TRUE / FALSE.
a unidirectional microphone picks up sounds equally well from all directions

Answer:

82.62%

Explanation:

The z score is a score used in statistics to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

\(z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean\ and\ \sigma=standard\ deviation.\\\\Given \ that\ \mu=12V, \sigma=0.11V.\\\\For\ x<12.15V:\\\\z=\frac{12.15-12}{0.11} =1.36\\\\For\ x>11.85V:\\\\z=\frac{11.85-12}{0.11} =-1.36\\\\\)

From the normal distribution table, P(11.85 < x < 12.15) = P(-1.36 < z < 1.36) = P(z < 1.36) - P(z < -1.36) = 0.9131-0.0869 = 0.8262 = 82.62%

Answer:

D. All the above

Explanation:

A is correct. The theory of formation of concrete is based on this phenomenon of formation of voids because, a coarse aggregate aggregate on its own, contain voids. When a fine aggregate like sand is added, it occupies these voids. Further, when finely powdered cement is added to the mixture, it further occupies the voids between the sand particles.

B is correct. The bulking of sand should be taken into account when volumetric proportioning of the aggregates is adopted. Otherwise, less quantity of concrete per bag of cement will be produced, which naturally will increase the cost of concrete. This is because sand particles when left on their own, do not pack properly near each other due to sand buckling, leaving too many void spaces between the sand particles.

C is correct . The dry sand and the sand completely flooded with water have practically the same volume. This is due to the bulking of sand. When water is added to the sand, up to complete flooding, the sand particles pack near each other and the amount of bulking of sand is decreased. The addition of the volume of water, leads to a decrease in the volume of the sand due to the extra voids. These cancels out to practically leave the dry sand and the flooded sand with the same volume.

Answer: the molecules move closer together

Explanation: This is because they are being tightly compressed

The excludable interest is just $1,000 because Arthur's modified adjusted gross income exceeds the applicable dollar limit by $5,000.

Tax can be defined as the sum that is received by an individual or an organization on its profits or other income, and it is then received by the government.

Interest on education savings bonds is tax-free up to a maximum of $6,000 per bond.

$5,000 is the excess of the modified adjusted gross income.

Arthur should not exceed the phase-out limits in terms of adjusted gross income.

As a result, since Arthur's modified adjusted gross income is $5,000 more than the applicable dollar limit, the excludable interest is $1,000.

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Answer:

multimeter

Explanation: in parallel

Answer: aerofoil type blades

Explanation: they are more difficult to make but offer better performance and higher rotational speeds making them ideal for electrical energy generation.

Answer:

4

Explanation:

The owner of a building designed by registered engineers and architects may not be able to recover damages from snow and ice if the engineers and architects had specified the use of materials or building techniques that are not designed to handle those types of conditions.

Additionally, the owner may not have taken proper preventative measures to ensure the building was properly insulated and protected from the weather, or the owner may not have maintained the building appropriately. Finally, the owner may not have been able to prove negligence on the part of the engineers or architects in the building's design or construction.

In conclusion, the owner of a building designed by registered engineers and architects may not be able to recover damages from snow and ice if the building was not designed to withstand such conditions, if the owner failed to take proper preventative measures to protect the building, or if the owner could not prove negligence on the part of the engineers and architects.

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Answer:

Then miss try to get your school to banned it for your district like forbid then from the web site then it will not allow them to use it. then sometimes use it to help other people who needs help like teachers do or we need help with something we dont know so we ask for help for a better understanding of it.

Explanation:

^-^ hope you have a good day miss or sir

Answer:

So I would love to say that you and your team at your school had banned brainly and why are you using brainly here, then you shouldn't use brainly, and brainly all students around the world gets help even you is one.

New commercial pilots are limited by flight hour requirements and strict safety regulations to ensure passenger and crew safety.

After receiving certification as a commercial pilot, there are some limitations imposed on new pilots.

One of the primary limitations is that new commercial pilots are required to complete a certain number of hours of flight time before they are allowed to fly certain types of aircraft or work for certain types of airlines. This limitation is in place to ensure that new pilots have the necessary experience to handle the complexities of different aircraft and airline operations.

Additionally, commercial pilots must adhere to strict safety regulations and guidelines to ensure the safety of passengers and crew.

Failure to comply with these regulations can result in license suspension or revocation.

Overall, while there are some limitations placed on newly certified commercial pilots, these limitations are in place to ensure safety and build experience.

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Answer:

a

Explanation:

becasue it is

As the angle of the ramp is increased, the force parallel increases. Hence, option (a) can be considered as the correct answer.

When the angle of a ramp is increased, the force parallel to the ramp, also known as the parallel component of the gravitational force, does increase. This is because the component of gravity acting parallel to the ramp increases with the angle. However, it's important to note that the total gravitational force acting on an object remains constant regardless of the angle of the ramp.As the angle of the ramp increases, the force required to push or pull an object up the ramp against gravity increases. This is due to the increase in the vertical component of the gravitational force, which opposes the motion up the ramp. The parallel force required to overcome this increased vertical force also increases.

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Answer:

fgfr

cg

Explanation:

xhrrhfdfghtrfgg

Therefore, the relative speed at the time of collision is 17.8816 mps

We will use the equation of motion:

v^2 = u^2 + 2as

s = (v^2 - u^2) / 2a

s = (0 - (25)^2) / (2a)

s = 312.5 / a

The distance the Car B travels during the 1.30 seconds when its driver is distracted and does not apply the brakes is gotten as

S = ut + (1/2)at^2

s = (17.8816 mps)(1.30 sec) + (1/2)(-5.4864 m/sec^2)(1.30 sec)^2

s = 11.645 m

The relative speed at the time of collision is:

(40 mph - 0 mph) * 1.60934 kmph * 1000 m/km / 3600 sec/hour = 17.8816 mps

Car B will only travels at 11.645 m   before hitting Car A which is clear indication that Car B will not be able to stop in time and a collision will occur.

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In a transverse wave, the distance between two adjacent crests is equal to the distance between two adjacent troughs.

What is transverse wave?

A transverse wave is a type of wave that moves perpendicular to the direction of the wave. This is in contrast to a longitudinal wave, which moves parallel to the direction of the wave.

An example of a transverse wave is a wave in a rope. When a rope is shaken from side to side, the wave travels along the rope, but the displacement of the rope is perpendicular to the direction of the wave.

Another example of a transverse wave is a light wave, which consists of oscillating electric and magnetic fields that are perpendicular to the direction of the wave's propagation.

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a. The 26th percentile of the software engineering manager salaries is approximately $111,417.

b. The 97.5th percentile of the software engineering manager salaries is approximately $171,417. The z-score for a salary of $170,000 is approximately 2.910, indicating that it is not considered an outlier based on the given standard deviation.

a. The 26th percentile can be found using the Empirical Rule. According to the Empirical Rule, in a mound-shaped and symmetric distribution, approximately 68% of the data falls within one standard deviation of the mean, 95% falls within two standard deviations, and 99.7% falls within three standard deviations. Since we know the mean base salary is $126,417 and the standard deviation is $15,000, we can calculate the value of the 26th percentile as follows:

First, calculate one standard deviation below the mean:

$126,417 - $15,000 = $111,417

Since the distribution is symmetric, the 26th percentile will be the same as the 74th percentile, which is one standard deviation below the mean. Therefore, the 26th percentile is approximately $111,417.

b. The 97.5th percentile can also be determined using the Empirical Rule. In this case, since 99.7% of the data falls within three standard deviations of the mean, we can calculate the value of the 97.5th percentile as follows:

First, calculate three standard deviations above the mean:

$126,417 + (3 * $15,000) = $171,417

Therefore, the 97.5th percentile is approximately $171,417.

c. To find the z-score for a salary of $170,000, we can use the formula:

z = (x - μ) / σ

Where x is the given salary, μ is the mean, and σ is the standard deviation. Plugging in the values:

z = ($170,000 - $126,417) / $15,000 ≈ 2.910

A z-score of 2.910 indicates that the salary of $170,000 is approximately 2.910 standard deviations above the mean. It is not considered an outlier based on the z-score alone. Typically, an outlier is defined as a data point that falls outside a certain range, often determined by a specified number of standard deviations from the mean. In this case, whether $170,000 is considered an outlier would depend on the specific criteria or threshold set for defining outliers.

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Answer:

The tax on this property is \(3750\) dollars

Explanation:

Given

Tax on per $100 is $2.50

Tax on every $1 is \(\frac{2.5}{100} = 0.025\) dollars

Tax on property of value $150,000 is

\(150,000 * 0.025 = 3750\) dollars

The tax on this property is \(3750\) dollars

To avoid becoming drowsy on an expressway, there are several steps you can take. Firstly, it is important to keep your windows closed while driving. This helps to reduce noise and distractions from outside, creating a more conducive environment for alertness. Additionally, opening the windows can create a draft that may make you feel drowsier. Secondly, engaging in conversation with a friend or passenger can help keep your mind active and focused. Talking about various topics and sharing stories can help you stay mentally engaged and prevent drowsiness. Lastly, it is advisable to take regular breaks and stop driving every couple of hours. Pulling over at a rest area or gas station allows you to stretch your legs, get some fresh air, and give your mind a break from the monotony of driving. Taking short breaks can help you stay alert and maintain your energy levels throughout the journey. Remember, ensuring your safety and the safety of others on the road is of utmost importance, so it is crucial to take proactive measures to prevent drowsiness while driving on the expressway.

One 8 ohm and one 16 ohm speaker wired (connected), in series, produce a total impedance (a/c resistance) of 24 ohms.

The measure of resistance to electrical flow is called impedance, and it is denoted by the letter Z. In ohms, it is measured. Impedance and resistance are the same in DC systems and are calculated by dividing the voltage across an element by the current (R = V/I).

An AC property of a circuit called impedance can change depending on the operating frequency Z = R - j/C + jL, where = 2f, is a typical representation of it.

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Answer:

blah blah blah sh ut up read learn

Answer:0.1

Explanation:

This prediction is based on the LWR traffic flow model and certain assumptions about the behavior of traffic.

To predict the evolution of traffic on the given road with a partial lane blockage, we can analyze the scenario step by step. Let's break it down:

1. Initial conditions:

  - Length of the road (L): 10 km

  - Free flow speed (v): 60 km/h

  - Jam density (kj): 180 vehicles/km

  - Maximum flow rate (qmax): 1500 vehicles/hour/lane

  - Traffic flowing undisturbed at 100% capacity

2. Partial lane blockage:

  - Duration of blockage (Tblockage): 2 minutes (or 4 clock ticks since each tick is 30 seconds)

  - Blockage occurs at 1/3rd distance from the end of the road

3. Impact on flow:

  - Blockage restricts flow to 50% of the maximum (qmax): qblocked = 0.5 * qmax

To predict the evolution of traffic, we can use the Lighthill-Whitham-Richards (LWR) traffic flow model. The fundamental diagram for the LWR model is:

q = v * (kj - ρ)

Where:

q is the traffic flow (vehicles/hour/lane)

v is the velocity of traffic (km/h)

kj is the jam density (vehicles/km)

ρ is the density of vehicles (vehicles/km)

4. Calculating the evolution of traffic:

  - Initially, traffic is flowing undisturbed at 100% capacity, so the density is ρ = 0.

  - As the blockage occurs, traffic experiences a reduction in flow rate.

  - Calculate the density ρ for each clock tick by rearranging the fundamental diagram equation:

    ρ = kj - (qblocked / v)

  - Update the density ρ at each clock tick based on the calculated values.

  - Continue this process for the duration of the blockage (4 clock ticks).

5. After the blockage ends:

  - Once the blockage ends after 2 minutes (or 4 clock ticks), the traffic flow gradually returns to normal conditions.

  - Calculate the density ρ and traffic flow q based on the LWR model using the original parameters.

  - Continue updating the density ρ and traffic flow q until the road reaches equilibrium.

By following these steps, you can predict the evolution of traffic on the given road with the partial lane blockage. Please note that this prediction is based on the LWR traffic flow model and certain assumptions about the behavior of traffic.

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A bend is defined as a change in the shape of the part between the damaged and undamaged area that is smooth and continuous.

What is a kink?

A kink can be defined as a sharp bend with a small radius over a short distance.

So when any part is kinked it must be replaced without any doubt. A part is kinked if it just doesn't work on the repair.

What is a bend?

Unlike a kink, a bend can be restored. That is after a bend also  a part can be bought back to its original position.

When the part is straightened, it is returned to proper shape and state without any areas of permanent deformation.

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Power delivered to the runner is approximately 2.34 MW and the hydraulic efficiency of the Pelton wheel is approximately 88%.

Step-by-step explanation:

Calculate the coefficient of bucket using the bucket deflection angle:

cos(170°/2) = cos(85°) = 0.087

coefficient of bucket = 1 - 0.087 = 0.913

Calculate the mass flow rate:

mass flow rate = density x volumetric flow rate

= 1000 kg/m3 x 1 m3/s

= 1000 kg/s

Calculate the power delivered to the runner:

Power = mass flow rate x acceleration due to gravity x head x efficiency

= 1000 kg/s x 9.81 m/s2 x 270 m x 0.98 x 0.913

= 2341596.6 W

≈ 2.34 MW

Calculate the hydraulic efficiency:

Hydraulic efficiency = power output / power input

= 2.34 MW / (1000 kg/s x 9.81 m/s2 x 270 m x 0.98)

≈ 0.88 or 88%

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The range of conversions where the CSTR and PFR reactor volumes would be identical is when the conversion is zero. This is because at zero conversion, the CSTR and PFR reactor volumes are both equal to the initial volume of the reactor.

As the conversion increases, the CSTR and PFR reactor volumes will begin to diverge, with the PFR reactor volume typically being larger than the CSTR reactor volume. Therefore, the range of conversions where the CSTR and PFR reactor volumes are identical is at zero conversion.

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Complete Question:

The cost to rent a scooter is $15.50 per hour and the cost to rent a watercraft

is $22.80 per hour. Use the expression 15.5s + 22.8w to determine how much it would cost to rent a scooter for 3 hours and a watercraft for 1 hours.

Answer:

$69.39

Explanation:

Given

15.5s + 22.8w

Required

Evaluate, when w = 1 and s = 3

To do this, we simply substitute 3 for a and 1 for w in the given expression.

15.5s + 22.8w becomes..

15.5 * 3 + 22.8 * 1

46.5 + 22.8

69.3

Hence, the cost is $69.30

Deep learning is a subset of machine learning, which is a broader field of artificial intelligence (AI) that involves creating algorithms and systems that can learn from and make predictions or decisions based on data.

Machine learning encompasses a variety of techniques and methods, including supervised, unsupervised, and reinforcement learning, which all involve training a model on input data and using that model to make predictions or decisions on new, unseen data.

Deep learning, on the other hand, is a specific type of machine learning that uses neural networks to learn from and process complex data sets. Neural networks are essentially a set of interconnected nodes that are designed to simulate the way the human brain processes information. Deep learning neural networks are able to automatically extract relevant features from data, such as images, speech, or text, and use those features to make predictions or decisions.

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Explanation Operations management is an area of management concerned with designing and controlling the process of production and redesigning business operations in the production of goods or services.[1] It involves the responsibility of ensuring that business operations are efficient in terms of using as few resources as needed and effective in meeting customer requirements.