The electric potential in the xy -plane in a certain region of space is given by: where x and y are in meters and V is in volts. What is the magnitude of the y -component of the electric field at the point (-1,2) A. 0 V/m B. 4V/nm C. 18 V/m D. 24 V/m E. 30 V/m

Answers

Answer 1

The magnitude of the y-component of the electric field at the point (-1,2) is 16 V/m. Option D is the correct answer.

Use the formula for electric field to calculate the magnitude of the y-component of the electric field at the given point.

The formula for electric field is E = -∇V, where E is the electric field, V is the electric potential, and ∇ is the gradient operator. In two dimensions, the gradient operator is given by ∇ = (∂/∂x) i + (∂/∂y) j, where i and j are unit vectors in the x and y directions, respectively.

To find the y-component of the electric field at the point (-1,2), we need to calculate the partial derivative of V with respect to y, evaluate it at the given point, and then multiply by -1 to get the magnitude of the y-component of the electric field.

Taking the partial derivative of V with respect to y, we get:

(∂V/∂y) = -8xy - 4y³

Substituting x = -1 and y = 2, we get:

(∂V/∂y)|(-1,2) = -8(-1)(2) - 4(2)³ = 16 - 32 = -16 V/m

Multiplying by -1 to get the magnitude of the y-component of the electric field, we get:

|E_y| = |-∂V/∂y| = |-(-16)| = 16 V/m

Therefore, the magnitude of the y-component of the electric field at the point (-1,2) is 16 V/m, which corresponds to answer choice D.

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Related Questions

a car takes off from rest and covers a distance of 80m on a straight road in 10s. Calculate the magnitude of its acceleration​

Answers

Answer:

The magnitude of the acceleration is 1.6 m/s².

Explanation:

We can find the magnitude of the acceleration by using the following equation:

[tex] x_{f} = x_{0} + v_{0}t + \frac{1}{2}at^{2} [/tex]

Where:

[tex] x_{f}[/tex]: is the final position = 80 m

[tex] x_{0[/tex]: is the initial position = 0

[tex] v_{0}[/tex]: is the initial speed = 0 (it starts from rest)

a: is the acceleration =?

t: is the time = 10 s

Hence, the acceleration is:

[tex] a = \frac{2x_{f}}{t^{2}} = \frac{2*80 m}{(10 s)^{2}} = 1.6 m/s^{2} [/tex]

Therefore, the magnitude of the acceleration is 1.6 m/s².

I hope it helps you!          

Two photographers are competing for business in town. Andrea uses only film photography and Keira uses only digital photography. Keira claims that the digital technology is superior, and her advertisement claims that the images can be stored, shared, and copied more easily. They can even be sent long distances using a series of wave pulses to transmit the information. Andrea replies that digital images can be stolen and altered more easily.
Do the advantages outweigh the disadvantages, or do both sides have valid points? Support your answer with at least three reasons

Answers

There is no right or wrong answer, your teacher wants you to support your own answer with points. As long as the reasons make logical sense you are fine.

I think they both have valid points. Their replies are both true, but from a buyer's perspective who would you purchase services from? You would get different answers depending on who you ask.

If you choose to go old school, obviously you get an actual photo that can be stored physically. This means it is a memory that can be preserved, and it might feel more nostalgic being able to touch the photo.

On the other hand, a digitally stored photo can be altered (photoshop), but it is forever as long as the internet still exists. A physical photo would fade with time, which doesn't happen with a digital photo.

It is definitely easier to argue that digital photography has more advantages (they do, it is why nobody uses film anymore)

Points you can consider:

Can be transferred to the other side of the world instantly

Ability to make copies and print as many photos as you want

Can be stored on cloud/devices and be like that forever

Compare them with film photography to give a more solid response.

Which of the following would decrease the overall force felt between two charges the most?

Question 9 options:
A. Doubling the charge on the first object
B. Doubling the charge on the second object
C. Doubling the distance between the charges

If one charge is tripled and the other is cut in half, what happens to electric force?

Question 10 options:
A. It is decreased by 10 times the original force
B. It is increased by 1.5 times the original force
C. It is increased by 10 times the original force
D. It is decreased by 1.5 times the original force

Answers

Doubling the distance between the charges would decrease the overall force felt between two charges the most. The force felt between two charges is inversely proportional to the square of the distance.

What is Columb's law?

The force of attraction between two charges, according to Coulomb's law, is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

[tex]\rm F= \frac{Kq_1q_2}{r^2}[/tex]

The force felt between two charges is inversely proportional to the square of the distance.

Doubling the distance between the charges. The force felt between two charges is decreased 4 times the previous force.

Doubling the distance between the charges would decrease the overall force felt between two charges, the most.

Hence, option C is correct.

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example of unlile parallel forces​

Answers

Answer:

Explanation:

In mechanical engineering, a parallel force system is a situation in which two forces of equal magnitude act in the same direction within the same plane, with the counter force in the middle. An example of this is a see saw.

Forces which are parallel and acting a similar way are called like parallel forces. Like Parallel forces are the forces that are parallel to each other and have the same direction. Unlike parallel forces are the forces that parallel yet have directions inverse to each other.

when the parallel force system is a situation in which two forces of equal magnitude act in the same direction within the same plane, Two forces that are parallel can either be in the same direction or in opposite directions.

(hope this helps can i plz have brainlist :D hehe)

One of the largest planes ever to fly, and the largest to fly frequently, is
the Ukrainian-built Antonov An-124 Ruslan. Its wingspan is 73.2 m
and its length is 69.2 m. The gravitational potential energy associated
with the plane at an altitude of 1.45 km is 3.36 x 10^9 J. What is the airpanes mass

Show work pls :)

Answers

The gravitational potential energy associated with the plane is 2.36 x [tex]10^{5}[/tex] J

What is gravitational potential energy?

Gravitational potential energy is energy an object possesses because of its position in a gravitational field.

It is given by P.E = mgh

where m = mass

g= acceleration due to gravity

h = height of the object

Here,

h = 1.45km  = 1450 m

P.E = 3.36 x [tex]10^{9}[/tex] J

g = 9.8m/[tex]s^{2}[/tex]

therefore, m = P.E/ gh = (3.36 x [tex]10^{9}[/tex]s J)/ 9.8 x 1450

m = 2.36 x [tex]10^{5}[/tex]

Hence mass of the airplane is 2.36 x [tex]10^{5}[/tex]

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what is the unit scientist use to measure energy?

Answers

answer:

scientists use a measurement called BTU to measure energy

An element carries a_____charge

Answers

Answer:

The charge of an element is equal to the number of protons minus the number of electrons. The number of protons is equal to the atomic number of the element given in the periodic table. The number of electrons is equal to the atomic number minus the charge of the atom.

Explanation:

Answer:

hydrogen sometimes has a charge of zero or (less commonly) -1. Although noble gas atoms almost always carry a charge of zero, these elements do form compounds, which means they can gain or lose electrons and carry a charge.

Explanation:

What is one enThe law of conservation of energy states that energy can neither be created nor destroyed. What does “conservation” mean in this law?ergy transformation that is taking place in the photo?

Answers

Answer:

The preservation of a physical quantity during transformations or reactions.

Explanation:

File Is Attached To The Question

Answers

1. Graph A matches description 2 because the line is straight and travelling upwards at a constant speed (positive, constant slope).
2. Graph B matches description 4 because the line is flipped, travelling the opposite direction at a constant speed (represents the car turning around and driving the other way compared to graph A)
3. Graph C matches description 1 because the line is horizontal and is not moving (when the line is horizontal and remains constant, the object is not accelerating, it is stationary)
4. Graph D matches description 3 because of the way the line moves on the graph- accelerates and then starts to flow more horizontally, not accelerating as quickly anymore and remaining at a lower speed.

in root pass welding, that electrode we are going to use?​

Answers

Answer:

The root pass is made with a 5/32” (4.0mm) diameter electrode. A cellulosic electrode (E-XX10) is being used. The root pass is welded with reverse (DC+) polarity.

Explanation:

In root pass welding, that electrode we are going to use cellulosic electrode (E-XX10).

What is root pass welding?

Short arc welding is commonly used for root pass welding to prevent blow through and overheating at the weld joint. Because there is less drooping and suck back, short arc welding is also commonly used on root pass joints.

The first pass in any welding process that combines two pieces or members into one structure is referred to as the root pass.

Subsequent passes raise the weld depth to the desired thickness, resulting in the required strength. The first pass usually serves as the foundation for subsequent filler passes.

A 5/32" (4.0mm) diameter electrode is used for the root pass. A cellulosic electrode (E-XX10) is being used. The root pass is welded with reverse (DC+) polarity.

Thus, cellulosic electrode (E-XX10) for this.

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4. A group of students made a rocket and launched it vertically upwards with velocity
of 27ms^-1. What is the total distance travelled by the
rocket?

[Assume g=10ms^2]​

Answers

Answer:

Approximately [tex]72.9\; \rm m[/tex], assuming that the rocket had no propulsion onboard, and that air resistance on the rocket is negligible.

Explanation:

Initial velocity of this rocket: [tex]u = 27\; \rm m\cdot s^{-1}[/tex].

When the rocket is at its maximum height, the velocity of the rocket would be equal to [tex]0[/tex]. That is: [tex]v = 0\; \rm m \cdot s^{-1}[/tex].  

The acceleration of the rocket (because of gravity) is constantly downwards, with a value of [tex]a = -g = -10\; \rm m \cdot s^{-2}[/tex].

Let [tex]x[/tex] denote the distance that the rocket travelled from the launch site to the place where it attained maximum height. The following equation would relate [tex]x \![/tex] to [tex]u[/tex], [tex]v[/tex], and [tex]a[/tex]:

[tex]\displaystyle x = \frac{v^2 - u^2}{2\, a}[/tex].

Apply this equation to find the value of [tex]x[/tex]:

[tex]\begin{aligned} x &= \frac{v^2 - u^2}{2\, a} \\ &= \frac{\left(0\; \rm m\cdot s^{-1}\right)^{2} - \left(27\; \rm m \cdot s^{-1}\right)^{2}}{2 \times 10\; \rm m \cdot s^{-2}} = 36.45\; \rm m\end{aligned}[/tex].

In other words, the maximum height that this rocket attained would be [tex]36.45\; \rm m[/tex].

Again, assume that the air resistance on this rocket is negligible. The rocket would return to the ground along the same path, and would cover a total distance of [tex]2\times 36.45\; \rm m = 72.9\; \rm m[/tex].

What is potential energy?

Answers

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors

PlEaSe HeLp MeE
What is the gpe of a rock weighing 100N that is sitting on top pf a hill 300 m high?

Answers

Answer:

Gpe = 30000J

Explanation:

Given the following data;

Weight = 100N

Height = 300m

To find the gravitational potential energy (gpe);

Gravitational potential energy can be defined as an energy possessed by an object or body due to its position above the earth surface.

Mathematically, potential energy is given by the formula;

[tex] G.P.E = mgh[/tex]

Where,

G.P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Gpe = mgh

But weight = mg = 100N

Substituting into the equation, we have:

Gpe = 100*300

Gpe = 30000J

Please help with this !!!!!!

Answers

Answer:

answer is d from my guess

Wave Properties
With the help of their science teacher, Kaden and Mariam made a machine that can move a slinky back and forth. This motion
creates a fast-moving wave in the slinky. The image below is a model of a wave that is generated by the machine. The frequency of
the wave modeled in the image is 4 Hz.
3 m
What is the speed of the wave?
OA. 24 m/s
ОВ.
1.25 m/s
OC.
0.75 m/s
OD
12 m/s

Answers

the wave has a speed of 12 m/s.

Explanation:

Speed is directly proportional to wavelength and frequency. The wave has a frequency of 4 Hz. One Hertz (Hz) is equal to one cycle per second. The image shows that the wave has a wavelength of 3 m. Using the given speed and frequency, the wavelength can be calculated as shown below.

speed= wave length x frequency

speed = 3m x 4Hz

speed = 12m m/6

friction is a:
A.balance force
B.unbalance force
C.type of motion
D.type of direction

Answers

Answer:

c

Explanation:

becaz its motion and without motion u cant get friction

Answer:

A

Explanation:

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what is the wavelength of these waves???

Answers

Answer:

The wavelength is 6 meters.

Explanation:

A 5000ton frieight is moving at a speed of 10mph, next to it a 3250lb Ferrari at a speed of 250mph. Both hit the break, but who stops first?

Answers

Answer:

Ferrari would stop first.

Explanation:

The momentum of a moving body is given as:

momentum, P = mass of the body x its velocity

i. For the Freight,

mass = 5000 tons = 4535924 kg

speed = 10 mph  = 4.4704 m/s

P = mv

  = 4535924 x 4.4704

  = 20.28 x [tex]10^{6}[/tex]

P = 20.28 x [tex]10^{6}[/tex] kgm/s

ii. For the Ferrari,

mass = 3250 lb = 1474.175 kg

speed = 250 mph = 111.76 m/s

P = mv

   = 1474.175 x 111.76

   = 16.48 x [tex]10^{4}[/tex]

P = 16.48 x [tex]10^{4}[/tex] kgm/s

Comparing the momentum of the two objects, the Ferrari would stop fist when break is applied.

One scientist suggests that out of the different possible locations, they should design the model and build it at the equator recieves the most intense solar radiation. Which if the following is the most appropriate critique for the scientist's suggestion?
A. Earth's equator is not hot enough to simulate the Martian daytime.
B. The high mountain top gets the same amount of radiation as the equator, but with atmospheric conditions that are more similar to Mars.
C. The equator has deserts that are actually too dry compared to Mars.
D. The Antarctica has the same nighttime temperature as Mars, but with a similar amount of ice compared to the equator.​

Answers

Answer:

B.

I think.

Explanation:

Mars doesn't have that much of an atmosphere!

Have a great day!

If Steve races on the highway going south for 2430 meters in 40 seconds what is his velocity?

Answers

Answer:  60.75 m/s

Explanation:

2430 m / 40s = 60.75 m/s

Identifying Applications of Electromagnetic Waves
Quick
Check
Match the electromagnetic wave with its application.
ultraviolet waves
disruption of DNA production in bacteria
and viruses
gamma rays
destruction of cancer cells
X-rays
diagnosis of illnesses through medical
imaging

Answers

Answer:

gamma ray-destruction of cancer cells

Ultraviolet wave-disruption of DNA

X-ray-diagnosis of illnesses through medical

Explanation: on edg

Answer:

Here

Explanation:

2
Type the correct answer in the box
A car has a mass of 1,000 kilograms. The weight of the car is
nenors. Use g*98 Nike for granty
Reset
Ben

Answers

Answer:

Weight = 9800Newton

Explanation:

Given the following data;

Mass of car = 1000kg

Acceleration due to gravity = 9.8m/s²

To find the weight of the car;

Weight is given by the formula;

Weight = mass * acceleration due to gravity

Substituting into the equation, we have;

Weight = 1000*9.8

Weight = 9800Newton

How does an atom change if all of its electrons are removed?

Answers

Answer: If all the electrons of an atom are removed, it will change to become a positively charged ion called a cation.

Explanation:

Answer:

The atom becomes positively charged.

Explanation:


Usain Bolt runs at 200 meters in 20.0 seconds. How fast does he run? speed = distance / time

Answers

Answer:

22.369363 mi/h

Explanation:

Average Speed Calculation - suppose we want to calculate Usain Bolt's average speed during his world record winning 100 m sprint race in Berlin on August 16, 2009. What do we know?

We want to calculate Bolt's average speed

The distance was, of course, 100 meters

Bolt ran the distance in 9.58 seconds.

Bolt ran 11.42 yards per second during the race. Setting meters per second, you get 10.44 mp/s; miles per hour - 23.35 mph; kilometers per hour - 37.58 km/h; etc.

Travel Time Calculation - Suppose, you drove 21 miles with an average speed of 45 miles per hour. How long did you drive?

You traveled 28 minutes.

Distance Calculation - Let's calculate, how many miles you can travel, driving 2 hours and 30 minutes with an average speed of 55 miles per hour?

As you can see, the answer is 137.5 miles or 221.28 kilometers or 119.48 nautical miles, etc.

Assume, V - stands for average speed (velocity), T - stands for traveling time, and D - stands for traveled distance.

Average speed can be calculated by using the formula: V = D/T

The traveled distance can be calculated as D = V*T

Traveling time can be calculated using: T = D/V

Using the formulas remember about the units. For example, if the distance is given in meters and the time is given in seconds, the calculated average speed is given in meters per second. To convert it to other units of measurement, you can use our speed converter. If the distance is given in yards and speed is given in miles per hour, to get time in hours, you HAVE TO convert yards to miles or miles per hour to yards per hour first.

What causes a liquid to freeze? A. When particles speed up and get closer together. B. When particles stop moving. C. When particles slow down and get closer together. D. When particles speed up and get farther apart.​

Answers

Answer:The answer is C

Explanation:

An object spins with an angular momentum of 8.9 kg⋅m2 /s. A torque on the object causes it to slow to a stop in 5.2 s. What was the angular impulse on the object? What was the average torque on it? Analyze and Sketch the Problem

List Knowns and Unknowns Knowns Unknowns Li = ____________________ Lf = ________________ _____________ = ? ∆t = _________________ _____________ = ? SOLVE FOR THE UNKNOWNS a. Determine the angular impulse from the change in angular momentum b. Apply the impulse-momentum theorem to determine the Torque EVALUATE THE ANSWER Is the unit of torque correct? ______________________________________________________________ Is the magnitude of the torque realistic? _____________________________________________________

Answers

Answer:

Explanation:

Li = 8.9 kg m² /s , Lf = 0

Time = Δt = 5.2 s

Angular impulse = change in angular momentum = Li - Lf

= 8.9 - 0 = 8.9 kg.m²/s .

Average torque = angular impulse / time

= 8.9 / 5.2 = 1.711  kg m² / s²

Li = 8.9 kg m² /s , Lf = 0

Δt = 5.2 s

unit of torque = force x distance = mass x acceleration x distance

= kg . m /s² x m

= kg m² / s²

which two criteria are least important for engineers to consider when developing a process to produce an important chemical

Answers

Answer:

Chemical engineering is a multi-disciplinary branch of engineering that combines natural and experimental sciences such as chemistry and physics, along with life sciences such as biology, microbiology and biochemistryplus mathematics and economics to design, develop, produce, transform, transport, operate

Explanation:

Answer:

A. the process needs to produce significant amounts of ammonia

C. the process needs to be able to be performed safely

Explanation:

a p e x

A 9Ω resistance is cut into three equal parts and connected in parallel. Find the equivalent resistance of the combination.​

Answers

Answer:

the ans i 1 ohm

Explanation:

if i cut a resistor of 9 ohm into 3 equal parts then each resistor will have a resistance of 3 ohm and if they are in parallel combination the net resistance will be R

so 1/R=1/R1+1/R2+1/R3

     1/R=1/3+1/3+1/3

      R=1

A female skater with mass 45 kg and velocity 7 m/s leaps into her partner's arms. If her partner is has a mass of 60 kg and a forward velocity of 1.5 m/s, how fast are the two of them going after he catches her?

Please provide an explanation, random answers will be reported thank you.​

Answers

Explanation:

this is the answer for your question further if you have any doubts

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Is there a difference in how a black shirt or a white shirt affects our exposure to us radiation?

Answers

There is a difference of exposure to radiation to a black shirt and a white shirt but I think the difference is so insignificant that it’s not even considered different. The effects of radiation wearing a dark colored shirt on a sunny day to humans is probably not significantly different enough to warrant not wearing your favorite band tee out of fear you will get radiation poisoning.
But there is definitely a difference in heat. If you insist on wearing a black shirt and you want to avoid having a heat stroke then you should probably consider bringing water, maybe an extra shirt and sun screen if you have to be outside for more than 10-15 minutes.
Under the sun, the black shirt absorbs all wavelengths (more light). A white shirt reflects the visible light that hits it.
heat follows the same laws of conservation of light energy. This means light energy and heat cannot be created or destroyed. The light and heat has to go somewhere.
The light doesn’t cause the heat but they follow the same rules so instead of visually seeing the lack of light, you feel the heat energy that is being absorbed by your shirt.
you are exposed to the same amount of radiation wearing a black shirt as you are the white shirt. The difference is the “color” (because some people don’t consider black and white a color) and how light reacts to it.

I hope I was able to help!! This was a great question :)!!
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TRUE/FALSE. The salary of an athlete like Peyton Manning is in part a reward for his unique ability-something economists call economic rent. Question 7. 4 Find the number of 4element subsets taken from the set {1, 2, 3,. . . , 15},and such that they do not contain consecutive integers a chemical reaction is at equilibrium. compared to the rate of the forward reaction, the rate of the reverse reaction is? an amplifier has an open-circuit voltage gain of 120. with a 11 k load connected, the voltage gain is found to be only 50..a) Find the output resistance of the amplifier. Sometimes we see that a company announces that they have strong earnings which will lead to good dividend payments. Still, right after the announcement is made, the stock price falls.Question 5 options:This is inconsistent with our model for stock prices and the efficient market hypothesis.This must be because investors don't believe the news.This is consistent with our model for stock prices and the efficient market hypothesis if the earnings were strong, but not as strong as investors had expected.It is alway true that strong earnings lead to lower stock price, because investors believe that earnings now will be lower in the future. to refer to a single element of a hash, you use the $ character before the variable name, followed by the key associated with the value in ____. Your boss states that he's not sure if STIG compliance will require a Software Configuration Management Plan (SCM Plan). Please indicate if it is required, and if it has a specific STIG Category Level. It is recommended but not a STIG finding. It is a CAT-Ill finding if it does not exist. It is a CAT-I finding if it does not exist. It is a CAT-II finding if it does not exist. a company issues $1,000,000 6%, 10-year bonds on january 1, 2014 when the market rate is 5%. interest is paid annually on december 31. what are the proceeds from issuing the bonds (the debit to cash at issuance)? the _____ arranges main points according to opposing arguments and then both challenges them and bolsters your own. TRUE/FALSE. Communications can be initiated either from the private network or from the public network, as long as the private network is using a NAT mechanism seeing if a partner responds to a fictitious ""secret admirer"" letter reflects which type of secret test? Which of the following is used by sellers to eliminate any kind of liability that may be claimed by an injured buyer?A) AdvertisementB) DisclaimerC) WarrantyD) Warning 1 pts in the theory of personal control developed by heckhausen, wrosch, and schulz, changing ones goals is referred to as Homework: write Verilog design and test bench codes for a 4-bit incrementer (A circuit that adds one to a 4-bit binary) using the 4-bit adder/subtractor module from Lab 8. Test all possible cases on Edaplayground.com. Include the code and link in your report. module incrementer(A, B);input [3:0] A; output [3:0] B; ********** endmodule module test; endmodule gamma ray radiation falls in the wavelength region of 1.0010-16 to 1.0010-11 meters. what is the energy of gamma ray radiation that has a wavelength of 1.0010-16 m? What are the consequences of population bottleneck? 2. what awful things does juliet say she will do rather than marry paris? (she mentions 7 total things, 4 minimum for this answer) mark recounts nearly _______ miracles of jesus. Schedule of Activity Costs Quality Control Activities Activity Cost Process audits $50,600 Training of machine operators 29,400 Processing returned products 20,400 Scrap processing (disposal) 24,700 Rework 6,100 Preventative maintenance 30,900 Product design 42,400 Warranty work 6,800 Finished goods inspection 22,900 From the provided schedule of activity costs, determine the total activity cost. Oa. $101,800 Ob. $234,200 Oc. $283,382 O d. $151,000 Evaluate whether a business should made decisions solely on the basis of the profit made or weather it should also consider other factors.