Why would a chemist need to perform both a scan across all wavelengths and a scan at a specific wavelength?.

If you look at courage and if you look at the brain, there is one particular brain structure that plays a very important role when it comes to courage and your own performance. This part of the brain is called the amygdala. The amygdala is a brain structure that is very small, and we have two of them, one of the left side of the brain, one on the right side of the brain. They’re very small and look like an almond. Amygdala is also the Latin word for almond. Even though they are small, they amygdala is also extremely powerful. It plays a very important role in our survival. Whenever there is a real danger outside, it will trigger a fight, flight or freeze response, so you will fight danger, run away, or just be blocked in your own emotions, you will freeze, perhaps you will hide. The amygdala is very important for our survival and for many emotions in general, but in many situations, the amygdala will also become active when there is no real danger, for example, standing on stage and holding a presentation, leading a difficult conversation. These are two examples where there’s no real danger, but nevertheless, the amygdala can be triggered and cause this feeling of nervousness and anxiety. It’s these feelings of nervousness, anxiety or insecurity that will also block us in our potential to hold a presentation or to lead a good conversation.

a) Angular frequency is  12.75 rad/s b)  The wave number is 33.59m c)

y ( x ,t) = 2.34  x  sin(33.59 x - 12.75t)

Given,

wavelength = λ = 18.7 cm

                   = 0.187 m

amplitude , A = 2.34 cm

v = 0.38 m/s

A) angular frequency = ?

f = v/λ

f = 0.38/1.87 = 2.03

angular frequency ,

ω = 2π f

ω = 2π x 2.03

ω = 12.75 rad/s

B) the wave number,

K = 2π/λ = 33.59m

c) as the wave is propagating in -x direction, the sign is positive between x and t

y ( x ,t) = A sin(k  x - ω t)

y ( x ,t) = 2.34  x  sin(33.59 x - 12.75t)

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Carbon -14 is contained in all living things.

The basic idea behind radiocarbon dating is that all living things absorb carbon from their environment, including some naturally occurring radioactive carbon-14. Although the plant or animal stops absorbing when it dies, the radioactive carbon it has stored continues to degrade.

We know that the half life of the Carbon -14 isotope is quite long and is about 5730 years and this is why it is possible to continue to use the carbon -14 nucleus as a tool for the dating of materials.

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The magnitude of the girl's acceleration is determined as 0.12 m/s².

The magnitude of the girl's acceleration is calculated by applying Newton's second law of motion as follows;

F (net) = ma

where;

The mass of the girl = 35.7 kg

The net force on the girl = 4.35 N

The magnitude of the girl's acceleration is calculated as;

a = F / m

a = 4.35 N / 35.7 kg

a = 0.12 m/s²

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The term "ferromagnetic" refers to iron or oxide of irons.

Ferromagnetism is a physical phenomenon in which certain electrically uncharged materials strongly attract others.

Two materials found in nature, lodestone (or magnetite, an oxide of iron, Fe3O4) and iron, have the ability to acquire such attractive powers, and they are often called natural ferromagnets

ferromagnetic materials are used in making magnets such as electromagnets for electronic devices. And it is a very important industrial raw material.

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Answer:

The force that pulls the car down is Wₓ = 14052.6 N and the one that pushes the car up is F = 26552.6 N

Explanation:

For this exercise we will use Newton's second law, let's set a reference system where the x axis is parallel to the plane, in the adjoint we can see the forces in the system.

           sin  35 = Wₓ / W

            cos 35 = W_y / W

            Wₓ = W sin 35

            W_y = W cos 35

            Wₓ = 2500 9.8 sin 35

             Wₓ = 14052.6 N

let's write the equations for each axis

and

Y axis  

       N-W_y = 0

       N = W_y

X axis  

       F -Wₓ = m a

       F = Wₓ + m a = mg sin 35 + m a

       F = m (a + g sin 35)

let's calculate

       F = 2500 (5 + 9.8 sin 35)

       F = 26552.6 N

The force that pulls the car down is Wₓ = 14052.6 N and the one that pushes the car up is F = 26552.6 N

Cyclotron to make 1 milligram of the isotope fluorine-18 for use a a diagnostic tool with it PET scanner. It seems that the hospital should plan to make more F-18 the next morning, as the amount remaining at midnight is very small.

The half-life of F-18 is 1.8 hours, so after 1.8 hours, half of the original amount of F-18 will remain. After 3.6 hours, a quarter of the original amount will remain, and so on.

At 3:00 PM (9 hours after the F-18 was made), the hospital will have

= 1/2^(9/1.8)

= 1/2^5

= 1/32

= approximately 0.03125 milligrams of F-18 remaining.

At midnight (18 hours after the F-18 was made), the hospital will have

= 1/2^(18/1.8)

= 1/2^10

= 1/1024

= approximately 0.0009765625 milligrams of F-18 remaining.

While using cyclotron, based on these calculations, it seems that the hospital should plan to make more F-18 the next morning, as the amount remaining at midnight is very small.

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Answer:

Since the baseball is dropped from rest (i.e., initial velocity of 0 m/s), we can use the kinematic equation that describes the relationship between distance, acceleration due to gravity, time, and final velocity:

distance = (1/2) * acceleration * time^2 + initial_velocity * time

Since the baseball starts from rest, the initial velocity is 0. We know the height of the building is 85 m, the acceleration due to gravity is 9.81 m/s^2, and we want to find the final velocity just before it hits the ground. We can use the kinematic equation to solve for time and then use time to find the final velocity:

distance = (1/2) * acceleration * time^2

85 = (1/2) * 9.81 * time^2

time^2 = 17.328

time = 4.166 s

Now we can use the kinematic equation to find the final velocity:

final_velocity = acceleration * time

final_velocity = 9.81 * 4.166

final_velocity = 40.9 m/s

Therefore, ignoring air resistance, the baseball will hit the ground with a velocity of approximately 40.9 m/s.

Since Sandi's observation is a biased one, we should be most concerned about the observer bias.

When a researcher's expectations, viewpoints, or prejudices affect what they see or record in a study, this is known as observer bias. It typically has an impact on studies when observers are aware of the research objectives or hypotheses.

Similarly in Sandi's case, she has already drawn conclusions and formed biases on MacDonald's customers. She already anticipates that they will be overweight. Thus, this will have an impact on her observations.

Therefore, in Sandi's case, observer bias should be our main concern.

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Answer:

The chemical equation for photosynthesis is 6CO2+6H2O→C6H12O6+6O2.

Explanation:

The resistance of the electric heating element can be determined using Ohm's law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage across the element is given as 232 volts and the current flowing through it is 19 amperes. The correct option is 12 ohms.

Applying Ohm's law, we calculate the resistance as:

R = V / I

R = 232 volts / 19 amperes

R ≈ 12 ohms

Therefore, the resistance of the element is approximately 12 ohms. This means that for every ampere of current flowing through the element, there is a voltage drop of 12 volts. The resistance value of 12 ohms indicates that the element has a moderate level of electrical resistance, which allows it to generate heat efficiently when current flows through it. Thus, the correct option is 12 ohms.

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(144)^2/(2x32) is the height (in feet) of the cliff? (use 32 ft/s2 for the acceleration due to gravity.)

h = height (ft)

h = (1/2)gt2 = 16t2

v = final speed = gt = 88 ft/s ⇒ t = 88/g = 88/32 s = 2.75 s

h = 16t2 = 16(2.75)2 ft = 121 ft.

An example of gravity is the force that keeps gas under the sun. The force that causes a ball thrown into the air to fall again. The power to roll downhill without stepping on the accelerator. The force with which a dropped glass hits the ground.

In general relativity, gravity is not a force between masses. Instead, gravity is the effect of space and time distortion in the presence of mass. If no force acts on an object, it will move in a straight line.

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Answer:

Yes

Explanation:

sorry if im wrong

To calculate the wavelength of radiation, we can use the formula:

wavelength = speed of light / frequency

The speed of light, denoted by "c," is approximately 3.00 x 10^8 meters per second.

Given the frequency of 5.39 x 10^14 s^(-1), we can substitute these values into the formula:

wavelength = (3.00 x 10^8 m/s) / (5.39 x 10^14 s^(-1))

Calculating this expression gives us:

wavelength ≈ 5.57 x 10^(-7) meters

Therefore, the wavelength of radiation with a frequency of 5.39 x 10^14 s^(-1) is approximately 5.57 x 10^(-7) meters.

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Answer:

A pilot plant is a small system which is operated to find out about the behavior of a process before using it on a large industrial scale.

Explanation:

Ex: Systematic ozonation tests were conducted by means of a mobile pilot plant.

F. A. Lage Filho 2010

HOPE THIS HELPS

Since W must be greater than the weight of the coal car divided by two (1260 lb), the maximum weight of the counterweight is 3360 lb. Therefore, a counterweight of at least 1260 lb is required for the loaded coal car not to overturn about the rear wheels B when a 2520-lb load is being transported.

A coal car with a load of 2520 lb will not overturn about the rear wheels B if the maximum counterweight is at least 1260 lb. Determine the maximum counterweight W for which the loaded 2520-lb coal car will not overturn about the rear wheels B. The forces acting on the coal car in the diagram below are:

T1: The tension force acting on the coal car from the cable over pulley A.

T2: The tension force acting on the counterweight from the cable over pulley C.

W: The force due to the counterweight acting downwards on the left side of the coal car (when W is at its maximum)

Fg: The gravitational force acting on the loaded coal car. Making use of the principle of moments and forces and equating the moments and forces of the system:

For moments:

Fg * L - T1 * d = 0

Where Fg = 2520 lb, L = 15 ft, d = 5 ft and T1 = 504 lb.

T1 = Fg * L / d = 2520 * 15 / 5 = 7560 lb

Forces in the system:

Vertical forces: Fv = Fg - T1 + W - T2 = 2520 - 7560 + W - T2

Horizontal forces: Fh = 0From Fh = 0,

we obtain:

T2 = W From Fv = 0,

we get:

W = T1 + Fg - T2

W = T1 + Fg - W

W = 7560 + 2520 - W3

W = 10080W = 10080 / 3W = 3360 lb

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According to the given statement the value of :

a -  \(\overrightarrow{\mathrm{A}}=\mathrm{A}_{\mathrm{x}} \hat{\mathrm{i}}+\mathrm{A}_{\mathrm{y}} \hat{\mathrm{j}}=-3.00 \hat{\mathrm{i}}+2.00 \hat{\mathrm{j}}\)

b - θ is in the second quadrant so θ = 180⁰ + (-33.7⁰) = 146⁰

c-\(\overrightarrow{\mathrm{B}}=3.00 \hat{\mathrm{i}}+6.00 \hat{\mathrm{j}}\)

In science, anything that has both a direction and a magnitude is referred to as a vector. They are typically represented by pointing arrows, the length of which denotes the size of the vector.

The component description of  A is just restated to constitute the answer to part (a):

A\(_x\) = -3.00 , A\(_y\) = 2.00

(a) \(\overrightarrow{\mathrm{A}}=\mathrm{A}_{\mathrm{x}} \hat{\mathrm{i}}+\mathrm{A}_{\mathrm{y}} \hat{\mathrm{j}}=-3.00 \hat{\mathrm{i}}+2.00 \hat{\mathrm{j}}\)

(b) \(|\overrightarrow{\mathrm{A}}|\) =  √(A\(_z\)² + A\(_y\)²) = √( (-3.00)² + (2.00)²) = 3.61

θ = tan -1 \(\left(\frac{\mathrm{A}_{\mathrm{y}}}{\mathrm{A}_{\mathrm{x}}}\right)\) = tan-1 \(\left(\frac{2.00}{-3.00}\right)\) = -33.7⁰

θ is in the second quadrant so θ = 180⁰ + (-33.7⁰) = 146⁰

(c) R\(_x\) = 0, R\(_y\) = -4.00 and \(\overrightarrow{\mathrm{R}}=\overrightarrow{\mathrm{A}}+\overrightarrow{\mathrm{B}}\)   thus \(\overrightarrow{\mathrm{B}}=\overrightarrow{\mathrm{R}}-\overrightarrow{\mathrm{A}}\)   and

B\(_x\) = R\(_x\) -A\(_x\) = 0-(-3.00) = 3.00,

B\(_y\) = R\(_y\) - A\(_y\) = -4.00-2.00= -6.00

therefore \(\overrightarrow{\mathrm{B}}=3.00 \hat{i}+6.00 \hat{j}\).

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The complete question is -

Vector  A  has a negative x component 3.00 units in length and a positive y component 2.00 units in length. (a) Determine an expression for  A in unit-vector notation. (b) Determine the magnitude and direction of  A. (c) What vector  B  when added to  A  gives a resultant vector with no x component and a negative y component 4.00 units in length.

Answer:

I believe its inference

Explanation:

Answer:

d. 10 m/s

Explanation:

Answer:

Pressure = force/area

= 650N/0.12m^2

= 5416.7 to 1 d.p

I got 650N by taking the gravitational field on earth to be 10N/kg.

Weight = mass x gravitational field

= 65 x 10N/kg

= 650

Answer is 5416.7 pascals (Pa)

Or

5308.3 Pa

if gravitational field was taken to be 9.8N/kg

Hope this helps!

The solar wind, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, is a highly ionized plasma.

The solar wind, which is a stream of charged particles (plasma) emitted by the Sun, exhibits characteristics of a highly ionized plasma. As it travels from the Sun to the Earth, the solar wind encounters variations in temperature, density, pressure, and speed. In this case, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, the solar wind can be classified as a highly ionized plasma.

During a Coronal Mass Ejection (CME), eruptive phenomena on the Sun's surface cause a sudden release of a large amount of plasma and magnetic fields into space. This disturbance leads to an increase in the temperature of the solar wind to around 10^7 K and an increase in its speed to approximately 10^3 km/s. This enhanced energy and velocity result in a significant disruption of the solar wind's flow, making it a turbulent fluid.

Turbulent fluids are characterized by chaotic and irregular motion, with strong fluctuations and mixing. The increased temperature and speed during a CME generate turbulent behavior within the solar wind, leading to the disruption and mixing of plasma particles along its trajectory.

To determine the type of fluid flow, the Reynolds number (Re) is often used. It relates the flow's characteristics, such as velocity and length, to the fluid's viscosity. In this case, since the solar wind is a plasma and has negligible viscosity, the Reynolds number is extremely high, well above the turbulent threshold of 4000. Therefore, the solar wind with increased temperature and speed due to a CME can be classified as a turbulent fluid.

In summary, the solar wind, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, is a highly ionized plasma. However, during a Coronal Mass Ejection (CME), the temperature and speed of the solar wind increase significantly, leading to turbulent fluid behavior.

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Answer: Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying. By first considering the variables and how they are related ( Step 1 ), you can make predictions that are specific and testable

Explanation:

A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used interchangeably, a scientific hypothesis is not the same as a scientific theory. A working hypothesis is a provisionally accepted hypothesis proposed for further research, in a process beginning with an educated guess or thought.

Answer: (C) H2 and N2 would react to produce more Nh3

Explanation:

A p e x

Answer: It’s most likely Mayonnaise and mustard.

Explanation: It’s definitely mayonnaise because it’s not possible to see the different substances and for mustard it depends on what type. Hope this helps. Good luck :)

Answer:

Mayonnaise and mustard.

Explanation:

Explanation:

work = Force×distance

Force in this question is equal to the weight (force of gravity)

work = 1 × 1 = 1 J

Jole is the unit of work

In terms of attitude change, the fundamental tenet of the cognitive theory would be that individuals are typically driven to lessen dissonance, which could be accomplished by altering their attitudes but also beliefs.

Cognitive theories concentrate on the premise that how exactly what people think causes the arousal of emotions, suggesting that some thoughts, as well as beliefs, as well as beliefs, contribute to healthy emotions as well as adaptive behavior while others lead to disturbing emotions and behaviors.

When people sense unease or guilt as a result of cognitive dissonance, they can actively lessen the dissonance by altering their attitude, beliefs, and even conduct in relation to it in order to attain consistency with both the contradictory cognitions.

In terms of attitude change, the fundamental tenet of the cognitive theory would be that individuals are typically driven to lessen dissonance, which could be accomplished by altering their attitudes but also beliefs.

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Energy bonds for utilities tied to Bakken shale oil are especially risky because of the volatile nature of the oil industry and because their oil is expensive to extract due to its geographic location.

The Bakken shale oil fields in North Dakota and Montana have been a major source of oil production in the United States, but the industry has seen a lot of ups and downs in recent years. This volatility can make it difficult for utilities to accurately predict their revenues and expenses, which can make it difficult to repay the bonds.

Additionally, the Bakken shale oil fields are subject to a number of environmental and regulatory risks, which can also impact the profitability of the utilities. As a result, energy bonds for utilities tied to Bakken shale oil are considered to be especially risky investments.

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Based on the information provided, we can determine that the object's acceleration is constant and equal to zero.

This is because the object is traveling the same distance in each second, indicating that its speed is constant. Acceleration is defined as the rate at which an object changes its velocity, and since the velocity of the object is not changing (it's constant), its acceleration is zero.

It's important to note that even though the object's acceleration is zero, it is still moving. This is because acceleration is only one aspect of an object's motion, and velocity and displacement are also important factors to consider. In this case, the object's displacement (total distance traveled) is 24 meters, and its velocity is constant.

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