The amplitude of the electric field in a plane electromagnetic wave is 100 v/m then the amplitude of the magnetic field is 3.34×[tex]10^{-7}[/tex].
What is an Electromagnetic wave?Electromagnetic waves, or EM waves, are produced by the oscillations of an electric field and a magnetic field. In other words, electromagnetic (EM) waves are created when magnetic and electric fields oscillate.
Electromagnetic waves are produced when an electric field and a magnetic field interact. They are referred to as "electromagnetic" waves as a result. The electric field and magnetic field of an electromagnetic wave are perpendicular to one another (at right angles). They are also parallel to the direction of the EM wave.
According to the question,
Electric Field, E₀= 100 v/m and,
B₀/E₀=1/c
The amplitude of the magnetic field will be :
B₀=E₀/c
=100/(3×[tex]10^{8}[/tex])
B₀=3.34×[tex]10^{-7}[/tex]
Hence, the amplitude of the magnetic field is 3.34×[tex]10^{-7}[/tex].
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Suppose a simple pendulum consists of a 3.5 m string and a 0.3-kg bob, and its period is 3.75 s. what would be the period of the pendulum if the mass of the bob were doubled?
The period of pendulum is still the same at 3.75 seconds.
We need to know about pendulum experiment to solve this problem. The pendulum is a simple experiment to calculate gravitational acceleration. The gravitational acceleration can be calculated by
g = 4π² . L / T²
where g is gravitational acceleration, L is the length of the string and T is the period.
From the question above, we know that:
L = 3.5 m
m1 = 0.3 kg
T1 = 3.75 s
m2 = 2m1
Find the period of pendulum
g = 4π² . L / T²
T² = 4π² . L / g
T = √(4π² . L / g)
The period of a pendulum does not depend on the mass of the object, hence the period is still the same at 3.75 seconds.
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state one precaution that needs to be taken when carrying out an electrical experiment
Answer: Maintain a work space clear of extraneous material such as books, papers, and clothes. Never change wiring with circuit plugged into power source. Never plug leads into power source unless they are connected to an established circuit. Avoid contacting circuits with wet hands or wet materials
Explanation:
The system that controls such body processes as hormone balance, temperature, and width of blood vessels is called the:_________
The system that controls such body processes as hormone balance, temperature and width of blood vessels is called the endocrine system.
In coordination with the nervous system, the endocrine system controls and maintains balance in the organ system. It does this by secreting hormones. The nervous system sends a signal to the endocrine system which secretes hormones to coordinate different processes in the body.
Hormones are chemical substances that circulate round the body and bind to a target cell, where they elicit a response. Special organs called endocrine glands secrete these hormones directly into the blood stream. For example, the pancreas secretes a hormone called insulin, and another one called glucagon. These two hormones work together to control the glucose levels in the blood.
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Hannah is driving a car up a hill. She observes that the car tends to slow down if she does not press down on the accelerator. Hannah suggests that friction between the car and the road is causing the car to slow down. Which best explains why Hannah’s suggestion is not a scientific theory?
Group of answer choices
Hannah’s suggestion is not a well-supported and widely accepted explanation
Hannah is not a well-paid scientist
Hannah’s suggestion is a claim that has been well tested.
Hannah’s suggestion is a good idea held by an individual and based on a life experience.
Answer:
C. is correct.
Explanation:
Hope this helps :)
The suggestion given by Hannah is not a well-supported and widely accepted explanation. So, option A is correct.
What is friction?Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion. Automobile engines use about 20% of their output to overcome frictional forces in moving parts.
The adhesion forces between the contact zones of the surfaces, which are always microscopically uneven, appear to be the primary cause of friction between metals. Shearing these "welded" joints and the action of the tougher surface's imperfections scrubbing against the softer surface cause friction.
According to the question, Hannah is driving the car up a hill and when she is not pressing the accelerator the car slows down. The reason behind this is that there is an ascent of height that the car has to climb with its engine power and if the accelerator is not applied to it then it will start to slow down also friction is a factor that is involved in this case.
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Two men walk away from each other in opposite directions. both travel 3.5 m each second. what is the difference between the speeds and between their velocities?
There is no difference between the speeds of two men walk away from each other in opposite directions travelling at 3.5 m each second.
There is no difference between the speed and the velocity of the two men given the information provided. The information provided gave a velocity of 3.5m/s however the speed of the journey was not supplied from the question. Also, the total time travelled, the total distance travelled was not provided from the question hence, it is impossible to calculate the speed and velocity to determine with certainty the speed of the journey. The question only provided a 3.5 m per second velocity for the journey taken by both men. It would have been possible to calculate their differences with information on total distance covered or total time taken.
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What happens when an acid and base react? What are the products of that reaction?
Answer:
When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt.
Explanation:
Questions
or each question show all your working clearly.
A diver, of mass 50 kg, climbs up to a diving
platform 1.25 m high.
a) What is his weight, in N?
b) What is his change in P.E.?
c) Where does this energy come from?
d) He walks off the platform and falls down.
What is his K.E. as he hits the water?
e) What is his speed as he hits the water?
(a) Height of diver in N is 490N pounds
(b) change is P.E is 612.5J
(c) Energy come work done against conservative force
(d) K.E. as he hits the water is 612.5J
(e) His speed as he hits the water is
4.9 m/s
It is given that
mass of diver is 50kg
height of platform is 1.25 m
(a)
As it ascends Gravitational acceleration has an effect.
So,
→ w = ma
→w = 50 x 9.8
→ w = 490N
Hence, Diver weighs 490N pounds.
(b)
P. E = mgh
P.E. = 50 x 9.8 x 1.25 = 612.5J
The Potential Energy Change is 612.5J.
(c)
Potential energy come from work done against conservative force
(d)
Before a diver hits the ground, his K. E. is equal to the potential energy that is stored in it. because as one falls, potential energy is transformed into kinetic energy.
So, K. E = 612.5J
(e)
mv2/2 = 612.5J
50 x v² = 612.5 × 2
→ 50v² = 1225
→ v² = 1225/50
→ v² = 24.5
→ v = 4.9m/s
He is moving at 4.9 m/s when he strikes the water.
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A kangaroo jumps to a vertical height of 2.8 m. How long will it be in the air before returning to Earth?
The total time spent by the kangaroo in the air before returning to the earth is kangaroo
Data obtained from the questionFrom the question given above, the following data were obatined:
Height (h) = 2.8 mAcceleration due to gravity (g) = 9.8 m/s²Total time (t) =? How to determine the time to reach a height of 2.8 mWe'll begin by obtainig the time to reach the height of 2.8 m. This is illustrated below:
h = ½gt²
2.8 = ½ × 9.8 × t²
2.8 = 4.9 × t²
Divide both side by 4.9
t² = 2.8 / 4.9
Take the square root of both side
t = √(2.8 / 4.9)
t = 0.76 s
How to determine the time for the entire trip Time to reach maximum height (t) = 0.76 sTime for the entire trip (T) =?T = 2t
T = 2 × 0.76
T = 1.52 s
Thus, the kangaroo will spend 1.52 s in the air.
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When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet.
When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet exhibits a retrograde motion
When a planet is far from another planet and observed from it, it rotates at a slower rate, making it appear that it is "retrograding" with regard to the other planet.
Early astronomers were perplexed when they observed motion in the sky because they attempted to explain it in terms of the geocentric idea.
Due to their commitment to the geocentrical paradigm, which stated the Earth was the center of the solar system, early astronomers were perplexed and unable to explain the phenomena.
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Can mechanical energy ever be transformed completely into heat or internal energy?can the reverse happen? in each case, if your answer is no, explain why not; if yes,give one or two examples.
The reverse is not possible in this case
Explanation:Heat can be produced entirely from mechanical energy.
When a moving object slides across an uneven, level surface and eventually comes to a stop, all of its mechanical energy has been converted to heat.
Additionally, if a moving object were to compress a frictionless piston filled with an insulating gas, the gas would absorb the object's kinetic energy as internal energy.
By exerting force on its surroundings at the expense of its internal energy, a gas that expands adiabatically (without heat transfer) converts internal energy into mechanical energy.
That is undoubtedly the ideal (reversible) process.
Heat cannot be transformed completely into mechanical energy. This is related to the second law of thermodynamics.
And it is because while doing work some of the heat energy has to be expelled to a heat reservoir at low temperature.
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Marcie is trying a new cookie recipe. She wants to see if the amount of baking powder she uses will make the cookies rise more. She makes three batches of cookies and changes the amount of baking powder for each batch. What are two things that must remain constant for this experiment?
The temperature of the oven and the other ingredients that are added are the two things that will remain constant for this Experiment.
What are constant in an experiment?A constant is an unchanging amount. A constant can be measured, but it cannot be changed during an experiment or you choose not to modify it.Compare this to an experimental variable, which is a component of an experiment that the experiment itself affects.We must include constants in our experiments for a number of reasons. However, they all derive from the same trait, which is consistency or replication of outcomes.Every time we conduct an experiment, we take great care to ensure that the procedure can be repeated as often as necessary.We would also get a lot of varying results if we used a lot of different variables. The goal of experimentation would be wholly defeated in this case.To learn more about Experiments visit:
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A delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. What is the distance traveled and displacement? Assume all blocks are the same length.
1) Length: 44 blocks
2) Relocation: 10.2 blocks to the north of the east
Since each segment travelled a certain amount of distance, the total distance is:
distance equals 18 + 10 + 16 blocks.
How does displacement change with distance travelled?The total distance travelled is larger than the displacement between those two places if an item changes direction while travelling.
The displacement is only the difference between the locations of the two markers and is unrelated to the route used to get there. The entire length of the path between the two markings, however, is the distance travelled.
The distance is always greater than the object's displacement and can never be 0 or negative.
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a. If 1gcm²S-¹ = x Js. Find the value of x.
1gcmS−1 =xNS
=x.kg.mS ∧−2 .s
Now, we know that
1 g=10 ∧−3
kg and 1 cm=10 ∧−2m
Therefore, it can be written as:
10 ∧−3 kg.10 ∧−2m=x.kg.m
⇒ x=10 ∧−5
A scientist shines light with energy greater than the binding energy of platinum on a thin film of it. The same scientist then repeats the experiment with a higher intensity light. According to the photoelectric effect, what should be observed?.
It could be observed that the number of electrons escaping the film is increased.
The photoelectric effect, in a sense, is the emission of electrons from a metal surface upon an incident of radiation of a suitable wavelength on it.A radiation wave is thought to be made of a number of photons each having energy ([tex]E = h\nu[/tex]) described by the Plank's constant and the frequency of that radiation.For the photoelectric effect, we could think that a single photon causes the emission of a single electron out of the surface.Higher intensity means that the radiation being consisting of a high number of waves per unit area.Therefore, for a given instance of time, the number of radiation falling on the surface or the number of single photons falling on the surface is increased meaning that the number of electrons emitted is increased.Higher intensity [tex]\Large \to[/tex] more electrons.#SPJ4
Passive heat absorption refers to multiple choice the cooling of solar panels used to generate electricity. using natural materials to gather and hold heat. using water to cool nuclear power plants.
Passive heat absorption refers to multiple choice the cooling of solar panels used to generate electricity. using natural materials to gather and hold heat. using water to cool nuclear power plants.
The process of anything becoming totally absorbed into another substance is known as absorption. Adsorption and absorption are very independent processes that must not be confounded.
Any process by which a liquid or solid material penetrates the surface of another substance is known as chemical absorption. Intestinal absorption is the process by which the byproducts of digestion are transported from the gastrointestinal tract to the blood vessels, lymphatic system, and tissue cells.
A process known as absorption can be either chemically (reactive) or physically (non-reactive). A chemical response between the compounds being absorbed and those being absorbed is known as chemical absorption or reactive absorption.
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Practice another the wheels of a car have radius 10 in. and are rotating at 700 rpm. find the speed of the car in mi/h.
The car with wheels of 10in that are rotating at 700 rpm has a speed of 6.629 mi/h
To solve this tangential velocity problem the formula and the procedure we will use is:
v = w * r
Where:
v = tangential velocityw = angular velocityr = radiusInformation about the problem:
v = ?w = 700 rpm = revolutions / minr = 10 inApplying the tangential velocity formula, we get:
v = w * r
v = 700 rpm * 10 in
v = 7000 in/ min
Converting the velocity from in/min to mi/h, we have:
7000 in/min * (1 mile/ 63360 in) * (60 min / 1h) = 6.629 mi/h
What is tangential velocity?In physics is the length of arc traveled in each unit of time in uniform circular motion. It is expressed in units of distance per time (m/s), (km/h).
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To determine the displacement, we first identify the initial and final positions. The initial position is Xi= 5.0m, and the final position is
Xf= 8.0m. Therefore, the displacement is
The displacement of the object is determined as 3.0 m.
What is displacement?
The displacement of an object is the change in the position of the object.
displacement = Δx = xf - xi
where;
xf is the final position of the object'xi is the initial position of the objectΔx = xf - xi
Δx = 8.0 m - 5.0 m
Δx = 3.0 m
Thus, the displacement of the object is determined as 3.0 m.
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Which of the following actions are minimally necessary to determine if a motion detector should be calibrated before using it to investigate the motion of an object? Note: Even if you did not use a motion detector in to carry out this experiment, consider the information in the reading when responding to this question.
The following actions are minimally necessary to determine if a motion detector should be calibrated before using it to investigate the motion of an object is option C which is both of this action are required.
What is motion detector?Motion detector is a mechanical device that have sensor and it is use to detect the movements of people or objects in a place. It is use by security organizations to detect illegal movements and the sensors send alert to the system if there is any strange thing.
Therefore, The following actions are minimally necessary to determine if a motion detector should be calibrated before using it to investigate the motion of an object is option C which is both of this action are required.
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I have a balloon full of an unknown gas. If i were to raise the temperature by the factor of 4 how will the rms velocity of the gas change?.
The rms velocity of the gas change is [tex]2V_{rms}[/tex].
The molecules are interacting with the container walls as well as one another as they move through it at varying speeds and directions. As a result, even at the same temperature, each particle's velocity and, consequently, kinetic energy, are constantly changing.
The value of the square root of the sum of the squares of the stacking velocity values divided by the number of values is the root-mean-square (RMS) velocity. The RMS velocity is the speed of a wave traveling along a certain ray path across subsurface strata with various interval velocities.
According to the formula
[tex]V_{rms}[/tex] = √3RT/M
T"=4T
Then, [tex]V'_{rms}[/tex]= √(3R×4T)/M
[tex]V'_{rms}[/tex]=2√(3RT/M)
[tex]V'_{rms}[/tex]=2V_rms
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The center of the thin disk is displaced 15 mm and then released. What is the maximum velocity attained by the center of the disk assuming no slip between the disk and the surface?
The maximum velocity is v= √10gh/7
The energy that an object has due to its location in a gravitational field is known as gravitational potential energy. When an object is close to the surface of the Earth, when the gravitational acceleration can be assumed to remain constant at roughly 9.8 m/s2, gravitational potential energy is most frequently used.
For the situation of the maximum velocity of the sphere when it hits the ground, the loss in gravitational potential energy is equal to the gain in translational kinetic energy and rotational kinetic energy.
mgh = mv² x I / 2.
mgh = 0.5 mv² + 0.5 (2/5 mR²)
The no-slip condition results in:
v=Rω
mgh = 0.5 mv + 0.2 mv
⟹v= √10gh/7
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Microwaves, such as those used for radar and to heat food in a microwave oven, have wavelengths greater than 3 mm. What is the corresponding frequency of radiation of a wavelength of 13. 4 mm?.
The frequency of electromagnetic waves is 22.32 x 10⁹ Hz or 22.32 GHz.
We need to know about electromagnetic waves to solve this problem. Electromagnetic waves can propagate without media. The speed of electromagnetic in vacuum media is equal to the speed of light. Hence, the wavelength and frequency can be determined as
c = λ . f
where c is the speed of light (3 x 10⁸ m/s), λ is wavelength and f is frequency.
From the question above, we know that
λ = 13.44 mm = 0.01344 m
By substituting the given parameter, we can calculate the frequency of microwaves
c = λ . f
f = c / λ
f = 3 x 10⁸ / 0.01344
f = 22.32 x 10⁹ Hz
f = 22.32 GHz
Hence, the frequency of radiowaves is 22.32 x 10⁹ Hz or 22.32 GHz.
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Light with a frequency of 7. 30 x 1014 hz lies in the violet region of the visible spectrum. What is the wavelength of this frequency of light? please answer in nm and round to the nearest whole number.
Light with a frequency of 7.30 x 10¹⁴ that lies in the violet region of the visible spectrum has a wavelength of 412nm.
In the question, we are given the frequency of light as 7.30 x 10¹⁴hz. The formular that connects frequency and wavelength is:
λ = v/f
Where:
v is the velocity of light, which is 3 x 10⁸m/s,λ (lambda) is the wavelength, andf represents frequency.If we put in the values of f and v into the formular:
λ = 3x10⁸ ÷ 7.30x10¹⁴
λ = 4.12x10⁻⁷m
The answer is in meters because the velocity of light is measured in meters per second. To convert it to nanometers, we will multiply the answer by 10⁹, hence:
λ = 4.12x10⁻⁷ x 10⁹
λ = 4.12x10² = 412nm
What is wavelength?The wavelength of a wave is the distance between two successive troughs or crests. When we say that the wavelength of a spectrum of light is 412nm, it means that the distance between two successive crests for that spectrum of light is 412nm.
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Help with explaining please
A box has a mass 45kg is pushed to the right with a force of 270 newtons. What will the acceleration be? ( Please help)
Answer:
6m.s‐²
Explanation:
IF there is no friction or any other force acting on the objects then use the equation Fnet=m.a
Fnet=m.a
270=45(a)
a=6
results will change if there is another force acting on the box besides the pushing force
please give brainliest
Why do students and scientists construct scale models of natural phenomena? (1 point) Oto define new units of measurement O to correct mistakes in nature O to collect data from natural events O to better observe patterns and relationships
PLS HELP ITS DUE TODAY!!!!!!
Students and scientists construct scale models of natural phenomena to better observe patterns and relationships.
What is natural phenomena?
Things that happen naturally—phenomena—occur or show up without human intervention. Gravity, tides, moons, planets, volcanic lightning, starling swarms, ant armies, sandstorms, biological processes and oscillation, among countless more events, are examples of natural phenomena.
Scientists and students use models to help them visualize their current understanding of a system in the condition that it is in right now.
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A spherically symmetric charge distribution produces the electric field e = (5000r2)r n/c, where r is in m. a. what is the electric field in n/c strength at r = 20 cm?
The electric field in n/c strength at r = 20 cm is 200rN/C.
The area surrounding a charge or charged body where other charges (of lesser magnitude than the source charge) feel an electric force is known as the electric field.
Electric field intensities are utilized practically in electrical technology as well as being significant in many branches of science. On an atomic level, we may say that the attractive force that holds atoms together and the forces between atoms that result in chemical bonding are both caused by the electric field.
[tex]E=500r^2rN/C[/tex]
electric field at r=20cm
r=0.2m
[tex]E=5000\times0.2^2N/C[/tex]
=200rN/C
diameter = 40cm
=r=20cm
thus r=0.2m
Electric flux Ф=E.A
area [tex]A = 4\pi r^2[/tex]
[tex]=4\pi (0.2)^2[/tex]
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What is the atomic number for an element whose mass number is 92, which contains 52 neutrons per atom?
The atomic number for an element whose mass number is 92, which contains 52 neutrons per atom is: 40
The formulas and procedures we will use to solve this problem are:
number of protons = mass number - number of neutronsatomic number = number of protonsInformation about the problem:
mass number = 92number of neutrons = 52atomic number =?Applying the number of protons formula we get:
number of protons = mass number - number of neutrons
number of protons = 92 - 52
number of protons = 40
Applying the atomic number formula we get:
atomic number =number of protons
atomic number = 40
What is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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A 3-kg ball is rolling at a speed of 6 m/s. what is the magnitude of the momentum of the ball?
The momentum of the ball is 18 kg.m/s.
We need to know about momentum to solve this problem. Momentum can be defined as the degree of difficulty to stop a moving object. It can be determined by
P = m . v
where P is momentum, m is mass and v is velocity.
Momentum also can be defined by kinetic energy
KE = 1/2 . m . v²
KE = P² / 2m
where KE is kinetic energy
From the question above, we know that:
m = 3 kg
v = 6 m/s
By substituting the given parameters, we can calculate the momentum
P = m . v
P = 3 . 6
P = 18 kg.m/s
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A bottle with a volume of 187 u. s. fluid gallons is filled at the rate of 1.7 g/min. (water has a density of 1000 kg/m3, and 1 u.s. fluid gallon = 231 in.3.) how long does the filling take?
To fill the volume of 187 u. s. fluid gallons at a rate of 1.7 g/min will take: 416215.8 min
To solve this problem the we have to do the conversion of units with the given information and the following formulas:
t = x/vd = m/vWhere:
x = distancet = timev = velocityv= volumed= densitym= massInformation about the problem:
x ( volume capacity) = 187 u. s. fluid gallonsv(fill rate) = 1.7 g/mind = 1000 kg/m³1 u.s. fluid gallon = 231 in³t = ?By converting the density unit from (kg/m³) to (g/in³)and then to (g/u.s. fluid gallon) we have:
d = 1000 kg/m³ * 1000 g/ 1 kg * 1 m³/61020 in³
d =16.380 g/in³ * 231 in³ /1 u.s. fluid gallon
d = 3783.78 g/u.s. fluid gallon
Applying the density formula and clearing the mass (m), we get:
m = d * v
m = 3783.78 g/u.s. fluid gallon * 187 u. s. fluid gallons
m = 707566.86 g
Applying the time formula we have that:
t = x/v
t = 707566.86 g / 1.7 g/min
t = 416215.8 min
What is unit conversion?It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.
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I will name you the brainliest if you please help me.
Which formula is correct for calculating the ideal mechanical advantage?
Please help me.
effort distance/resistance distance or length of ramp/height of ramp or dE/dr is correct for calculating the ideal mechanical advantage
Theideal mechanical advantage would not have any friction. this is due to the fact that some of the effort put into the machine is lost trying to overcome friction.
ideal mechanical advantage is denoted by the sign IMA, that ignores the drawbacks of friction.
The force amplification achieved at "ideal" MA is measured without accounting for efficiency losses. Theoretically, a straightforward method might accomplish this level of amplification.One of the simplest representations of a mechanical advantage is a lever. You may model the mechanical advantage as follows:where the mechanical advantage corresponds to the a/b ratio. This is an illustration of a "perfect" mechanical advantage since no additional power is provided to the system or efficiency losses occur. The connection between the fulcrum and the lever would, at the very least, have some friction, which would dissipate part of the force amplification and produce a mechanical advantage that was less than optimal.To know more about ideal mechanical advantage visit : https://brainly.com/question/6968974
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