The advantage of sending signals through networks of cables, as opposed to using infrared waves, can be explained through the following points reliability, security, bandwidth, signal strength, and reduced interference compared to using infrared waves for data transmission.
The Reliability: Networks of cables, such as fiber-optic or Ethernet cables, provide a more stable and consistent connection compared to infrared waves, which can be affected by environmental factors like weather or physical obstacles. Security: Cable-based networks offer a higher level of security as signals are confined within the physical cables, reducing the risk of interference or unauthorized access compared to infrared waves that travel through the air. Bandwidth: Cables can support higher bandwidths, allowing for faster data transfer rates and the ability to handle a larger volume of simultaneous connections. Signal Reduced Interference: Cable-based networks are less susceptible to interference from other electronic devices or radio frequencies, ensuring better signal quality and less potential data loss. In summary, the advantages of sending signals through networks of cables include improved reliability, security, bandwidth, signal strength, and reduced interference compared to using infrared waves for data transmission.
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You slide a TV up a ramp to move it into a house. What kind of simple
machine are you using?
O A. Screw
B. Inclined plane
O c. Wheel and axle
O D. Lever
SUBMIT
Answer:
inclined plane
Explanation:
An inlcined plane is a simple machine used to slide an object over an obstacle
When a retailer offers t-shirts in small, medium, large, and x-large, and in 25 colors, the competitive strategy they are using is?
When a retailer offers t-shirts in small, medium, large, and x-large, and in 25 colors, the competitive strategy they are using is Variety
What is competitive strategy ?A business uses a set of rules and practises known as a competitive strategy to acquire a competitive edge in the market. It is the procedure for choosing and carrying out strategies that enable a company to strengthen its position in the market.
This plan was developed after evaluating the opportunities, threats, strengths, and weaknesses of the opposition and contrasting them with your own.Establishing a competitive advantage in the market is the goal of a competitive strategy. Porter's Five Forces Model is the main instrument for assessing an organization's competitive position in the market.Learn more about Competitive strategy here:
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The diameter of a human red blood cell is 0.000009 \text{ m}0.000009 m0, point, 000009, start text, space, m, end text. The diameter of a cold virus is 0.00000003 \text{ m}0.00000003 m0, point, 00000003, start text, space, m, end text. Approximately how many times as large is the diameter of a red blood cell as the diameter of a cold virus
Red Cell is 300 times larger than the virus.
What is the diameter of human red blood cell?The discocyte shape of human RBCs is approximately 7.5 to 8.7 μm in diameter and 1.7 to 2.2 μm in thickness.
How do you calculate the diameter of a red blood cell?The mean diameter of blood cells is determined by using the wave length of laser light λ = 632,2nm.
According to Rayleigh's expression (William Strutt) cell diameter d can be written as d = 1.22 λ/ tanθ. By replacing tanθ the equation for erythrocyte diameter d is obtained: d = n·λ·L/r 1.
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https://brainly.com/question/1838255#SPJ4which step is not part of a normal conversation cycle
The step that is not part of a normal convection cycle is : Warmed air sinks, creating a high-pressure area as it falls.
The correct answer is option D.
In a normal convection cycle, the following steps occur:
A. Unequal heating creates a pressure difference: When a fluid, such as air, is heated unevenly, it creates regions of different temperatures. This temperature difference leads to a difference in air density and, consequently, a pressure difference.
B. Air flows from a high-pressure area to a low-pressure area: Due to the pressure difference created by unequal heating, air moves from the region of higher pressure to the region of lower pressure. This movement is known as the flow of air or fluid.
C. Cooled air sinks toward the surface, creating a low-pressure area above it: As the heated air rises and moves away from the heat source, it gradually cools down. Cooled air is denser than warm air, so it tends to sink back toward the surface, creating a low-pressure area above it.
Option D states that warmed air sinks, creating a high-pressure area as it falls. However, in a normal convection cycle, warmed air tends to rise due to its lower density compared to the surrounding air. The rising of warm air contributes to the creation of low-pressure areas.
Therefore, option D is not part of a normal convection cycle.
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The question probable may be:
Which step is not part of a normal convection cycle?
A. Unequal heating creates a pressure difference.
B. Air flows from a high-pressure area to a low-pressure area.
C. Cooled air sinks toward the surface, creating a low-pressure area
D. Warmed air sinks, creating a high-pressure area as it falls.
when boarding an airplane you bring a bag of chips. while in flight the bag puffs up, because
The air pressure drops as altitude rises. Initially, the pressure within the sealed container was the same as the pressure at sea level.
You bring a bag of chips with you when you get on an airline. Because the air pressure within the airtight bag is higher than the cabin air pressure, the bag expands while in flight.
There is a suction. In accordance with the Bernoulli principle, air pressure varies. The pressure in the flight cabin drops during takeoff and as the aircraft climbs in altitude. The pressure inside the package is higher when compared to the pressure inside the box or the bag.
Any variety of potato chips, including Pringles, are permitted in carry-on luggage for consumption during flights.
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lasers work by a process that turns the light from the laser into heat called:
Lasers work by a process that does not turn the light from the laser into heat. Instead, lasers operate on the principle of stimulated emission of radiation.
In a laser, atoms or molecules are excited to higher energy levels, and when they return to their ground state, they emit photons of light. These emitted photons are coherent, meaning they have the same frequency, phase, and direction. The emitted light is then amplified by passing it through a gain medium, such as a crystal or gas, resulting in a highly concentrated beam of light. This concentrated light beam is not converted into heat but rather maintains its optical properties and intensity.
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Lasers work by a process that turns the light from the laser into heat called: photothermolysis
What is an effect of gravity on objects on the surface of Earth? Check all that apply. Objects ""fall"" toward the center of Earth. Objects are pulled by Earth but do not pull on Earth. Objects accelerate at a rate of 9. 8 m/s each second. Objects travel at a rate of 9. 8 m/s toward the center of Earth. Objects are pulled by Earth more strongly than they pull on Earth.
Answer:
Objects are pulled toward earth
Objects travel at a rate of 9.8m/s
Explanation:
these are the only one that I know. sry :(
a running back with a mass of 70 kg and a speed of 9 m/s collides with, and is held by, a 105-kg defensive tackle going in the opposite direction. how fast must the tackle be going before the collision for their speed afterward to be zero?
If a running back with a mass of 70 kg and a speed of 9 m/s collides , then speed of tackle before the collision is 6 m/s .
Let the speed of the defensive tackle before the collision be = v .
The momentum of the system before the collision is given by the momentum of the running back,
⇒ that is ; 70 × 9 = 630 Kgm/s , and
the momentum of the tackle is , (-105 kg) × (v m/s) ;
After the collision, the momentum of the system must be zero, so the momentum before the collision must equal the momentum after the collision ;
⇒ (70 × 9) + (-105 × v) = 0 ;
Solving for v, we get ;
⇒ v = 630/105 = 6 m/s
Therefore , the defensive tackle must be going 6 m/s in the opposite direction before the collision for the two players to come to a stop after the collision.
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21. The number of significant figures in 7316000 are (a) 7 (b) 6 (c) 5 d) 4
Answer: d
Explanation: because the zeros are place holders.
In number 7316000 their are four Significant figures
What do you mean by significant figures ?
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit.
since, in number 7316000 their are four non zero numbers that are 7,3,1 and 6 and three zeros hence (which are the last zeros hence disregarded) , the number of significant figures will be four .
correct option d) 4
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if you were to walk at a constant speed 20m/s for 30 seconds, how far would you walk?
Answer:
600m
Explanation:
30×20 at a constant speed is 600m.
An object has a tangential velocity of 23 m/s as it moves around a circular track with a
radius of 20 meters. What is the object's acceleration
Answer:
26.5m/s²
Explanation:
Given parameters:
Tangential velocity of the object = 23m/s
Radius of track = 20m
Unknown:
Acceleration = ?
Solution:
The acceleration of the body is its centripetal acceleration. It is given by;
a = \(\frac{v^{2} }{r}\)
v is the tangential velocity
r is the
a = \(\frac{23^{2} }{20}\) = 26.5m/s²
Two economists agree that labor market discrimination against certain workers unfairly leads to lower wages for the disfavored group. Economist X argues that government intervention is most likely necessary to eliminate this unfair treatment, whereas Economist York argues that the best solution to the unfair treatment is to let the market work to eliminate it on its own.
Economist Y is most likely to be correct when labor and product markets are highly competitive and the lower wages of the disfavored group result from:
A. Differences in human capital
B. Statistical discrimination
C. Discrimination by employers
Answer: C. Discrimination by employers
Explanation:
Economist Y is most likely to be correct when labor and product markets are highly competitive and the lower wages of the disfavored group result from discrimination by employers.
option C is the correct answer.
What is labor discrimination?
Discrimination in the workplace happens when an employer treats his or her employee unfairly or unequally because of specific characteristics.
Labor market discrimination against certain workers unfairly leads to lower wages for the disfavored group.
Example of labor market discrimination include the following;
when an employee is fired, when an employee is demoted, or when an employee is denied promotion due to some unjustified causeAccording economist Y, government intervention cannot eliminate this unfair treatment since it is caused by the market (employers) and the best solution to the unfair treatment is to let the market (employers) work to eliminate it on its own.
Thus, economist Y is correct because this discrimination is caused by the market (employers).
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In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the total body weight. d)the weight of the heart of a whale whose weight is 2.402 × 105 lbs. Answer in units of lbs.
Answer:
1201 lbs
Explanation:
Given that in mammals, the weight of the heart is approximately 0.5% of the total body weight.
Let the weight of the heart of a mammal be H
And the weight of the total body be B
The linear model that can gives the heart weight in terms of the total body weight will be:
H = 0.005B
B.) To find the weight of the heart of a whale whose weight is 2.402 × 105 lbs, substitute the whole weight in the formula.
H = 0.005 × 2.402 × 10^5
H = 1201 lbs
Therefore, the weight of the heart of the whale is 1201 lbs
Two negative charges are moved closer together. Write one or two sentences to describe the energy conversion that happens.
Answer:
They will repell each other so they both will give lots of energy and the situation is exothermic.
Explanation:
Got it right
As two negative charges are moved closer together, the electrostatic potential energy between them increases.
This increase in potential energy occurs because the like charges repel each other, and as they move closer, the force of repulsion becomes stronger, resulting in a higher potential energy state.
Hence, As two negative charges are moved closer together, the electrostatic potential energy between them increases.
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A rightward force is applied to a 6-kg object to move it across a rough surface at constant
velocity. The object encounters 15 N of frictional force. Use the diagram to determine the
gravitational force, normal force, net force, and applied force.
Fnorm = 58.8 N; Fnorm = 58.8 N; Fapp = 15 N; Fnet = 0 N. In the case of constant velocity, a = 0 m/s/s and Fnet = 0 N, Fgrav = m • g • 9.8 m/s/s • 6 kg • 58.8 N Ffrict = Fapp = 15 N since there is no horizontal acceleration.
A rightward force is what?A book is moved across a desk with a rightward acceleration by applying a rightward push to it. Consider the effects of friction. Pass over air resistance. Static Friction = Normal Force x Static Friction Coefficient is the formula for calculating static friction.
How can I determine force?Newton's second law of motion provides the definition of the force formula: An object's force is equal to its mass times its acceleration. F = m ⨉ a. To apply this formula, you must use SI units for force (newtons), mass (kilograms), and acceleration (meters per second squared).
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which mechanism restricts the expression of leptin to adipocytes? only adipocytes contain:
The mechanism that restricts the expression of leptin to adipocytes is the fact that only adipocytes contain the specific gene and regulatory elements required for the production and secretion of leptin.
Leptin is a hormone primarily produced by adipose tissue (fat cells) and plays a crucial role in regulating energy balance and appetite. The gene responsible for producing leptin is called the LEP gene, and it is predominantly expressed in adipocytes. The regulatory elements within the gene control its expression and ensure that leptin is produced specifically in adipocytes. These regulatory elements can be influenced by various factors such as hormones, signaling pathways, and nutritional status.Due to this specific gene expression pattern, leptin is mainly synthesized and released by adipocytes, providing feedback signals to the brain about the body's energy stores. This mechanism allows for the precise regulation of leptin levels and its functions in maintaining energy homeostasis.
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Bowling ball rolls up a ramp 0.75 m high without slipping to storage. it has an initial velocity of its center of mass of 4.2 m/s. (a) what is its velocity at the top of the ramp? (b) if the ramp is 1 m high does it make it to the top?
(a) Using conservation of energy, the velocity of the ball at the top of the ramp is 3.9 m/s.
(b) When the height of the ramp is 1 m, the ball does not make it to the top of the ramp
Given,
Height of the ramp, h = 0.75 m
Initial velocity of the center of mass, u = 4.2 m/s
(a) What is its velocity at the top of the ramp?
The bowling ball rolls up a ramp of height 0.75 m without slipping to storage, and it has an initial velocity of its center of mass of 4.2 m/s. It is asked to determine the velocity of the ball at the top of the ramp.
Let the velocity of the ball at the top of the ramp be v.
By the law of conservation of energy, the potential energy of the ball at the bottom of the ramp is equal to the kinetic energy of the ball at the top of the ramp.
PE at the bottom of the ramp = KE at the top of the ramp
mgh = (1/2)mu² + (1/2)Iω²
where
m = mass of the ball
g = acceleration due to gravity
I = moment of inertia of the ball
ω = angular velocity of the ball
Assuming the ball is a solid sphere,
I = (2/5)mr²
where r is the radius of the sphere
At the bottom of the ramp,
PE = mgh
At the top of the ramp,
KE = (1/2)mu² + (1/2)(2/5)mu²
Substituting the given values,
PE = mgh = 0.75mg
KE = (1/2)mu² + (1/2)(2/5)mu²
= (1/2)(7/5)mu²
= (7/10)mu²
At the top of the ramp,
PE = KE
0.75mg = (7/10)mu²
v = u * √(7/10)
= 4.2 * √(7/10)
≈ 3.9 m/s
Therefore, the velocity of the ball at the top of the ramp is approximately 3.9 m/s.
(b) If the ramp is 1 m high does it make it to the top?
When the height of the ramp is 1 m,
PE = mgh = 1mg
At the top of the ramp,
KE = (1/2)mu² + (1/2)(2/5)mu²
= (1/2)(7/5)mu²
= (7/10)mu²
At the top of the ramp,
PE = KE
1mg = (7/10)mu²
u² = (10/7)gh
v = u * √(7/10)
= √(10gh/7)
≈ 3.96 √h m/s
Therefore, when the height of the ramp is 1 m, the ball does not make it to the top of the ramp.
Using the law of conservation of energy, the velocity of the ball at the top of the ramp is found to be approximately 3.9 m/s. When the height of the ramp is increased to 1 m, the ball does not make it to the top of the ramp.
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a doubly ionized lithium atom has a electron in the n=3 state. what is the total energy of the electron
The total energy of the electron in the n=3 state of a doubly ionized lithium atom is approximately -1.51 eV. A doubly ionized lithium atom has lost two of its electrons, leaving it with one electron.
To calculate the total energy of the electron in a doubly ionized lithium atom with an electron in the n=3 state, we need to use the formula for total energy:
E = - (13.6 eV) * (Z^2 / n^2)
where E is the total energy of the electron, Z is the atomic number, and n is the principal quantum number.
E = - (13.6 eV) * (3^2 / 3^2)
E = - 13.6 eV
E = -(Z^2 * R_H) / n^2
where E is the total energy, Z is the atomic number of the ion (1 for doubly ionized lithium), R_H is the Rydberg constant (approximately 13.6 eV), and n is the principal quantum number (3 in this case).
E = -(1^2 * 13.6 eV) / 3^2 = -13.6 eV / 9 ≈ -1.51 eV
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how do you know the pole on the left is the south pole and the pole on the right is the north pole?
Answer:
Left is deciamled to the right \(x_{123}\)
Explanation:
Two objects are placed touching each other. Object A has a temperature of 1 T and Object B has a temperature of 2 T. What will be true after some time has passed
Both objects will have the same temperature, which is larger than T but smaller than 2*T
What is the thermodynamic equilibrium?A system in equilibrium if it is not able to experience spontaneous changes.
Here, we assume that our system is just the two objects with the given temperatures, and nothing else.
Thus, when we put them together, the only thing that will happen is a heat transfer (from the hotter object to the other one), until both of them have the same temperature (when both objects have the same temperature the heat flux stops).
Also, the object with temperature 2*T loses temperature, while the object with temperature T increases its temperature, then we can conclude that the final temperature of both objects will be in between these:
T < Tₓ < 2*T
To get the exact final temperature, we would need more information.
So what will be true after some time has passed?
The only thing that we know will happen is:
Both objects will have the same temperature, which is larger than T but smaller than 2*T
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Answer: Thermodynamics Unit Test
1. Heat will flow from Object B to Object A.
2. Heat flows due to a temperature difference between two objects.
3. 100 J/g
4. 9,887.5 J
5. Some heat is always lost to the environment.
6. Short Answer Question
Explanation:
100% correct
A stone is dropped from the edge of a roof, and hits the ground with a velocity of -120 feet per second. How high (in feet) is the roof?
The Height of the roof is 225 feet .
Calculation :
y = h - gt2/2 = 0;
h = gt2/2;
v(t) = dy/dt = - gt;
t = - v(t)/g;
h = g/2·v2(t)/g2
= v2(t)/(2g)
= 120²ft2/s²/(2·32ft/s²) =
225 ft
In mathematics, height is defined as the vertical distance from top to bottom of an object. Also called "height". The term geometry height refers to the measurement of an object along the coordinate geometry's y-axis.
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in of the Solar System
When the ancient Greeks looked at the night sky they noticed that some points of light seem to wander" in the sky
Which term do we use for these wanderers today?
nebulae
moons
stars
1 planets
2 moons
3 stars
4 Planets
Answer:
stars #3
Explanation:
they didn't know it was stars
Open the pt activity. perform the tasks in the activity instructions and then answer the question. which set of configuration commands issued on sw1 will successfully complete the etherchannel link between sw1 and sw2?
SW2 (config-if-range)channel-group 1 mode desirable. Ether-channel is made by combining multiple physical links that are seen as one link between two switches.
The possible combination to establish an ether-channel between SW1 and SW2 using LACP or PAgP .Ether-channel is a port link aggregation technology or port channel architecture used primarily on Cisco.
Ether-channel is used for providing fault tolerance and high-speed links between switches, routers and servers. To form an Ether-channel there are 2 protocol and link aggregation control protocol. Also load balances traffic across links in the bundle. Traffic is not necessarily distributed equally among all the links. Ether-channel will double or quadruple your bandwidth.
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There is evidence that a supermassive black hole is at the center of the milky way based upon:________
There is evidence that a supermassive black hole is at the center of the Milky Way based on several observations and studies.
Some of the key pieces of evidence include:
1. Stellar Orbits: Astronomers have observed the orbits of stars near the center of the Milky Way. These stars exhibit high speeds and tight orbital patterns, indicating the presence of a massive object with strong gravitational influence. By analyzing these stellar orbits, scientists have deduced the presence of a supermassive black hole.
2. Radio Source Sagittarius A*: In the constellation Sagittarius, there is a strong radio source known as Sagittarius A*. Detailed observations of this source have revealed it to be an extremely compact and highly energetic region. Based on its characteristics, scientists believe that Sagittarius A* is a supermassive black hole at the center of our galaxy.
3. X-ray and Infrared Emissions: Observations in X-ray and infrared wavelengths have detected intense emissions coming from the center of the Milky Way. These emissions are consistent with the behavior of matter being heated and accelerated as it falls into a supermassive black hole.
4. Gas and Dust Dynamics: Studies of gas and dust clouds near the galactic center have shown significant disturbances and high velocities. These observations suggest the presence of a massive object exerting gravitational forces on the surrounding material, indicating a supermassive black hole. Collectively, these lines of evidence provide strong support for the existence of a supermassive black hole at the center of the Milky Way.
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Water vapor is an example of a(n)
Answer:
Water vapor is steam. An example of water vapor is the floating mist above a pot of boiling water. Water in the form of a gas; steam.
Explanation:
Newton's _______ law of motion states that "For every action there is an equal and opposite reaction." A. second B. fourth C. first D. third
Answer:
first
Explanation:
Newton's Newton's first law of motion states that for every action and there's an equal and opposite reaction
Answer:
D. Third
Explanation:
Mara has a mass of 642000000000000000000000 kg. How would scientists express this number in scientific notation
Answer:
Scientific notation 6.42×10^21
A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later at the bottom of the slope, its speed is 22 m/s. what is the average acceleration?
\(a_avg = (22 m/s - 4 m/s) / 3 s = 18 m/s / 3 s = 6 m/s^2,\) Therefore, the average acceleration of the roller coaster car is \(6 m/s^2\).
Which of Newton's principles of motion is best illustrated by how friction causes a rolling ball to slow down and come to a stop?Newton's first law states that each change in velocity (a change in either magnitude or direction) must have a cause. The law of inertia is another name for this rule. An external force called friction slows down an object.
a_avg = (v_f - v_i) / t
So, the average acceleration is:
a_avg = (22 m/s - 4 m/s) / 3 s
= 18 m/s / 3 s
\(= 6 m/s^2\)
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Can an object with acceleration of zero be in motion?
Answer:
NO
Explanation:
if it has no acceleration then it's not moving
Answer:
Yes when the velocity is constant then the acceleration is said to be zero. Thus an object with 0 acceleration can be in motion.
Let me give you an example to make you more clear
Example:
When a car is traveling at a constant 90 km/h in a straight line has nonzero velocity and zero acceleration.
How could Sam determine the distance he drove and the true displacement between the two locations
Distance is the physical length travelled. While the displacement is the shorter distance between any two given points.
What is distance?Distance is a numerical representation of the distance between two objects or locations.
Distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.
Displacement is defined as the shortest distance between the two points.
Sam determines the distance by doing the calculation as;
distance = speed × time
Hence, the Sam determines the distance and displacement by the respective formulas.
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