which determines the additional water available from a hydrant? select one: a. difference between static pressure and residual pressure b. difference between friction loss and current water pressure c. difference between static pressure and atmospheric pressure d. sum of static pressure, residual pressure, and atmospheric pressure

Given data

*The given height of the building h = 56 m

*The distance from the base is d = 45 m

*The value of the acceleration due to gravity is g = 9.8 m/s^2

The formula for the time taken by the lemming is given as

Substitute the known values in the above expression as

The formula for the lemming's initial speed is given as

Substitute the known values in the above expression as

Hence, the lemming's initial speed is v = 13.3 m/s

Answer:

a

Explanation:

The material used before doubling will produce light at a frequency of 0.056 Hz.

The number of times a wave occurs repeatedly in a second is known as frequency.

The formula provides the frequency as,

\(\rm v = \lambda \times f \\\\\ \rm f = \frac{v}{\lambda} \\\\ \rm f = \frac{3 \times 10^8}{532 \times 10^-9} \\\\ \rm f = 3 \times 10^{12} \\\\ f= 0.056 \ Hz\)

Therefore, the material used before doubling will have an output light frequency of 0.056 Hz.

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The resultant displacement of the tennis ball is 8 m northward.

The displacement of an object is the change in the position of the object. The displacement of an object describes the shortest point between the final and initial position of an object.

The displacement of the tennis ball is calculated as follows;

d = (12 m north + 34 m north) - (22 m south + 16 m south)

d = (46 m north) - (38 m south)

d = 8 m northward

Thus, the resultant displacement of the tennis ball for the given motion is 8 m northward.

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The compete question is below:

A tennis ball moves 22 meters southward, then 12 meters northward, then 16 meters southward, and finally 34 meters northward. find the resultant displacement of the tennis ball.

After every movement in north and south direction multiple times, the displacement of the tennis ball is 8 meters in north direction.

The definition of displacement is the modification of an object's position. It has a direction and magnitude and is a vector quantity. It is shown as an arrow that travels from the initial location to the conclusion.

According to the question, the tennis ball moves 22 meters in south direction then it moves towards north and travels for 12 meters again it turns to south and covers 16 meters and at last it covers 34 meters in the north direction.

d = (12 m + 34 m ) north direction - (22 m + 16 m ) south direction

d = 8 meters in north direction.

Hence, the total displacement done by the tennis ball is 8 meters in the north direction.

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Answer:

Explanation:

p.E=mgh

P.E=0.124*10*11.2

p.E=13.888j

Answer:

1. He feels worse off.

2. His awareness of the grim situation.

Explanation:

Elie Weisel's memoir "Night" is about the persecution of the jews by the Germans during the worst genocide in world history. The events leading up to the Holocaust and the resulting after-effects through his personal experience provides one of the most prominent witness accounts of the crime.

When Weisel states that "lying down wasn't an option", he reveals how congested space was in the cabin. The "lucky ones" were able to breathe in the fresh air from the window, while the rest have to be satisfied with wherever they are. This reveals his realization of the grim situation inside the over-packed cabin, where there is hardly any space to move.

And when he said that they "never ate enough to satisfy our hunger", he presents the realization and understanding of the grim situation in the train's cabin where eating is not a luxury, but a necessity to stay alive. And for that, they know they have to "economize, to save for tomorrow" rather than just stay full once.  

Answer:

1. He feels worse off.

2. His awareness of the grim situation.

Explanation:

The second smallest planet in our solar system is Mars.

Mars is the answer to the question. It is the fourth planet from the Sun and is often referred to as the "Red Planet" due to its reddish appearance.

In terms of size, Mars is the second smallest planet in our solar system, with a diameter of approximately 6,779 kilometers (4,212 miles).

Mercury is the smallest planet in our solar system, but since the question asks for the second smallest planet,

Mars fits the criteria. It is larger than Mercury, Earth being the third smallest and Venus being the fourth smallest.

Mars has been a subject of fascination and exploration due to its potential for hosting life and its similarity to Earth in certain aspects.

Multiple space missions, including rovers and orbiters, have been sent to Mars to study its surface, atmosphere, and search for signs of past or present life.

Overall, Mars holds a significant place in our solar system as a neighboring planet that has captivated scientific interest and continues to be a target for future exploration.

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Answer: 10^23

Explanation:10 times 10

Answer:

An ammeter.

Explanation:

The electric current in one part of a circuit is measured with an ammeter, which gives a reading in ampere.

Answer:

The period of a wave or an oscillating system is the time it takes for the system to complete one full cycle of its motion. In physics and engineering, the period of a wave is a fundamental concept used to describe the behavior of periodic signals and systems. The period can be used to calculate other parameters of the wave, such as its frequency, wavelength, and velocity.

In this case, the oscillator completes 30 cycles in 15 seconds, meaning it completes a cycle every 15 seconds / 30 cycles = 0.5 seconds. So the period of the oscillator is 0.5 seconds. The frequency of the oscillator can then be calculated as the reciprocal of its period, which is 1 / 0.5 seconds = 2 Hz.

In conclusion, the period of an oscillator is an important parameter that describes its behavior, and it is directly related to other parameters such as frequency, wavelength, and velocity.

Answer:

false gravity is not considered matter

The time it takes the car to stop is 1.34 s.

The initial speed of the car is 77.46 ft/s

The given parameters;

acceleration of the car, a = 24 ft/s²

distance traveled by the car, s = 125 ft

The initial speed of the car is calculated as;

When the car stops, the final velocity will be zero,

\(v^2 = u^2 + 2as\\\\0 = u^2 + 2(-24\times 125)\\\\u^2 = 6000\\\\u = \sqrt{6000} \\\\u = 77.46 \ ft/s\)

The time taken for the car to stop is calculated as;

\(s = ut + \frac{1}{2} at^2\\\\125 = 77.46t + 0.5\times 24\times t^2\\\\125 = 77.46t + 12t^2\\\\12t^2 + 77.46t - 125 = 0\\\\solve \ the \ quadratic \ equation \ using \ formula \ method;\\\\a = 12, \ b = 77.46, \ c = - 125\\\\t = \frac{-b \ \ +/- \ \ \sqrt{b^2 - 4ac} }{2a} \\\\t = \frac{-77.46 \ \ +/- \ \ \sqrt{(77.46)^2 - 4(12\times -125)} }{2(12)}\\\\t = 1.34 \ s\)

Thus, the time it takes the car to stop is 1.34 s.

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The percentage of the lost kinetic energy of the car, at the midpoint of the skid, is 50%.

In physics, work is the measurement of the energy used to move objects. When you are walking, you're using energy to move your body so the work done would be greater than zero.

According to work-energy theorem, work is equal to force times displacement (W = F · x).

A type of energy is kinetic energy, which is the energy of a moving object. If an object is at rest, its kinetic energy is zero. Kinetic energy is equal to one half of a mass times velocity squared (KE = 0.5 · m · v²).

When a car goes into a skid and comes to a gradual stop, at the midpoint of the skid the car has spend 50% its kinetic energy. This is simply because the velocity of the car at the midpoint of the skid is half the velocity of the car when the car starts going into a skid, assuming constant acceleration.

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In thermodynamic equilibrium, the different forms of energy in a system, including vibrational energy, must be in balance. Therefore, if nitrogen is in thermodynamic equilibrium, its vibrational energy will be in balance with its other forms of energy.

The vibrational temperature of a gas is related to the average vibrational energy of its molecules. In the case of nitrogen, which is a diatomic gas, its molecules have multiple modes of vibration, including stretching and bending vibrations. The vibrational temperature of nitrogen can be calculated from the Boltzmann distribution, which relates the temperature of the gas to the relative populations of its energy states.

The vibrational temperature of nitrogen at room temperature is around 335 K. This is significantly higher than its translational temperature, which is around 300 K. The reason for this is that the vibrational energy of nitrogen molecules is not the same as their translational energy. While translational energy is associated with the motion of the molecule as a whole, vibrational energy is associated with the internal motion of the atoms within the molecule.

The vibrational temperature of a gas is not necessarily the same as its translational temperature, because the two forms of energy are not directly related. In a gas that is not in thermal equilibrium, the vibrational and translational temperatures can be different. However, in a gas that is in thermodynamic equilibrium, the different forms of energy will be in balance, and the vibrational temperature will be related to the translational temperature through the equipartition theorem.

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Answer:

69.8 m  (nearest tenth)

Explanation:

Constant Acceleration Equations (SUVAT)

\(\boxed{\begin{array}{c}\begin{aligned}v&=u+at\\\\s&=ut+\dfrac{1}{2}at^2\\\\ s&=\left(\dfrac{u+v}{2}\right)t\\\\v^2&=u^2+2as\\\\s&=vt-\dfrac{1}{2}at^2\end{aligned}\end{array}} \quad \boxed{\begin{minipage}{4.6 cm}$s$ = displacement in m\\\\$u$ = initial velocity in ms$^{-1}$\\\\$v$ = final velocity in ms$^{-1}$\\\\$a$ = acceleration in ms$^{-2}$\\\\$t$ = time in s (seconds)\end{minipage}}\)

When using SUVAT, assume the object is modeled as a particle and that acceleration is constant.

Consider the horizontal and vertical motion of the projectile separately.

As the projectile is fired horizontally, the vertical component of its initial velocity is zero.

Acceleration due to gravity = 9.8 ms⁻²

Resolving vertically, taking ↓ as positive:

\(s=10.5 \quad u=0 \quad a=9.8\)

\(\begin{aligned}\textsf{Using} \quad s&=ut+\dfrac{1}{2}at^2:\\\\10.5&=(0)t+\dfrac{1}{2}(9.8)t^2\\10.5&=4.9t^2\\t^2&=\dfrac{15}{7}\\t&=\sqrt{\dfrac{15}{7}}\end{aligned}\)

The horizontal component of velocity is constant, as there is no acceleration horizontally.

Resolving horizontally, using the value of t found previously:

\(u=47.7 \quad v=47.7 \quad a=0 \quad t=\sqrt{\dfrac{15}{7}}\)

\(\begin{aligned}\textsf{Using} \quad s&=ut+\dfrac{1}{2}at^2:\\\\s&=47.7\left(\sqrt{\dfrac{15}{7}}\right)+\dfrac{1}{2}(0)\left(\sqrt{\dfrac{15}{7}}\right)^2\\s&=47.7\left(\sqrt{\dfrac{15}{7}}\right)\\s&=69.82565022...\end{aligned}\)

Therefore, the cannonball lands 69.8 m from the base of the wall.

Kieran had a greater average speed than Jevon. Let us go into more detail in the explanation below. To compare the average speeds of Kieran and Jevon, we need to find out the speed of each person.

We can use the formula speed = distance/time. Kieran ran 8 laps in 18 minutes, which means he ran 8/18 = 0.44 laps per minute. To find out Kieran's speed, we need to multiply this by the length of one lap. If we assume that the length of one lap is 400 meters, then Kieran's speed is:0.44 laps per minute × 400 meters per lap = 176 meters per minute Jevon ran 6 laps of the track, but we don't know how long it took him.

Therefore, we can't calculate his speed directly. However, we can still compare his speed to Kieran's by using ratios. If we assume that Jevon ran the same length of track as Kieran, then we can write the following equation: Kieran's speed/Jevon's speed = Jevon's time/Kieran's time.

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There are two major types of problem-solving reflective and creative.

The process is used to help students think about a problem without applying their own preconceived ideas. Defining what the problem looks like is separated from looking at the cause of the problem to prevent premature judgment.

Reflective Problem Solving follows a series of tasks. Once you have broken the students into groups, the students define the problem, analyze the problem, establish the criteria for evaluating solutions, propose solutions and take action.

Creative Problem Solving uses the same basic focus, but the process is less geared toward solutions and more towards a focus on brainstorming. The focus is on creating ideas rather than solving a clear existing problem.

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Answer:

A

Explanation:

Constant speed (without change in direction) is not accelerating. If you are slowing down, speeding up, or changing direction, you are accelerating

The most recent view of the atom is the quantum mechanical model of the atom.

We know that the atom is smallest part of the substances that can take part ion a chemical reaction.

An atomic model is a theoretical construct that explains the properties and behavior of atoms, the basic building blocks of matter. The most widely accepted atomic model is the quantum mechanical model, which describes atoms as consisting of a nucleus of protons and neutrons, surrounded by a cloud of electrons.

The electrons occupy energy levels or orbitals, and their behavior is described by the principles of quantum mechanics. The earliest atomic model was proposed by John Dalton in the early 19th century, which was a classical mechanical model.

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The time elapses until it splashes into the water is  1.889 s and horizontal distance is 236.227 m/s

Speed V =  125m/s

height h = 17.5 m

time elapse t = \(\sqrt{2h/g}\) = 1.889 s

horizontal distance = vt = 236.227 m/s

As you go closer to Earth, time slows down because, as Einstein proposed in his theory of general relativity, the gravity of a massive object like Earth warps space and time.

On a cosmic scale, such as when a star is passing by a black hole, scientists first noticed this "time dilation" phenomenon. Then, in 2010, researchers used two incredibly accurate atomic clocks, one positioned 33 cm higher than the other, to see the same phenomenon on a much smaller scale. Time passed more slowly for the clock that was located closer to Earth.

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The mechanical advantage of a pulley is the ratio of the output force to the input force.

For example, if a pulley is used to lift a weight of 100 pounds, and the input force is 10 pounds, then the mechanical advantage is 10:1 (100/10).

This means that for every 10 pounds of input force, the pulley can lift 100 pounds of weight. The mechanical advantage of a pulley is determined by the number of strands of rope that are used in the pulley system. The more strands of rope, the higher the mechanical advantage will be.

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Answer:

In the same way that velocity is the rate of change of displacement, acceleration is the rate of change of velocity. In other words, whenever a car increases its velocity, it is said to be accelerating and whenever it is slowing down, it is said to be decelerating.

Acceleration is a measure of how quickly the velocity of an object changes. So, the acceleration is the change in the velocity, divided by the time. ... The units for acceleration are meters per second squared (m/s2).

The water outflow in 30 secs through 200 mm of the capillary tube is mathematically given as

\(Qo=1.6 \times 10^{2} \mathrm{~mL}\)

\(\begin{aligned}\Delta P &=6660 \mathrm{~m} / \mathrm{m}^{2} \\\mu &=8.01 \times 10^{-4} \text { Pas } \\t &=30 \mathrm{~s} \\L &=200 \mathrm{~mm}=200 \times 10^{-3} \mathrm{~m} \\D &=1.5 \mathrm{~mm}=1.5 \times 10^{-3} \mathrm{~m} \Rightarrow \gamma=\frac{1.5 \times 10^{-3}}{2} \mathrm{~m}\end{aligned}\)

Generally, the equation for Rate of flow of Liquid is  mathematically given as

\(\\$$Q=\frac{\pi r^{4} \times \Delta P}{8 \mu L}\)

$$

Where dP is pressure difference r is the radius

\(\mu\) is the viscosity of water

L is the length of the pipe

\(Q=\frac{\pi \times\left(\frac{1.5 \times 10^{-3}}{2}\right)^{4} \times 6660}{8 \times 8.01 \times 10^{-4} \times 200 \times 10^{-3}}\)

\(Q=5.2 \mathrm{~mL} / \mathrm{s}\)

In $30s the quantity that flows out of the tube

\(&Qo=5.2 \times 30 \\&Qo=1.6 \times 10^{2} \mathrm{~mL}\)

In conclusion, the quantity that flows out of the tube

\(Qo=1.6 \times 10^{2} \mathrm{~mL}\)

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Answer:    

   1. The death penalty should be abolished.

   2. Human cloning should be legalized.

   3. All drugs should be legalized.

   4. Animal testing should be banned.

   5. Juveniles should be tried and treated as adults.

   6. Climate change is the greatest threat facing humanity today.

   7.  Is There Life After Death?

   8. Is Evolution or Creationism the Truth?

Explanation:

Answer:

it distroy our property house,buildings

Answer:

The temperature  change in the calorimeter will be lower

Explanation:

Water is an example of a molecular substance. They have relatively low melting points and boiling points usually below 300° C . Water reacts with metals to a degree varying with their position in the electrochemical series.

The specific heat of water is 4179.6 Joules which is relatively high . This typically implies that water absorbs a larger amount of heat but the increase in temperature of its boiling points is relatively low. Thus; in the 200-mm test tube that contains water and was subsequently added to the calorimeter , the heat present was initially absorbed by the water and that does not result to an increase in the temperature change in the calorimeter. Thus the temperature change in the calorimeter will be lower.

Porter's Five Forces is a framework used to analyze the competitive intensity and attractiveness of an industry. The five forces are: Threat of New Entrants, Bargaining Power of Suppliers, Bargaining Power of Buyers, Threat of Substitute Products or Services and Intensity of Competitive Rivalry.

Threat of New Entrants: This force considers the ease or difficulty for new competitors to enter an industry. It includes barriers to entry such as high capital requirements, economies of scale, brand loyalty, and government regulations.

Example: The airline industry is known for its high barriers to entry due to the significant capital required to purchase aircraft, establish routes, and secure necessary licenses and permits. Additionally, established airlines often have loyal customer bases and strong brand recognition, making it challenging for new entrants to compete effectively.

Bargaining Power of Suppliers: This force assesses the power suppliers have over the industry in terms of pricing, quality, and availability of inputs. It considers factors such as the concentration of suppliers, uniqueness of their products, and their ability to forward integrate.

Example: In the smartphone industry, major suppliers of components like microchips and display screens hold significant bargaining power. These suppliers provide essential inputs, and their products may have limited alternatives or require specialized manufacturing processes. As a result, smartphone manufacturers must negotiate favorable terms with these suppliers to ensure a reliable supply chain and competitive pricing.

Bargaining Power of Buyers: This force examines the power customers have in influencing prices, demanding better quality or service, and potentially switching to alternative products or suppliers. It considers factors such as buyer concentration, product differentiation, and switching costs.

Example: The retail industry experiences strong buyer power, particularly in highly competitive markets. Customers have access to various options, and their ability to compare prices and products easily through online platforms empowers them to demand competitive pricing, promotions, and high-quality products and services.

Threat of Substitute Products or Services: This force looks at the availability of alternative products or services that can satisfy customer needs. It considers factors such as price-performance trade-offs, switching costs, and customer loyalty.

Example: The rise of streaming services such as Netflix, Amazon Prime Video, and Hulu posed a significant threat to traditional cable and satellite TV providers. These streaming platforms offer a wide range of content at competitive prices, allowing customers to switch from traditional TV services to streaming options, resulting in a decline in subscriber numbers for traditional providers.

Intensity of Competitive Rivalry: This force evaluates the level of competition among existing firms in the industry. It considers factors such as the number and size of competitors, industry growth rate, product differentiation, and exit barriers.

Example: The soft drink industry, dominated by major players like Coca-Cola and PepsiCo, experiences intense competitive rivalry. These companies fiercely compete for market share through advertising campaigns, new product launches, pricing strategies, and distribution channels. The rivalry is further intensified by the high market saturation and the limited scope for differentiation among similar products.

The interconnection of these forces lies in their collective influence on the competitive dynamics and profitability of an industry. Changes in one force can trigger a chain reaction that impacts the others. For instance, a high threat of new entrants may lead to increased competitive rivalry as existing firms strive to defend their market share. Similarly, a strong bargaining power of buyers can limit the pricing power of suppliers and impact their profitability. Understanding these interconnections helps businesses assess the overall attractiveness and competitive landscape of an industry and develop appropriate strategies to thrive within it.

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