it also has a low force in N needed to move it.
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