_______concentration is high inside of neurons at rest

The standard normal curve, Z, is a bell-shaped distribution with a mean of 0 and a standard deviation of 1.

Therefore, statement a) is false as the standard deviation of Z is o=1, not 0. Statement b) is also false as the mean of Z is u=0, not 1. Statement c) is true as the Z curve is symmetric about zero, meaning that the area to the left of zero is equal to the area to the right of zero. This symmetry is a result of the mean being at zero and the standard deviation being equal in both directions.

standard normal curve, Z, is a fundamental concept in statistics and is used in a variety of applications, including hypothesis testing, confidence intervals, and determining probabilities. Understanding the properties of the standard normal curve is essential for conducting statistical analysis and drawing valid conclusions from data.

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Answer:

Explanation:

The acceleration of an object given it's velocity and time taken can be found by using the formula

\(a = \frac{v}{t} \\ \)

where

a is the acceleration

v is the velocity

t is the time

From the question

v = 27 m/s

t = 8 s

We have

\(a = \frac{27}{8} \\ = 3.375\)

We have the final answer as

Hope this helps you

Distance can be defined as the amount of ground covered (traveled) by a physical object over a specific period of time and speed, regardless of its direction, starting point or ending point.

Mathematically, the distance traveled by a physical object can be calculated by using this formula:

Distance = speed × time

Dimitri's total distance is the sum of the distance he covered by moving from point A to B and then from B to C. Thus, his total distance is given by:

Total distance = AB + BC

Total distance = 18.1 + 13.3

Total distance = 31.4 feet.

The magnitude of Dimitri's displacement would be calculated by finding the difference in the position of the two point-to-point distances as follows:

Displacement = AB - BC

Displacement = 18.1 - 13.3

Displacement = 4.8 feet.

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Answer:

\(a=2\ m/s^2\)

Explanation:

Given that,

Initial velocity, u = 44 m/s

Final velocity, v = 66 m/s

Time, t = 11 s

Acceleration = rate of change of velocity

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{66-44}{11}\\\\a=2\ m/s^2\)

So, the acceleration of the car is \(2\ m/s^2\).

Answer: the answer is c (think bc im on that too)

Explanation:

The interference is a  type of wave interaction shown in the photo. Option A is correct.

The result of two or more wave trains flowing in opposite directions on a crossing or coinciding pathways. This phenomenon is known as the interference of waves.

The effect is the sum of the individual wave amplitudes at each site where more than one wave is present.

When two wave pulses are traveling along a string toward each other. They meet and the phenomenon is occur known as interference.

The interference is a  type of wave interaction shown in the photo

Hence option A is correct.

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Answer: Volume=0.030/0.75

Explanation:

Density= mass/volume ∆density= mass/volume

(1.29- 0.54)= 0.030/volume

0.75 volume= 0.030 Volume=0.030/0.75

The speed of the ball when it left his foot is 11.13 m/s.

A projectile is an object that is launched or projected into the air and is only subject to the acceleration of gravity. Projectile and trajectory both refer to the same thing: an object.

The given parameters;

distance of the goal, d = 26 m

angle of projection of the ball, =  26°

height of the cross bar, H = 2.4 m

The speed of the projectile will be calculated by applying the formula for maximum height reached by a projectile;

\(H=U^{2} sin^{2}/2g\)

\(u^{2} =2gh/x=sin^{2}\)

\(u^{2} =2*9.8*2.4/sin^{2} 26\)

\(u^{2} =81.10\) m/s

u=9 m/s

Thus, the speed of the ball when it left his foot is 9 m/s.

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Answer:

D

Explanation:

their octet is complete they don't react with any thing

Argon and krypton have similar properties, and they have a complete octet, which means that they do not react with anyone. Hence, option D is correct.

The phrase "inert gas" is a bit misleading because, in some circumstances, these gases can really be reactive. As a result, these gases are typically referred to as noble gases in the context of chemistry and materials science.

The term "noble" has historically been used in chemistry (and earlier in alchemy) to characterize the resistance of some metals to chemical reaction, and the term "noble gas" denotes the same resistance.

These are the inert gases which are mentioned in the periodic table.

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The fluid's specific gravity and volume are 2.57 and 74.8 ft3, respectively.  The fluid specific weight in unit of lbf/ft3. round to the nearest one decimal place is 159.6 lbf/ft3

The fluid's specific weight can be calculated as follows:

specific weight = specific gravity . density of water

Where,

specific gravity = 2.57

density of water = 62.4 lbf/ft3,

So, specific weight = 2.57 . 62.4 = 159.648 lbf/ft3

Rounding to the nearest one decimal place, the specific weight of the fluid is 159.6 lbf/ft3.

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The gravitational force between the two spheres of mass 1 kg will be 1.6675 × 10⁻¹¹ Newtons.

The gravitational force could be described as a force of attraction or the attractive force which attracts all the physical forms which are having some mass. Gravitational force is by far the weakest recognized natural force on this planet.

F = Gm₁m₂/ r²

F = Gravitational force,

G = Gravitational constant,

m₁ and m₂ are the masses of the two objects,

r is the distance between the two objects.

F = Gm₁m₂/ r²

F = 6.67 × 10⁻¹¹ × 1 × 1/ (2)²

F = 6.67 × 10⁻¹¹/ 4

F = 1.6675 × 10⁻¹¹ N

Therefore, the gravitational force will be 1.6675 × 10⁻¹¹ Newtons.

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The values of all sub-parts have been obtained.

(1).  The maximum factored load the beam can withstand is 45.2 kN/m.

(2).  The moment resistance of the cross-section is 291735.65 Nm.

(3).  The factored moment demand is 27939.6 Nm

1) To draw the governing shear and bending moment diagram for the factored load, we need to first calculate the maximum factored load that the beam can withstand.

The maximum factored load on the beam is given by:

Dead Load = 20 kN/m + 15 kN

                   = 35 kN/m.

Live Load = 2 kN/m + 1 kN

                = 3 kN/m.

Total Factored Load = 1.2 x Dead Load + 1.6 x Live Load

                                  = 1.2 x 35 kN/m + 1.6 x 3 kN/m

                                  = 45.2 kN/m.

The maximum factored load the beam can withstand is 45.2 kN/m.

The shear force and bending moment diagrams for the given factored load can be obtained as shown below:

Shear Force Diagram:

Bending Moment Diagram:

2) To calculate the moment resistance of the cross-section, we can use the formula:

MR = σst A'(d - a/2) + 0.85f'c A''(d - a/2)

Where, σst = yield stress of tension steel [σst = fy / γst],

γst = safety factor for tension steel [γst = 1.15A']

A' = area of tension steel, [A'' = b(d - a)].

Where,

b = width of the beam [b = 600 mm],  

d = total height of the beam [d= 1000 mm],

a = effective depth of tension steel [a = 920 mm]

f'c = compressive strength of concrete [f'c = 25 MPa],

MR = σst A'(d - a/2) + 0.85f'c A''(d - a/2)

MR = (400 / 1.15) x 10 x (1000 - 920/2) + 0.85 x 25 x 590 x (1000 - 920/2)

MR = 291735.65 Nm

The moment resistance of the cross-section is 291735.65 Nm.

3) To check if this cross-section is adequately designed to resist the factored bending moment (LRFD), we need to calculate the factored moment demand and compare it with the moment resistance.

The factored moment demand is given by:

MF = ϕ x Mu

Where,ϕ = resistance factor = 0.9, Mu = factored bending moment

Mu = 1.2 x Dead Load x L2 / 8 + 1.6 x Live Load x L2 / 8 + 1.2 x (Dead Load + Live Load) x L2 / 2

   = 1.2 x 35 x 152 / 8 + 1.6 x 3 x 152 / 8 + 1.2 x 38 x 152 / 2

   = 31044 Nm

MF = ϕ x Mu

     = 0.9 x 31044

    = 27939.6 Nm

The factored moment demand is 27939.6 Nm, which is less than the moment resistance of the cross-section, i.e., 291735.65 Nm.

Therefore, this cross-section is adequately designed to resist the factored bending moment.

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The collection of light rays that interact with objects in the world in front of a viewer is Optic array.

What is optic array?

Thus, Option D is the correct answer.

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Hot Jupiters are a type of exoplanet that are large gas giants similar in size to Jupiter but are located much closer to their host stars, with orbital periods of only a few days. It is believed that these planets did not form in their current close-in location but instead migrated inwards from where they originally formed.

One possible explanation for their migration is a process called disk migration. This occurs when a planet interacts with the gas and dust in the protoplanetary disk it formed from, causing it to spiral inwards towards its host star. Another possibility is planet-planet scattering, where interactions between planets in a system cause one or more planets to be ejected from their original orbit and move closer to their host star.

In addition, gravitational interactions with other planets or nearby stars can also cause a planet's orbit to become more eccentric, leading to the planet passing closer to its host star at periastron.

Overall, there are several potential mechanisms for hot Jupiters to have migrated so close to their host stars, and ongoing research continues to shed light on this fascinating phenomenon.

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The attraction or repulsion that occurs when magnets are held close to each other is caused by magnetic fields.

When a magnet is brought close to another magnet, the magnetic field of the first magnet interacts with the magnetic field of the second magnet. These magnetic fields are created by the motion of electric charges within the magnets, such as the motion of electrons in the atoms that make up the material of the magnets.

The magnetic fields can either reinforce or cancel each other out, depending on their orientation and strength, which leads to the attraction or repulsion between the two magnets.

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Ami's percent error is C. 06.04%. Percent error is a measure of the accuracy of a measurement or experimental result compared to the accepted or true value.

To calculate the percent error, we use the formula:

Percent Error = (|Experimental Value - Accepted Value| / Accepted Value) * 100

In this case, the experimental value is 100°C and the accepted value is 94.3°C. Plugging in the values, we get:

Percent Error = (|100 - 94.3| / 94.3) * 100

Percent Error = (5.7 / 94.3) * 100

Percent Error ≈ 6.04%

Therefore, the correct answer is C. 06.04%.

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The difference between stretching a t-shirt and stretching a rubber band is that the rubber band will return to its original size and shape, but the t-shirt won't. Thus, the correct option for this question is A.

Elasticity may be characterized as a type of physical property of an object that determines the ability of an elastic material to regain its original size and shape after it is deformed. Due to this, the rubber band will return to its normal size and shape.

Inelastic material does have the ability to regain its original size and shape after it is deformed. Due to this, the t-shirt won't return to its normal size and shape.

Thus, the correct option for this question is A.

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For an abdominal X-ray imaging setup, you should choose a compensation filter that accounts for variations in body thickness and tissue density. Filter B is the most suitable choice.

Compensation filters, or spatial filters, are used in X-ray imaging to ensure uniform intensity across the image by compensating for variations in body thickness and tissue density. In the given setup with an X-ray source, filter, body cross-section, and detector, the ideal filter would be Filter B. This filter has a shape that compensates for the irregularities in the abdominal region, taking into account the thicker tissues around the spine and the thinner tissues in the surrounding areas.

By choosing Filter B, you will achieve a more uniform intensity distribution in the X-ray image, resulting in better image quality and more accurate diagnostic information.

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Answer:

1. True.

2. False.

3. True.

Explanation:

A. True: An object has acceleration if its velocity is changing. In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

B. False: Force is measured in joules. Force is a product of the mass of an object and its rate of acceleration. Thus, force is actually measured in Newton.

C. Gravity is a force. Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

At the time and location where the gauge pressure due to the sound wave is a maximum, the displacement of the air molecules is zero or very close to zero, indicating that they are at their equilibrium positions.

If the gauge pressure due to the sound wave is at a maximum at a particular time and location, it indicates that the air molecules at that same time and place are at their equilibrium positions.

In a sound wave, regions of maximum pressure correspond to compressions, where the air molecules are pushed closer together, and regions of minimum pressure correspond to rarefactions, where the air molecules are spread apart.

At the maximum pressure point, the air molecules have been compressed to their maximum extent, and they are in their equilibrium positions before they start to move back towards their rest positions.

Therefore, at the time and location where the gauge pressure due to the sound wave is a maximum, the displacement of the air molecules is zero or very close to zero, indicating that they are at their equilibrium positions.

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The amount of water vapor needed to saturate the air at 95°F is approximately 0.0127 g/kgO.

The amount of water vapor needed to saturate the air depends on the air temperature and pressure. At a given temperature, there is a limit to the amount of water vapor that the air can hold, which is called the saturation point. If the air already contains some water vapor, we can calculate the relative humidity (RH) as the ratio of the actual water vapor pressure to the saturation water vapor pressure at that temperature.

Assuming standard atmospheric pressure, we can use the following table to find the saturation water vapor pressure at 95°F:

| Temperature (°F) | Saturation water vapor pressure (kPa) |

|------------------|--------------------------------------|

| 80               | 0.38                                 |

| 85               | 0.57                                 |

| 90               | 0.85                                 |

| 95               | 1.27                                 |

| 100              | 1.87                                 |

We can see that at 95°F, the saturation water vapor pressure is 1.27 kPa. To convert this to g/kgO, we can use the following conversion factor:

1 kPa = 10 g/m2O

Therefore, the saturation water vapor density at 95°F is:

1.27 kPa x 10 g/m2O = 12.7 g/m2O

To convert this to g/kgO, we need to divide by 1000, which gives:

12.7 g/m2O / 1000 = 0.0127 g/kgO

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Answer:

The correct option is;

d.) He taught Aristotle and started the Academy, a center or learning in ancient Athens

Explanation:

Plato is one of he world's most studied philosophers. He is from Athens and was a student of Socrates in the 5th century BCE. He is the founder of the first institution of higher learning equivalent to a university in the Western world and was a teacher to Aristotle who is considered the first authentic scientist in history and the inventor of logic

Plato was the writer of several philosophical works including the Republic.

The wavelength of the most intense radiation will decrease.

What is wavelength ?

The distance between two successive crests or troughs of a wave is known as its wavelength. It is calculated using the wave's direction.

The temperature of a blackbody radiator is increased.

Most intense wavelength of light emitted as this increase occurs the wavelength of the most intense radiation will decrease

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Answer:

F=mass×acceleration

Acceleration=force÷mass

6.2/2=3.1

The resulting acceleration is 3.1 m/s2

Answer:

Explanation:

We know the relation :

We can rearrange so it is equal to acceleration :

Here :

Substituting the values in our rearranged equation :

Therefore, the resulting acceleration of the object will be 3.1 m/s²

Answer:

Wave a is louder than wave b!!!

Explanation:

Yes

The power delivered to the headlight is 460.8 Watts.

Power is the ability to influence others and to control resources, people and situations. It is a central concept in politics, economics and social studies, and is often defined as the ability to determine the behaviour of others.

The total energy delivered by the battery over the 8-hour discharge period can be calculated as follows:
Energy = Power x Time
Energy = 460.8 Watt-hours
To calculate the power delivered to the headlight, we first need to know the current being drawn by the headlight. Assuming that the headlight is a 12V bulb, the current can be calculated as follows:
Power = Voltage x Current
460.8 = 12V x Current
Current = 38.4 Amps
Therefore, the power delivered to the headlight is 12V x 38.4A = 460.8 Watts.

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Answer:

The energy an object has due to its motion is called kinetic energy

Explanation:

Factors Affecting Kinetic Energy: the kinetic energy of an object depends on both its speed and its mass.

Answer:

kinetic energy

Explanation:

In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

Answer:

The horse's final speed is 8.31 m/s

Explanation:

Motion With Constant Acceleration

It's a type of motion in which the velocity of an object changes uniformly in time.

The equation that describes the change of velocities is:

\(v_f=v_o+at\qquad\qquad [1]\)

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

The distance traveled by the object is calculated as follows:

\(\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]\)

Solving [1] for t and substituting into [2] we get the following equation:

\(V_f^2=V_o^2+2aX\)

Now we use the data provided by the question. The horse starts at vo=3 m/s and then accelerates at \(a=2 m/s^2\) for a distance of x=15 m. The final speed is:

\(V_f^2=3^2+2(2)(15)\)

\(V_f^2=9+60=69\)

\(V_f=\sqrt{69}\)

\(V_f=8.31\ m/s\)

The horse's final speed is 8.31 m/s

The given statement "It is important to keep an eye on the volume a projectile occupies inside the barrel and not wholly fixate upon the projectile's weight" is true because the volume a projectile occupies within the barrel directly affects the projectile's fit and accuracy.

A projectile that is too small in volume may not create a proper seal within the barrel, resulting in a loss of pressure and reduced accuracy. On the other hand, a projectile with too large a volume may cause increased friction, leading to higher pressures and potential damage to the barrel.

The weight of a projectile is also important but focusing solely on it can lead to overlooking other crucial factors. The weight affects the projectile's ballistic performance, including its range and impact force. However, considering only the weight might result in an unbalanced projectile, which could negatively affect its flight path and accuracy.

To achieve the best results, it is essential to find a balance between the projectile's weight and volume. Both factors should be taken into account when designing and selecting projectiles to ensure optimal performance and accuracy.

In summary, while the weight of a projectile is important, it is also essential to consider the volume it occupies inside the barrel. By considering both factors, you can achieve better accuracy and overall performance of the projectile in your application.

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Complete Question:

It is important to keep an eye on the volume a projectile occupies inside the barrel and not wholly fixate upon the projectile’s weight. True or False.