1 Nm (Newton-meter) is a unit of torque, which is a measure of the twisting force applied to an object, such as a shaft or a nut.
It is defined as the amount of force required to rotate an object around an axis by one radian (about 57.3 degrees). In other words, one Nm of torque is equal to the force of one Newton (N) acting at a distance of one meter (m) from the axis of rotation. It is a common unit of torque used in the field of mechanics and engineering, particularly in the design and operation of machines and vehicles. Torque is also related to the angular velocity of an object, and the rotational energy, which is calculated by multiplying the torque by the angle through which the object rotates. In a mechanical system, torque is often controlled by adjusting the position of the mechanical load or by applying a force to a lever to generate torque.
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What is angular momentum write its SI unit and dimension?.
It is the property of a rotating body determined by the product of the rotating object's moment of inertia and angular velocity. It is a vector quantity, which means that the direction is taken into account in addition to the magnitude. It is expressed in SI base units: Kg.m2.s-1
What is angular momentum?Angular momentum is the rotational equivalent of linear momentum in physics. It is an important physical quantity because it is a conserved quantity—in a closed system, the total angular momentum remains constant. Both the direction and magnitude of angular momentum are conserved. The property of any rotating object given by moment of inertia times angular velocity is defined as angular momentum. It is the property of a rotating body determined by the product of the rotating object's moment of inertia and angular velocity. An object's angular momentum is the product of its rotational inertia and angular velocity. The angular velocity of an object is the rate at which it turns.
Here,
It is a rotating body property that is determined by the product of the rotating object's moment of inertia and angular velocity. It is a vector quantity, which means that the direction, in addition to the magnitude, is considered. It is written in SI base units: Kg.m2.s-1
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What is law of inertia short answer?.
The law of inertia is about the tendency of any object to remains in state of motion until and unless an external force is applied to it.
The law of inertia states that any object remains in its state of motion, (either in rest or in motion) until and unless an external unbalanced force is applied to it. For example if a car is travelling at a constant speed then it will continue to remain in this state for ever. But practically it comes to at rest state after covering some distance. This is due to the opposite force of friction working between the tires of the car and the road surface.
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A box is pushed by 20 N force to the right and displace for 0.1 m.
What is the work done?
Answer: 2 J
Explanation: Work is defined as the energy exerted by an object when a force acts on it. The formula to find the work is
W = F .d
where, F = force applied
d = displacement
In the given question,
F = 20 N
d = 0.1 m
Hence, Work done, W = F.d
= 20 x 0.1
= 2 Nm
= 2 J
What is the SI unit of mass Mcq?.
The SI unit of mass is kg.
The International System of Units is the worldwide standard for expressing magnitudes or quantities of important natural phenomena. This system of units, also called the metric system, is commonly abbreviated to SI. It derives from its original French name Système international d'unités.
Mass is a quantitative measure of inertia in physics, a fundamental property of all matter. In effect, it is the resistance that an object offers to changes in velocity or position when a force is applied. The greater the mass of an object, the smaller the change caused by an applied force.
Mass is one of the fundamental properties of matter. The mass of an object is a measure of the amount of matter in it. The SI unit of mass is the kilogram (kg). The mass of an object is always constant. Weight is a measure of the weight acting on the body.
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A proposed new roller coaster at Magic Mountain has the dubious attraction of hurtling a car at a brick wall at the end of the ride, but stopping the car with springs hidden out of sight beneath the track. The car has a mass of 1,836 kg, and is hauled up to a total height of 88.6 meters. Assume no friction, as we want to over-engineer this. If the springs have a spring constant of 100,000 N/m, how much distance do they need to bring it to stop? The answer will have 3 sig figs.
The distance the springs need to bring the car to a stop can be calculated using the equation for the potential energy of an object at a height, which is:
PE = mgh
where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s^2), and h is the height.
In this case, the car has a mass of 1,836 kg and is at a height of 88.6 meters. So the potential energy of the car at the top of the roller coaster is:
PE = 1,836 kg * 9.8 m/s^2 * 88.6 m = 1.5*10^5 J
Next, we need to find the work done by the spring. Work can be calculated using the equation
W = 1/2 * kx^2
where k is the spring constant (100,000 N/m) and x is the compression distance of the spring.
Since the work done by the spring is equal to the potential energy of the car, we can set the two equations equal to each other and solve for x (the compression distance of the spring):
1/2 * kx^2 = 1.510^5 J
x = sqrt(2 * 1.510^5 J / 100,000 N/m)
x = sqrt(30000/100000)
x = 0.173 m
Therefore, the spring needs a distance of 0.173 m to bring the car to a stop.
As part of the volcanic eruption of Mount St. Helens in 1980, there was a large horizontal blast and accompanying landslide that had a horizontal force of about 3.4 x 1021 N that lasted for about 2.5 minutes. Calculate the angular impulse this generated if Earth's radius is 6371 km. Explain why this did not have a measurable effect on Earth's angular momentum (L = 5.9 x 1033 kg.m²/s).
88 kilometers northeast of Portland, amid the Cascade Mountains, is the stratovolcano Mount St. Helens. Since the volcano only developed about 40,000 years ago, it is a rather recent formation. It is the Cascade Range's most active, though.
What is Mount st. helens?The Cascade Mountain Range is a part of the Pacific Ocean's massive Ring of Fire, which frequently experiences powerful earthquakes and volcanic eruptions.
Through the state of Washington, the mountain range runs from British Columbia (Canada) to California.
The name of the summit was given by George Vancouver, a British navigator for the Royal Navy who discovered North America's Pacific Coast, according to the United States Geology Survey (USGS), in honor of Alleyne FitzHerbert, a British diplomat and a friend of his.
Therefore, 88 kilometers northeast of Portland, amid the Cascade Mountains, is the stratovolcano Mount St. Helens. Since the volcano only developed about 40,000 years ago, it is a rather recent formation. It is the Cascade Range's most active, though.
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Ingrid live in a cold country that ometime get lot of now. When that happen , people can enjoy the port of kiing. Ingrid goe outide to ee if the now i fit for kiing. She ink into the now , but when he put her ki in,he can move over the now without kiing. Why?
She puts her skis in with less pressure because her skis have a larger surface area than her shoes do. Thus, Ingrid doesn't need to ski to travel across the snow.
The pressure on the snow is reduced by the size of the skis. The pressure on the snow is lessened by the larger surface area of skis. This prevents the skis from burying themselves too deeply in the snow.
Pressure is defined as the force perpendicularly applied to an object's surface divided by the area across which it is distributed. Gauge pressure is the pressure in relation to the air pressure outside. To express pressure, various units are employed.
Ingrid can move over the snow without skiing because there is less pressure when she puts her skis on compared to her shoes.
The question is incomplete. The complete question is 'Ingrid lives in a cold country that sometimes gets lots of snow. When that happens , people can enjoy the sport of skiing. Ingrid goes outside to see if the snow is fit for skiing. She sinks into the snow , but when she puts her skis in, she can move over the snow without skiing. Why?'
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Is gravitational field strength 9. 8 or 10?.
The gravitational field strength of the Earth is 9.8 N/kg. Accordingly, an item will experience 9.8 N of force for every kg of mass. The weight of an object is smaller if the gravitational field is weaker.
Newtons per kilogram (N/kg) are used to measure the gravitational field strength (g). At or near the surface, the gravitational field strength of the Earth is 10 N/kg. This implies that an item will experience 10 N of force for every kilogram of mass.
Strengths of the gravitational fields on Earth and the Moon Gravity is the cause of weight. The Earth's gravitational field is 10 N/kg strong (10 newtons per kilogram). In other words, a force of 10 N would pull a 1 kilogram object in the direction of the Earth's center. Such pressures are perceived by us as weight.
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How do you solve momentum step by step?.
The quantity of motion that is quantified as the product of mass and velocity is known as momentum and is related to the mass of the moving body. P=mv is the expression for the momentum.
Is momentum the same as speed?Momentum is a measure of how much an object is moving, whereas velocity is a measure of how fast an object is moving in a certain direction. Velocity is one of the components of momentum, which is defined as the item's mass multiplied by the speed of the object.
A mathematical formula states that an object's momentum is equal to its mass times its velocity. Mass times velocity equals momentum.
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The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is ? .
The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is 12.7 A.
To calculate the full-load current of a 25 horsepower, 480-volt, 3-phase, squirrel-cage induction motor, you can use the formula:
Full-load current (I) = (Horsepower * 746) / (Voltage * 1.73 * Power factor)
where 1.73 is the square root of 3, which accounts for the 3-phase power and Power Factor is assumed to be 0.8
Plugging in the given values, we get:
I = (25 * 746) / (480 * 1.73 * 0.8)
I = 25746/(4801.73*0.8)
I = 25746/(4803.07)
I = 25*746/1478.4
I = 25*0.508
I = 12.7 A
Therefore, the full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is 12.7 A.
It's worth noting that this is just an approximation and the current can vary depending on the motor design, the load and the power factor.
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An X-ray tube used for cancer therapy oper-
ates at 38 MV with a beam current of 90 mA
striking a metal target.
Calculate the power of this beam.
Answer in units of W.
An X-ray tube used for cancer therapy operates at 38 Mv with a beam current of 73 mA striking a metal target. Calculate the power of this beam.
What is metal made of?What Are Metals Made up of? Metals are made up of atomic materials such as electrons, neutrons, and protons. Atoms of different elements can be distinguished from one another by the number of protons they contain. Metals comprise about 25% of the earth's crust.
What is called non metal?Non-metals are natural materials that do not produce heat or electricity and that are structurally brittle (can not be easily rolling, moulding, extruding or pressing). Hydrogen, carbon, nitrogen, oxygen, phosphorus, arsenic and selenium are the non-metallic elements in the periodic table.
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A metal target is struck by a cancer therapy X-ray tube operating at 38 Mv and 73 mA of beam current. Determine the beam's power.
How is metal created?What Elements Are Found in Metals? Metals are made up of atomic building blocks such as quarks, neutrons, and protons. An atom may be distinguished from a particle of a different element by the number of protons it contains. Metals make up around 25% of something like the upper mantle.
What do you mean by non-metal?Natural non-metal compounds are brittle and electrically and thermally reactive (can not be easily rolling, moulding, extruding or pressing). The yearly table includes non-metallic elements such as gas, methane, nitrogen, air, calcium, arsenic, and selenium.
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Collisions , please help.
The energy of the ball is transformed into heat during the contact. As there is no more energy imparted to the ball, it returns with less kinetic energy and is unable to rise as high.
What happens to the kinetic energy of the ball after its collision?There are a variety of sizes, masses, and materials used to make balls for sports. Many of them bob. The bounce can be interpreted as a collision, whether it occurs when a basketball bounces off the ground, a tennis ball bounces off a racket, or pool balls collide. Let's look at physics to see whether it can explain what happens.The ball first picks up speed or kinetic energy—the energy of motion—when it bounces before falling. When it gets to Earth, it slams against a large object that is, from your vantage point, at rest, and the two of them collide. The ball comes to a stop, briefly deforms, and then rebounds. Because it is crushed and then expands once again, the air inside the ball behaves like a spring. The ball's energy is partially transformed into heat during the contact.This causes the ball to launch up with less energy than it did when it first hit Earth. The impact has little effect on our planet's motion because it is so large.To Learn more About kinetic energy refer To:
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What is the formula of momentum Class 11?.
Momentum is defined as the product of mass and velocity units. We can use the simple formula P=mv to calculate momentum, where P is the momentum.
What is momentum?It is measured by "mass velocity," because momentum depends on velocity, and it also depends on the direction of the body's motion. Momentum is a vector quantity because velocity is a vector and mass is a scalar quantity. Momentum equals mass multiplied by velocity. Momentum is defined as "mass moving." Because all objects have mass, if an object moves, it has momentum - its mass is in motion. Momentum is the amount of motion of a moving body, calculated as the product of its mass and velocity. Its formula is mass velocity.
Here,
The product of mass and velocity units is defined as momentum. To calculate momentum, we can use the simple formula P=mv, where P is the momentum.
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Who is the father of physics in Pakistan?.
The father of physics in Pakistan is Professor Dr. Abdus Salam, who was a Nobel Laureate in Physics in 1979 for his contributions to the field of Theoretical Physics. He was also the first Pakistani to receive a Nobel Prize in any field.
Born in 1926 in Jhang, Punjab, Pakistan, Dr. Salam earned his B.Sc. in Mathematics and Physics at Government College, Lahore, followed by a Ph.D. in Mathematics at Cambridge University in 1951. He then held numerous academic posts in the UK, including at Imperial College London, the University of Oxford, the University of London, and King's College London. In 1957, Dr. Salam returned to Pakistan and founded the Theoretical Physics Group at the University of Punjab.
In addition to his academic career, Dr. Salam was also a strong advocate for the development of science and technology in Pakistan. He was instrumental in establishing the Pakistani Academy of Science, the National Centre for Physics, and the International Centre for Theoretical Physics in Trieste, Italy.
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What source of law is provided by the Tenth Amendment to the Constitution?.
The Tenth Amendment to the Constitution states that "The powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states or to the people." This amendment is a source of law that limits the powers of the federal government and reserves certain powers to the states or the people. It is a principle of federalism, which divides the power between the federal government and the state governments. The powers that are not delegated to the federal government are left to the states or the people to decide.
What is meant by torque multiplication in the context of torque converter?.
The torque multiplication ratio of a basic torque converter would be around 2.5:1. The most important thing to keep in mind is that all torque converters which are in proper working order increase torque while initiating initial acceleration.
The moment the vehicle first begins to move, the torque multiplier reaches its maximum. The torque multiplication falls off as speed rises. Torque multiplication virtually disappears as the impeller as well as turbine speeds become close to one another.
Force times distance, or T2L2M, would be the dimension of torque. The official SI literature advises using the unit newton-meter (Nm) as well as don't ever the joule, despite the fact that these fundamental dimensions were identical to those used for energy and work. The appropriate abbreviation for the newton meter is Nm.
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Select all statements below that are true about sound waves.
A(Sound is caused when something vibrates.
B(Sound moves by longitudinal waves.
C(Sound is a type of mechanical energy.
D(A medium is not required for sound to travel, but sound can move through a vacuum (empty space).
E(Pitch and loudness are not characteristic of sound waves
The true statement about sound waves include; Sound is caused when something vibrates, and Sound moves by longitudinal waves.
option A and B are the correct answers.
What is a mechanical wave?
A mechanical wave is a type of wave that requires material medium for its propagation.
A mechanical wave can be of two types based on mode of propagation;
longitudinal wavetransverse waveA longitudinal wave travels parallel to the direction of the wave's vibration, while transverse wave travels perpendicular to the direction of the wave's vibration.
An example of longitudinal wave is sound wave. Pitch and loudness are basic characteristic of sound waves because they determine the quality of the sound.
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How many rubber bands are needed to cause an object with half the mass to accelerate six times as quickly?
The number of rubber bands that will cause an object with half the mass to accelerate six times as quickly is 6.
Newton's second law of motion is a quantitative depiction of the progressions that a power can create on the movement of a body. It expresses that the time pace of progress of the energy of a body is equivalent in both greatness and bearing to the power forced on it. The force of a body is equivalent to the result of its mass and its speed.
So,we have given some of parameters like,
number of rubber band = 2acceleration = aLet the mass of the object = mThe force applied to the object by the two rubber bands, according to newton second law of motion is
F = ma
2 = ma--------(eq1)
When the mass of the object is halved, the number of rubber bands required is calculated as;
2/ma=n/(m/2)×6a
=>2/ma=2n/6ma
=>n=(2/ma)×(6ma/2)
=>n=6
Hence,6 rubber bands will be needed.
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(Complete question) is:
Two rubber bands cause an object to accelerate with acceleration a. How many rubber bands are needed to cause an object with half the mass to accelerate six times as quickly?
What is the kinetic energy of a 10 kg object moving at 5 ms?.
The kinetic energy for an 10 kg object at a 5 m/s speed is 125.
Since mass and kinetic energy have a linear relationship on a graph, if an object's mass increases, so too will its kinetic energy. The object's speed is v. The relationship mentioned above demonstrates how an object's kinetic energy is directly proportional to the sum of its mass and velocity.
It's possible that the relationship between kinetic energy and speed means that as an object moves faster, its kinetic energy also rises. Kinetic energy and speed are related in a nonlinear (square) proportional manner (KE ∝ v2), where: 1. As an object's speed doubles, its kinetic energy grows fourfold. 2. As the speed of the object is halved, the kinetic energy falls by a factor of four.
K.E = 1/2 *m *v^2
K.E = 0.5*(10)*(5^2)
K.E= 125
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red light has a wavelength of 6.80x102 nm. The energy of a photon of Red light is (in J) ? I keep getting 2.92e-19 but that's not the correct answer, it's 3.20e-19
A red light photon with a wavelength of 660 nm has energy equal to 3.01 x 10-¹⁹ J
The energy that a single photon carries is known as photon energy. Energy is inversely correlated with wavelength because it is directly proportional to the electromagnetic frequency of the photon. The energy of a photon increases with its frequency.
To determine the energy of photon, use the equation:
E = hc/ λ
Where,
E = the energy of photon
h = Planck's constant (6.626 x 10-³⁴ Js)
c = 2.998 × 10⁸ m/s
λ = wavelength (m)
Hence,
The energy of red light:
E = (6.626 x 10-³⁴ x 2.998 × 10⁸) / (660 x 10-⁹)
= 3.01 x 10-¹⁹ J
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Hypothetical question:
So your in a field, about the size of a football field. There's no fence or anything but you can't get out. There's 100 different people of ages, size, and gender. But, there's one BIG (and angry) gorilla. Who's winning that fight?
Since we're measuring in football fields, I assume the 100 different people are in America. Since, the people aren't stripped of their possessions before this match between a rabid gorilla with no enhancement. And "winning" is consider overcoming or neutralizing an obstacle.
The easy answer is the person with a conceal carry gun/weapon wins.
But that is too simple, lets break it down: the fight is with a 500lb rabid gorilla who is 12x stronger than an average man with canine teeth that can bite up to 1,300 pounds per square inch. The gorilla has bones 3x stronger than a human, thick fur covering its back, and will concentrate their fight on one person, unless distracted. An average person weights around 180lb and most will attempt to flee the rampaging gorilla. Since fighting barehanded is a death sentence, those people who attempt to engage the gorilla 1v1 will perish. The Gorilla will be too strong and tough for anyone deal real physical damage with their bare hands. The best strategy will be to blind the gorilla by poking it's eyes and choking the gorilla by stuffing its nose/throat with clothes/dirt/whatever, but that means getting close and possibly become a sacrifice. Since humans are smarter and will use tools to their advantage, enough people will form the idea described above and some of the 100 contestant will survive with bruises, broken bones, missing limbs, torn flesh, or all of the above.
But ultimately, the gorilla will be defeated.
Give this solution a 5 star to help future contestants.
A sonar signal of frequency 1 x 10^6 Hz has a wavelength of 1.5 mm in * 30 points
water. a) What is the speed of the signal in water? b) What is its period in
water? c) What is its period in air?
a) To find the speed of the signal in water, we can use the equation:
Speed = Wavelength x Frequency
Where Wavelength is given as 1.5 mm and Frequency is given as 1 x 10^6 Hz.
Speed = 1.5 x 10^-3 m x 10^6 Hz = 1.5 x 10^3 m/s
So the speed of the signal in water is 1.5 x 10^3 m/s
b) To find the period in water, we can use the equation:
Period = 1 / Frequency
Where Frequency is given as 1 x 10^6 Hz
Period = 1 / (1 x 10^6) s = 1 x 10^-6 s = 1 microsecond
So the period of the signal in water is 1 microsecond
c) The speed of sound in air is approximately 343 m/s. Since the frequency of the signal remains constant and the speed of sound in air is different than the speed of sound in water, the wavelength of the signal will also be different. However, since the period is inversely proportional to the frequency and is independent of the medium, the period of the signal in air will be the same as in water, which is 1 microsecond.
What is the final acceleration of a ball dropped?.
Every object falling freely accelerates at roughly the same rate near the surface of the earth. A g signifies this acceleration. The earth's center is where it is headed downward.
Constant g = 9.8 m/s^2 downward acceleration is experienced by objects in free fall. Newton's second law of motion, Force = Mass * Acceleration, can be used to describe the motion of an object falling (a).
We can use a little mathematics to find the object's acceleration as a function of the object's mass and the net external force (a = F / m). What is meant by acceleration: a measure of how quickly a speed changes over time. Because it has both a magnitude and a direction, acceleration is a vector quantity.
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What’s an example of an unbalanced force
Answer:
When you kick a football and it moves from one place to another
Explanation:
This means that the unbalanced force troops are acting upon it. The ball moves from one place to another after it's kicked. This is an example of an unbalanced force
A 4600 kg bus traveling at 26.6 m/s can brake and comes to a stop in 47m. What is the force applied by the brakes?
The force applied by the breaks on the bus traveling at 26.6m/s will be 34,546 Newtons.
First we have to calculate the negative acceleration applied by the breaks. We know that [tex]v^{2} - u=2as^{2}[/tex], where V is the final velocity, u is initial velocity, s is the displacement and a is the acceleration Therefore, by putting the given values, we get :
⇒(0 x 0)- (26.6 x 26.6)=2 x 47 x a
⇒-[tex]\frac{706.56}{2*47}[/tex]
⇒-7.51
∴ Acceleration applied by the breaks is -7.51 [tex]ms^{2}[/tex]
Now, by F=ma, we can calculate force as we already know the mass of the bus. Therefore,
⇒m x a
⇒4600kg x (-7.51)ms-2
⇒34,546 Newtons will be the answer.
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What is infrared used for?
. Electrical heating
. Energy efficient lamps
. Satellite communications
. Sun tanning
A cout tep off a ditance of 120 tep. If each tep i 70 cm, what i the ditance in meter?
To calculate the distance in meters, we multiply the number of steps (120) by the length of each step (0.7 m). This gives us the total distance in meters (84 m).
What is the length ?The length of an answer would depend on the question being asked. If the question requires an answer that is 100 words, then the length of the answer should be 100 words. To ensure the answer is plagiarism-free, it is important to cite any sources that are used to provide information or facts within the answer. Additionally, any ideas, words, or phrases used from another source must be given proper attribution.
120 steps x 0.7 m/step = 84 m
Explanation: To calculate the distance in meters, we multiply the number of steps (120) by the length of each step (0.7 m). This gives us the total distance in meters (84 m).
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What information is given on the X-axis of the graph below?
answers:
there is no x axis
years from 1920-2005
co2 concentration
the name of the observatory
The information given on the X-axis of the graph attached is the years from 1920-2005 (option B).
What is a graph?A graph in mathematics or statistics is a data chart (graphical representation of data) intended to illustrate the relationship between a set (or sets) of numbers (quantities, measurements or indicative numbers) and a reference set.
A graph consists of two axes namely; X-axis and Y-axis. The x-axis on a graph is usually drawn left to right and usually shows the range of values of an independent variable.
On the other hand, the Y-axis is the axis on a graph that is usually drawn from bottom to top and usually shows the range of values of variable dependent on one other variable.
Therefore, according to the graph illustrated above, the x-axis shows the years from 1920-2005.
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Which part of the microscope is most important in determining its resolving power? Why?
The light source and aperture are most important in determining the resolution of the microscope, as the resolution of the microscope is determined by the cone of light entering the lens, the refractive index, and the wavelength of the light.
The most important factor in determining the resolution of a microscope is the numerical aperture (NA) of the objective lens. The higher the NA, the higher the resolution. However, other factors also play a role. The numerical aperture of the condenser that forms the beam of light that illuminates the object on the slide should match the numerical aperture of the objective lens (or at least not be much smaller). Another factor is the refractive index of the medium between the objective lens and the slide. For low magnification lenses (low NA) this medium is usually air. Air has a refractive index of 1.0 (for the wavelengths of light used in microscopy).
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Please answer this fast.
Answer:If there are four pinholes, each gives an individual image which then overlaps to result in the final image. The final image will not be coherent and clear.Furthermore, a 1cm hole is too big to be used as a pinhole. One of the main criteria of the pinhole camera is that the hole should be very small to provide infinite field depth. Thus, a 1cm hole reduces the sharpness of the image.
Explanation:
