difference between precion and accuarcy

Answer:

Its scatter plot graph.

Explanation:

I took the test and got it right soo your welcome.

The functional dependence of frequency and period under variation of a linear size of a ring can be described mathematically as follows: the period is proportional to the circumference of the ring.

The frequency is inversely proportional to the circumference. This means that as the size of the ring increases, the period of oscillation also increases, while the frequency decreases. When it comes to comparing the periods of oscillation for rings with different radii, it's important to note that the period is also dependent on the mass and stiffness of the ring. However, assuming all other factors remain constant, the period of oscillation for a larger ring will be longer than that of a smaller ring. This is because the circumference, and therefore the distance traveled during each oscillation, is greater for a larger ring. Overall, understanding the functional dependence of frequency and period on the size and shape of a ring can provide valuable insights into the behavior of oscillatory systems. By manipulating these variables, engineers and scientists can design and optimize systems that exhibit desired oscillatory behavior.

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Where a tap supplies water at 26°c while another supply at 82°c. If a man wishes to bath with water at 40°c, then the ratio of the mass of hot water to that of cold water is: 1/3.

The ratio of the mass of hot water to that of Cold water is determined as follows:

M₁C (82  40) = M₂C (40-26)

Where M₁C is the Mass of Tap 1; and

M₂C is the Mass of Tap 2.

Thus,

M₁C (82  40) = M₂C (40-26)

M₁/M₂ = 14/42

= 1/3

Thus, it is right to state that the ratio of the mass of hot water to that of cold water is: 1/3.

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The measurement of body temperature is an example of a variable that uses option A, interval scale.

A scale with an interval has order and a meaningful difference between two values. Temperature (Fahrenheit), temperature (Celsius), pH, SAT score (200-800), and credit score are a few examples of interval variables (300-850).

One variable that uses interval scale is the measurement of body temperature.

Only ratio scales have a genuine zero, even though interval and ratio data can both be categorized, sorted, and spaced equally apart between consecutive values. As 0 is not the lowest attainable temperature, temperature in Celsius or Fahrenheit, for instance, is measured on an interval scale.

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The wavelength of the second line in the Balmer series is 304 nm and fourth line is 1093.7 nm.

The Balmer series in the hydrogen spectrum has spectral lines that are in the visible spectrum.

The wavelength is determined using the Balmer-Rydberg equation.

Wavelength for any two selected lines from the Balmer series of the spectra of hydrogen,

1 / λ = R (1/ n₁² - 1/ n₂²)

Where,

λ is the wavelength,

R is the Rydberg constant (1.0974 x 10⁷ m⁻¹),

n₁ and n₂ are integers where n₂ > n₁.

First, let us choose n₁ = 2, which is the second energy level and we will calculate the wavelength of the second line.

n₂ = 3λ = R(1/2² - 1/3²)

λ = R (4/36 - 1/9)

λ = R (1/36) = (1.0974 x 10⁷ m⁻¹) / 36

λ = 3.04 x 10⁻⁷ m = 304 nm

The wavelength of the second line in the Balmer series is 304 nm.

Now, we will calculate the wavelength of the fourth line.

n₂ = 5n₁ = 2λ = R (1/2² - 1/5²)

λ = R (4/100 - 1/25)

λ = R (3/100) = (1.0974 x 10⁷ m⁻¹) / 100 x 3

λ = 1.0937 x 10⁻⁷ m = 1093.7 nm

The wavelength of the fourth line in the Balmer series is 1093.7 nm.

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Answer: The horizontal component of the force is 47.754 N and the vertical component of the force is 14.818N.

Explanation:

Answer:

5

Explanation:

u= 4

v= 6

Vavr = u+v/2

4+6/2

10/2

Vavr = 5

The average speed of the particle over the interval from t = 0 to t = 3 seconds is 7 m/s.

In physics, average velocity is a measure of the average speed and direction of an object over a certain period of time. It is calculated by dividing the total displacement (the change in position of an object) by the total time interval during which the displacement occurred. Average velocity is a vector quantity, meaning it has both magnitude and direction.

Average velocity is used to describe the overall motion of an object, and it can be used to make predictions about the future position of an object if its velocity remains constant. However, it is important to note that the average velocity of an object may be different from its instantaneous velocity, which is the velocity of the object at a specific moment in time.

Calculation

The position of the particle is given by:

x = \(3t^2\) - 4t + 1

Taking the derivative of the position function with respect to time, we get the velocity function:

v = dx/dt = 6t - 4

At t = 2 seconds, the velocity of the particle is:

v = (6 x 2) - 4 = 8 m/s

The average velocity of the particle over the interval from t = 0 to t = 3 seconds is:

Δx/Δt = (x3 - x0)/(t3 - t0)

Substituting the given values, we get:

Δx/Δt = (3 - 4(3) + 1 - (3\((0)^2\)- 4(0) + 1)) / (3 - 0)

Δx/Δt = (22 m) / (3 s)

Δx/Δt = 22/3 m/s

Therefore, the average velocity of the particle over the interval from t = 0 to t = 3 seconds is 22/3 m/s.

The average speed of the particle over the same interval is given by:

average speed = total distance / total time

The total distance traveled by the particle is the length of the path it traces, which is the same as the displacement between its initial and final positions. The initial position of the particle is:

x0 = 3\((0)^2\) - 4(0) + 1 = 1

The final position of the particle is:

x3 = 3\((3)^2\) - 4(3) + 1 = 22

The displacement between the initial and final positions is:

Δx = x3 - x0 = 22 - 1 = 21 m

The total time elapsed is:

Δt = t3 - t0 = 3 - 0 = 3 s

Substituting the values, we get:

average speed = (21 m) / (3 s) = 7 m/s

Therefore, the average speed of the particle over the interval from t = 0 to t = 3 seconds is 7 m/s.

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A particle moves along a straight line such that its position is defined by s=(t2-6t+5) m. Determine the average velocity, the average speed, and the acceleration of the particle when t=6s.

0.840s is the half-life of lithium-8 if the decay constant is 0.825/s. The decay constant is unique to each radioactive substance and measures the speed of radioactive decay. Therefore, the correct answer is option D.

The half-life of lithium-8 can be calculated using the formula:

\(t1/2 = ln(2) / \lambda\)

Where t1/2 is the half-life, ln is the natural logarithm, and λ is the decay constant. Substituting the given decay constant of 0.825/s into the formula:

t1/2 = ln(2) / 0.825/s

t1/2 ≈ 0.840s

Therefore, the half-life of lithium-8 is approximately 0.840s. The formula for half-life is a fundamental concept in nuclear physics, which determines the time required for a radioactive substance to decay by half of its original quantity. The decay constant, which is specific to each radioactive substance, measures the rate at which radioactive decay occurs.

The higher the decay constant, the shorter the half-life, indicating that the substance is more unstable and decays faster. In this case, the decay constant of lithium-8 is 0.825/s, indicating that it is relatively unstable and has a short half-life of approximately 0.840s.

In summary, the half-life of lithium-8 is approximately 0.840s with a decay constant of 0.825/s. Therefore, the correct answer is option D.

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Answer:

C Thy make the force exert all at once

When particles are moving away from each other or closer to each other, both kinetic and potential energy changes are involved.

As the particles move closer together, the potential energy between them will increase then the kinetic energy of the particles decrease.

This is taking place because the particles are traveling in opposition to a force, such as an electrostatic or gravitational attraction, which is doing work on the particles and raising their potential energy.

The particles are slowing down as they move against this force, which results in a loss of kinetic energy.

Therefore, when particles move apart or together, both kinetic and potential energy changes are involved. The two types of energy are connected and can switch between each other.

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Answer:

25 minutes

Explanation:

If Susan and Jake take Susan's car for a drive and get stuck in the mud again. The MA of the tree branch lever is 3.75.

To find the MA (mechanical advantage) of the tree branch lever, we need to use the formula:

MA = output force / input force

In this case, the output force is the weight of the back of Susan's car, which is 750 N. The input force is the force applied to the tree branch lever, which is 200 N.

So, substituting these values into the formula, we get:

MA = 750 N / 200 N

MA = 3.75

Therefore, the MA of the tree branch lever is 3.75.

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A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (recessed inward). Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration. Distorting mirrors are used for entertainment. They have convex and concave regions that produce deliberately distorted images. They also provide highly magnified or highly diminished (smaller) images when the object is placed at certain distances.

Given that spring constant, k = 100 N/m and displacement, x = - 5mm = - 0.005 m

The formula of restoring force according to Hooke's law,

Substituting the values, we get

Thus, the force is 0.5 N

(a) The kinetic energy of the cart when it moves is 2/3 the way down is 1/3mgh.

(b) The total mechanical energy of the cart at the given height of 5 m is 5mg.

The potential energy of the cart when it is 2/3 way down the given height of 5 m is calculated as follows;

ΔP.E = mghf - mgh₀

ΔP.E = mg(hf - h₀)

ΔP.E = mg(2h/3 - h)

ΔP.E = -¹/₃mgh

ΔK.E = -ΔP.E

ΔK.E = ¹/₃mgh

M.A = P.E + K.E

M.A = ²/₃mgh + ¹/₃mgh

M.A = mgh

M.A = mg(5)

M.A = 5mg

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Given that Radius of the disc, r = 20 cm = 0.2 m Mass of the disc, m = 20 kgAngular acceleration, α = 4 rad/s²

We are to find the torque required to create this angular acceleration.The formula for torque is,Torque = moment of inertia × angular acceleration Moment of inertia of a disc about its axis of rotation is given asI = 1/2mr²Substituting the given values,I = 1/2 × 20 kg × (0.2 m)² = 0.4 kg m²Therefore,Torque = moment of inertia × angular acceleration= 0.4 kg m² × 4 rad/s²= 1.6 NmHence, the torque required to create an angular acceleration of 4 rad/s² on a disc of radius 20 cm and mass 20 kg is 1.6 Nm.

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Answer: Subtractive colors absorb OR subtract some lights causing it to reflect, and creating white.

Explanation:

Subtractive colors are created by completely or partially absorbing (or subtracting) some light wavelengths and reflecting others.

The required original velocity of the bowling ball is calculated to be 6 m/s.

The total momentum prior to and following a collision are identical in a closed system.

From the principle of conservation of momentum,

M × U + m × u = M × V + m × v ----(1)

Where,

M = Mass of the bowling ball (M = 8 kg)

m = Mass of the pin (m = 2 kg)

U = Initially, the bowling ball's speed

u = Initial velocity of the pin (u = 0 m/s)

V = Final velocity of the bowling ball (V = 2 m/s)

v = Final velocity of the pin (v = 8 m/s)

Substitute these values in (1) and to solve U:

8(U)+2(0) = 8(4)+2(8)

8U = 32 + 16

8U = 48

U = 6 m/s

Thus, the initial velocity of the bowling ball is calculated to be 6 m/s.

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A) The mass of 28.76 mL of acetone is approximately 22.7 g.

B) The volume of 6.40 g of acetone is approximately 8.12 mL.

A) To determine the mass of 28.76 mL of acetone, we need to know the density of acetone. The density of acetone is approximately 0.789 g/mL. Therefore, we can calculate the mass as follows:

Mass = Volume * Density

Mass = 28.76 mL * 0.789 g/mL

Performing the calculation:

Mass ≈ 22.67564 g

Rounding the result to the correct number of significant figures, the mass of 28.76 mL of acetone is approximately 22.7 g.

B) To determine the volume of 6.40 g of acetone, we can rearrange the formula:

Volume = Mass / Density

Volume = 6.40 g / 0.789 g/mL

Performing the calculation:

Volume ≈ 8.116 g/mL

Rounding the result to the correct number of significant figures, the volume of 6.40 g of acetone is approximately 8.12 mL.

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Answer:

As the earth is an oblate spheroid, its radius near the equator is more than its radius near poles. Since for a source mass, the acceleration due to gravity is inversely proportional to the square of the radius of the earth, it varies with latitude due to the shape of the earth.

Formula: g = GM/r2

Dimensional Formula: M0L1T-2

Values of g in SI: 9.806 ms-2

Explanation:

Please Mark me brainliest

Answer:

♡

Explanation:

As the earth is an oblate spheroid, its radius near the equator is more than its radius near poles. Since for a source mass, the acceleration due to gravity is inversely proportional to the square of the radius of the earth, it varies with latitude due to the shape of the earth.

Answer:

A delta ray is produced by the electromagnetic interactions between a heavy particle and the atoms in the material. These interactions cause the delta ray to be deflected from its original path, resulting in its emission at right angles to the path of the heavy particle.

Answer:

Yes.

Explanation:

The pressure varies as per the depth of the container

Answer:

Explanation:

The color of the object is reflected by the object other colors are absorbed by the object.

Here object appears in red color so red color is reflected by the object and other colors are absorbed.

The axial load at which the restoring moment equals the upsetting moment is called the critical load.

Axial load is the force applied on an object parallel to its axis. The axial load capacity of the structure is significant in structural design. In any given design, determining the amount of load-bearing capacity the structure can handle is essential.

The upsetting moment is the bending moment caused by axial loads. It is equal to the product of the axial force and the distance between the neutral axis and the point of application of the axial force.

The restoring moment is the opposite of the upsetting moment. When an axial force is applied to a column, the column bends, causing the upsetting moment. The material in the column will generate a restoring moment to maintain equilibrium. The axial load at which the restoring moment equals the upsetting moment is called the critical load, which is the answer to your question.

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The process of the blue giant start includes stellar Formation, main Sequence Phase, expansion and Cooling, helium Fusion, variable Behavior, and supernova.

The stage in the formation of a star just before nuclear reactions ignite. After a massive red giant star ejects its outer layers, its hot inner core is exposed, and it becomes a blue giant star.

During the process of a blue giant star,  once a star consumes all its hydrogen, the core superheats and pushes its surface layers far out into space.

The process of the blue giant start includes;

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Answer:

B. creating business products

Explanation:

All of the following are job duties an industrial/organizational psychologist may perform except B. creating business products

The creation of business products is the one task that an industrial/organizational psychologist cannot accomplish, hence option B is the appropriate response.

Psychology is the name given to the scientific study of the mind and behavior. Psychiatrists are engaged in an ongoing study to better understand the mind, brain, and personality.

the psychological schools of thought known as biological, psychodynamic, behavioral, cognitive, and humanistic.

The business and productivity facets of psychology are covered in industrial/organizational psychology.

Within a company organization, an industrial/organizational psychologist carries out a variety of tasks including boosting employee productivity, enhancing business operations, and offering management advice.

An industrial/organizational psychologist does not create the company product.

Thus, with the exception of developing business products, all of the following are tasks that an industrial/organizational psychologist may carry out. Option B is the best response.

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Answer: Plastids are the site of manufacture and storage of important chemical compounds used by the cells of autotrophic eukaryotes

Explanation:

Answer:

Plastids: any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food.

Explanation:

Could be that?

Metals' complex structures account for their high melting and boiling temperatures as well as their conductivity. A metal's characteristics can be changed by adding another substance to it to create an alloy.

Of all the metals, silver has the highest electrical conductivity. In actuality, silver is the standard by which conductivity in all other metals is measured. Silver ranks 100 on a scale of 0 to 100, followed by copper at 97 and gold at 76.

Due to the fact that the atoms in metals form a matrix through which outside electrons can easily travel, metals are efficient conductors of both electricity and heat. They produce a sea of electrons surrounding the positive nuclei of the interacting metal ions rather than orbiting their individual atoms.

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To increase power, three factors that can be decreased are sample size, variability, and significance level.

Power refers to the ability of a statistical test to detect a true effect or difference when it exists. Increasing power is desirable as it reduces the chances of committing a Type II error, which is failing to reject a false null hypothesis. To increase power, three factors can be decreased:

1. Sample size: A larger sample size increases the likelihood of detecting a true effect, thereby increasing power. Decreasing the sample size would have the opposite effect.

2. Variability: When the data points in a sample are spread out or have high variability, it becomes more challenging to detect a true effect. By reducing variability through careful study design or controlling confounding factors, power can be increased.

3. Significance level: The significance level, often denoted as alpha (α), represents the threshold for rejecting the null hypothesis. By decreasing the significance level (e.g., from 0.05 to 0.01), the test becomes more stringent, and it requires stronger evidence to reject the null hypothesis, thereby increasing power.

In summary, to increase power in a statistical test, one can decrease the sample size, reduce variability, and lower the significance level. These adjustments enhance the test's ability to detect true effects and improve the reliability of the statistical analysis.

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