Answers
The magnet does not have to be touching the tack or paper clip to lift it.
b. The distance at which the magnet can lift the tack or paper clip will vary depending on the strength of the magnet and the size of the tack or paper clip. Experimenting with different sized magnets can help determine the closest distance at which the magnet can lift the tack or paper clip.
c. The size of the magnetic field can change with the size of the magnet, generally speaking, the larger the magnet the larger the magnetic field. However, the strength of the magnet also plays a role in determining the size of the magnetic field.
What is the magnet about?A magnetic field is a force field that surrounds a magnet or a moving electric charge. It is characterized by its direction and strength, and it exerts a force on other magnets or moving charges within the field.
Therefore, It is important to note that this is a simple demonstration and in reality the magnetic field is more complex. The magnetic field can be visualized as lines of force that extend out from the magnet and can be mapped to determine the strength and direction of the magnetic field.
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Related Questions
Name four factor that will influence the resistance of a conductor
Answers
Answer:
v, i, T, r
Explanation:
v, i, T, r
Your new weed-cutter requires, as fuel, a gas-to-oil mixture of 20-to-1 (20 parts of gas mixed with one part of oil). You have 1/2 of a gallon of gas. How much oil, in gallons, should you add to make it all into fuel for the weed-cutter?
Answers
This ratio specifies how much oil should be added to how much new, standard unleaded gasoline (having no more than 10% ethanol). There is a 40:1 ratio for all Remington 2-cycle products.
How much oil should I put in a gallon of gas?This ratio specifies how much oil should be added to how much new, standard unleaded gasoline (having no more than 10% ethanol). There is a 40:1 ratio for all Remington 2-cycle products.Accordingly, for every gallon of gasoline you need add 3.2 oz of oil.Every two-cycle gas trimmer under the Weed Eater brand uses a 40:1 gas to oil ratio.This is equivalent to 3.2 ounces of oil to a gallon of standard fuel.With no more than 10% alcohol, the gas must be 87 octane.Once all of this is considered, especially the possibility of a lengthy oil change, many automobile owners find it wise to add oil whenever the dipstick indicates a low level.Don't wait until it has completely descended.To lean more about gallon of gas refer
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1. Rectifiers:
A crystal diode having internal resistance rf = 200 is used for half-wave
rectification. If the applied voltage v = 50 sin o t and load resistance
RL=800 22, find:
(A) Im, Idc, Irms
(B) A.C. power input and D.C. power output
(C) d.c. output voltage.
(D) Efficiency of rectification.
Answers
A crystal diode having internal resistance rf = 200 is used for half-wave
rectification. If the applied voltage v = 50 sin o t and load resistance
RL=800 22- Efficiency of rectification. So, option (d) is correct.
What is voltage?
An electrical circuit's power source exerts pressure known as voltage on charged electrons (current), causing them to flow through a conducting loop and perform tasks like lighting a lamp. Voltage is measured in volts and is simply equal to pressure (V).
What is rectification?
Using one or more P-N junction diodes, a rectifier is a piece of electronic equipment that changes alternating electricity into direct current. As a one-way valve that only permits current to flow in one direction, a diode functions as a device. Corrective action is the name for this process.
Therefore, crystal diode having internal resistance rf = 200 is used for half-wave rectification. If the applied voltage v = 50 sin o t and load resistance
RL=800 22- Efficiency of rectification. So, option (d) is correct.
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Is the declining acreage of land used for farming in the United States a major problem?
a. No, food is essential for life and therefore there is no higher valued use for land than providing foodstuff, eventually government regulators will step in an reverse the
current trend.
b. Yes, unless public pressure leads to a reversal of this trend, America can expect food shortages in the future.
c. No, it is primarily a reflection of the increased productivity in agriculture and shift of the land to higher valued uses.
Od. Yes, unless government regulation slows the commercial development of land, market forces will lead to the virtual depletion of land for agricultural use.
Answers
Answer:
C. No, it is primarily a reflection of the increased productivity in agriculture and shift of the land to higher valued uses.
Explanation:
Declining acreage of land used for farming in the United States is not necessarily a major problem. The decline in land used for farming can be a reflection of increased productivity in agriculture, which allows farmers to produce more food on less land. Additionally, the shift of land to higher valued uses such as commercial development, housing, and recreation can also contribute to the decline in land used for farming. While it's important to ensure that there is enough land for food production, it's also important to consider the other economic and social benefits of different uses for land.
Consider the physical quantities m, r, v and a with dimensions [m] = M, [r] = L, [v] = LT-1. Assuming that each of the following equations is dimensionally consistent, find the magnitude dimension of the left-hand side of the equations.
(a) K = 0.5m.v²
(b) L = m.v.r.
Answers
The equation that can be shown to be dimensionally correct is K = 0.5m.v².
What is dimensions?
When we talk about the dimensions then our minds would have to go the relationship that does exist between the quantities. On the ways that dimensions is very important is that we can use the dimensions so as to show that an equation is correct.
We know that here we have the dimensions as LT-1. The left hand side of the and the correct equation would have to be K = 0.5m.v² as we can see in the question here.
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What is the cost of running a 3.1 kilowatt (kW) air conditioner for 8
hours while you are at school (at a cost of 16 cents per kilowatt hour)?
221 cents
397 cents
812 cents
453 cents
Please help giving BRIANLESS
Answers
397 cents is the cost of running a 3.1 kilowatt (kW) air conditioner for 8
hours.
How do we calculate cost?To calculate your overall cost, add your fixed and variable costs. The technique for determining a business's total costs is rather straightforward, much like with personal budgets: Total Cost = Fixed Costs + Variable Costs.You add your fixed and variable costs and divide the total by the quantity of units you generate to arrive at your cost per unit. Cost per Unit = (Total Fixed Costs + Total Variable Costs) / Total Units Produced is the formula for calculating cost per unit.Fixed costs, variable costs, direct costs, and indirect costs are the four basic categories into which costs are divided.Making judgements on price, manufacturing volume, and sales while also determining the expenses of the goods and services the group sells.Given data :
cost per kilowatt hour = 16 cents
Total hours = 8 hours
Total power consumed = 3.1 KW
Cost for 3.1 KW = 16 x 3.1 = 49.6
Total cost for power consumed for 8 hour = 49.6 x 8
= 396.8 to 397 cents
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Is this energy resource used in a centralized way (like a large central power plant that serves and area) or a distributed way (at or near the homes and buildings it provides power for)?
Answers
A microgrid is a self-sufficient energy system that provides power to a specific geographic area, such as a neighborhood, business district, hospital complex, or college campus.
What is Microid?One or more types of distributed energy (solar panels, wind turbines, combined heat and power plants, and generators) are used in microgrids to generate power.
In addition, a lot of more recent microgrids have energy storage, usually in the form of batteries. Additionally, several now have stations for charging electric cars.
This sets microgrids apart from the massive, centrally located grids that have supplied the majority of our electricity for the past century.
Therefore, A microgrid is a self-sufficient energy system that provides power to a specific geographic area, such as a neighborhood, business district, hospital complex, or college campus.
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The combined mass of Maggie and her snowmobile is 326 kg. In an attempt to chase her brother Jason, she accelerates from 6.6 m/s to 25.9 m/s in a time of 18.0 seconds
Answers
The acceleration of the combined mass of Maggie and her snowmobile will be 1.072 meters per second square.
What is the equation of motion?If the acceleration is constant throughout the motion. Then the equation of the motion is given as,
v = u + at
Where 'v' is the final velocity, 'u' is the initial velocity, 't' is the time, and 'a' is the acceleration.
In an attempt to chase her brother Jason, she accelerates from 6.6 m/s to 25.9 m/s in a time of 18.0 seconds.
Then the acceleration is calculated as,
25.9 = 6.6 + a(18)
18a = 19.6
a = 1.072 meters per second square
The acceleration of the combined mass of Maggie and her snowmobile will be 1.072 meters per second square.
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Two particles with charges Q=16 microC and -Q=-16 microC are fixed at the vertices of an equilateral triangle with sides of length a = 8 micrometers. The work required to move a particle with a charge q=19 microC from the other vertex to the centre of the line joining the fixed charges is ...J
Answers
The work required to move the particle with a charge of q = 19 microC from the other vertex to the center of the line joining the fixed charges is approximately -2.03 * 10^-14 J.
What is the work required?The work required to move a charge from one point to another in an electric field is given by the equation W = qV, where q is the charge and V is the potential difference.
In this case, the potential at the center of the line joining the two fixed charges can be calculated using Coulomb's law. The potential difference between the center and the third vertex can then be calculated, giving us the work required to move the particle with a charge q = 19 microC.
W = qV = 19 * 10^-6 C * V
Where V is the potential difference, which can be calculated as follows:
V = (1/(4 * pi * epsilon_0)) * ((Q / a) - (q / a))
Where epsilon_0 is the vacuum permittivity and a is the length of the sides of the equilateral triangle.
Substituting the values, we get:
W = 19 * 10^-6 C * (1 / (4 * pi * 8.854 * 10^-12 C^2/Nm^2)) * ((16 * 10^-6 C / 8 * 10^-6 m) - (19 * 10^-6 C / 8 * 10^-6 m))
W = 19 * 10^-6 C * (1 / (4 * pi * 8.854 * 10^-12 C^2/Nm^2)) * (-3 * 10^-6 C / 8 * 10^-6 m)
W = 19 * 10^-6 C * (1 / (4 * pi * 8.854 * 10^-12 C^2/Nm^2)) * (-3 * 10^-6 / 8) J
W = -2.03 * 10^-14 J
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A 950 kg police boat slows down uniformly from 65 km/h [E] to 15 km/h [E] as it enters a harbour. If the boat slows down over a 45 m distance,
what is the net force on the boat?
Answers
The net force on the boat is 16,359 N.
What is the acceleration of the boat?
The acceleration of the boat is calculated from the change velocity of the boat of the boat to the change in time of motion of the boat.
v² = u² - 2as
where;
v is the final velocity of the boat = 65 km/h = 18.1 m/su is the initial velocity of the boat = 15 km/h = 4.2 m/sa is the acceleration = ?s is the distance travelled = 9 ma = ( u² - v² ) / 2s
a = ( 18.1² - 4.2² ) / ( 2 x 9 )
a = 17.22 m/s²
The net force on the boat is calculated as follows;
F = ma
F = 950 kg x 17.22 m/s²
F = 16,359 N
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A dogs owner walks 20.0 meters due west and then walks 45 degrees south of west a distance of 150 meters. Where is he with respect to where he started?
Answers
The displacement of the dog from its starting position is determined as 136.6 m.
What is the displacement of the dog?
The displacement of the dog is calculated by applying the following formula as shown below.
d² = a² + b² - 2 ( a x b ) x cos (Ф)
where;
a is the initial positionb is the final positionФ is the angel or direction of motionThe resultant displacement is calculated as follows;
d² = 20² + 150² - 2 ( 20 x 150 ) x cos (45 )
d² = 18,657.36
d = √ ( 18,657.36 )
d = 136.6 m
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Which element has 3 energy levels and 8 valence electrons
Answers
Answer:
argon
Explanation:
argon has 18 protons and 18 electrons there are 2
electrons on the first energy level,8 electrons on the second enery level and 8 on the third
A 0.060 kg tennis ball moving with the speed of 2.50 m/s, collides head-on with a 0.090 kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly inelastic collision, what are the speed and direction of each ball after the collision?
a
1.50 m/s same direction of the tennis ball's initial motion
b
1.69 m/s same direction of the tennis ball's initial motion
c
2.25 m/s opposite direction of the tennis ball's initial motion
d
1.85 m/s opposite direction of the tennis ball's initial motion
Answers
The speed of each ball after the collision is 1.69 m/s and direction is same of the tennis ball's initial motion.
What is principle of momentum conservation?According to the principle of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
According to principle of momentum conservation:
the velocity of the two ball mass after the perfectly inelastic collision is
= (0.060 kg × 2.50 m/s + 0.090 kg × 1.15 m/s) ÷ ( 0.060 kg + 0.090 kg)
= 1.69 m/s
Hence, the speed of each ball is 1.69 m/s.
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Please help meee!!!!!
Answers
Except when acted upon by an imbalanced force, an object at rest remains at rest and an object in motion continues to move in a straight path at a constant pace.
What is Newton's law of motion?According to the first law, a force must be applied to an object before it may affect its motion. According to the second law, an object experiences a force equal to its mass times its acceleration. According to the third law, when two things interact, they exert forces on one another that are both equal in strength and directed in the opposite direction.
According to the first law, an object will continue moving in the same direction unless another force acts on it. According to the second law, an object's force is determined by multiplying its mass by its acceleration. There is an equal and opposite reaction to every action, according to the third law.
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2 What distance will a sprinter travel in 4.0 s if his or her
acceleration is 2.5 m/s²? Assume the sprinter starts
from rest.
A 13 m
B 20 m
C 80 m
D 90 m
Answers
The distance travelled by sprinter in 4 sec is 20 m
It is given that
acceleration of sprinter = 2.5 m/s²
time taken by sprinter = 4.0 s
initial speed of sprinter = 0 m/s
We have to find distance travelled by sprinter
We will use the following equation of motion
S = ut + 1/2at^2
S = 1/2at^2
S = 1/2 x 2.5 x (4)^2
S = 1/2 x 2.5 x 16
S = 20 m
Hence, distance travelled by sprinter in 4 sec is 20 m
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two ropes tied to a tree branch hold up a child swing as shown in figure 7 . the tension in each rope is 2.28N.what is the combined force (magnitude and direction) of the two ropes one the swing?
Answers
The magnitude of the combined forces is 4.56 N in a direction of 13⁰.
What is the combined tension of the two ropes?
The combined force of the two ropes one the swing is calculated by resolving the tensions into x and y components.
The sum of the x component of the forces is calculated as follows;
x = 2.28 cos ( 13 ) + 2.28 cos ( 13 )
x = 4.44 N
The sum of the y component of the forces is calculated as follows;
y = 2.28 sin ( 13 ) + 2.28 sin ( 13 )
y = 1.03 N
The magnitude of the resultant force is calculated as;
F = √ ( 4.44² + 1.03² )
F = 4.56 N
The direction of the forces is calculated as follows;
θ = arc tan ( 1.03 / 4.44 )
θ = 13⁰
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Solve for s.
S- 7.39
-2
S=
= -0.69
Answers
Answer: 6.01
Explanation:
s-7.39 = -1.38
s = -1.38 + 7.39 = 6.01
Answer:
The answer is 6.01
Explanation:
[tex] \frac{s - 7.39}{( - 2)} = ( - 0.69) \\ [/tex]
Multiply both sides by (2) we get,
[tex]s - 7.39 = ( 2)( - 0.69)[/tex]
[tex]s - 7.39 = - 1.38[/tex]
Add both sides 7.38 we get,
[tex]s - 7.39 + 7.39 = - 1.38 + 7.39[/tex]
[tex]s = 6.01[/tex]
Thus, The value of s is 6.01
A certain satellite orbiting the Earth has an orbital radius of 7.6 E^7 m. Calculate the orbital speed of the satellite. (^M earth = 6.0 E^24 kg)
Answers
With the use of formula, the orbital speed of the satellite is 2294.7 m/s
What is Orbital Speed ?Orbital speed can as well be regarded as orbital velocity. The necessary centripetal force is provided by the earth's gravitational pull.
Given that a certain satellite orbiting the Earth has an orbital radius of 7.6 E^7 m. Calculate the orbital speed of the satellite.
M = 6.0 E^24 kgg = 9.8 m/s^2r = 7.6 E7 mIf the centripetal force is provided by the earth's gravitational force, then,
(mv²)/r = GMm/r²
v²/r = GM/r²
v² = GM/r
v = √GM/r
Where v = orbital speed
Substitute all the parameters
v = √( 6.67 × 10^-11 × 6.0 × 10^24)/(7.6 × 10^7)
v = √5265789.5
v = 2294.7 m/s
Therefore, the orbital speed of a satellite orbiting the earth is 2294.7 m/s
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a bus traveling with a speed of 54 km/h has a kinetic energy of 2x10^6 j. what is the mass of the bus
a. 1.78 x 10^5 kg
b. 2.88 x 10^7 kg
c. 1.78 x 10^4 kg
d. 2.88 x 10^5 kg
Answers
The mass of the bus is 1.78 × 10⁵ kg. Hence, option (a) is correct.
What is kinetic energy?Kinetic energy is a type of energy that a moving object or particle possesses. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
Mathematically,
Kinetic energy = 1/2 × mass × speed²
2 × 10⁶ Joule = 1/2 × mass × (54 km/h)²
2 × 10⁶ Joule = 1/2 × mass × (54 × 5/18 m/s)²
Mass = 2 × 2 × 10⁶ ÷ (54 × 5/18 m/s)² kg
= 17777.78 kg.
= 1.78 × 10⁵ kg
Hence, mass of the bus is 1.78 × 10⁵ kg.
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4. Two equal charges of 5.0 C push each other apart with a force of 4.3 N. How far apart are the
two charges? SHOW ALL WORK
Answers
The two equally charged particles are about 651 m apart from each other.
What is Coulomb's Law ?The Coulomb's inverse-square law, sometimes known as Coulomb's law, is an experimental physical principle that measures the force exerted between two electrically charged particles that are stationary. Common names for the electric force between two charged objects at rest include electrostatic force and Coulomb force.
The inverse square dependency of electric force is represented by Coulomb's law. Additionally, the law is accurately used in the proofs of Magnus' law for general instances. Coulomb's law's vector form is crucial since it describes the direction of the electric fields created by charges.
Briefing:
Coulomb's law, force of attraction/repulsion
F = kQ₁Q₂/r²
Q₁ and Q₂ are the charges in coulombs
r is separation in meters
k = 8.99e9 Nm²/C²
Here, Q1 = Q2 = Q
So,
F = kQ² / r²
r = Q/√(F/k)
⇒ r = 5/√(4.3/8.99e9)
⇒ r = 650.79 m
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An engine develops a power of 750watts while moving a car at constant velocity 3m/s therefore the work exerted on the car by the engine is. And please I need the solution
Answers
The work exerted on the car by the engine is 250 Joules.
What is Work?
Work is a physical quantity that is defined as the force applied to an object over a distance. It is a scalar quantity and is measured in units of joules (J) in the International System of Units (SI). The formula for work is W = F x d, where F is the force applied and d is the distance over which the force is applied.
The work exerted on the car by the engine can be calculated using the formula:
Work = Power x Time
Since the car is moving at a constant velocity, we can calculate the time it takes for the engine to exert the given power by using the formula:
Velocity = Work / Time
So, we can find time by using:
Time = Work / Velocity
Substituting the given values, we have:
Time = (750 watts) / (3m/s)
Therefore, the work exerted on the car by the engine is:
Work = Power x Time
Work = 750 watts x (750 watts / 3m/s)
Work = 750 * 250 Joules
So, the work exerted on the car by the engine is 250 Joules.
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A 15 g bullet is fired horizontally into a 3.000 kg block of wood suspended by a long cord. The bullet comes to a rest in the block. Determine the velocity of the bullet if the impact causes the block to swing 10 cm above its initial level
Answers
The velocity of the bullet if the impact causes the block to swing 10cm above its initial level is 281m/s.
What is law of conservation of momentum?The law of conservation of momentum determines that the momentum of a system remains conserved after a collision. The initial momentum of a system of two bodies is equal to the final momentum of the system.
After collision, initial K.E. (Kinetic energy) of combined mass = 3 × 10 × 0.1 = 3J
1/2 × 3 × v² = 3
v = √2m/s
Conservation of momentum,
15 × v = 3000 × √2
v = 281m/s
Therefore, the velocity of the bullet is 281m/s.
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help me................ its two parts
Answers
Your answer would be 21!
1. Which distance is the greatest?
O 7000 meters
O 99.99 meters
O 4.5 x 10³ meters
O 9.0 x 10² meters
Answers
Answer:
7000 meters
Explanation:
obviously 99.99 is less than 7000
10 cubed is 10 × 10 × 10, 1000, × 4.5 is 4500, which is less than 7000
10 squared is 100, which × 9 is only 900, which is also less than 7000
have a good day
Which of the following relationships concerning two masses and the gravity between
them is true?
O the smaller the distance, the smaller the gravitational force between them
O the larger the masses, the larger the gravitational force between them
O the larger the distance, the larger the gravitational force between them
O the smaller the masses, the larger the gravitational force between them
H
DE
Answers
The following relationships concerning two masses and the gravity between;The larger the masses, the larger the gravitational force between them.
What is the gravity ?
Gravity is the force of attraction between two objects that is caused by their mass. It is a fundamental force of nature that is responsible for the formation, shape and trajectory of the universe. It is responsible for keeping the planets and stars in their orbits and for keeping us on the ground. Gravity is a very weak force and its effects are only noticeable when objects have a very large mass. It is the weakest of the four fundamental forces, but is the dominant force in the universe on the large scale. Gravity acts on all objects in the universe, regardless of their size, shape or composition. Gravity is a universal force that cannot be switched off or blocked.
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Is Fielding games helps develop locomotor skills?
Answers
Explanation:
yes, yes it helps in improving locomotive skills
—l l—
What does the ladder diagram symbol shown here represent?
A. Contact, normally open
B. Fuse
C. Overload contact
O D. Flow switch, normally open
Answers
Software for programmable logic controllers is created using the graphical programming language ladder diagram (PLCs).
What do you mean by ladder diagram?These unique Symbols are frequently utilised in industrial control logic systems. Ladder diagrams get their name from the way they seem like ladders, with two vertical lines for power and as many horizontal lines for control units.
The graphical programming language Ladder Diagram is used to create software for programmable logic controllers (PLCs). It's one of the languages allowed for usage with PLCs according to the IEC 61131 standard. Circuit diagrams that simulate relay logic devices are known as programmes in ladder diagram notation.
Usually Open (NO) If Closed, contact or examine (XIC)Typically Closed (NC) If Open, Contact or Inspect (XIO)Result Energize (OTE)OTL (Output Latch) and OTL (Output Unlatch) (OTU)To learn more about ladder diagram refer to:
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What was discovered between the number of wire coils on an electromagnet and magnetic fields?
Answers
The electromagnetic field increases by increasing the number of wire coils. Hence, the electromagnetic field and the number of wire coils are directly proportional to each other.
What is an electromagnetic field?Invisible magnetic and electric fields of force combine to form electromagnetic fields. They are produced by both human activities, mostly via the usage of electricity, as well as by natural processes like the Earth's magnetic field.
When charged particles, like electrons, are accelerated, an electromagnetic field, also known as an EM field, is created. Electric fields surround all electrically charged particles. Magnetic fields are created when charged particles are in motion.
the electromagnetic field and the number of wire coils are directly proportional to each other.
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A string is stretched between two clamps held 4.04 m apart. The string is made to oscillate at its third harmonic frequency.
Calculate the distance in m between two adjacent nodes
Answers
The distance in m between two adjacent nodes is 1.01 m.
What is oscillation?
Oscillation is the repeating or periodic change of a quantity around a central value or between two or more states, often in time. Alternating current and a swinging pendulum are two common examples of oscillation.
The distance between two clamps = 4.04 m.
The string is made to oscillate at its third harmonic frequency.
At its third harmonic frequency, the distance between two clamps is equal to 3/2 the of its wavelength.
Hence, the distance in m between two adjacent nodes is = 44.04/4 m = 1.01 m.
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How do you benefit from the life processes performed by one of the organelles in plant cell ?
Answers
The photosynthetic pigment, chlorophyll is present in the chloroplast of the cell. It helps to absorb the solar energy. It converts the light energy into chemical energy and helps in the process of photosynthesis.
What is meant by photosynthetic?
The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.Green plants and certain other organisms convert light energy into chemical energy through a process called photosynthesis.Light energy is gathered and utilised during photosynthesis in green plants to change water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.Chloroplasts, which are found in the mesophyll of the leaves, are where photosynthesis occurs.The chlorophyll in the thylakoids, which are located inside the chloroplast, absorbs the various colors of light to produce energy.Photosynthesis is the method through which land plants use carbon dioxide and sunshine to create their own nourishment.To learn more about photosynthetic refer to
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