There is a toggle switch on the front of the power supply unit which permits one to change the direction of magnetic field at the air bearing between "up" and "down." What is the direction of the current in each coil in the two situations?

Answer:

b.

Explanation:

Answer:

b

Explanation:

when moving charged bodies move there is changing magnetic flux linking in the particles and thus magnetic field is created between them

In the given application, the function myFunc() returns a Sample struct.

However, the behavior of this system is undefined because it tries to get admission to the members. An of the uninitialized Sample struct. The print () statement within myFunc() attempts to print the fee of s.A, that's uninitialized and might contain any random cost. This can result in unpredictable and potentially erroneous output.

Furthermore, the myFunc() function does now not assign any values to the participants of the Sample struct before returning it. Therefore, the values of s.A and s.B can also be uninitialized and can include arbitrary values.

In the principle() function, the back Sample struct from myFunc() is assigned to the same variable. However, considering the fact that myFunc() returns an uninitialized struct, the values of sam. A and Sam.B may also be uninitialized.

To make sure dependable and anticipated conduct, it's far vital to initialize the individuals of the Sample struct properly earlier than their usage of them.

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The correct question is:]

The image of a distant tree is virtual and very small when viewed in a curved mirror. the image appears to be 18.0 cm behind the mirror. kind of mirror is a concave mirror.

Based on the information provided, we can determine that the mirror in question is a concave mirror. This is because a concave mirror is curved inward and has a reflective surface that bulges inward, like the inside of a sphere.

Concave mirrors are known for their ability to converge light, meaning that they can bring parallel light rays together at a single point, known as the focal point.
In this case, we know that the image of the distant tree is virtual, meaning that it appears to be behind the mirror, rather than in front of it.

This is a characteristic of concave mirrors, as they can create virtual images when the object being reflected is located within the focal length of the mirror.

Additionally, we know that the image is very small, which is another indication that the mirror is concave.
Finally, we know that the image appears to be 18.0 cm behind the mirror.

This means that the image is located at the focal point of the mirror, which is a common location for virtual images to appear when using a concave mirror.

Overall, based on the information provided, we can confidently conclude that the mirror in question is a concave mirror.

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Answer:

True.

Explanation:

It is called negative acceleration or deceleration. It is the opposite of acceleration.

6 Ampere

the formula is

the formula is v = Ir

the formula is v = Ir hence formula of current is

the formula is v = Ir hence formula of current is v/r

the formula is v = Ir hence formula of current is v/r so, I = 120/20

the formula is v = Ir hence formula of current is v/r so, I = 120/20I = 6 ampere

The current in a resistance of 20 ohms and 120 V circuit is 6 Ampere.

We know that

\(Current = \frac{Voltage}{Resistance} \\\\= \frac{120}{20} \\\\= 6 A\)

Therefore we can conclude that the current in a resistance of 20 ohms and 120 V circuit is 6 Ampere.

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Answer:

C

Explanation:

Kieran had a greater average speed than Jevon. Let us go into more detail in the explanation below. To compare the average speeds of Kieran and Jevon, we need to find out the speed of each person.

We can use the formula speed = distance/time. Kieran ran 8 laps in 18 minutes, which means he ran 8/18 = 0.44 laps per minute. To find out Kieran's speed, we need to multiply this by the length of one lap. If we assume that the length of one lap is 400 meters, then Kieran's speed is:0.44 laps per minute × 400 meters per lap = 176 meters per minute Jevon ran 6 laps of the track, but we don't know how long it took him.

Therefore, we can't calculate his speed directly. However, we can still compare his speed to Kieran's by using ratios. If we assume that Jevon ran the same length of track as Kieran, then we can write the following equation: Kieran's speed/Jevon's speed = Jevon's time/Kieran's time.

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B) mostly empty space themselves. The atoms in a granite block are arranged in a crystal lattice structure, with the individual atoms spaced relatively far apart from each other.

This means that, despite the solid appearance of the block, the majority of the volume is actually empty space correctly arranged in a crystalline structure, which means that the atoms are arranged in a highly ordered pattern. While it may seem like the block is a solid mass, the reality is that the atoms themselves are separated by small amounts of space, which means that the block is mostly empty space. To understand this concept better, it's important to remember that atoms are not solid spheres, but rather they consist of a nucleus that is surrounded by a cloud of electrons. The electrons occupy a relatively large amount of space compared to the size of the nucleus. Additionally, there is also space between the atoms themselves. In the case of granite, which is a type of igneous rock, the atoms are arranged in a specific crystalline structure that gives the rock its strength and durability. However, even in this tightly packed structure, there is still space between the atoms, which means that the rock is mostly empty space.

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The average angular acceleration of a flywheel is \(2.1 rad/s^2\) . This value is calculated using the change in angular velocity and dividing it by the change in time.

To find the average angular acceleration of the flywheel, we need to calculate the change in angular velocity and divide it by the change in time. The initial angular velocity is given as 6.01 rotations/s counterclockwise, while the final angular velocity is 2.05 rotations/s clockwise.

To find the change in angular velocity, we can subtract the final angular velocity from the initial angular velocity:

\(Change in angular velocity = Final angular velocity - Initial angular velocity\)

= 2.05 rotations/s - (-6.01 rotations/s)

= 8.06 rotations/s

Next, division in change in angular velocity by the change in time:

\(Average angular acceleration = Change in angular velocity/Change in time\)

\(= 8.06 rotations/s / 24.1 s\\= 0.334 rotations/s^2\)

Since we need to express the answer in radians per second squared, we multiply the average angular acceleration by \(2\pi\)(since there are \(2\pi\)radians in one rotation):

Average angular acceleration = \(0.334 rotations/s^2 * 2\pi rad/rotation\)

\(=2.1 rad/s^2\) (rounded to one decimal place)

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Answer:

Kinetic energy

Explanation:

Answer:

i am answering the same question 3rd time

please find the answer in the images attached.

Four points A, B, C and D are shown in the figure.Consider a charged particle at these points To determine:The electric force exerted on a charged particle at point A compared to point B, point C and point D.Solution.

The electric force exerted on a charged particle is given by:F = qEwhere,q is the charge on the particleE is the electric field at the point where the particle is placed.

Part A:The electric force exerted on a charged particle at point A is given by:

F = qEA.The electric field at point A is directed along the negative direction of the y-axis and is given by:

E = 4 N/C F = qEAF = (1.0 × 10^-6 C)(4 N/C)F = 4 × 10^-6 N

Part B:The electric force exerted on a charged particle at point B is given by:F = qEB.

The electric field at point B is directed along the negative direction of the x-axis and is given by:

E = 3 N/CTherefore,F = qEBF = (1.0 × 10^-6 C)(3 N/C)F = 3 × 10^-6 N

Part C:The electric force exerted on a charged particle at point C is given by:

F = qEC.The electric field at point C is directed along the negative direction of the z-axis and is given by:

E = 5 N/C F = qECF = (1.0 × 10^-6 C)(5 N/C)F = 5 × 10^-6 N

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Interest in alternative energy and mineral sources does not involve sourcing from countries with different political and/or environmental stewardship philosophies. Rather, it pertains to the exploration of unconventional resources, such as geothermal, wind, and solar power.

It also involves the mining of lower concentration deposits and recovering resources from waste and recycling streams. However, recovering metallic mineral resources from asteroids is a relatively new concept that has gained interest in recent years.

Scientists and researchers are exploring ways to extract valuable minerals and resources from asteroids, but this does not fall under the umbrella of alternative energy and mineral sources.

Overall, the focus on alternative energy and mineral sources is about finding sustainable and environmentally-friendly solutions to meet our energy and resource needs in the future.

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Answer:

Measurement

Explanation:

Scientific research require observation and there are two types of observations, quantitative and qualitative observation

Collecting quantifiable data that is possible to be expressed in a number format is said to be a quantitative observation

Quantitative observation can also be described as observations that are defined by both words and numbers and they are therefore more useful than qualitative observations that involve only words

Quantitative observations involve expressions of variables that are quantifiable, that is material hat can be expressed in numbers.

Answer:

Measurement

Explanation:

if you’re doing ck12 it’s the right answer

The strength of two dams is compared by calculating their potential energy based on the height of the water they hold back. The Very Big Dam has greater potential energy than the Really Big Dam, making it stronger.

To determine which dam is stronger, we need to compare their potential energy due to the water they are holding back. The potential energy of the water is given by the formula:

PE = mgh

where PE is the potential energy, m is the mass of the water, g is the acceleration due to gravity, and h is the height of the water.

Since the dams are the same width, we can assume they have the same mass of water. Therefore, the potential energy depends only on the height of the water.

The height of the water in the Really Big Dam is 60 feet, and the lake extends back one-quarter of a mile or 1320 feet. Therefore, the potential energy of the water is:

PE1 = mgh = (mass of water) x g x h

\(PE1 = (1000 ft \times 1320 ft \times 60 ft) \times 62.4 \;lb/ft^3 \times 32.2\; ft/s^2\)

The height of the water in the Very Big Dam is 50 feet, and the lake extends back two miles, or 10560 feet. Therefore, the potential energy of the water is:

PE2 = mgh = (mass of water) x g x h

\(PE2 = (1000\; ft \times 10560\; ft \times 50 ft) \times 62.4 \;lb/ft^3 \times 32.2\; ft/s^2\)

Calculating the two potential energies, we find that PE2 is greater than PE1. Therefore, the Very Big Dam had to be constructed to be strongest.

In summary, to determine which dam is stronger, we compare its potential energy due to the water they are holding back. Since the dams have the same width, the potential energy depends only on the height of the water.

Calculations show that the potential energy of the water held by the Very Big Dam is greater than the Really Big Dam, making it the stronger of the two dams.

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There would be a total of 2 force vectors on a free-body diagram of an elevator suspended by a cable descending at constant velocity.

FBDs are valuable tools for describing the relative magnitude and direction of all forces operating on an object in a given condition. The meticulous drafting of a free-body diagram is the initial step in evaluating and describing most physical processes. In a free-body diagram, the size of the arrow denotes the magnitude of the force while the direction of the arrow denotes the direction in which the force acts.

A free-body diagram often includes the following elements:

The quantity of forces acting on a body is determined by the nature of the problem and the assumptions made. Air resistance and friction are frequently overlooked.

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Using lens makers formula

\(\\ \tt\longmapsto \dfrac{1}{v}+\dfrac{1}{u}=\dfrac{1}{f}\)

\(\\ \tt\longmapsto \dfrac{1}{v}=\dfrac{1}{f}-\dfrac{1}{u}\)

\(\\ \tt\longmapsto \dfrac{1}{v}=\dfrac{1}{-14}-\dfrac{1}{38}\)

\(\\ \tt\longmapsto \dfrac{1}{v}=\dfrac{-19-7}{266}\)

\(\\ \tt\longmapsto \dfrac{1}{v}=\dfrac{-26}{266}\)

\(\\ \tt\longmapsto v=\dfrac{266}{-26}\)

\(\\ \tt\longmapsto v=\dfrac{133}{-13}\)

\(\\ \tt\longmapsto v=-10.2cm\)

Answer:

The momentum of the soccer ball will be twice that of the baseball.

Explanation:

If an object of mass \(m\) travels with a velocity of \(v\), the momentum \(p\) of that object will be \(p = m\, v\). Thus, if velocity is fixed, momentum will be portional to the mass of the object.

The mass of the soccer ball is twice that of the baseball: \((300 / 150) = 2\). Thus, when moving at the same velocity, momentum of the soccer ball will be twice that of the baseball.

The driver of the van will hear a higher pitch due to his higher relative velocity.

The relative velocity of an object is the velocity of the object with respect to a stationary observer.

If a fire engine is moving at 40 m/s and sounding its horn. Also if  A car in front of the fire engine is moving at 30 m/s, and a van in front of the car is stationary.

The relative velocity of the stationary van is calculated as;

Vv = -40m/s - 30 m/s = - 70 m/s

The driver of the van will hear a higher pitch since his combined relative velocity of both cars is 70 m/s.

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Answer:

The dragster's velocity in mi/h when it crosses the finish line is 159.2 mi/h. This can be calculated by taking the distance traveled divided by the time taken, multiplied by 3600 (for conversion of seconds to hours).

Answer:

\(\huge\boxed{\sf P.E. = 240\ MJ}\)

\(\huge\boxed{\sf K.E. = 19.6\ MJ}\)

Explanation:

Given:

Mass = m = 200,000 kg

Vertical Distance = h = 120 m

Speed = v = 14 m/s

Acceleration due to gravity = g = 10 m/s²

Required:

1) Gravitational Potential Energy = P.E = ?

2) Kinetic Energy = K.E. = ?

Formula:

1) P.E. = mgh

2) K.E. = \(\displaystyle \frac{1}{2} mv^2\)

Solution:

1) P.E. = (200,000)(10)(120)

P.E. = 240,000,000 Joules

P.E. = 240 Mega Joules

P.E. = 240 MJ

2) K.E. = 1/2 (200000)(14)^2

K.E. = (100000)(196)

K.E. = 19,600,000 Joules

K.E. = 19.6 MJ

\(\rule[225]{225}{2}\)

Hope this helped!

Answer:

El avión recorrió 45 km en los 180 s.

Explanation:

La relación entre velocidad, distancia y tiempo se da de la siguiente manera;

\(Velocidad= \dfrac{Distancia}{Hora}\)

Por lo cual los parámetros dados son los siguientes;

Velocidad = 900 km/h = 250 m / s

Tiempo = 180 s

Estamos obligados a calcular la distancia recorrida

De la ecuación para la velocidad dada arriba, tenemos;

Distancia recorrida = Velocidad pf viaje × Tiempo de viaje

Distancia recorrida = 900 km/h × 180 s = 900

Distancia recorrida = 900 km/h × 1 h/60 min × 1 min/60 s × 180 s = 45 km

Por lo tanto, el avión viajó 45 km en 180 s.

Answer:

teleportation (artificial or natural over wormholes )

The angle between e and E is 90 degrees, the cosine of the angle is zero, which means that the scalar product is also zero. In other words, e•E = 0 when e is a unit vector directed along an equipotential line.

If e is a unit vector directed along an equipotential line, then it is perpendicular to the electric field E at every point along that line. This is because equipotential lines represent a constant electric potential, which means that there is no change in potential along that line. Since the electric field is the negative gradient of the potential, it is always perpendicular to the equipotential lines. Therefore, the scalar product e•E between the unit vector e and the electric field E is zero. The scalar product is defined as the product of the magnitudes of the two vectors and the cosine of the angle between them. Since the angle between e and E is 90 degrees, the cosine of the angle is zero, which means that the scalar product is also zero. In other words, e•E = 0 when e is a unit vector directed along an equipotential line.

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The change in internal energy of the system is 621.4 J.  

Internal energy of the system, we need to use the first law of thermodynamics, which states that the net work done on a system is equal to the heat added to the system minus the heat removed from the system.

First, we need to calculate the heat added to the system and the heat removed from the system. The change in internal energy is given by the following equation:

ΔU = Q + W

The heat added to the system is given by:

Q = m * ΔT

Since the system releases thermal energy to its surroundings, the change in temperature is equal to the temperature difference between the system and its surroundings:

ΔT =\(T_s - T_{su}\)

The work done on the system is given by:

W = P * ΔV

We know that the system has 52 cal of work done on it, so we can use the pressure and volume of the system to calculate the work done:

\(P_s = P_1 + P_2\)

We also know that the volume of the gas at the start and end of the process is 1.0 L and 1.2 L, respectively.

The change in internal energy of the system is given by:

ΔU = Q - W

ΔU = 839 J - 52 cal

(since 1 cal = 4.184 J)  

So, 52 cal = 52 * 4.184

=  217.568 J

ΔU = 839 J - 217.568 J

ΔU= 621.432 J or

ΔU= 621.4 J

Therefore, the change in internal energy of the system is 621.4 J.  

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Jimmy's total distance for the trip was 16 cm.

1. Jimmy initially starts 15 cm south.

2. He runs 12 cm north when he hears a bird. This cancels out part of his initial distance, as he is moving in the opposite direction.

  Net distance traveled so far: 15 cm - 12 cm = 3 cm south.

3. After the bird leaves, Jimmy walks 10 cm east for a drink of water.

  Net distance traveled so far: 3 cm south + 10 cm east = 3 cm south, 10 cm east.

4. Finally, Jimmy walks 6 cm west, 3 cm north, and 4 cm west.

  Net distance traveled: 3 cm south, 10 cm east - 6 cm west + 3 cm north - 4 cm west = 3 cm south, 3 cm north.

5. To calculate the total distance, we add up the absolute values of the distances traveled in each direction.

  Total distance = |3 cm south| + |3 cm north| = 3 cm + 3 cm = 6 cm.

6. However, we also need to consider the distance traveled east.

  Total distance = 6 cm + |10 cm east| = 6 cm + 10 cm = 16 cm.

7. Therefore, Jimmy's total distance for the trip is 16 cm.

Thus, Jimmy's total distance for the trip was 16 cm.

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Answer:

Your position would be -1

Explanation:

I think that's the answer you would need to collaborate more so i can give you a clear answer.

The angle of rotation for a regular hexagon based on a rotational symmetry is 60 degrees.

The interior angle of the regular hexagon below measures 60, and the hexagon has rotational symmetry.

The hexagon is rotated around the point of symmetry.

The point of symmetry for the hexagon is center of the hexagon.  

When the hexagon is rotated, transformation of rotation about a point takes place.

By property of rotation, about a particular point for a certain angle transforms the original image into an congruent image preserving shape, size and other properties

So, image will have the same angle as original.

Therefore, the angle of rotation for a regular hexagon based on a rotational symmetry is 60 degrees.

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Answer:

10 kg

Explanation:

The mass of the object is always constant and does not depend on the gravitational force of the Earth or the Moon.

Answer:

a because they are bigger and have more mass wich means that they will fall faster because there is more weight going downward...

Explanation:

Beluga

Answer:

Explanation:

It depends on whether this is a "trick" question.

The law of universal gravitation says that the attractive force between two objects depends directly on their masses and inversely to the square of distance in between them.

As the objects in A are bigger than B, they MAY have higher masses. So the force is larger in A.

But no information is given about object mass or density. The distance between objects in B is shorter. So if the objects in B have the same masses those in A, then the force is larger in B.