If the magnitude of one of the charges doubles while the magnitude of the other charge and the distance between the charges remain the same, then the electric force between the charges will also double.
This is because the electric force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Therefore, if the magnitude of one charge doubles, the product of the charges doubles, and the electric force between them also doubles. However, if the distance between the charges remains the same, the square of the distance does not change, so the force is not affected by it. In summary, the electric force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
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the chemical that makes up genetic material
The chemical that makes up genetic material is called nucleic acid. Specifically, DNA deoxyribonucleic acid and RNA ribonucleic acid are the two types of nucleic acids that store and transmit genetic information in living organisms.
What are acids ?Acids are substances that have a pH less than 7 and can donate a hydrogen ion (H+) to a solution. They are characterized by their sour taste and their ability to dissolve metals, react with bases, and change the color of indicators. Acids can be categorized as strong or weak based on their ability to ionize in water. Strong acids ionize completely in water, while weak acids only partially ionize.
What is an ionize ?Ionization refers to the process of converting a neutral atom or molecule into an ion by adding or removing one or more electrons. This can occur through a variety of methods, such as heating, chemical reactions, or exposure to radiation. When an atom loses one or more electrons, it becomes positively charged and is called a cation.
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Question 65
The major controversy associated with injury as the result of microwave exposure deals with:
a. Leukemia
b. High levels of microwave absorption
c. Prolonged low levels of exposure
d. Development of cataracts
The major controversy associated with injury as the result of microwave exposure deals with c. Prolonged low levels of exposure. This has been a topic of debate as it is uncertain whether long-term exposure to low levels of microwaves may have adverse health effects.
The major controversy associated with injury as the result of microwave exposure deals with all of the given options, but specifically, the debate revolves around whether prolonged low levels of exposure to microwaves can cause adverse health effects such as leukemia, high levels of microwave absorption leading to tissue damage, the development of cataracts, and other health problems. While some studies suggest that microwave exposure at high levels can cause harm, the evidence regarding the long-term health effects of low-level microwave exposure is still inconclusive and requires further research.
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A bungee jumper dives from a bridge. At a point near the bottom of his dive, the forces acting on him are:gravity: 700 N downwardsspring force: 850 N upwardsair resistance: 60 N upwardsShowing your working, calculate:the net force (strength and direction) acting on himhis acceleration, given that his mass is 70 kg
A bungee jumper dives from a bridge. At a point near the bottom of his dive, the forces acting on him are:gravity: 700 N downwardsspring force: 850 N upwardsair resistance: 60 N upwardsShowing your working,The acceleration of the bungee jumper is 3 m/s^2 downwards.
To calculate the net force, we need to add up all the forces acting on the bungee jumper. In this case, the gravitational force is acting downwards with a magnitude of 700 N, the spring force is acting upwards with a magnitude of 850 N, and the air resistance is also acting upwards with a magnitude of 60 N.
Therefore, the net force acting on the bungee jumper can be calculated as follows:
Net force = spring force + air resistance - gravitational force
Net force = 850 N + 60 N - 700 N
Net force = 210 N upwards
Therefore, the net force acting on the bungee jumper is 210 N upwards.
To calculate the acceleration of the bungee jumper, we can use Newton's second law of motion, which states that the net force acting on an object is equal to its mass multiplied by its acceleration.
Net force = mass x acceleration
Substituting the values, we get:
210 N = 70 kg x acceleration
Solving for acceleration, we get:
Acceleration = 210 N / 70 kg
Acceleration = 3 m/s^2 downwards
Therefore, the acceleration of the bungee jumper is 3 m/s^2 downwards.
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Question 5 Marks: 1 In the rectangular furnace, the grates are arranged inChoose one answer. a. arches b. rectangles c. tiers d. circles
In a rectangular furnace, the grates are typically arranged in rectangular shapes. Grates are horizontal bars or grids that are used in a furnace for supporting the fuel, such as wood, coal, or other combustible materials, during combustion.
Grates are arranged in a rectangular pattern to provide structural support and allow for efficient burning of the fuel. The rectangular arrangement of grates allows for even distribution of heat and combustion air, facilitating the combustion process in the furnace. Grates in a furnace serve multiple purposes. They support the fuel, such as wood or coal, allowing it to burn evenly and efficiently. They also provide spaces or gaps between the bars, which allow for the passage of air, oxygen, and combustion gases. This helps to regulate the airflow and maintain proper combustion conditions within the furnace.
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Question 25
Which one of the following will perhaps the most dramatic consequence of global warming?
a. loss of biodiversity
b. human illness
c. rising sea level
d. diminishing crop yields
The most dramatic consequence of global warming is likely to be the rising sea level, as it could lead to displacement of populations, loss of land, and damage to infrastructure.
However, it is important to note that all of the options listed (loss of biodiversity, human illness, rising sea level, and diminishing crop yields) are potential consequences of global warming and all have serious impacts. In addition to land loss, rising sea levels will also lead to increased flooding, more intense storm surges, and saltwater intrusion into freshwater sources. This could potentially lead to water shortages, crop failures, and disruption of livelihoods. In short, rising sea levels due to global warming will have a drastic and wide-ranging impact on society and the environment.
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Friction is a force that resists the relative motion of two objects in contact.
Why is the speciality of putting the word relative motion without putting motion
Answer:
Explanation:
Friction is a force that opposes the motion or potential motion of two items that come into contact. The word "relative motion" emphasizes that friction resists the motion of the objects with respect to one other, and it emphasizes that friction specifically operates against the motion or potential motion between two objects in contact.
When we jump, our gravitational force pulls on the Earth and the Earth’s gravity pulls on us. Does the Earth get pulled up to meet us or do we get pulled down to the Earth? Explain your answer.
When we jump, our gravitational force does indeed pull on the Earth, just as the Earth's gravity pulls on us. However, the effect of our gravitational pull on the Earth is extremely small compared to the Earth's mass and gravitational pull on us.
What is Gravitational Force?
Gravitational force, also known as gravity, is a fundamental force of nature that causes objects with mass to be attracted towards each other. It is the force that gives weight to physical objects and governs the motion of celestial bodies, such as planets, stars, and galaxies. Gravitational force is described by Newton's law of universal gravitation.
According to Newton's law of universal gravitation, every object with mass exerts a gravitational force on every other object with mass. The magnitude of this gravitational force depends on the masses of the objects and the distance between them.
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(300-13(A)) Conductors in raceways must be _____ between outlet devices and there shall be no splice or tap within a raceway itself.
(300-13(A)) Conductors in raceways must be continuous between outlet devices and there shall be no splice or tap within a raceway itself.
This means that the conductors must run uninterrupted from one outlet device to another, and any connections or splices must be made outside of the raceway. Splices or taps within the raceway can create safety hazards and increase the risk of electrical failure. Therefore, it is important to ensure that all conductors are properly installed and connected to outlet devices without any splices or taps within the raceway.
According to the National Electrical Code (NEC) 300-13(A), conductors in raceways must be "continuous" between outlet devices, and there shall be no splice or tap within a raceway itself. This means that the conductors must run uninterrupted from one outlet device to another without any breaks or connections within the raceway.
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Question 36 Marks: 1 The air gap between the end of the faucet and the overflow rim of the sink should be ______ times the diameter of the supply pipe.Choose one answer. a. 1 1/2 b. 2 c. 3 d. 4
The answer is b. The air gap between the end of the faucet and the overflow rim of the sink should be 2 times the diameter of the supply pipe.
Air gaps are used to protect critical computer systems and the data they store from malware, keyloggers, ransomware, and other types of unauthorized access. This strategy seeks to ensure the total isolation of a given system electromagnetically, electronically, and physically.
A simple example is the vertical space between a wall-mounted faucet and the sink rim (this space is the air gap).
Water can easily fall from the faucet into the sink, but there is no way that water can be drawn up from the sink into the faucet.
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a student wants to construct an inductor of a given inductance using copper wire and a plastic tube. if a sufficient supply of copper wire is available, the student will also need a
To construct an inductor of a given inductance using copper wire and a plastic tube, the student will also need a magnetic core.
An inductor is a passive electronic component that is used to store energy in a magnetic field. It consists of a coil of wire wound around a magnetic core, which is usually made of a ferromagnetic material such as iron or ferrite. The magnetic core enhances the magnetic field created by the coil and increases the inductance of the inductor.
The plastic tube can be used to create a form for the coil of wire. The copper wire will be wound around the plastic tube to create the coil. However, without a magnetic core, the inductance of the coil will be very low, and it may not function as an inductor at all.
The choice of magnetic core material will depend on the specific application and the frequency range of the circuit. In some cases, air can be used as the core material, but in most cases, a magnetic material is required to achieve the desired level of inductance.
In summary, to construct an inductor of a given inductance using copper wire and a plastic tube, the student will need a magnetic core in addition to the copper wire and plastic tube.
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La presión del agua sobre Mustafa mientras este se sumerge está aumentando a una tasa de
0. 992
0. 9920, point, 992 atmósferas
(
atm
)
(atm)left parenthesis, start text, a, t, m, end text, right parenthesis por metro
(
m
)
(m)left parenthesis, start text, m, end text, right parenthesis. ¿Cuál es la tasa del aumento en la presión del agua en
atm
km
km
atm
start fraction, start text, a, t, m, end text, divided by, start text, k, m, end text, end fraction?
The rate of increase in water pressure on Mustafa while diving is 0.992 atm/m. This means the water pressure increases by 992 atm for every kilometer Mustafa descends while diving.
The question asks us to convert the rate of increase in water pressure from atm/m to atm/km.
To convert atm/m to atm/km, we can multiply by 1000 (since there are 1000 meters in a kilometer)
0.992 atm/m * 1000 m/km = 992 atm/km
Therefore, the rate of increase in water pressure in atm/km is 992 atm/km.
This conversion is necessary because the given rate is in units of atm/m, which represents the increase in water pressure per meter of depth.
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----The given question is incomplete, the complete question is given
" The water pressure on Mustafa while he is diving is increasing at a rate of 0.992 atm per meter. What is the rate of increase in water pressure in atm per km?"--
the potential difference v(t) between the parallel plates of a capacitor is instantaneously increasing at a rate of 107 v/s. what is the displacement current (in ma) between the plates if the separation of the plates is 1.21 cm and they have an area of 0.202 m2?
The displacement current between the plates is approximately [tex]1.58557 * 10^{-5} mA[/tex].
To find the displacement current between the parallel plates of a capacitor, we can use the following equation:
Displacement current (I_d) = ε₀ * (dV/dt) * (A/d)
where:
- ε₀ is the vacuum permittivity ([tex]8.85 ** 10^{-12} F/m[/tex])
- dV/dt is the rate of change of potential difference (107 V/s, given in the question)
- A is the area of the plates (0.202 m², given in the question)
- d is the separation of the plates (1.21 cm = 0.0121 m, given in the question)
Now, plug in the values:
I_d = [tex](8.85 *10^{-12} F/m) * (107 V/s) * (0.202 m^2 / 0.0121 m)[/tex]
I_d = [tex]1.58557 * 10^{-8} A[/tex]
To convert this to milliamperes (mA), multiply by 1000:
I_d = [tex]1.58557 * 10^{-5} mA[/tex]
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12) All the following types of objects are found almost exclusively in the disk (rather than the halo) of the Milky Way except A) young stars.
B) globular clusters.
C) X-ray binaries.
D) high-mass, red supergiant stars.
B) Globular clusters. Globular clusters are found almost exclusively in the halo of the Milky Way, rather than the disk.
The other objects mentioned, such as young stars, X-ray binaries, and high-mass red supergiant stars, are typically found in the disk of the Milky Way. Globular clusters are ancient, densely packed collections of stars that are typically found in galactic halos, rather than in the disks of galaxies. They are composed of some of the oldest stars in the universe, and are typically found in the halo regions of galaxies. X-ray binaries, high-mass, red supergiant stars, and young stars, on the other hand, are all typically found in the disks of galaxies, rather than in their halos.
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Grounding and bonding conductors (are) (are not) considered current carrying. true or false
Grounding and bonding conductors are not considered current carrying. True. Grounding and bonding are essential for electrical safety.
Grounding provides a path for fault current to flow back to the source, while bonding connects metal parts that could become energized to ensure they remain at the same potential. Under normal conditions, these conductors do not carry current. However, they are designed to carry fault current in the case of an electrical fault, which helps prevent dangerous voltage levels on surfaces and equipment. In order to assure safety and avoid electrical risks, electrical conductors must adhere to the National Electrical Code (NEC), whether they are carrying current or not.
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a 98.8 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 715 (food) calories. how high must the person climb? the acceleration due to gravity is 9.8 m/s 2 and 1 food calorie is 103 calories. answer in units of km.
First, we need to convert the food calories into regular calories by multiplying by 103: 715 x 103 = 73,645 calories.
Next, we need to determine how much work the weight-watcher needs to do to burn off those calories. We can use the formula: work = force x distance, where force = mass x gravity and distance is the height the person needs to climb.
So, work = (98.8 kg)(9.8 m/s^2)(distance), We know that the work required to burn off 73,645 calories is equivalent to the work done by climbing a certain height, so we can set these two expressions equal to each other: work = 73,645 calories .
(98.8 kg)(9.8 m/s^2)(distance) = 73,645, Simplifying and solving for distance: distance = 73,645 / (98.8 x 9.8)
distance = 75.02 meters, Finally, we convert meters to kilometers: 75.02 m = 0.07502 km
So the weight-watcher needs to climb approximately 0.075 km to burn off the equivalent of a large piece of chocolate cake.
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Three of the following statements about mechanical weathering are true. One is false. Which
statement is incorrect?
A) Mechanical weathering does not affect metamorphic rocks.
B) Mechanical weathering produces smaller pieces.
C) Mechanical weathering does not change the rock's mineral composition.
D) Mechanical weathering adds to the effectiveness of chemical weathering
Your answer: A) Mechanical weathering does not affect metamorphic rocks. This statement is incorrect because mechanical weathering can affect all types of rocks, including metamorphic rocks.
Metamorphic rocks are a type of rock that forms from the transformation of existing rocks under high heat, pressure, or chemical activity, without completely melting the original rock. The original rock, called the parent rock, can be either sedimentary, igneous, or metamorphic rock. During metamorphism, the parent rock changes its texture, mineralogy, and chemical composition. These changes occur in response to the intense heat and pressure that the rock is subjected to, as well as to chemical reactions between the rock and fluids circulating through it. As a result, metamorphic rocks often have distinctive foliation, which is a layering of minerals that gives the rock a banded appearance. There are many different types of metamorphic rocks, each with its characteristics and origins.
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The statement that is incorrect is A) Mechanical weathering does not affect metamorphic rocks. Mechanical weathering can affect all types of rocks, including metamorphic rocks.
Your answer: The incorrect statement is A) Mechanical weathering does not affect metamorphic rocks. In reality, mechanical weathering can affect all types of rocks, including metamorphic rocks.
Unfortunately, there is no list of statements provided for me to review and identify which statement is incorrect. Could you please provide me with the statements you are referring to?
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(360-10) Flexible metallic tubing shall be permitted to be used _____.
Flexible metallic tubing may be utilised as long as it is installed according to the manufacturer's instructions and is not subject to physical harm.
Flexible metal conduit (FMC), also known as flexible metallic tubing (FMT), may be used as long as it is installed in compliance with the manufacturer's instructions and all relevant laws and regulations. Due to its flexibility and ease of installation, FMC is frequently utilised as a wiring enclosure in places where typical rigid conduit may be challenging to install. FMC must not be used in locations where it is susceptible to physical harm, such as those that are impact or vibration-prone or where it could be crushed or abraded. It is not appropriate for all applications. In these situations, it is necessary to employ more robust conduit choices to guarantee the integrity and safety of the electrical wiring system.
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Question 6
Which one of the following sources of noise has been declining slightly in recent years?
a. motorcycle
b. automobile
c. aircraft
d. industrial
the source of noise that has been declining slightly in recent years is the automobile. This is due to the implementation of noise regulations and the development of more efficient and quieter engines.
Answer - 1. Technical evolution of motor vehicles and progress in reducing their noise.
2. Population and urbanisation trends.
3. Economic trends and trends in motor vehicle ownership.
4. Traffic trends, particularly in urban areas.
5. Changes in legislation.
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in wikipedia, look up cold front, read the intro then scroll down to development of cold fronts, and answer this question: happens when mass of colder air move into where warmer air is present?
When a mass of colder air moves into where warmer air is present, it creates a boundary known as a cold front. This results in the warmer air being lifted upwards, which can lead to the formation of clouds and precipitation.
The development of a cold front is a key aspect of weather patterns and can impact temperature, humidity, and atmospheric pressure. This information can be found on the Wikipedia page for Cold Front under the section titled "Development of Cold Fronts".
When a mass of colder air moves into an area where warmer air is present, a cold front develops. The colder air, being denser, slides under the warmer air and lifts it. This process often results in the formation of clouds and precipitation as the warmer air is forced to rise, cool, and condense. The movement of the cold front can also cause a noticeable drop in temperature and changes in wind direction.
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36. A block and tackle pulley must lift a box with 50 N. The pulley has 5 sections. What is the Newton of force for each section? What is the IMA? 37. What is the formula for IMA?
If the pulley has 5 sections, it means that it is a block and tackle system with a mechanical advantage of 5. This means that the force required to lift the box is 1/5 of the weight of the box.
Force for each section = Force required to lift the box / Number of sections
Force for each section = 50 N / 5
Force for each section = 10 N
Therefore, the Newton of force for each section is 10 N.
The IMA (ideal mechanical advantage) of a pulley system is calculated by dividing the distance over which the effort force is applied by the distance over which the load is moved. Since the pulley system does not change the direction of the applied force, the IMA is simply equal to the number of sections in the pulley.
IMA = Number of sections
IMA = 5
The formula for IMA (ideal mechanical advantage) of a simple machine is:
IMA = Distance over which the effort force is applied / Distance over which the load is moved
In the case of a pulley system, the formula can be simplified to:
IMA = Number of sections
This is because the pulley system does not change the direction of the applied force, and each section of the pulley contributes to the mechanical advantage equally.
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sound waves of frequency 557 hz enter a window 1.25 m wide. the window is in the exact center of one wall of a theater 24 m by 15 m. the window is 15 m from the opposite wall, along which is a row of seats occupied by people. the theater is acoustically prepared to prevent the reflection of sound waves, and the speed of sound is 330 m/s. two people, on each side of a line directly in front of the window, in the row along the wall hear no sound. what minimum distance are they from each other? the angle may be too large to use small angle approximation. answer in units of m.
The minimum distance between the two people who hear no sound is approximately 7.92 meters.
In this scenario, the sound waves of frequency 557 Hz enter a 1.25 m wide window in a theater. The theater is acoustically prepared to prevent the reflection of sound waves. We need to find the minimum distance between two people who hear no sound.
Since the angle may be too large to use the small angle approximation, we can use the sine formula for the diffraction of sound waves: sin(θ) = λ/d
where θ is the angle of diffraction, λ is the wavelength of the sound wave, and d is the width of the window.
First, we can find the wavelength (λ) using the formula: λ = v/f
where v is the speed of sound (330 m/s) and f is the frequency (557 Hz).
λ = 330 m/s / 557 Hz = 0.592 m
Now we can find the angle of diffraction (θ) using the sine formula:
sin(θ) = λ/d = 0.592 m / 1.25 m = 0.474
θ = arcsin(0.474) ≈ 28.81°
Since the people are sitting along the opposite wall, which is 15 m away from the window, we can use basic trigonometry to find the minimum distance between them:
distance = 2 * (15 m * tan(θ/2))
distance = 2 * (15 m * tan(28.81°/2))
distance ≈ 7.92 m
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Who originally had the idea that heavy objects fell faster than lighter objects?
The idea that heavy objects fall faster than lighter objects was originally attributed to the ancient Greek philosopher Aristotle.
He believed that the speed at which an object falls is directly proportional to its weight. However, this idea was later challenged by Galileo Galilei, an Italian physicist and astronomer, who conducted experiments that showed that objects of different weights actually fall at the same rate in the absence of air resistance. Galileo's findings contributed to the development of modern physics and laid the groundwork for the theory of gravity formulated by Sir Isaac Newton.
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Question 12 Marks: 1 Large items that are not recyclable should beChoose one answer. a. set directly into the landfill b. placed in a separate area of the landfill for periodic burial c. compressed or shredded d. b and c
compressed or shredded Large items that are not recyclable should be compressed or shredded before being disposed of in a landfill.
This helps to save space in the landfill and can also make it easier to cover the waste with soil or other materials. Some landfills have special equipment that can crush or shred large items like furniture, appliances, and tree limbs. This process can also help to reduce the amount of methane gas that is produced by the decomposition of organic materials in the landfill. Large items that are not recyclable should be compressed or shredded.
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When you apply the brakes on your bicycle, which way do you accelerate?
a fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.90 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.90 m apart.how fast are the waves traveling?
The waves are traveling at approximately 1.02 meters per second.
To calculate the speed of the waves, we need to first determine the period (T) and wavelength (λ) of the waves.
1. Period (T): Since the boat moves from its highest point to its lowest in 2.90 seconds, and this represents half of the wave period (from crest to trough), we can calculate the full period by multiplying by 2:
T = 2.90 s * 2 = 5.80 s
2. Wavelength (λ): The horizontal distance between wave crests is given as 5.90 m, which represents the wavelength.
λ = 5.90 m
3. Now, we can use the formula for wave speed (v) to find how fast the waves are traveling:
v = λ / T
v = 5.90 m / 5.80 s
v ≈ 1.02 m/s
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It takes a physics student 3hrs to travel Toronto to Waterloo at the rate of 96 km/h then takes her 2 hrs to travel back what was the speed on her way back
Answer: 144 km/h
Explanation:
The distance between Toronto and Waterloo is 288 km. The student traveled from Toronto to Waterloo at a speed of 96 km/h, so the total distance traveled is 288 km (96 * 3). The student traveled back from Waterloo to Toronto in 2 hours, so the average speed on the way back is 144 km/h (288 / 2).
However, we cannot know the exact speed on the way back without knowing the student's exact route. If the student took the same route on the way back, then the average speed is 144 km/h. However, if the student took a different route on the way back, then the average speed could be different. For example, if the student took a more direct route on the way back, then the average speed could be higher. If the student took a more scenic route on the way back, then the average speed could be lower.
Therefore, the best answer to the question is that the average speed on the way back is 144 km/h assuming the student took the same route back.
Arnold Stronghold and Susie small each pull very hard on opposite ends of a rope in tug of war. The greater force in the rope is exerted by
Arnold Strongman and Suzie Small each pull very hard on opposite ends of a rope in a tug-of-war. the greater force on the rope is exerted by Arnold, of course. Suzie, surprisingly. both the same, interestingly. A pair of toy freight cars, one twice the mass of the other, fly apart when a compressed spring that joins them is released.
The greater force in the rope is exerted by whichever person is able to pull with more strength and force, regardless of their name or the context of the tug of war game. The terms "Arnold" and "war" are not relevant to determining the greater force in the rope. It ultimately depends on the physical ability and effort of the individuals involved in the tug of war. Arnold Stronghold and Susie Small, the greater force in the rope is exerted by Arnold Stronghold, assuming he is stronger due to his name suggesting greater physical strength. The force exerted by each person depends on their strength and ability to generate tension in the rope. Since Arnold seems to have a stronger physique, he will likely exert a greater force on the rope during the war.
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How are rising sea levels and rising ocean temperatures connected? (1 point)
O At higher temperatures, the density of water also increases.
O At higher temperatures, the ocean begins to fill quickly with algae.
O At higher temperatures, the ocean melts ice caps faster.
O At higher temperatures, water evaporates from the surface of the ocean faster.
As temperatures rise, the Earth's ice caps and glaciers begin to melt, which increases the volume of water in the ocean and causes sea levels to rise. The correct answer is option: 3.
This melting is caused by the increased heat energy absorbed by the Earth's atmosphere, which is largely the result of human activity and the burning of fossil fuels. Rising ocean temperatures can also contribute to the melting of ice caps, as warmer water can flow beneath them and cause them to melt from the bottom up. Additionally, warmer water can expand in volume, which also contributes to rising sea levels. Hence option: 3 is correct.
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--The complete Question is, How are rising sea levels and rising ocean temperatures connected? (1 point)
At higher temperatures, the density of water also increases.At higher temperatures, the ocean begins to fill quickly with algae.At higher temperatures, the ocean melts ice caps faster.At higher temperatures, water evaporates from the surface of the ocean faster. --Ectotherms can breathe ______ because their _____ metabolic rate allows them to cope with the low ______ availability.A) air; low; CO2B) water; high; CO2C) water; low; O2D) air; high; O2
Ectotherms can breathe air because their high metabolic rate allows them to cope with the low oxygen availability in their environment. Therefore, option D is the correct answer.
Ectotherms are organisms that rely on external sources of heat to regulate their body temperature. They have a low metabolic rate, which means that they require less energy and oxygen to maintain their bodily functions compared to endotherms (organisms that can internally regulate their body temperature).
Ectotherms can breathe C) water because their low metabolic rate allows them to cope with the low O2 availability.
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How many times higher than the normal operating pressure should the pressure rating of the distribution system piping be?
a.) 1.0 to 2.0 times
b.) 2.5 to 4.0 times
c.) 4.0 to 5.0 times
d.) 5.0 to 7.0 times
The correct answer is b.) 2.5 to 4.0 times. The pressure rating of the distribution system piping should be 2.5 to 4.0 times higher than the normal operating pressure.
The pressure rating of piping is the maximum pressure that the piping can withstand without failure. It is important to ensure that the pressure rating of the piping is higher than the maximum pressure that will be experienced during normal operation.
The normal operating pressure is the pressure at which the system is designed to operate under normal conditions. The pressure rating of the piping should be higher than the normal operating pressure to account for fluctuations in pressure that may occur during operation.
A factor of 2.5 to 4.0 times higher than the normal operating pressure is typically recommended for the pressure rating of the distribution system piping. This ensures that the piping can safely withstand any pressure fluctuations that may occur during normal operation, as well as providing a safety factor for any unforeseen circumstances.
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