fill in the blank. the electroencephalogram (eeg) records three types of electrical activity:___waves when a person is awake and attentive,___waves when a person is awake but relaxed and nonattentive, and___waves when a person is in deep sleep.
Answers
The electroencephalogram (EEG) records three types of electrical activity: beta waves when a person is awake and attentive, alpha waves when a person is awake but relaxed and nonattentive, and delta waves when a person is in deep sleep.
Beta waves are fast, low-amplitude brain waves typically observed when a person is awake, alert, and actively engaged in mental activities. They are associated with focus, concentration, and problem-solving.
Alpha waves are slower and larger than beta waves, and they are observed when a person is awake but in a relaxed and nonattentive state. Alpha waves can be seen when an individual is daydreaming or practicing meditation, as they are linked to a calm and peaceful mind.
Delta waves, on the other hand, are slow and high-amplitude waves that are characteristic of deep sleep, specifically stages 3 and 4 of non-rapid eye movement (NREM) sleep. During this time, the body undergoes restorative processes, such as tissue repair and the strengthening of the immune system. Delta waves are also associated with the release of growth hormones and the consolidation of long-term memories.
In summary, EEG records three main types of brain waves that are associated with different states of consciousness: beta waves for an awake and attentive state, alpha waves for a relaxed and nonattentive state, and delta waves for deep sleep. Each type of wave plays a crucial role in the overall cognitive and physical well-being of an individual.
For more such questions on Electroencephalogram (EEG).
https://brainly.com/question/30772416#
#SPJ11
Related Questions
A rifle is used during the biathlon event in the Olympics. The rifle has a mass
of 3 kg and the bullet has a mass of 0.015 kg. After it is shot, the bullet travels
at a speed of 450 m/s. What is the total momentum of the rifle bullet system
after the bullet is shot?
A. 1350 kg-m/s
OB. 0 kg-m/s
O C. 6.75 kg-m/s
D. 1365 kg-m/s
Answers
Answer:
0 kg m/s
Explanation:
before the bullet is shot the velocity of the gun & the bullet is 0.
Answer:
0 kg-m/s
just did it ;D
Explanation:
how are zero gravity conditions created in simulated free fall
Answers
Thus, simulated freefall is a method of creating zero gravity conditions by allowing a spacecraft to travel in orbit, resulting in a constant state of freefall. During this process, the gravitational pull of the Earth and the centripetal force generated by the spacecraft’s motion are balanced, resulting in a state of weightlessness or zero gravity inside the spacecraft.
Simulated free fall is a process that is used to create zero gravity conditions in space. It is done by allowing a spacecraft to travel in an orbit, which results in a constant state of freefall. The conditions in a spacecraft during a simulated freefall are similar to those in a state of zero gravity. In simulated freefall, the spacecraft moves at a speed that allows it to remain in orbit while constantly falling towards the Earth. During this process, the gravitational pull of the Earth and the centripetal force that is generated by the spacecraft’s motion are balanced. This balance results in a state of weightlessness or zero gravity inside the spacecraft. In addition to being used for research and experimentation, simulated freefall is also used to train astronauts for spaceflight. By creating a zero gravity environment on Earth, astronauts can get a feel for what it will be like to work and live in space. They can practice tasks such as moving around and handling equipment, which are much different in zero gravity than they are on Earth.
to know more about centripetal force visit:
https://brainly.com/question/14021112
#SPJ11
A skier is moving at a constant velocity for 20 seconds when he hits a downhill slope of 60 meters and begins to accelerate at 6 m/s^2 for 6 seconds. At the bottom of the hill he begins to stop over 10 seconds
a. What was the skiers constant velocity before going down hill?
b. What was the skier’s acceleration as he comes to a stop?
c. What was the skier’s total distance over the 36 seconds?
d. What was the skier’s average speed during the 36 seconds?
Answers
A stone is dropped from the top of a tall building and at the same time another stone is thrown vertically upwards from the ground level with a velocity of 20m/s. The stones meet at exactly 5s after their release. Calculate the height of the building? (g=10m/s²)
Answers
The height of the building is 42.4 meters.
What is the height of the building?
Let's call the height of the building "h". We can use the following kinematic equations to solve for "h":
For the stone that is dropped from the top of the building:
h = (1/2)gt² (Equation 1)
For the stone that is thrown upwards from the ground:
y = vt - (1/2)gt² (Equation 2)
where;
y is the distance travelled by the stone upwards from the ground andv is the initial velocity of the stone (which is 20 m/s in this case).We know that the two stones meet at exactly 5s after their release. This means that the distance travelled by the stone thrown upwards from the ground is equal to the height of the building, i.e.,
y = h
We can substitute this equation into Equation 2 and rearrange it to solve for "t":
h = vt - (1/2)gt²
h = 20t - (1/2)gt²
t = (2h/g - 20)/(-1) (Equation 3)
Now we can substitute Equation 3 into Equation 1 and solve for "h":
h = (1/2)g((2h/g - 20)/(-1))²
h = (1/2)g(2h/g - 20)²
h = (1/2)g(4h²/g² - 80h/g + 400)
Simplifying this equation by multiplying everything by 2g and moving all the terms to one side, we get:
4h² - 160h - 400 = 0
Solving this quadratic equation using the quadratic formula, we get:
h = (160 ± sqrt(160² + 4(4)(400))) / (2(4))
h = (160 ± sqrt(32,000)) / 8
We can ignore the negative solution, so:
h = (160 + 178.88) / 8
h = 42.4 meters
Learn more about height here: https://brainly.com/question/1739912
#SPJ1
OK so big sich. here so #relationships #BFGF
W. T. F does roly polying someone mean
Someone told me it means in a relationship that its when someone is dating someone but they find someone they also like but not fully dating them so its not 100% cheating so W T F DOES IT MEAN
Answers
Answer:
I have know idea what that means lol.
Thanks for the free points. Hope you have a fantastic rest of your life!
An undersea vessel is spherical with an external diameter of 5.20 meters. The mass of the vessel is 74,400 kg. It is anchored to the sea floor by a cable. density of sea water = 1.025x103 kg/m3 a) Draw a free-body diagram showing all forces. b) Calculate the buoyant force on the vessel. c) Calculate the tension in the cable.
Answers
The mass of the vessel, m = 74400 kg
The external diameter, d = 5.20 m
Radius, r = 5.2 / 2 = 2.6 m
\(\begin{gathered} \text{Density of sea water, }\rho_w=1.025\times10^3\operatorname{kg}m^{-3}^{} \\ \rho_w=1025\operatorname{kg}m^{-3} \end{gathered}\)The volume of the vessel is given by the volume of a sphere
\(\begin{gathered} V\text{ = }\frac{4}{3}\pi r^3 \\ V\text{ = }\frac{4}{3}\times3.142\times2.6^3 \\ V\text{ = }73.63m^3 \end{gathered}\)a) The buoyant force (B) is given by the formula:
\(\begin{gathered} B\text{ = }\rho_wgV \\ B\text{ = 1025}\times9.8\times73.63 \\ B\text{ = }739613.35 \\ B\text{ = 740000 (to the nearest ten thousand)} \\ B\text{ = 7.40}\times10^5N \end{gathered}\)b) The tension in the cable is given by the equation
\(T\text{= B - mg}\)Where T represents the tension
T = 739613.35 - 74400(9.8)
T = 10493.35
\(T\text{ = 1.04}\times10^4N\)The the x and y vector velocity components of a moving object are given as vy = 6.5 m/s and vx = –3.1 m/s. Calculate the resultant velocity and direction.
Answers
In this kind of vector additions, we use Pythagorean theorem, which is √(Vx² + Vy²)
If we use it, the velocity is found to be √(-3.1² + 6.5²) ≅ 7.20 m/s
And when it comes to the direction, I want you to think of coordinate system and a compass. X coordinate is negative and Y coordinate is positive. The direction is northwest (not strictly).
If you think anything is wrong, or you have anything that you do not understand, please let me know. I am sorry for my bad English by the way ^^
A converging lens makes a parallel beam of light from a distant object to
O to become invisible
to be visible with different colors
O come together to focus at a single point
come apart from a single point of focus
Answers
where are the new skin cells made
Answers
Answer:
epidermis
The top 18 to 23 layers of your skin are made of dead cells. New skin cells form at the bottom of the epidermis, which is the top part of your skin. Skin cells change shape. They start off kind of fat and square.
Explanation:
What happens when you throw a basketball up toward the hoop? If you are lucky, the ball sinks into the net. You score two points before the ball drops down to the ground. The basketball isn’t heavy. Why doesn’t it stay up in the air when you throw it? Have you ever heard the saying, What goes up must come down? This saying helps explain what happens to the basketball. It is being acted on by an invisible force called gravity. Gravity is the force in the universe that attracts all objects to each other.
Gravity has existed since the beginning of the universe. It holds everything in the universe in place. We know it is always there. It is hard to understand how it works. First, you need to understand that there is gravitational attraction between all objects. There is gravitational attraction between you and Earth, between Earth and the Moon, and between Earth and the Sun. You cant feel the gravitational attraction between you and Earth. However, it is what keeps your feet planted firmly on the ground. Imagine spinning around and around on a merry-go-round. As long as you hold on, you will stay on the merry-go-round. Don’t let go! You will fly off and land on the ground. This analogy helps us visualize the gravitational attraction between Earth and you. Earth is spinning on its axis. Gravity keeps you on Earth rather than flying out into space.
Now think about the gravitational attraction between Earth and the Moon. The same force that keeps you on Earth pulls the Moon and Earth together. This attraction keeps the Moon in orbit around Earth. Also think about the affect of the Moons gravitational force on Earths oceans. The gravitational pull of the Moon makes the ocean tides rise and fall.
There is attraction between you and Earth and between the Moon and Earth. The Sun also has a gravitational pull on Earth. This attraction makes the Earth orbit the Sun. The Suns attraction is very strong. All objects in the solar system orbit around this medium-sized star. What would happen if the Suns gravitational attraction suddenly disappeared? All the planets, including Earth, would fly off into space just like you would if you let go of the merry-go-round.
There is gravitational attraction between all objects. Why is the effect stronger in some cases? For example, Earths gravity has a more powerful effect on you than the Suns gravity. How could this be possible? After all, the Suns gravitational attraction holds all of the objects in the solar system. The force of gravity between two objects actually depends on two things. It depends on the mass of the two objects. It also depends on the distances between them. The greater the mass of the objects, the greater the gravitational force between them. In other words, the bigger an object is, the more gravity it has. Distance also has a large effect. The closer objects are to each other, the stronger their gravitational force of attraction. As they get farther apart, the force between them gets weaker. The Sun is much more massive than Earth, but the distance between you and Earth is less. The gravitational pull of the Sun has little effect on you because the distance is so large.
Gravity is the invisible force that attracts all objects, no matter their size or mass. The Sun has the strongest gravitational force of any object in the solar system. It attracts all astronomical objects into orbit around itself. Without this force, everything would fly off into the universe.
Which of the following summaries expresses the main points of the passage best?
Group of answer choices
I believe gravity is the most important aspect of our universe. Without it we would all be floating off into the universe. There wouldn’t be any orbits; instead, all planetary bodies would simply float around, running into each other when they crossed paths and just wandering forever.
There is a gravitational force between all objects in the universe. Gravitational force is what keeps all components of our solar system in orbit around the Sun, as well as moons in orbit around planets. The force of gravity affects Earth's tides and holds us on Earth's surface. The force of gravity between objects depends on their masses and the distance between them.
Gravity is hard to understand and scientists have little to no understanding of how it works. We know that gravity is out there, but the specifics are often lost on us. Plants, animals, and humans are all able to grow tall due to the pull on Earth from the Sun. Without the Sun we would all just stretch out along Earth's surface.
None of the above
Answers
Answer:
What happens when you throw a basketball up
toward the hoop? If you are lucky, the ball sinks
into the net, scoring two points before dropping
back down to the ground. The basketball isn’t
that heavy, so why doesn’t it stay up in the air
when you throw it? Have you ever heard thesaying, “What comes up must come down”?
This saying is a simple explanation for what
causes the basketball to fall back to the ground.
It is being acted on by an invisible force called
gravity, which is the basic force in the universe
that attracts all objects to each other.
1 Gravity has existed since the beginning of the universe. It is hard to understand how or why it
works, but we know it is always there because it holds everything in the universe in place. First,
you need to understand that there is a gravitational attraction between you and Earth, between
Earth and the Moon, and between Earth and the Sun. Even though you can’t feel it, the
gravitational attraction between you and Earth is what keeps your feet planted firmly on the
ground. Imagine spinning around and around on a merry-go-round. As long as you are holding
on, then you stay on the merry-go-round, but if you ever let go, you will fly off and land on the
ground. This is a useful analogy in visualizing the gravitational attraction between Earth and
you. Earth is spinning on its axis and thanks to gravity, you are held to your position on Eart
rather than flying out into space. Explanation: this is what i can do!:)
Answer:
I believe gravity is the most important aspect of our universe. Without it we would all be floating off into the universe. There wouldn’t be any orbits; instead, all planetary bodies would simply float around, running into each other when they crossed paths and just wandering forever.
Explanation:
this is the best match
WILL RATE! You sit in between two speakers located 25 feet apart which are emitting the same sound in phase. You observe that when you are 5 feet from the left speaker and 20 feet from the right speaker, the sound you hear is at a minimum intensity.
Which of the following could NOT be the wavelength λ of the sound waves produced by the speakers?
Group of answer choices
25 feet
30 feet
10 feet
All of these are possible wavelengths
6 feet
Answers
The wavelength that could NOT be produced by the speakers is 30 feet.
To determine which wavelength could not be produced, consider the path difference between the two speakers. When you are 5 feet from the left speaker and 20 feet from the right speaker, the path difference is 15 feet (20 - 5).
For the sound intensity to be at a minimum, the path difference must be an odd multiple of half the wavelength (λ/2). So, the equation to solve is:
15 = (λ/2) * (2n + 1)
Where n is an integer. Evaluating this equation for each wavelength option:
- For 25 feet, n = 1, so the equation is true
- For 30 feet, there is no integer value of n that satisfies the equation
- For 10 feet, n = 1, so the equation is true
- For 6 feet, n = 2, so the equation is true
Therefore, a 30-foot wavelength could NOT be produced by the speakers.
To know more about path difference click on below link:
https://brainly.com/question/1674815#
#SPJ11
please help me with these 2 questions :D
Answers
Answer:
Explanation:
1- incident ray
2- the substance through which the wave travels
Answer: the incident ray(the incident ray is the ray striking the mirror at the point of incidence while the refracted ray is the ray leaving the mirror)
The substance through which the ray or wave travels.
what are the uses of convex lens
Answers
Answer:A convex lens is employed in microscopes and magnifying glasses to converge all incoming light rays to a particular point. ...
The convex lens is used in cameras. ...
A convex lens is used for the correction of hyperopia. ...
The converging lens is used in the projector as well.
. A car starts to move from rest has an acceleration of 3m/s².what will be the velocity and distance travelled by the car after 50sec.
Answers
Sure! Here are the steps for calculating the velocity and distance traveled by the car after 50 seconds :
Step 1: Calculate the velocity using the equation:
\(v = u + at\)
where:
- \(v\) is the final velocity
- \(u\) is the initial velocity (0 m/s, as the car starts from rest)
- \(a\) is the acceleration (3 m/s²)
- \(t\) is the time (50 seconds)
Substituting the values into the equation:
\(v = 0 + (3 \, \text{m/s²}) \times (50 \, \text{s})\)
Step 2: Calculate the distance traveled using the equation:
\(s = ut + \frac{1}{2}at^2\)
where:
- \(s\) is the distance traveled
- \(u\) is the initial velocity (0 m/s)
- \(a\) is the acceleration (3 m/s²)
- \(t\) is the time (50 seconds)
Substituting the values into the equation:
\(s = 0 \times (50 \, \text{s}) + \frac{1}{2} \times (3 \, \text{m/s²}) \times (50 \, \text{s})^2\)
Now, let's simplify these equations:
\(v = 3 \times 50\)
\(s = \frac{1}{2} \times 3 \times 50^2\)
Calculating the results:
\(v = 150\) m/s
\(s = 3750\) meters
Therefore, after 50 seconds, the car will have a velocity of 150 m/s and would have traveled a distance of 3750 meters.
When entering an expressway, in the acceleration lane you should: A search for a gap in traffic and adjust your speed to the speed of the traffic. B set the cruise control for highway speed. C make a complete stop and check traffic for a suitable gap. D get as close to the vehicle ahead as possible so you can merge into the same gap.
Answers
Answer:A
Explanation: search for a gap in traffic and adjust your speed to the speed of the traffic.
1. A 0.1 mm diameter glass tube is inserted into a ethyl alcohol at 20 degree centigrade in a cup. How much does the Glycerin rise in the tube. The angle of alcohol with tube is 0 degree. D=0.1 mm=0.001 m 0∘ alcohol angel 20∘ ethyl alcohol η=1.1×10^−3 N⋅sec/ m^2sg=.0.79
Answers
A 0.1mm diameter glass tube is inserted into an ethyl alcohol at 20 degrees centigrade in a cup. The angle of alcohol with the tube is 0 degrees. D = 0.1 mm = 0.001m, alcohol angle is 0 degrees, ethyl alcohol
\(η=1.1×10^-3 N⋅sec/ m², s_g\)
=0.79.
We have to determine how much glycerin rises in the tube. The force that moves the liquid through the tube is the difference between the downward force of gravity on the liquid column and the upward capillary force produced by the surface tension of the liquid against the walls of the tube.
The height to which the fluid rises in a capillary tube may be measured by balancing the capillary force against the force of gravity on the column.
To know more about alcohol visit:
https://brainly.com/question/29268872
#SPJ11
Is called radiogenic heat?.
Answers
Within the subject of technology, radiogenic heat may be described because of the type of warmth that is released when radioactive isotopes disintegrate. consequently, we say that the thermal strength is launched by means of the nuclear disintegration of the radioactive isotopes.
Approximately 50% of the Earth's inner warmness originates from radioactive decay. four radioactive isotopes are chargeable for the general public of radiogenic warmness because of their enrichment relative to different radioactive isotopes uranium-238 (238U), uranium-235 (235U), thorium-232 (232Th), and potassium-40 (40K).
Radioactive heating refers back to the power dissipated within the interiors of planets, satellites, or asteroids as a consequence of the radioactive decay of radioactive isotopes (see radiochemistry). Radioactive isotopes are characterized by their decay energies and their half-lives.
Learn more about the heat here
https://brainly.com/question/934320
#SPJ4
please help me. ill give you brainliest if you help me (please only answer if you have the right one)
Answers
Answer:410.022779
Explanation: To figure out force, you use the equation F=MA. Well, in this case, you're trying to find M. The mass. All you have to do is rearrange. F=MA turns into A=F/M.
Astronaut X of mass 50kg floats next to Astronaut Y of mass 100kg while in space, as shown in the figure. The positive direction is shown. Astronaut X applies a force against Astronaut Y such that the kinetic energy of each astronaut as a function of time is shown in the graph. What is the change in momentum of the two-astronaut system and the change in momentum of each astronaut from immediately before the force was applied to immediately after the force was applied?
Answers
Answer:
C
Explanation:
The change in momentum of x has to be the opposite of the change in momentum of Y because the momentum is just transferred from one to another. But I'm still trying to figure it out how to calculate.
The change in momentum of the system is zero, change in momentum of astronaut X is -100 Kg·m/s and change in momentum of astronaut Y is 100 Kg·m/s.
To find the correct statement among all other options, we need to know more about the conservation of linear momentum.
What is linear momentum?Linear momentum of an object is the product of its mass and velocity of it.
What is conservation of linear momentum?In the absence of net external force, the linear momentum of a system remains constant.
How does the conservation of linear momentum apply to find the linear momentum of the two-astronaut system? The two astronaut system includes the both astronauts X and Y. When the astronaut X was applying force on astronaut Y, there is no external force on the system. Here we can not take the force applied by astronaut X as external force because the astronaut X is a part of the system. Since, there is no external force acting on the system, so the linear momentum of the system both before and after the force applied by astronaut X is zero.Therefore, the change in momentum of the two astronaut system is 0.How do we find linear momentum from kinetic energy?Kinetic energy = 1/2 × mass × velocity².So, 2 × mass × kinetic energy = ( mass × velocity )² = momentum²Or momentum = \(\sqrt{2 × mass × kinetic energy }\)What is the change in linear momentum of astronaut X?Before the force applied by astronaut X, astronaut X was constant with respect to astronaut Y. So its linear momentum is 0.After the application of force, the astronaut X has kinetic energy 100 J. So its momentum is \(\sqrt{2 × 50 × 100 }\) or 100 Kg·m/s.So, change in linear momentum of astronaut X is -100 Kg·m/s. Negative sign due to the motion of astronaut X along the opposite direction that of astronaut Y.What is the change in linear momentum of astronaut Y?Similarly, astronaut Y was at constant before the application of force. So, its linear momentum is 0.After the force applied by astronaut X, the astronaut Y has kinetic energy 50J. So, its linear momentum is \(\sqrt{2 × 100 × 50}\) or 100 Kg·m/s.So, change in linear momentum of astronaut Y is 100 Kg·m/s.Thus, we can conclude that option (c) is correct.
Learn more about linear momentum here:
https://brainly.com/question/7538238
#SPJ2
A vehicle is traveling at a velocity of 30 meters per second. Exactly 5 seconds later, its velocity has changed by a factor of 0.6. What was the vehicles average acceleration over that time period?
Answers
Answer:
-2.4 m/s²
Explanation:
avg accel = Δv/Δt
v-i = 30 m/s
v-f = (30 m/s)(0.60) = 18 m/s
Δt = 5.0 sec
avg accel = (18 m/s - 30 m/s) / 5.0 s = (- 12 m/s) / 5 s = -2.4 m/s²
negative sign means it's slowing down
A ball with an initial velocity of 12 m/s is rolling up a hill. The ball accelerates at a rate of -2.6 m/s/s.
Answers
Answer:
4.61 seconds
Explanation:
Given data
Initial velocity= 12m/s
acceleration= -2.6m/s^2
From the given data
we can find the time t
we know that
Acceleration= velocity/time
time= velocity/acceleration
time= 12/2.6
time= 4.61 seconds
What is the weight of a 5.5kg bowling ball
Answers
Answer:
2.205 pounds
Explanation:
5.5 kg is 2.205 lbs. hope this helps!
A pumpkin in launched from the ground at an angle of 40 degrees above the horizon with a total speed of 60 m/s. Ideally (with no air resistance) the pumpkin will land on the ground with a total speed of
A) 0 m/s
B) 20 m/s
C) 34.6 m/s
D) 60 m/s
Answers
Answer:
We can solve this problem using kinematic equations of motion, assuming that air resistance is negligible. We can break the initial velocity of the pumpkin into horizontal and vertical components:
v₀x = v₀ cosθ = 60 cos40° = 45.8 m/s
v₀y = v₀ sinθ = 60 sin40° = 38.4 m/s
Since there is no vertical acceleration after launch, we can use the following kinematic equation to find the time of flight:
Δy = v₀y t + 1/2 a t²
where Δy is the vertical displacement of the pumpkin, a is the acceleration due to gravity (-9.81 m/s²), and t is the time of flight. When the pumpkin lands on the ground, its vertical displacement is zero, so we can solve for t:
0 = v₀y t + 1/2 a t²
t = -2v₀y / a = -7.82 s
This negative value indicates that the pumpkin lands on the ground after 7.82 seconds, which makes physical sense. Now, we can use the horizontal velocity to find the horizontal distance traveled during the time of flight:
Δx = v₀x t = 45.8 m/s * 7.82 s = 358.2 m
Finally, we can find the total speed of the pumpkin at landing by using the Pythagorean theorem:
v² = v₀x² + v²y
v = sqrt[(v₀x)² + (v₀y)²] = sqrt[(45.8 m/s)² + (38.4 m/s)²] = 60.0 m/s (approximately)
Therefore, the answer is D) 60 m/s.
Explanation:
I have a circuit with a 200 V battery which produces 150 W of power. What is the
current in the circuit?
Answers
Explanation:
0.75
According to the formula, P=IV
150 = I×200
What is the magnitude and direction of electric field 0.10m on the left hand -4.2mc charge?
pasagot p plss
Answers
The direction of the electric field at the point is to the right, and its magnitude is 15.1 kN/C.
How did we get the value?To determine the magnitude and direction of the electric field at a point 0.10m to the left of a -4.2mc charge, we need to use Coulomb's Law:
Electric field (E) = (1/4πε₀) x (q/r²)
where q is the charge, r is the distance between the point and the charge, and ε₀ is the permittivity of free space (a constant).
Assuming that the -4.2mc charge is a point charge, we can convert its charge to coulombs:
q = -4.2mc = -4.2 x 10^-6 C
We also know that the distance between the point and the charge is:
r = 0.10m
Using Coulomb's Law, we can calculate the electric field at the point:
E = (1/4πε₀) x (q/r²)
= (9 x 10^9 N·m²/C²) x (-4.2 x 10^-6 C) / (0.10m)²
= -15.1 kN/C
The negative sign indicates that the electric field points towards the charge, i.e., to the right. Therefore, the direction of the electric field at the point is to the right, and its magnitude is 15.1 kN/C.
learn more about electric field: https://brainly.com/question/14372859
#SPJ1
Q.7. For a system with a transfer function of G(s)=- co² s² +2a+w² if the natural frequency is 0.5 and the damping ratio is 1.3, which of the following statements is correct regarding the unit step response of the system?
O A) Damped
O B) Undamped
O C) Underdamped
O D) Crittically Damped
O E) Overdamped
Answers
The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)
The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.
To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).
The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).
In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).
Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.
If co > co_critical, the system is considered overdamped (Option E).
If co = co_critical, the system is considered critically damped (Option D).
If co < co_critical, the system is considered underdamped (Option C).
Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.
To know more about damping ratios, refer here:
https://brainly.com/question/31463018#
#SPJ11
For a compressor with an intercooler, which of the following energy changes are usually neglected in the energy balance equation?a) workb) heat transferc) kinetic energyd) potential energy
Answers
For a compressor with an intercooler, the energy change that is usually neglected in the energy balance equation is:c) Kinetic energy
In the energy balance equation for a compressor with an intercooler, several energy changes are typically considered. These include work done by the compressor, heat transfer to or from the surroundings, and changes in potential energy.
However, kinetic energy is often neglected in the energy balance equation. This is because the change in kinetic energy of the fluid being compressed is typically small compared to the other energy changes involved.
The primary focus of the energy balance equation for a compressor with an intercooler is on the work done by the compressor and the heat transfer associated with the compression process. These factors play a significant role in determining the efficiency and performance of the compressor.
Neglecting kinetic energy simplifies the energy balance equation and does not significantly impact the overall accuracy of the analysis. This assumption is reasonable when the fluid velocities involved are relatively low, and the changes in kinetic energy can be considered negligible compared to the other energy changes in the system.
Therefore, kinetic energy is usually neglected in the energy balance equation for a compressor with an intercooler.
To know more about energy change visit:
brainly.com/question/2400395
#SPJ11
Determine whether each of these reactions occur through an sn1 , sn2 , e1, or e2 mechanism.
Answers
A. Tertiary alkyl halide with ethanol, heating and the product is an alkene: Because of the carbocation intermediate this is a E1 reaction.
B. Tertiary alkyl halide treated with potassium terbutoxide in tert butanol and give an alkene: This then, would be an E2 mechanism reaction.
C. A tertiary alkyl halide is treated with ethanol and heating to give an alkene: Because of the carbocation intermediate this is a E1 reaction.
A. According to the explanation, ethanol reacts with a tertiary alkyl halide (a carbon with all bonds other than hydrogen) while being heated. The resultant substance was an alkene.
As a result, the ethanol simply reacts with the electrophyle of the bromide alkyl, in this example, an atom of hydrogen, and the lone pairs then form a double bond to produce the alkene. In this instance, the halide departs the molecule and creates a carbocation intermediate. This reaction is an E1 because of the carbocation intermediate.
B. The only difference between this and example A is that we are working in a basic medium, thus either E2 or Sn2 is the mechanism at play. While the electrophyle of the alkyl halide is subtracted by the tert-butoxide, the lone pairs move down to the molecule, promoting the leaving of the halide to form the alkene. As a result, the ultimate product is also an alkene. A reaction via the E2 mechanism would then be this.
C. is the same as case A so it's a E1 reaction.
Learn more about E1 reaction here:
https://brainly.com/question/14568224
#SPJ4
in reference to dipoles, what change can be observed as lava cools to solid rock?
Answers
In hot lava, the dipoles change orientation rapidly. As the rock cools, the magnetic dipoles align with Earth’s magnetic field.
What is a dipole?A dipole is a separation of positive and negative electrical charges within a material. In solid rocks, the dipoles form as a result of the arrangement of positively charged ions, such as cations, and negatively charged ions, such as anions, within the crystal lattice structure.
As lava cools and solidifies into solid rock, a change in the distribution of electrical charge can be observed in the resulting rock. This change is due to the movement and rearrangement of ions in the rock as it cools, leading to the formation of dipoles.
As lava cools, the movement and rearrangement of ions within the liquid can result in a change in the distribution of electrical charge, leading to the formation of dipoles.
In summary, as lava cools and solidifies into solid rock, a change in the distribution of electrical charge can be observed in the form of the formation of dipoles due to the rearrangement of ions in the rock.
Learn more about the dipoles here:
https://brainly.com/question/14195217
#SPJ1
the definition of Force
Answers
Answer:
A force is a push or pull upon an object resulting from the object's interaction with another object.
Explanation:
Answer: force is a push or pull upon an object resulting from the object's interaction with another object.
Explanation: Hope this helps and it also on googIe