the magnetic flux through a coil of 10 turns, changes from 5.00 x 10^-4 wb to 5.0x10^-3 wb in 1.0x10^-2 s. find the induced emf in the coil
Answers
The induced electromotive force in the coil is approximately -45 volts (V).
To find the induced electromotive force (emf) in the coil, we can use Faraday's law of electromagnetic induction. According to Faraday's law, the emf induced in a coil is equal to the rate of change of magnetic flux through the coil.
In this case:
Number of turns (N) = 10
Initial magnetic flux (Φi) = 5.00 × 10⁻⁴ Wb
Final magnetic flux (Φf) = 5.0 × 10⁻³ Wb
Time (Δt) = 1.0 × 10⁻² s
The change in magnetic flux (ΔΦ) is given by:
ΔΦ = Φf - Φi
ΔΦ = (5.0 × 10⁻³ Wb) - (5.00 × 10⁻⁴ Wb)
ΔΦ = 4.5 × 10⁻³ Wb
The induced emf (ε) is given by:
ε = -N * (ΔΦ / Δt)
ε = -10 * (4.5 × 10⁻³ Wb) / (1.0 × 10⁻² s)
ε ≈ -45 V
The negative sign indicates that the direction of the induced current opposes the change in magnetic flux.
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Related Questions
A flow chart showing step by step how the body responds to a cold using the words B cells, helper T cells, macrophages, mucus, lymph, cytokines, receptor proteins, antibodies, memory cells and plasma cells
Answers
The body's response to a cold involves various immune cells and processes. Here is a simplified flow chart depicting the step-by-step response:
Initial exposure to a cold virus leads to its entry into the body through the respiratory system. The virus infects the cells lining the respiratory tract, triggering a response from macrophages, which are immune cells that engulf and destroy foreign particles.Macrophages present viral antigens (molecular markers) on their surface and release cytokines, signaling molecules that activate other immune cells.Helper T cells recognize the viral antigens presented by macrophages through their receptor proteins, and they become activated.Activated helper T cells stimulate B cells, another type of immune cell, to produce antibodies specific to the cold virus.B cells differentiate into plasma cells, which secrete large quantities of antibodies into the bloodstream.Antibodies circulate in the body and bind to the cold virus, neutralizing its ability to infect cells.Memory B cells are also generated during this process. These cells "remember" the specific cold virus, enabling a faster and stronger immune response in case of future infections.The antibodies help to remove the virus from the body by marking it for destruction by other immune cells, such as macrophages and natural killer cells. Mucus production increases in the respiratory tract, trapping the cold virus and facilitating its removal from the body. Lymph, a clear fluid containing immune cells and antibodies, carries away the virus and other debris from the infection site.This flow chart demonstrates the coordinated response of B cells, helper T cells, macrophages, mucus production, lymph, cytokines, receptor proteins, antibodies, memory cells, and plasma cells in combating a cold virus and eventually eliminating it from the body.
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Why can't you hear a sound in space ?
Answers
Answer:
As the vibrations of the particles reach your ear, your ear drum receives the vibrations which the brain then interprets as sound. In the vacuum of space, there are no (or very, very few) particles to vibrate, so sound cannot travel through this medium.
Explanation:
A student pulled a 100 kg cart up a ramp using a force of 150 N. By the time the cart reached the top of the ramp, it had gained 980 joules of potential energy. What happened to the work the student did by pulling the cart?
Answers
Answer:
Some of the work done on the cart became the cart’s potential energy, and some of the work was converted into heat by friction.
Explanation:
Here, some fraction of the work done by the student on the cart is converted to the potential energy of the cart it gained at the height.
What is work done ?Work done is the measure of the effectiveness of the force on making some displacement. It is the dot product of force and displacement. Work done like force is a vector quantity and have magnitude and direction.
When a force applied on a body results in a displacement, then it is said to be work is done on the body. The work done is numerically equal to the energy needed to displace the object.
Here, the force applied on the cart of 100 Kg results in a work done on the cart by pulling it to height. Where the energy equivalent to the work done is stored in the form its potential energy. The potential energy
p = mgh
Some fraction of work done is stored as this energy while the remaining probably lost into the surroundings.
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Very Important!!
If a person rapidly drinks a large amount of alcohol, it could lead to what is known as.
A. an alcohol-induced blackout.
B. an alcohol-inspired coma.
C. an alcohol-induced fainting spell.
Answers
Answer:
B) an alcohol-inspired coma
There are three types of alcohol one is primary second is secondary and third is tertiary. Therefore, the correct option is option B that is an alcohol-inspired coma.
What is alcohol?Alcohol is a chemical molecule with a functional group called hydroxyl linked to a saturated carbon atom. Alcohols classified as primary have just one alkyl group on which the carbon atom of the hydroxyl group (OH) is connected.
Secondary alcohols are those that have two alkyl groups on either side of the carbon atom of the hydroxyl group. In tertiary alcoholic group, the carbon that is bonded to hydroxyl group is bonded to three alkyl groups. If a person rapidly drinks a large amount of alcohol, it could lead to what is known as an alcohol-inspired coma.
Therefore, the correct option is option B.
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22.What factor determines in the direction of heat flow between objects?Select one:a. The difference in density of the objects. b. The difference in mass of the objects.c. The difference in temperature of the objects. d. The difference in size of the objects.
Answers
We will have that the factor that determines the direction of the heat flow between objects is the difference in temperature.
1) Calculate the ideal efficiency of a heat engine that takes in energy at 800 K and expels heat to a
reservoir at 300K ?
Answers
Answer:
Could you explain that more better?
Explanation:
8.54 Three identical balls of mass m are placed in the con-
figuration shown in the
figure. Find the location
(0, a)
of the center of mass.
50
(0,0)
(a,0)
Answers
The center of mass is the point located in an average position concerning the objects' positions and their masses. (a/3;a/3) is the location of the COM.
What si the center of mass?
The center of masses of a given system of particles or objects is the position under which all external forces are acting. Any uniform force acts on this point.
This position is the average position of all the components of the system concerning their masses. It can be placed in one, two or three dimensions according to the system.
Coordinate X of the center of masses is given by the following formula,
Xcom = Σ(Ximi) / Σmi
This is the adition (Σ) of each particle position on the X-axis (Xi) multiplied by their mass (mi), and the result divided by the summation of all masses -total mass-.
In the same way, coordinate Y of the center of masses is given by the following formula,
Ycom = Σ(Yimi) / Σmi
This is the adition (Σ) of each particle position on the Y-axis (Yi) multiplied by their mass (mi), and the result is divided by the summation of all masses.
The center of masses is located in the position (X, Y).
According to this framework, we can get the coordinates of the center of masses for this bidimensional system. Coordinates can be expressed in meters or centimeters (m or cm).
Data:
Particle ⇒ (X;Y)
Ball 1 ⇒ (0;a)Ball 2 ⇒ (0;0)Ball 3 ⇒ (a;0)Coordinate X ⇒ Xcom = Σ(Ximi) / Σmi
Xcom = (0m) + (0m) +(am) / m +m +m
Xcom = am / 3m
Xcom = a/3
Coordinate Y ⇒ Ycom = Σ(Yimi) / Σmi
Ycom = (am) + (0m) +(0m) / m +m +m
Ycom = am / 3m
Ycom = a/3
Coordinates of the center of masses, (X;Y) = (a/3 ; a/3)
(a/3 ; a/3) is the location of the center of mass in the proposed bidimensional system.
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anyone know the answer ?
Answers
Answer:
d
Explanation:
the answer of the above mentioned question is 2N to the left.
hope this helps!
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
A. 20 N
B. 19 N
C. 21 N
D. 40 N
Answers
Answer:
A.
Explanation:
A 5.00-kg sphere is moving at a speed of 4.00 m/s. An identical sphere is at rest. The two spheres collide. The first sphere moves off at a 60.0° angle to the left of its original path. The second sphere moves off in a direction 90.0° to the right of the first sphere’s final path. Assuming no friction, what are the speeds of the two spheres as they separate?
Answers
Answer:C
Explanation:
You should just have to do the math and will get you C
Is this right? Please help me ITS SOCIOLOGY
Answers
A regulation basketball has a 46 cm diameter and may be approximated as a thin spherical shell. How long will it take a basketball starting from rest to roll without slipping 4.4m down an incline that makes an angle of 15.4° with the horizontal?
The acceleration of gravity is 9.81m/s^2? Answer in units of s
Answers
Answer: 2.2 seconds!
Explanation:
The answer is approximately 2.2 seconds.
To find this, we can apply the equations of motion for a rolling sphere on an incline. Since the ball is starting from rest, its initial velocity is 0 m/s. We also know the angle of inclination (15.4°) and the distance the ball must travel (4.4m).
Using the equations of motion, we can solve for the acceleration of the ball, which is given by:
a = g*sin(θ)
where g is the acceleration due to gravity (9.81 m/s2) and θ is the angle of inclination (15.4°).
So, the acceleration of the ball is:
a = 9.81 * sin(15.4°) = 3.15 m/s2
Now we can use the equations of motion to solve for the time it will take for the ball to travel the 4.4m.
The equation for displacement is given by:
x = 1/2 * a * t^2
Where x is the displacement (4.4m in this case), a is the acceleration (3.15 m/s2) and t is the time.
Rearranging the equation to solve for t, we get:
t = sqrt(2x/a)
Substituting in the values for x and a, we get:
t = sqrt(2*4.4/3.15) = 2.2 s
Therefore, it will take the basketball approximately 2.2 seconds to roll 4.4m down the incline.
The latent image in a flat-panel detector is formed by which of the following?A. Trapped electronsB. Charged capacitorsC. Electrical resistanceD. Detector elements
Answers
The latent image in a flat-panel detector is formed by A. Trapped electrons.
The latent image in a flat-panel detector is formed by trapped electrons.
A flat-panel detector is a type of digital X-ray detector that is commonly used in medical imaging. It consists of an array of detector elements, also known as pixels, that convert X-rays into electrical signals. These electrical signals are then processed to produce a digital image.
When X-rays pass through the detector material, they interact with atoms in the material, causing the release of electrons. These electrons are then trapped in the detector material, creating a temporary electrical charge in the pixels. This charge distribution forms the latent image.
After the exposure is complete, the electrical charges in the pixels are read out and processed to produce the final image. This is done by applying a voltage to the pixels, which causes the trapped electrons to be released and flow to a readout circuit. The amount of charge that is read out is proportional to the X-ray dose that was absorbed by the pixel.
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4. Which of the three approaches to sociological investigation best fit the study: scientific
sociology, interpretive sociology, or critical sociology? Why? (4 points)
Answers
Scientific sociology is one of the three methods of sociological investigation that fits the topic the best.
The definition of scientific sociologyIt is possible to define sociology as the scientific study of society, which includes a complete analysis of both internal and external elements that can have an impact on social structures and interaction patterns.
It should be noted that while the sociology field is very broad and full of opportunities that are required to complete the study that is being discussed in the work, this study focuses on social interaction and culture, which help to determine the things that can be used to learn more about the society.
In conclusion, of the three methods of sociological inquiry, scientific sociology is the most effective for the study of society.
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Inside most ball-point pens is a small spring that compresses as the pen is pressed against the paper. If a force of 0.1 N compresses the pen's spring a distance of 0.005 m, what is the spring constant of the tiny spring?
Answers
Answer:
20 N/m
Explanation:
From the question,
The ball-point pen obays hook's law.
From hook's law,
F = ke............................ Equation 1
Where F = Force, k = spring constant, e = compression.
Make k the subject of the equation
k = F/e........................ Equation 2
Given: F = 0.1 N, e = 0.005 m.
Substitute these values into equation 2
k = 0.1/0.005
k = 20 N/m.
Hence the spring constant of the tiny spring is 20 N/m
a swimmer is in a 20m Olympic size pool ; he swims one pool length in 4s. Let's assume he swam at a constant velocity 1. calculate the average velocity 2. determine the equation of motion for the swimmer
Answers
We know that
• The length of the pool is 20 meters.
,• The time spent to swim the pool is 4 seconds.
,• The motion is constant.
Given that there's a constant motion, we can use the equation d = v*t, where d = 20m, and t = 4sec. Let's find the constant velocity.
\(\begin{gathered} d=vt \\ 20m=v\cdot4\sec \\ v=\frac{20m}{4\sec } \\ v=5\cdot\frac{m}{s} \end{gathered}\)The constant velocity is 5 m/s.On the other hand, the equation of motion would be d = v*t because the motion has a null acceleration.
The equation of motion is d = v*t.Which elements would likely have similar properties: two elements in the same group, or two elements in the same period?
Answers
Answer:
4
Explanation:
cause two and two have 4 elements
Which of these is the clearest sign that two populations are different species? (1 point)
O If two populations have significant genetic differences, they are different species.
O If two populations live very far from each other and are geographically separated, they are different species.
O If two populations produce only infertile children together, they are different species.
O If two populations are adapted to consume different foods, they are different species.
Answers
If two populations live very far from each other and are geographically separated, they are different species.
The main effect is that groups will diverge from one another when they are geographically isolated, both in terms of physical appearance and genetic variation.
Reproductive isolation results from these alterations, which might be brought on by genetic drift or natural selection.
The process by which new species emerge is known as speciation. It happens when populations within a species separate and experience reproductive isolation. A period of geographic separation causes groups from an ancestral population to diverge into distinct species in allopatric speciation.
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Just need to confirm an answer
A ball of mass 0.2 kg is kicked straight up from ground level. Ignoring air resistance, its gravitational potential energy as it reaches its maximum
height is 10 J. The initial speed with which the ball was kicked is most nearly
(A) 20 m/s (B) 10 m/s (C) 5 m/s (D) 1 m/s
Answers
Answer:
B
Explanation:
Remark
If, when it reaches its maximum height where the PE is the greatest, that the maximum energy is when the ball is first kicked. That would mean its starting energy is 10 Joules.
Formula
KE = 1/2 m v^2
Givens
KE = 10 J
m = 0.2 kg
v = ?
Solution
10 = 1/2 * 0.2 * v^2
10 * 2 = 0.2 * v^2
20 = 0.2 * v^2
20/0.2 = v^2
100 = v^2
v = 10 m/s
A pendulum makes 50 complete swings in 2 min 40 second . what is time period for 1 complete swing?
Answers
Answer:
3.2 seconds
Explanation:
50 swings = 2 mins 40 secs
= 50 swings = 2 x 60 + 40 secs
= 50 swings = 160 secs
= 1 swing = 160 / 50 secs
= 1 swing -= 3.2 secs
Ms. Johnson points a laser pointer from a certain angle toward the bottom of an empty aquarium. Her students see the reflection of its rays at the bottom of the aquarium.
A hand holding a laser pointer toward the bottom of an aquarium and the end of the beam is reflected at the bottom of the aquarium.
She then partially fills the aquarium and points the laser pointer from the same height and angle as before.
A laser pointer pointing toward water in an aquarium.
Predict whether or not the reflected spot of light will be in the same place as it was when she pointed the laser pointer into the empty aquarium. Explain your reasoning.
Answers
Answer:
The reflected spot will appear to be closer than when the aquarium was empty.
N1 sin θ1 = N2 sin θ2 N1 is in air and equals 1, N2 is greater than one
θ2 is measured from the vertical and the ray is less than θ1
The distance to spot is less so it appears closer
(Consider a spot directly below the pointer L1 = N2 L2)
If N2 = 4/3 then L2 would be 3/4 L1
Use the data table to answer to answer the question
Four friends raced in the 100-meter dash. How many of the friends ran faster than 5 meters per second?
Answers
Answer: the last three people ran faster than 5 meters per second
Explanation: moo
Helpppp helppp I will make you a brainlist!!
Answers
Answer:
The answer is that the evil psychic is merciless, see the explanation below:)
Explanation:
When a body is about to receive an impact or collision, two important factors should be taken into consideration; the mass of the body and the velocity with which it moves. The product of mass by velocity is defined as momentum.
Therefore:
\(P=m*v\\\)
where:
P = momentum [kg*m/s]
m = mass [kg]
v = velocity [m/s]
That is, is we are standing in front of the truck:
\(P_{truck}=1000*1\\P_{truck}=1000[kg*m/s]\)
Or in front of the meatball:
\(P_{meatball}=1*1000\\P_{meatball}=1000[kg*m/s]\)
How much does a 125.0 kg object weigh on earth
Answers
Answer:
1226.25 N
Explanation:
w = mg = 125 (9.81) = 1226.25 N
the distance from the point of no return to the intersection is the same no matter what speed you are going. true or false
Answers
It is FALSE to state that the distance from the point of no return to the intersection is the same no matter what speed you are going.
What is the Point of No Return in Traffic?If you are 100 feet or fewer from the junction, you have passed "the point of no return" and cannot safely halt before the intersection. As a result, it is preferable to proceed through the junction at your present, legal speed, but with extreme caution.
The point of no return is the moment at which you can no longer halt without entering that space, which is two seconds away. Time yourself in this scenario. Red, green, and flashing lights Yellow arrows: Each traffic signal turn is a dangerous 4-second danger zone. The riskiest is a left turn that requires you to stop and surrender.
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A 0.105 kg hockey puck is traveling at 12 m/s when it is struck by a stick. As a result, the puck travels at 15m/s in the opposite direction. If the contact between the stick and puck lasted 0.05 s, what was the force?
Answers
The force exerted on the hockey by the stick is -56.7 N.
What is force?Force is the product of mass and acceleration.
To calculate the force on the hockey, we use the formula below.
Formula:
F = m(v-u)/t........................ Equation 1Where:
F = Forcem = Mass of the hockeyv = Final velocityu = Initial velocityt = TimeFrom the question,
Given:
m = 0.105 kgv = -15 m/s (opposite direction)u = 12 m/st = 0.05 sSubstitute these values into equation 1
F = 0.105(-15-12)/0.05F = -56.7 NHence, the force on the hockey is -56.7 N.
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The force of gravity can also be referred to as the force of _____________.
Answers
Answer:
Gravitational.
Explanation:
In Earth, everything have a volume and mass, or downward force of gravity, which Earth's mass exerts on them.
which of the following is not a general characteristic of the four jovian planets in our solar system?
Answers
This is not a characteristic of the four Jovian planets in our solar system: That they are higher in average density than the terrestrial planets.
What are the characteristics of Jovian planets?Unlike the terrestrial planets of inner solar system (Mercury, Venus, Earth, and Mars), Jovian planets do not have solid surfaces.
They are also less dense than terrestrial planets and are composed of gases. They have many moons and their mass gives them more gravitational pull. They also have rings.
Characteristics of the Jovian Planet are : They all are gaseous bodies, they have ring systems around them and also they have a large number of natural satellites.
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The totally eclipsed moon glows coppery red because sunlight reaches the moon's
surface after passing through Earth's atmosphere. I
(1 Point)
True
False
Answers
Answer:true
Explanation:
red light is better able to pass completely through Earth's atmosphere and reach the moon
A utility firm is considering building a 50 -megawatt geothermal plant that generates electricity from naturally occurring underground heat. The binary geothermal system will cost $90 million to build and $10 million to operate per year. The geothermal plant is to last for 30 years. At that time, its expected salvage value will be about the same as the cost to remove the plant. The plant will be in operation for 70% of the year (or 70% of 8760 hours per year). If the firm's MARR is 14% per year, determine the cost per kilowatt-hour of generating electricity. Note that 1 megawatt =1000 kilowatt.
Answers
If the firm's MARR is 14% per year, the cost per kilowatt-hour of generating electricity is $1.571.
Given that a binary geothermal system will cost $90 million to build and $10 million to operate per year, then the present worth of the initial capital cost and annual cost can be found using the present worth factor as shown below:
PWF = 1-1/(1+i)n
where,
i = interest rate per period and
n = number of periods
PW of the initial capital cost = $90 million x PWF
(i=14%, n is 1)
= $90 million x 0.877
= $78.93 million
PW of the annual cost = $10 million x P(A/P, 14%, 30)
= $10 million x 9.209
= $92.09 million
Total PW = PW of the initial capital cost + PW of the annual cost
= $78.93 million + $92.09 million
= $171.02 million
Since the plant is to last for 30 years, the total energy output for the life of the project will be as follows:
Energy output = Capacity factor x Installed capacity x Number of years in operation x Number of hours per year
Energy output = 0.7 x 50 MW x 30 years x 8760 h/yr
Energy output = 108,540,000,000 Wh or 108,540,000 kWh
The cost per kilowatt-hour of generating electricity can then be found as follows:
Cost per kWh = Total PW/Total kWh
= $171.02 million/ (108,540,000 kWh x 1000)
= $1.571 per kWh
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