Describe different methods for strengthening a material and apply: ð â ðªððððððð & ðð = ðà ðð

Answer:

So the people in the ring don't get hurt or break anything on impact once they hit the floor

Answer:

Explanation:

a). Vertical component of vector B = Bsin(45)

                                                     = 40sin(45°)

                                                     = 28.28 units

Horizontal component of vector B = Bcos(45°)

                                                         = 40cos(45°)

                                                         = 28.28 units

Vertical component of vector C = Csin(45°)

                                                     = 30sin(45°)

                                                     = 21.21 units

Horizontal component of vector C = Ccos(45°)

                                                         = 30cos(45°)

                                                         = 21.21 units

Vertical forces = A + Bsin(45°) - Csin(45°)

                       = 20 + 28.28 - 21.21

                       = 27.07

Horizontal forces = Bcos(45°) + Ccos(45°)

                             = 28.28 + 21.21

                             = 49.49 units

b). Magnitude of resultant force = \(\sqrt{(27.07)^2+(49.49)^2}\)

                                                = \(\sqrt{3182.045}\)

                                                = 56.41 units

c). Direction of the resultant force → Along vector B (at an angle of 45° from the horizontal line)

Answer:

1.54 = sin 35/sin r

sin r = 0.57/1.54 =0.37

r = sin^-1( 0.37)

=21.7°

Answer:

red supergiants can

Answer:

All extended structure compounds form cubes. Sodium and chlorine atoms both have cubical shapes. In the extended structure of NaCI, atoms are arranged in a cubical pattern

its should be 2.0 and 4.5 on it

The concentration of nitrogen will be 29.12 kg/m³.

The thickness of the steel sheet, l = 5.0 mm

The diffusion coefficient of nitrogen in steel, D = 46.70 m²/s

The diffusion flux, J = 53.81 kg/m²s

The initial concentration of nitrogen in steel, C1 = 39.52 kg/m³

The final concentration of nitrogen in steel, C2 = 29.12 kg/m³

The required distance, x = ?

The concentration profile is linear. The formula for diffusion flux is J = -D * (dC/dx), where dC/dx is the concentration gradient in the x direction. Here, the negative sign represents the diffusion of nitrogen in the direction of decreasing concentration.

Since the concentration profile is linear, we can use the following equation: dC/dx = (C2 - C1) / x

We can now substitute the given values in the diffusion flux formula:

J = -D * (dC/dx) = -D * (C2 - C1) / x

Solving the above formula for x, we get

x = -D * l / (J * (C2 - C1)) = -46.70 * 5.0 / (53.81 * (29.12 - 39.52))

≈ 1.53 mm

Therefore, the concentration of nitrogen will be 29.12 kg/m³ at a distance of approximately 1.53 mm from the high-pressure surface.

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Adding a third resistor in series with two resistors connected across a constant voltage source without internal resistance will cause the power supplied by the source to decrease.

The reason is that adding the extra resistor will increase the total resistance and decrease the current through all three resistors. The new total resistance is: Rtot = R1 + R2 + R3

And as we see from Ohm's Law, V/I = R, so we can also express this as: V2/I2 + V1/I1 + V3/I3 = V4/I4.

From here, we can see that when we add a third resistor in series with two others, we have more voltage across each individual part of our circuit, but less current flowing through each part of it. That means our total power supplied by the source decreases because there is less current flowing through all three resistors combined.

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The current through the vertical resistor immediately after the switch is closed is I = V/R. The correct answer is A. V/R.

Immediately after the switch is closed, the current through the vertical resistor can be found using Ohm's Law, which states that V=IR, where V is the voltage across the resistor, I is the current through the resistor, and R is the resistance of the resistor.

Since the switch has been open for a long time and the current is zero everywhere, there is no charge buildup on the capacitor, so the voltage across it is also zero. This means that the voltage across the vertical resistor is equal to the battery voltage, V.

Therefore, the current through the vertical resistor immediately after the switch is closed is I = V/R. The correct answer is A. V/R.

When the switch is opened back up, the inductor resists any change in current, so the current through it cannot change instantaneously. Therefore, the voltage across the inductor immediately after the switch is opened is the same as the voltage across it just before the switch was opened.

Since the battery puts out 12 V and the switch has been closed for a long time, the current through the inductor is at its maximum value, which is given by I = V/R, where R is the total resistance of the circuit. The total resistance is equal to the sum of the resistances of the vertical and horizontal resistors, which is 3R.

Therefore, the current through the inductor is I = 12/3R = 4/R. The voltage across the inductor is given by V = L(dI / dt), where L is the inductance of the inductor and dI/dt is the rate of change of current through it.

Since the current through the inductor is constant, dI/dt = 0, so the voltage across the inductor is zero. The correct answer is A. 0.

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According to Erik Erickson, people who are most likely to suffer from loneliness are those who have not successfully completed the intimacy versus isolation stage of psycho social development. This stage occurs during young adulthood and involves the development of close, intimate relationships with others. If someone is unable to successfully navigate this stage, they may experience feelings of loneliness and isolation throughout their lives.

There are a number of factors that can contribute to loneliness, including:

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Answer:

On Bode's advice, Herschel named his newly discovered planet after: the Greek god Uranus.

Explanation:

Herschel named his newly discovered planet Uranus on Bode's advice for a couple of reasons:

Mythological Naming Convention: During that time, it was a common practice to name celestial objects after mythological figures, particularly gods from Greek and Roman mythology. Bode suggested following this convention and recommended that Herschel choose a name from Greek mythology for the newly discovered planet.

Connection to the Sky: Uranus was chosen as the name for the planet because it was the name of the Greek god of the sky. Given that Herschel had discovered a celestial object in the sky, naming it after the god associated with the sky seemed fitting.

By naming the planet Uranus, Herschel paid homage to the mythological tradition of naming celestial bodies while also establishing a connection between his discovery and the vastness of the sky.

Hope this helps!

Answer:

mars is a fourth planet of the sun and the second planet in the solar system

moon is a natural satellite of the earth it isthe fifth largest moon in the solar system

Answer:

A lower frequency and a longer wavelength is correct on edge 2021

please thank the person above me though, they deserve it.

These snakes can sense electromagnetic waves that have a lower frequency and a longer wavelength.

With almost ineffective hearing and vision, snakes can be extremely fast animals. Snakes can use chemoreceptors, heat, and even their tails to recognize prey and mates. With mostly ineffective hearing and vision systems, snakes can be extremely fast animals.

They also “see” in infrared. Thanks to the mechanism, they can track prey up to a meter away by the heat of their bodies. They use a simple organ, the loreal pit, located near the nostrils.

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Answer:Apparently the further displacement should be of other 3 cm; but, let's consider the development of the spring on one vertical plain, and fixed on a wall by the upper end.

Now the spring doesn't look circular; but as a stick fixed on the wall. Before placing the first 100 grams weight, the stick is not horizontal; but its overhanging end is lower by the measured length of the spring at rest. The length line of the spring with its horizontal projection line forms an angle.

The first 100 grams load is decomposed in function of the new angle: one component in line with the stick, the other one perpendicularly respect to it. The same happens with 200 grams.

The flection momentum is given by the perpendicular component of the load with respect to the stick line in overload, and the measure of the stick itself. Such component is inversely proportional to the other component, and decreases in relation to higher load while the other component (that doesn't produce flexion) encreases.

I assume that I can't calculate the new displacement because is not given the height of the spring at rest, the length of the development of the spring. Accordingly, I cannot calculate all various angles of the stick in relation with gravity.

Explanation:

When a 25 g mass is attached to the same spring, the spring is stretched by 2 cm.

Hooke's law states that the applied force [F] equals a constant k times the displacement or change in length [x].

Mathematically - F = - Kx

Given is a situation in which a stretch of 8 cm is caused by a 100g mass.

From this, we can write -

Mass [m] = 100 g = 0.1 Kg

Displacement [x] = 8 cm = 0.08 m

According to the question -

The spring constant [K] can be calculated using Hook's law as -

F = -Kx

mg = -Kx

K = - mg/x

K = - (0.1 x 9.8) / 0.08

K = - 12.25 N/m

|K| = 12.25 N/m

Now, when mass [M] = 25g = 0.025 Kg, using Hook's law -

|F| = |- kx| = kx

Mg = 12.25x

x = Mg/12.25

x = (0.025 x 9.8)/12.25

x = 0.02

x = 2 cm

Therefore, when a 25 g mass is attached to the same spring, the spring is stretched by 2 cm.

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Answer:

Vector quantity

Explanation:

The classification of stars based on their spectral type follows the sequence O, B, A, F, G, K, and M, with O-type stars being the hottest and M-type stars being the coolest. The habitable zone, also known as the "Goldilocks zone," refers to the region around a star where conditions may be suitable for the existence of liquid water on the surface of a planet.

G-type stars, such as our Sun (classified as G2V), are considered to be within the optimal range for habitability. These stars have a stable and long-lasting main sequence phase, providing a relatively steady energy output over billions of years. Planets orbiting within the habitable zone of a G-type star have the potential to maintain a stable climate, with the right conditions for liquid water to exist. While other star types like F-type, K-type, and even some M-type stars can have habitable zones, G-type stars are generally considered to provide more favourable conditions for life.

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Answer:

Isaac Newton and John Locke were significant pieces in the enlightenment by applying scientific notions and giving individuals the courage to break away from government. Isaac Newton came up with the scientific study that the universe was subjugated by the force to gravity, distance, and mass.

Isaac Newton's revolutionary achievements in mathematics, physics, and astronomy made a vital contribution to the Enlightenment. English mathematician, physicist, astronomer, alchemist, theologian, and author Sir Isaac Newton PRS.

Our knowledge of the natural world and the operations of the cosmos has been fundamentally altered by his laws of motion and universal gravitation. Modern physics was founded on Isaac Newton's Mathematical Principles of Natural Philosophy and Optics, which also contributed to the development of the scientific method as a technique of learning new things. His work contributed to the replacement of the static, earth-centered Aristotelian view of the cosmos with a dynamic, universe-centered one that was guided by natural laws and mathematical concepts. The focus on reason, evidence, and scientific investigation during the Enlightenment helped establish the groundwork for contemporary science, and Newton's theories and findings were a vital contributor to this movement.

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A herd of deer would be a population (in this case, the individual is the deer).

A population is a group of individuals of the same species living in a particular geographic region.

Moreover, a community is a group of populations living together in a particular ecosystem.

In conclusion, a herd of deer would be a population (in this case, the individual is the deer).

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The North Celestial Pole is 35° above your northern horizon. This tells you that: You are at latitude 35° N. Option(A).

The North Celestial Pole refers to the point in the sky directly above Earth's North Pole. As you observe the North Celestial Pole at an angle of 35° above your northern horizon, it indicates that you are located at a latitude of 35° N.

The angle between the North Celestial Pole and the observer's horizon corresponds to their latitude in the northern hemisphere. Therefore, by measuring the angle of the North Celestial Pole above the horizon, one can determine their approximate latitude.

Latitude is a geographic coordinate that specifies the north-south position of a point on Earth's surface. It measures the angular distance north or south of the equator, ranging from 0° at the equator to 90° at the poles.

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In the experiment, absorbance was measured using a spectrophotometer. A spectrophotometer is a piece of equipment used in science to gauge how much light a sample in a solution absorbs.

The basic principle of a spectrophotometer is to measure the intensity of light before and after it passes through a sample. The difference in intensity is used to determine the amount of light absorbed by the sample, which in turn can be used to calculate the concentration of the substance in the sample.

There are two main types of spectrophotometers: single-beam and double-beam. In a single-beam spectrophotometer, the sample and reference cuvettes are alternately placed in the path of a single beam of light. In a double-beam spectrophotometer, the sample and reference cuvettes are placed in the path of two separate beams of light, which are then compared to each other. Spectrophotometers are widely used in analytical chemistry, biochemistry, and other scientific fields to analyze the composition of a wide range of samples, including biological fluids, environmental samples, and industrial materials. They are also used in quality control processes for pharmaceuticals, food products, and other consumer goods.

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The equation  that approximates the phase of \(y_ss(t)\) from Figure 1 is option 15: (t y - (2/π)(t 1 + t 2 )).

In the given options, we are asked to select the equation that approximates the phase of \(y_ss(t\)) from Figure 1. The system is approximated as a lower-order system with the open-loop transfer function\(G_OL(s)\)= s(s+5.8)(s+1.4+3.4j)(s+1.4-3.4j)/0.35(s+5.7). To control the system, a controller C(s) = K is used, where the input voltage v is given by v = K(r - y), with r being the reference signal. The equation for the phase of\(y_ss(t)\) in option 15: (t y - (2/π)(t 1 + t 2 )) is derived from the response plot of y(t) after it reaches steady-state. Here, t y represents the time of the first peak in y(t) after t = 50 seconds, t 1 is the closest peak in the reference signal preceding t y, and t 2 is the closest peak following t y. By selecting option 15, we can approximate the phase of \(y_ss(t)\)based on these values and the given system dynamics.

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Answer:

Whenever energy gets transformed, the total

energy remains unchanged. This is the law of

conservation of energy. According to this law,

energy can only be converted from one form

to another; it can neither be created nor

destroyed. The total energy before and after

the transformation remains the same.

As long as the applied stress is removed, a material that is linearly elastic experiences stress and strain that are directly proportional within the elastic limit.

In a material that is linearly elastic, the Young's modulus (E), stress, and strain are all related by the equation you supplied, E =. Here is a quick definition of each phrase:

(E) Young's modulus It is a way to gauge how hard or stiff a material is. Within the elastic limit of the material, it indicates the stress to strain ratio. The stiffer the material, the higher the Young's modulus.

Stress (): The force exerted to a material's surface area is called stress. The internal resistance of a material to deformation under an applied force is measured by stress.

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Answer:

C. 14.93 m

Explanation:

The given frequency of the wave, f = 100 Hz

The given equation for the wave speed, v, is presented as follows;

v = f × λ

The speed of sound in water, v = 1,493 m/s

Therefore, we get;

The wavelength, λ = v/f

∴ λ = 1,493 m/s/(100 Hz) = 14.93 m

The wavelength, λ = 14.93 m.

Answer:

B. its speed increases

Explanation:

A brass rod is encased in aluminium. The speed of a sound wave in this decreases when it moves from the aluminium into the brass medium. Thus, the correct option is A.

Sound travels in different mediums in the form of waves. The speed of sound is the speed with which the sound wave travels in a medium. The speed of the wave depends on the density and the elasticity of the medium through which the sound waves travel. In general, the sound wave travels faster in the liquid mediums in comparison to the gas medium and these are quicker in solid mediums than in liquid mediums. Thus, the greater the elasticity and the lower the density of the waves, the faster the sound waves travel in that medium.

The speed of sound in aluminium is 5100m/s and in the brass medium, it is 6,923. So, if the sound wave is moving from aluminum metal to the brass medium, we can clearly observe that there is decrease in the speed of sound. So, we can say here that is the speed is decreases.

Therefore, the correct option is A.

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Even though you did not take any measurements, (2m/s2, 3N) is another data point that would be fair to provide.

To determine if there is another reasonable data point that can be added, we can plot the force and acceleration data to see if there is a clear relationship between the two variables.

From the plot, we can find that there is a clear linear relationship between the force and acceleration data. We can also calculate the slope of the line using the formula:

slope = Δa / ΔF

where Δa is the change in acceleration and ΔF is the change in force. From the given data, we can use the first and last data points to calculate the slope:

slope = (1.8 m/\(s^2\) - 0.5 m/\(s^2\)) / (1 N - 0.25 N) = 3.6 m/\(s^2\)/N

Now, we can use the slope to predict the acceleration for another force value. For example, we can predict the acceleration for a force of 2 N:

a = slope * F = 3.6 m/\(s^2\)/N * 2 N = 7.2 m/\(s^2\)

Data point to add to the plot is (2 N, 7.2 m/\(s^2\))

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The dripping faucet onto the wave causes the frequency to stay the same throughout, it just moves up and down.

When a wave is passed through the single slit, diffraction occurs. The light spreads out and after it passes through the slit, it interferes with itself.

Answer:

Freefall

Explanation:

Hi the answer is freefall, hope this helps :)

Answer:

Centripetal acceleration = 8m/s²

Explanation:

Given the following data;

Radius, r = 2m

Velocity = 4m/s

To find the centripetal acceleration;

Centripetal acceleration = V²/r

Substituting into the equation, we have;

Centripetal acceleration = 4²/2

Centripetal acceleration = 16/2

Centripetal acceleration = 8m/s²

Therefore, the dog's centripetal acceleration is 8 meters per seconds square.