earth's magnetic poles earth's magnetic poles are fixed. are migrating approximately 55 to 60 km (34 to 37 mi) per year. are perfectly aligned with earth's axis. are misaligned from earth's axis by 23.5 degrees.

Answer:

30 m

Explanation:

Potential energy = kinetic energy + rotational energy

PE = KE + RE

mgh = ½ mv² + ½ Iω²

For a disk, I = ½ mr².  For rolling without slipping, ω = v/r.

mgh = ½ mv² + ½ (½ mr²) (v/r)²

mgh = ½ mv² + ¼ m v²

mgh = ¾ m v²

gh = ¾ v²

h = 3v² / (4g)

h = 3 (20 m/s)² / (4 × 10 m/s²)

h = 30 m

The factor by which the displacement will change is 3.0, and the answer is option b.

The displacement of a spring's lower end is directly proportional to the weight suspended from it. This relationship is expressed by Hooke's law, which states that the displacement (x) of a spring is equal to the force (F) applied to it divided by its spring constant (k), or x = F/k.
In this scenario, we are tripling the weight suspended vertically from a coil spring. According to Hooke's law, if the weight is tripled, the force applied to the spring will also triple. Since the displacement is directly proportional to the force, we can say that the displacement will also triple.
Therefore, the factor by which the displacement will change is 3.0, and the answer is option b.

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The fundamental pitch of an organ pipe is determined by the length of the pipe and the velocity of sound in the material that the pipe is made of.

For a pipe with one open end and one closed end, the fundamental pitch (f) can be calculated using the formula:

f = v / (4 * L)

where v is the velocity of sound in the material, and L is the length of the pipe.

For a 34.3 cm long pipe, the fundamental pitch can be calculated as follows:

f = v / (4 * 0.343 m)

Note that the length of the pipe needs to be converted from centimeters to meters.

The velocity of sound in air at room temperature is approximately 343 m/s, but this value can vary slightly based on the temperature and pressure of the air. The velocity of sound in other materials will be different.

Once the velocity of sound in the material has been determined, the fundamental pitch can be calculated by substituting this value into the formula.

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In order to be a vector quantity, the quantity needs to have a direction, besides its magnitude.

For example, temperature has no direction, only magnitude, but velocity has direction and magnitude.

From these options, the only one that is a vector quantity is displacement, therefore the correct option is A.

Answer:

The refractive index of a material is a measure of how much the speed of light is reduced when it passes through that material.

The formula for calculating the refractive index of a material is:

n = c/v

where n is the refractive index, c is the speed of light in a vacuum (approximately 3 x 10^8 m/s), and v is the speed of light in the material.

When light travels from one material to another and refracts at the boundary, the angle of refraction and the refractive index of the first material and the refractive index of the second material determine the way in which the light bends.

If light passes at an angle into a material, it will bend towards the normal (the perpendicular line) if the refractive index of the second material is greater than the refractive index of the first material. If the refractive index of the second material is less than the refractive index of the first material, the light will bend away from the normal.

The below diagram shows the path of light as it passes from air into a denser material (in this case, glass). The angle of refraction is determined by the refractive indices of the two materials and the angle of incidence.

The de Broglie wavelength of a particle is given by the equation:

λ = h/p

where λ is the de Broglie wavelength, h is Planck's constant (approximately 6.626 x 10^-34 J s), and p is the momentum of the particle.

To calculate the momentum of a particle, use the equation:

p = mv

where p is the momentum, m is the mass of the particle, and v is its velocity.

To calculate the associated de Broglie wavelength of electrons in an electron beam accelerated through a potential difference (pd) of 4000 V, use the equation:

λ = h/√(2meV)

where λ is the de Broglie wavelength, h is Planck's constant, me is the mass of an electron (approximately 9.11 x 10^-31 kg), and V is the potential difference.

To calculate the energy of an alpha particle with a de Broglie wavelength of 5.7 x 10^-15 m, use the equation:

E = hc/λ

where E is the energy of the particle, h is Planck's constant, c is the speed of light, and λ is the de Broglie wavelength. The energy can then be converted to MeV (million electron volts) by dividing by 1.6 x 10^-13 J/MeV.

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Answer:

Natalia is correct.

Explanation:

i got it right when it said natalia

Answer: kinetic

Explanation: Just took a test and it was right

A collection of a fixed number of elements (called components) arranged in n dimensions ( n >= 1) is called a(n) n- dimensional array

an array of dimensions gives Information about the material composition for each point in the heterogeneous part is stored in N.

Similar to a one-dimensional array, a two-dimensional array is represented graphically as a grid (or table) with rows and columns.

A big gathering of objects or people is referred to as a "array," especially one that is eye-catching, inspires admiration, or has been arranged in a particular way: The spread of food on the table was magnificent. They were seated in front of numerous microphones and cameras. Related words and phrases are part of the SMART Vocabulary. Things in groups and collections

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Answer:

a= g = - 9.81 m/s2.

The following equations will be helpful:

a = (vf - vo)/t d = vot + 1/2 at2 vf2 = vo2 + 2ad

When you substitute the specific acceleration due to gravity (g), the equations are as follows:

g = (vf - vo)/t d = vot + 1/2 gt2 vf2 = vo2 + 2gd

If the object is dropped from rest, the initial velocity ("vi") is zero. This further simplifies the equations to these:

g = vf /t d = 1/2 gt2 vf2 = 2gd

The sign convention that we will use for direction is this: "down" is the negative direction. If you are given a velocity such as -5.0 m/s, we will assume that the direction of the velocity vector is down. Also if you are told that an object falls with a velocity of 5.0 m/s, you would substitute -5.0 m/s in your equations. The sign convention would also apply to the acceleration due to gravity as shown above. The direction of the acceleration vector is down (-9.81 m/s2) because the gravitational force causing the acceleration is directed downward.

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Answer:

Average speed = 1.3 m/s

Explanation:

Given that a student walks 160 m in 150 s. The student stops for 30 s and then walka 210 m farther in 140 s.

Neglect the time the student stops.

The total distance covered will be

Distance = 160 + 210

Distance = 370 m

The total time of the whole distance journey will be

Time = 150 + 140 = 290 s

The formula for speed is

Speed = distance/time

Speed = 370/290

Speed = 1.276 m/s

Therefore, the average speed is 1.3 m/s approximately

Answer:

the answer is C

Explanation:

i did this

Basic logic NAND, NOR, or NOT gates are the building blocks of combinational logic circuits, which are then "combined" or joined together to create more complex switching circuits.

Thus, The foundational elements of combinational logic circuits are these logic gates.

A decoder is an example of a combinational circuit since it splits the binary data at its input into several different output lines, each of which generates an equivalent decimal code at the output and building block.

The NAND and NOR gates are referred to be "universal" gates and can be used to create any combinational logic circuit, regardless of how basic or complex it is.

Thus, Basic logic NAND, NOR, or NOT gates are the building blocks of combinational logic circuits, which are then "combined" or joined together to create more complex switching circuits.

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Answer:2n

Explanation:10/5=2

Answer:

Find answers below.

Explanation:

1. Radiant: the energy of light.

2. Light: makes it possible to see things.

3. Sun: a source of light. This source of light is referred to as solar energy and it's renewable source of energy.

4. Crest: top of wave. Thus, it's typically the highest part of an electromagnetic wave.

5. Trough: bottom of wave. Thus, it's typically the lowest part of an electromagnetic wave.

6. Wavelength: distance from one point on one wave to the same point on the next wave.

7. Infrared light: it has longer wavelengths than visible light.

8. X-rays: shorter wavelengths than visible light.

Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.

An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.

The acceleration of an object traveling at terminal velocity is 0 m/s/s since it is not accelerating.

Terminal velocity is the maximum speed achieved by an object as it falls through a fluid such as air or water. The object's weight, drag coefficient, and surface area all affect its terminal velocity. Terminal velocity increases as an object's weight increases and its drag coefficient and surface area decrease. Terminal velocity is greatest when an object reaches its equilibrium between the force of gravity and the fluid's drag force. For example, a human skydiver has a terminal velocity of about 120 mph.

Terminal velocity is the maximum velocity an object can reach and remain at a constant speed as it is subjected to a constant force such as gravity. If the object is subject to any additional force, it will accelerate.

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When the two blocks touch each other, both blocks will have the same temperature and it will be closer to 0 degrees Celsius than 84 degrees Celsius.

option A is the correct answer.

The final temperature of the blocks or the equilibrium temperature of the blocks when they touch each other is determined by applying the principle of conservation of energy as follows;

Heat lost by the smaller block = Heat gained by the bigger block

m₁c(T₁ -T) = m₂c(T - T₂)

where;

m₁(T₁ -T) = m₂(T - T₂)

5 x (84 - T) = 50(T - 0)

420 - 5T = 50T

420 = 55T

T = 420/55

T = 7.64⁰C

Thus, we can conclude that both blocks will have the same temperature which will be closer to 0 degrees Celsius than 84 degrees Celsius.

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Two types of errors that can occur when measuring the length of an object are systematic errors and random errors. Systematic errors can be minimized by calibrating measuring instruments and ensuring proper alignment. Random errors can be reduced by taking multiple measurements and calculating the average value.

There are two types of errors that can occur when measuring the length of an object: systematic errors and random errors.
1. Systematic errors: These errors occur consistently and affect all measurements in the same way. They are usually caused by equipment calibration issues or incorrect measurement techniques. Systematic errors can be minimized by:
- Calibrating the measuring instrument regularly to ensure accurate readings.
- Using the appropriate measuring technique, such as aligning the object properly with the measuring device.
- Taking multiple measurements and averaging the results to reduce the impact of any systematic error.
2. Random errors: These errors are unpredictable and can occur due to various factors, such as human error or environmental conditions. Random errors can be minimized by:
- Taking multiple measurements and calculating the average, which helps to reduce the effect of random errors.
- Using a measuring instrument with high precision, as it reduces the likelihood of random errors.
- Ensuring consistent environmental conditions during measurements, such as stable temperature and lighting.
It's important to note that no measurement can be completely free from error.

However, by minimizing systematic and random errors, we can increase the accuracy and reliability of our measurements. Regular calibration, proper technique, and multiple measurements are key strategies to minimize errors when measuring the length of an object.

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The value of resistor R is 1.71 ohm when the difference in voltage is 8V and current is 6 A.

Using ohms law,

Req= V/I,

Req= 8/6 ohm,

= 4/3 ohm,

finding unknown resistance R.

1/Req.= 1/R1+1/R2+1/R,

3/4=1/10+1/15+1/R

R= 1.71 ohm.

The graphic shows a resistance R of 20, not 10. In an experiment, this is established using the standard formula R=VI, where V and I are the values from the voltmeter and ammeter, respectively.

Resistance can be calculated by applying Ohm's Law to evaluate current and voltage. Therefore, the resistance amount of a circuit may be computed if the measured current and voltage values are known. Analog and digital multimeters measure resistance using Ohm's Law.

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The distance the springs need to bring the car to a stop can be calculated using the equation for the potential energy of an object at a height, which is:

PE = mgh

where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s^2), and h is the height.

In this case, the car has a mass of 1,836 kg and is at a height of 88.6 meters. So the potential energy of the car at the top of the roller coaster is:

PE = 1,836 kg * 9.8 m/s^2 * 88.6 m = 1.5*10^5 J

Next, we need to find the work done by the spring. Work can be calculated using the equation

W = 1/2 * kx^2

where k is the spring constant (100,000 N/m) and x is the compression distance of the spring.

Since the work done by the spring is equal to the potential energy of the car, we can set the two equations equal to each other and solve for x (the compression distance of the spring):

1/2 * kx^2 = 1.510^5 J

x = sqrt(2 * 1.510^5 J / 100,000 N/m)

x = sqrt(30000/100000)

x = 0.173 m

Therefore, the spring needs a distance of 0.173 m to bring the car to a stop.

Answer: B

Explanation: Cause the energy is stored  as soon as the the car goes up the hill of the track gravity pulls the car down making it go at high speeds

Answer:

B. Its potential energy increases

Explanation:

As the car goes up, the potential energy increases. When it goes down the first hill, its kinetic energy will increase.

The Bauhaus style prioritizes sculptural, individualistic, artistic, and fragmented furniture design over function and ergonomics.

The Bauhaus movement, founded in Germany in the early 20th century, sought to integrate art, craftsmanship, and technology in design.

While the Bauhaus style did value functionalism and efficiency, it also emphasized the artistic and expressive qualities of furniture.

In contrast to traditional furniture design, Bauhaus furniture often showcased sculptural forms, unique individualistic designs, and fragmented compositions.

The emphasis on artistic expression meant that furniture in the Bauhaus style might prioritize aesthetic impact over practicality or ergonomic considerations.

This approach aimed to challenge conventional notions of design and explore new possibilities in form, materials, and visual composition.

The resulting furniture pieces were often visually striking and visually engaging, becoming works of art in their own right.

However, it's important to note that the Bauhaus style did not completely neglect function and ergonomics.

The movement sought to find a balance between artistic expression and practicality, with some furniture designs incorporating ergonomic considerations and functional features.

Overall, the Bauhaus style's focus on sculptural, individualistic, artistic, and fragmented furniture reflected its broader mission to blur the boundaries between art and design, ultimately influencing the development of modern design principles.

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Here work done by the car against the force of air in each second denotes the power needed to overcome air resistance at that particular speed. The power of engine is 28 kW.

The power of an object denotes the rate of performing the work. It is defined as the work done in unit time. The SI unit of power is Watt (W) which is also called joules per second.

Power = Resistance × Speed of vehicle

Here the air resistance is found to be 700 N. Then,

Power = 700 × 40 = 28000 N m/s = 28 kW

Thus the engine power is 28 kW.

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Answer:

There isn't enough information to solve.  Is this related to a graph?  The initial and final velocities are needed.  The expression for solving is noted under Explanation.

Explanation:

Given final velocity, initial velocity and displacement, one can solve for the acceleration using:

a=v2−u22s,

where v is final velocity (m/sec), u is initial velocity (m/sec) and s it the distance travelled (in m).

Answer:

carbón, hydrogen and oxygen

The non-mineral nutrients that are essential in photosynthesis will be oxygen and hydrogen.

The process through which green plants and certain other creatures manufacture nutrients from carbon dioxide and water using sunshine.

Plants need the green pigment chlorophyll to perform photosynthesis, which produces oxygen as a product.

The non-mineral nutrients that are essential in photosynthesis will be oxygen and hydrogen.

Hence oxygen and hydrogen are the correct non-mineral nutrients that are essential in photosynthesis

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1.When the non-sticky sides of the two pieces of tape recording are brought together, they repel each other. This is due to the buildup of electric charge on the  face of the tape recording when it was  hulled off from the flat  face.

2.The pieces didn't change when the tape recording was from different sets.  When two top or two  nethermost pieces of tape recording are brought together, they repel each other.

3.When a top and  nethermost piece of tape recording are brought together, they attract each other. This is  harmonious with the actuality of only two types of charge, positive and negative. The results support the fact that the top and  nethermost pieces of tape recording had  contrary charges.  The top tape recording attracted the arm hair, while the bottom tape recording didn't attract the arm hair. Arm hair is  generally neutral, but it can be  concentrated by the electric field of the charged tape recording.

4.The top tape recording is negatively charged, and it  concentrated the arm hair, which has a positive charge. This redounded in  magnet between the top tape recording and the arm hair.  The pieces of tape recording labeled" T1" and" B2" are  appreciatively charged, while the pieces of tape recording labeled" B1" and" T2" are negatively charged. This can be determined from the  compliances.

5.When the  appreciatively charged tape recording was brought  near to a negatively charged tape recording, they attracted each other. When two  appreciatively charged  videotapes or two negatively charged  videotapes were brought  near together, they repelled each other.  Like charges repel each other,  contrary charges attract each other, and neutral bodies aren't affected by electric fields.  

6.The force of  magnet or aversion between the pieces of tape recording increases as they get  near together and decreases as they move  further  piecemeal. This change happens gradationally, not  snappily.      

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Answer:

Distance, S = 13m

Explanation:

Given the following data;

Initial velocity, u = 4m/s

Final velocity, v = 9m/s

Time, t = 2 seconds

To find the distance, S;

First of all, we would determine the acceleration of the shark.

Acceleration = (v - u)/t

Acceleration = (9 - 4)/2

Acceleration = 5/2

Acceleration = 2.5m/s²

Now, to find the distance we would use the second equation of motion

S = ut + ½at²

Substituting into the equation, we have

S = 4(2) + ½*2.5*2²

S = 8 + 1.25*4

S = 8 + 5

Distance, S = 13m

An object's mass, rather than its weight is used to indicate the amount of matter it contains because weight is defined as the amount of force due to an existing field (In most cases, gravitational field) that is experienced by the body. The weight of the same body can be different in different environments it's observed.

However, the mass of the body is the exact measure of the amount of matter contained in a body. Which is constant, regardless of the environment, or conditions the body is observed.

Hence, for real-world calculations and experimentation, the mass of the body is considered to represent the amount of matter it contains rather than its weight.

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Answer:

15.34 i think

Explanation: