Answers
The electric field is zero at x = -4, x = 3, and x = 0. This is because the electric potential V(x) has a local maximum or minimum at these points, and the electric field is zero where the potential is constant (i.e., where its derivative is zero).
What is a Graph?A graph is a data structure used in computer science and mathematics to represent relationships between objects. It consists of a set of vertices (also called nodes) and a set of edges, which connect pairs of vertices.
Here's the table provided, with the values for the electric field added in the last column:
x V(x) E
-5 1 -0.2
-4 0 0
-3 -1 0.33
-2 -2 1
-1 -2 2
0 -2 infinity
1 -2 -2
2 -2 -1
3 0 0
4 2 -0.5
5 4 -0.8
Note that when x = 0, the electric field is infinity.
This happens because the electric potential V(x) reaches a minimum at x = 0, and the electric field is given by the derivative of the potential with respect to x.
Since the derivative of V(x) is zero at x = 0, the electric field diverges to infinity.
Also, note that the electric field is negative for x < 0 and positive for x > 0.
This is because the electric potential V(x) is decreasing for x < 0 and increasing for x > 0, so the electric field points from high potential to low potential, which is the opposite in the two regions.
Finally, note that the electric field is zero at x = -4, x = 3, and x = 0. This is because the electric potential V(x) has a local maximum or minimum at these points, and the electric field is zero where the potential is constant (i.e., where its derivative is zero).
We will now draw lines in the graph according to the data that we created (check below for graph)
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Related Questions
Examine the image and assess the relationship of the atoms shown by
Answers
The reactants in the given chemical equation are methane (CH₄) and oxygen (O₂), while the products are carbon dioxide (CO₂) and water (H₂O).
During a chemical reaction, the atoms of the reactants reorganize to form new compounds in the products. A chemical change is this atomic rearrangement.
What is a change in chemistry?A chemical change is the transformation of one or more substances into new ones with distinct chemical and physical properties. New substances are created when the original substances' atoms are rearranged and new chemical bonds are formed during a chemical change.
Typically, a transfer of energy in the form of heat, light, or sound occurs in conjunction with this kind of change. Reactions like combustion, oxidation, decomposition, and synthesis are all examples of chemical changes. Physical changes, on the other hand, involve alterations in a substance's physical properties without altering its chemical composition.
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If a runner is running at 100 meters per minute at the exact moment they cross the finish line of a race, it is the
instantaneous speed.
O True
O False
Answers
Answer:
Hello! Your answer would be, O False
Explanation:
Hope I helped! Brainiest plz!♥ Have a nice morning! Hope you make a 100%! -Abby
Answer:
False is the correct answer.
Explanation:
plz mark me as brainliest.
A stone is thrown horizontally with an initial speed of 10m/s from the edge of the cliff. A stop watch measures the stone’s trajectory with time from the top of the hill to the bottom to be 6.7s. What is the height of the cliff?
Answers
Answer:
Answer and steps in the pic
1. A 8.2 kg mass hanging from a spring scale is slowly lowered onto a vertical spring.
A) What does the spring scale read just before the mass touches the lower spring?
B) The scale reads 14 N when the lower spring has been compressed by 2.4 cm . What is the value of the spring constant for the lower spring?
C) At what compression length will the scale read zero?
Answers
The spring scale read just before the mass touches the lower spring is 80.36N, the spring constant for the lower spring is 2765N/m and at 2.9cm length the scale will read zero.
Given the mass of spring = 8.2kg
The force exerted for compressing of spring = 14N
The compression in spring = 2.4cm = 0.024m
(A.) Initially the spring scale reads only the weight of the mass = mg
W = 8.2 * 9.8 = 80.36N
(B) Let the value of spring constant = k
The net force exerted so that the scale reads(F') = 80.36N - 14 = 66.36N
We know that according to Hooke's law the force exerted on spring F = kx such that:
F' = kx then:
66.36 = k * 0.024
k = 66.36/0.024 = 2765N/m
(C) the compression where scale reads zero = x'
The scale reads zero when the restoring force equals to the weight of the mass then the scale reads zero such that:
x' = 80.36/2765 = 0.029m = 2.9cm
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What is metamarket ?
Answers
Answer:
metamarket (plural metamarkets) A group of businesses that offer products that are related from a consumer's perspective but which have no institutional connections. quotations . A market that trades in the medium of exchange of a lower-level market, such as money, derivatives, or credit. quotations.
Explanation:
The best examples of Meta Marketing can be selling family planning ideas or the idea of prohibition. ... Let's say a car selling in a Meta market would be a website, that sells cars but you will also find car parts there, add-ons for cars, colours for cars, mechanic's reviews, etc.
a anormal human eye has a focal length of about 2.3cm if you look at the tib of a pencil 55.3 cm from your eye haw far is the image from the lens of your eye ?
Answers
The image would be 53 cm from the lens of your eye.
What is Lens?
A lens is a transmissive optical tool that uses refraction to focus or disperse a light beam. A compound lens is made up of multiple simple lenses (elements), typically arranged along a common axis, as opposed to a simple lens, which is one solid piece of transparent material. Glass or plastic are used to make lenses, which are then polished or moulded into the desired shape. In contrast to a prism, which simply refracts light without focusing it, a lens can focus light to create an image. Lenses are also devices that focus or disperse waves as well as radiation other than visible light, such as explosive lenses, microwave lenses, particle lenses, and acoustic lenses.
Lenses are a common component of telescopes, binoculars, and cameras, among other imaging devices.
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How far would a horse that rides at 9.8 m/s travel in 9.8 minutes?
Answers
Answer:
distance = 96.04 m
Explanation:
velocity is distance over time when velocity is multiplied by time, the time in the numberator is canceled by the time in the denomiator leaving only distance.
distance = velocity * time
distance = 9.8[m/s] * 9.8[s]
distance = 9.8 * 9.8 [m]
Heather and Jerry are standing on a bridge 46 m
above a river. Heather throws a rock straight down with a speed of 14 m/s
. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time elapses between the first splash and the second splash?
Answers
The time elapsed between the first splash and the second splash is approximately 0.69 seconds.
To calculate this, we consider the motion of two rocks thrown simultaneously from a bridge. Heather throws a rock straight down with a speed of 14 m/s, while Jerry throws a rock straight up with the same speed.
We use the equation for displacement in uniformly accelerated motion: s = ut + (1/2)at^2.
For Heather's rock, which is thrown downwards, the initial velocity (u) is positive and the acceleration (a) due to gravity is negative (-9.8 m/s^2). The displacement (s) is the height of the bridge (46 m).
Solving the equation, we find two possible values for the time (t): t ≈ -4.91 s and t ≈ 1.91 s.
Since time cannot be negative in this context, we discard the negative value and consider t ≈ 1.91 s as the time it takes for Heather's rock to hit the water.
For Jerry's rock, thrown upwards, we use the same equation with the same initial velocity and acceleration. The displacement is also the height of the bridge, but negative.
Solving the equation, we find t ≈ -5.68 s and t ≈ 1.22 s. Again, we discard the negative value and consider t ≈ 1.22 s as the time it takes for Jerry's rock to reach its maximum height before falling back down.
To find the time difference between the first and second splash, we subtract t ≈ 1.91 s (Heather's rock) from t ≈ 1.22 s (Jerry's rock). This gives us a time difference of approximately 0.69 seconds.
Therefore, the time elapsed between the first splash and the second splash is approximately 0.69 seconds.
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When an MRI machine are use to capturing images of a person's body the produce extremely powerful magnetic fields what might be some issues that an MRI technician would need to work on around due to these magnetic fields
Answers
Answer:
Technique to reduce Noise, magnetic attraction and Twitching sensation
Explanation:
Changing magnetic fields cause loud knocking noise this can be overcome by ear protection.
Strong and Static magnetic fields attract magnetic objects that can be avoided by screening of people and objects before entering in that area.
Twitching Sensation due to nerve stimulation can be avoided by reducing the exposure to magnetic field.
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Which graph shows the change in velocity of an object in free fall?
Answers
Answer:
The graph of the velocity of an object in free fall would look like a straight line sloping downward. As the object falls, its velocity increases at a constant rate, so the graph of its velocity versus time will be a straight line with a negative slope. This is because acceleration due to gravity is a constant -9.8 meters per second squared, so the velocity of a free-falling object will increase by 9.8 meters per second every second.
Therefore, the graph that shows the change in velocity of an object in free fall is a straight line with a negative slope. Here is an example of such a graph:
Free Fall Velocity Graph
The particle with charge q is now released and given a quick push; as a result, it acquires speed v. Eventually, this particle ends up at the center of the original square and is momentarily at rest. If the mass of this particle is m , what was its initial speed v ?.
Answers
The given situation is illustrated below. A particle is released and given a quick push. As a result, it acquires a speed v. Eventually, this particle ends up at the center of the original square and is momentarily at rest. If the mass of this particle is m, the initial speed of the particle is \(\sqrt{(2qV/m).}\)
To solve the problem, we need to apply the law of conservation of energy, which states that energy can neither be created nor destroyed; it can only be transformed from one form to another.
Initial potential energy = Final kinetic energy
The initial potential energy of the particle is given by
U = qV
where V is the potential difference between the corner and the center of the square.
At the center of the square, the potential energy is zero.
The final kinetic energy of the particle is given by
K = (1/2) mv^2
where m is the mass of the particle and v is its final velocity.
Since the particle is momentarily at rest at the center of the square, its final kinetic energy is zero.
Therefore, we have
qV = (1/2) mv^2
Solving for v, we get
v = \(\sqrt{(2qV/m).}\)
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A solid sphere and a solid cylinder , both uniform and having the same mass and radius, are released from rest at the same height on a ramp. If they roll down the ramp without slipping, which one will have the lower forward velocity at the bottom of the ramp?
a. The solid sphere
b. The solid cylinder
c. Both will have the same forward velocity
Answers
Answer:
I (cylinder) = 1/2 M R^2
I (sphere) = 2/5 M R^2
The equation of motion shows
I * alpha = M g R sin theta = const
An increase in the moment of inertia will result in a smaller acceleration
The cylinder will have the smallest forward velocity because it will arrive at the bottom after the sphere
A gymnast on the uneven parallel bars is at rest, tipped at a 45∘ angle from the vertical. The distance from her hands to her feet is 1.8 m. If we model her body as having a uniform cross section and assume that her center of gravity is midway between her hands and her feet, what is her initial angular acceleration?
Answers
The initial angular acceleration is 5.78 rad/s^2.
Calculation of the angular acceleration;Since
A gymnast on the uneven parallel bars is at rest, tipped at a 45∘ angle from the vertical. The distance from her hands to her feet is 1.8 m.
So,
\(Torque \tau = r \times F\\\\ \tau = l\alpha\\\\so, r \times F = l\alpha\\\\mg\ cos\ 45 \times r = (1/3)mR^2 \times \alpha\\\\9.8\times cos\ 45 \times 0.9 = (1/3)\times (1.8)^2 \times \alpha\\\\\alpha = 5.78\ rad/s^2\)
hence, The initial angular acceleration is 5.78 rad/s^2.
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In the following drawing, in order for the lever to balance, _____ must be equal to F2D2.
Answers
In order for the lever to balance, F1D1 must be equal to F2D2.
To determine what must be equal to F2D2 in order for the lever to balance, we need to understand the principle of a lever and how it works.
A lever is a simple machine consisting of a rigid beam (in this case, represented by the drawing) that pivots around a fulcrum. The lever operates on the principle of torque, which is the rotational force produced when a force is applied at a distance from the fulcrum.
In the drawing, there are two forces acting on the lever: F1 and F2. F1 is applied at a distance D1 from the fulcrum, while F2 is applied at a distance D2 from the fulcrum. To balance the lever, the clockwise torque produced by F1 must be equal to the counterclockwise torque produced by F2.
The torque produced by a force is calculated by multiplying the force by the distance from the fulcrum. Mathematically, it can be represented as:
Torque = Force × Distance
For the lever to balance, the torques on both sides must be equal. Therefore, we have the equation:
F1 × D1 = F2 × D2
In other words, F2D2 must be equal to F1D1 for the lever to balance.
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a space traveller whose mass is 115kg leaves earth. what are his weight and mass;
a) On earth
b) Interplanetary space where there are no nearby planetary objects?
Answers
Answer:
On Earth: mass = 115 kg; weight = 1127 N
Interspace: mass = 115 kg; weight = 0 N
Explanation:
On Earth, his mass is 115 kg, and his weight is 115 kg * 9.8 m/s^2 = 1127 N.
On interspace , his mass is still 115 kg, and his weight is Zero Newtons = 0 N
(a) The mass of space traveler on Earth is 115 kg and its weight is 1127 N.
(b) The mass of traveler at interplanetary space is 115 kg and its weight is 0 N.
Given data:
The mass of space traveler outside the Earth is, m = 115 kg.
(a)
Since, the mass of any object is always remains constant. In other words, there is no way to destroy mass and hence mass of traveler on Earth will be same as 115 kg.
While the weight will be,
W = mg
W = 115(9.8)
W = 1127 N
Thus, we can conclude that the mass of space traveler on Earth is 115 kg and its weight is 1127 N.
(b)
On interspace , his mass is still 115 kg, and his weight is Zero Newtons. This is because the gravity at interplanetary space is zero.
That is,
W = mg
W = 115 (0)
W = 0 N
Thus, we can conclude that the mass of traveler at interplanetary space is 115 kg and its weight is 0 N.
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Creating a system to effectively solve problems can help you out in many ways what are some benefits you would like to see in your own life as you begin to apply the 4 step problem solving process you read about this week’s
Answers
Creating an effective system to solve problems is beneficial in various ways as it enables an individual to come up with a clear and concise solution to any problem or situation that may arise.
Some of the benefits that I would like to see in my own life as I begin to apply the 4-step problem-solving process are:Improved decision making skills- The 4-step problem-solving process will help me to make better decisions since it requires that I identify the problem, gather information, develop solutions, and implement the most suitable solution. This approach will help me to weigh my options carefully and make decisions based on logic rather than emotions.Improved communication skills- The process of problem-solving requires communication between team members. As I begin to apply the 4-step problem-solving process, I would like to develop better communication skills that will enable me to express my ideas clearly and succinctly.
This will be helpful not only in my personal life but also in my professional life where effective communication is a key to success.Improved critical thinking skills- The process of problem-solving requires critical thinking. By applying the 4-step problem-solving process, I would like to improve my critical thinking skills by learning how to analyze information, assess the problem, and develop solutions based on the available information.Improved productivity- The 4-step problem-solving process is a structured approach that helps to identify problems and develop solutions in a systematic manner. By applying this approach in my life, I would like to improve my productivity since I will be able to solve problems more efficiently and effectively.
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NEED ANSWER NOW dont really need it explained but need the right answer
Answers
Check Pic please, need help immediately
Answers
I did this already
Paola can flex her legs from a bent position through a distance of 22.3 cm . Paola leaves the ground when her legs are straight, at a speed of 4.20 m/s .
Calculate the magnitude of her acceleration, assuming that it is constant.
Answers
The acceleration can be calculated using the third free fall equation. Paola will accelerate throughout flight at a rate of 39.55 m/s2.
Acceleration is a quantity that is inversely related to time taken as well as having a direct link with velocity. A vector quantity, that is.
The third free fall equation can be used to calculate Paola's acceleration.
V^2 = U^2 + 2 as
where s is the distance travelled, an is the acceleration, V is the final velocity, U is the beginning velocity, and
Given the query, the values are: s = 22.3 cm (0.223 m), U = 4.20 m/s, and V = 0.
Poala defies gravity, so as a result, we have:
0 = (4.20)² - 2(a x 0.223)
= 17.64 - 0.446a
0.446a = 17.64
a = 17.64/0.446 = 39.551
a = 39.55 m/s²
Therefore Paola's acceleration is
39.55 m/s²
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In which graph is acceleration the slope?
A. Distance versus time
B. Acceleration versus time
C. Velocity versus time
D. Position Versus time
(no graph or anything else was given, this is the entire question)
Answers
Velocity versus time is the graph acceleration of the slope.
A distance-time graph shows the distance an object has traveled over time.
Results for time versus distance are displayed as a straight-line graph. The distance is shown on the Y-axis. A time plot is shown on the X-axis. On the graph with the steepest slope, velocity changes happen more quickly.
It accelerates the most quickly. The slope of a velocity graph reveals an object's acceleration. As a result, the acceleration of the item at a given instant is determined by the slope's value at that precise moment.
A sloping line on a distance-time graph denotes a moving object. On a distance-time graph, the object's speed is equal to the gradient or slope of the line.
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A 75.0 kg man pushes on a 500,000 kg wall for 250 s but it does not move.
a. How much work does he do on the wall? ____________
b. How much energy is used?__________
c. How much power is exerted?____________
Answers
Since no work is done, the power exerted is zero. Therefore, the man exerts no power on the wall.
What is force?In physics, force is defined as any action that can change the motion of an object or cause an object to accelerate. Force is a vector quantity, meaning that it has both magnitude (size or strength) and direction. The unit of force in the International System of Units (SI) is the Newton (N), which is defined as the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared (1 N = 1 kg × 1 m/s^2). Force can be measured using a variety of instruments, such as spring scales, strain gauges, or force plates. Some common types of forces include gravitational force, electromagnetic force, frictional force, and normal force. The study of forces and their effects on the motion of objects is known as mechanics and is a fundamental concept in physics.
Here,
a. The man does not do any work on the wall because the wall does not move. Work is only done when there is a displacement in the direction of the force applied.
b. Since no work is done, no energy is used or transferred.
c. The power exerted by the man can be calculated using the formula:
Power = Work / Time
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EARTH AND SPACE SCIENCE!
All of the following are Kepler's laws of planetary motion EXCEPT?
a.) Planets follow elliptical orbits with the sun at one of its foci
b.) The period of a planet (time it takes to go around the sun) is related to its distance from its Sun
c.) The period of a planet(time it takes to go around the sun) is related to the planet's mass
Answers
C. The period of a planet (time it takes to go around the sun) is not related to its mass.
The first law states that the planets follow elliptical orbits with the sun at one of its foci, the second law states that an imaginary line drawn from the sun to a planet sweeps out equal areas in equal times, and the third law states that the square of the period of a planet is directly proportional to the cube of its average distance from the sun. Since the period of a planet is not related to its mass, answer C is not one of Kepler's laws of planetary motion.
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HELP ASAP
If you start at house 10 and follow the vectors shown on the left, which house
will you end up at?
A. House 6
B. House 8
C. House 7
D. House 9
Answers
In the 4.6 billion year history of the Earth, how many times have continents of our planet gone through major shifts if these shifts happen on average every 395 million years?
Answers
Continents have undergone major shifts around 12 times.
To calculate the number of times continents have gone through major shifts in the 4.6 billion year history of the Earth, we can divide the total time span by the average duration between shifts.
Total time span = 4.6 billion years
Average duration between shifts = 395 million years
To convert the total time span to years, we multiply 4.6 billion by 1 billion (1 billion = 1,000 million).
Total time span in years = 4.6 billion years × 1 billion = 4.6 × 10^9 years
Now we can calculate the number of shifts by dividing the total time span by the average duration between shifts:
Number of shifts = Total time span / Average duration between shifts
= (4.6 × 10^9 years) / (395 million years)
≈ 11.65
Therefore, continents of our planet have gone through major shifts approximately 11.65 times in the 4.6 billion year history of the Earth. Since we cannot have a fraction of a shift, we can round the result to the nearest whole number. Thus, continents have undergone major shifts around 12 times.
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Emily wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stopped. She used Duracell, Energizer, Kroger brand, and EverReady. Iv,Dv, Control, consistent
Answers
Answer:
This question is asking to identify the following variables:
Independent variable (IV): Battery
Dependent variable (DV): Time the clock stopped
Constant: Same clock
Control: No stated control
Explanation:
The independent variable in an experiment is the variable that is subject to manipulation or change by the experimenter. In this experiment, the independent variable is the BATTERIES (Duracell, Energizer, Kroger brand, EverReady).
The dependent variable is the variable that responds to the changes made to the independent variable. It is the variable that the experimenter measures. In this case, the dependent variable is the TIME IT TAKES FOR THE CLOCK TO STOP.
Constants or control variable is the variable that the experimenter keeps constant or unchanged for all groups throughout the experiment in order not to influence the outcome of the experiment. The constant in this case is the SAME CLOCK USED.
Control group is the group that does not receive the experimental treatment or independent variable in an experiment. In this case, all groups received a different kind of battery.
Question 5 of 10
Two billiard balls, each with a mass of 0.21 kg, collide with each other on a
pool table. Before the collision, one ball is moving north at 1.7 m/s and the
other ball is moving south at 2.6 m/s. What is the momentum of this system
after the collision?
A. 0.19 kg-m/s south
B. 0.19 kg-m/s north
O C. 0.90 kg-m/s north
D. 0.90 kg-m/s south
Answers
The momentum of this system after the collision (final momentum) is 0.90 kg m/s towards the south direction. Thus, the correct option is D.
What is Momentum?Momentum is the mass in motion. All objects have mass, so if an object is moving, then it has momentum. The amount of momentum which an object has is dependent upon two variables which are how much stuff is moving and how fast the stuff is moving.
Momentum of the system after the collision can be calculated through the law of conservation of momentum. The final momentum of the system is equal to the initial momentum of the system.
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
m₁ = m₂ = 0.21kg
u₁ = 1.7m/s
u₂ = 2.6m/s
0.21 × 1.7 + 0.21 × 2.6 = 0.357 + 0.546
Final momentum of the system = 0.903 kg m/s towards south.
Therefore, the correct option is D.
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Answer:
A. 0.19 kg m/s south
Explanation:
explain why sound wave travel faster in liquid than gas
Answers
Answer:
Because gas contains free molecules but not liquid.
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5. How much heat is needed to warm .052 kg of gold from 30°C to 120°C? Note: Gold has a specific heat of 136
J/kg °C
Answers
Answer:
Q = 636.48 J
Explanation:
Given that,
The mass of gold, m = 0.052 kg
The temperature increase from 30°C to 120°C.
The specific heat of gold is 136 J/kg °C.
We need to find the heat needed to warm the gold. The formula for heat needed is given by :
\(Q=mc\Delta T\\\\Q=0.052\times 136\times (120-30)\\\\Q=636.48\ J\)
So, 636.48 J of heat is needed to warm gold.
Help me !!!
What is the velocity of a ball with
a momentum of -4.5 kg*m/s and a
mass of 0.45 kg?
Answers
Answer:−4.05
Explanation:
An 1,810 W toaster, a 1,340 W electric frying pan, and an 85 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (The three devices are in parallel when plugged into the same socket.)(a) What current (in A) is drawn by each device?Itoaster= AIpan= AIlamp= A
Answers
ANSWER
• I(toaster) = 15.08 A
,• I(pan) = 11.17 A
,• I(lamp) = 0.71 A
EXPLANATION
Given:
• The toaster's power, P(toaster) = 1810 W
,• The frying pan's power, P(pan) = 1340 W
,• The lamp's power, P(lamp) = 85 W
,• The total current supported by the circuit, I = 15 A
,• The voltage of the circuit, V = 120 V
Find:
• The current across each device
Power is the product of current and voltage,
\(P=I\cdot V\)We know that all three devices are connected in parallel, which means that they all have the same voltage, 120 V.
Solving the equation above for I,
\(I=\frac{P}{V}\)So, for each device,
\(I_{toaster}=\frac{P_{toaster}}{V}=\frac{1810W}{120V}\approx15.08A\)\(I_{pan}=\frac{P_{pan}}{V}=\frac{1340W}{120V}\approx11.17A\)\(I_{lamp}=\frac{P_{lamp}}{V}=\frac{85W}{120V}\approx0.71A\)Hence, the current drawn by each device is:
• I(toaster) = 15.08 A
,• I(pan) = 11.17 A
,• I(lamp) = 0.71 A