During the second part of the lab, you reversed the polarity of a magnet, while keeping its strength the same. What change did this have on the current in the wire (in other words, how did this change the electromagnetic force)?

Answer: the electromagnetic spectrum

Explanation:

The full range of frequencies of electromagnetic radiation is called the electromagnetic spectrum. From longest to shortest wavelengths, it includes radio waves, microwaves, infrared light, visible light, ultraviolet light, X rays, and gamma rays.

Hope I have helped, and have a good day!!!

Among the given options, cultural differences are most likely to be the centrifugal force within the EU in the future. The EU is a political and economic union of 27 member states, and cultural differences among its member states have always been present.

With the increasing number of immigrants from different parts of the world, the cultural differences among EU member states are becoming more prominent. Each member state has its unique language, history, customs, and traditions, which can create misunderstandings and conflicts among the member states.
The EU aims to promote unity and solidarity among its member states, but cultural differences can lead to a lack of understanding and trust between them. The EU's diverse cultural heritage is both a strength and a challenge for the union. The EU needs to find a way to respect the cultural diversity of its member states while maintaining its unity.
However, the cultural differences among the member states can still cause tensions and conflicts in the future. Therefore, it is crucial for the EU to continue to foster cultural awareness and understanding among its member states to maintain the union's cohesion and stability.

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complete question:

Which of these is most likely to be a centrifugal force within the EU in the future?

a. trade barriers

b. closed borders

c. pollution problems

d. cultural differences

Answer:

potential energy=mgh

=50×10×20

=10000 J

Explanation:

the thing is it's not in English .....so I don't even understand a thing

Based on the given information, the temperature at your station in Houston is likely to decrease in the next 2 hours due to the constant temperature advection and is estimated to be 63.04ºF (16.8ºC).

Given the wind speed of 10 m/s from the west-northwest, we can use the concept of wind advection to adjust the temperature gradient based on the speed and direction of the wind.

First, we need to convert the wind speed from meters per second to kilometers per hour, as the temperature gradient is typically expressed in degrees per kilometer.

10 m/s is equivalent to 36 kilometers per hour (10 m/s * 3.6 km/h).

Next, we can adjust the temperature gradient based on the wind speed. The temperature change due to advection is typically estimated using a rule of thumb, which suggests that for each 10 kilometers per hour of wind speed, the temperature change is approximately 1 degree Celsius (or 1.8 degrees Fahrenheit) over a distance of 100 kilometers.

In this case, with a wind speed of 36 kilometers per hour, the adjusted temperature change due to advection would be approximately 3.6 degrees Celsius (or 6.48 degrees Fahrenheit) over a distance of 100 kilometers.

Now, let's calculate the temperature change at your station in Houston after 2 hours using the adjusted temperature gradient.

Temperature change = Adjusted temperature gradient × Distance × Time

Temperature change = 3.6°C/200 km * 200 km * 2 hours

Calculating the result, the temperature at your station in Houston is estimated to decrease by 7.2 degrees Celsius (or 12.96 degrees Fahrenheit) after 2 hours.

To find the final temperature at your station, subtract this temperature change from the initial temperature of 76ºF (24ºC):

Final temperature = Initial temperature - Temperature change

Final temperature = 76ºF (24ºC) - 12.96ºF (7.2ºC)

The estimated final temperature at your station in Houston after 2 hours is approximately 63.04ºF (16.8ºC).

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The given statement is true

Inertia is the tendency of an object to stay at rest or in motion

Image result for During a spring tide, the high tides are very high and the low tides are very low. Why does this occur?

In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides. '

brainliest please?

Answer:

In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides. '

Answer:

Explanation:

Liluzivert

Answer:

The present day model shows a nucleus composed of protons and neutrons with cloud-like spheres of different diameters surrounding the nucleus to represent the energy levels of the electrons in the atom. Rutherford's model shows electrons orbiting the nucleus along fixed, but similar- diameter circular paths.

Both models show the composition of the nucleus at the center of the atom and the much smaller electrons at some distance from the nucleus.

Explanation:

Neither of the models does a good job of representing the relative size differences of the protons, neutrons and electrons, or the distance between the nucleus and the "electron clouds."

The largest distance among the given choices is the distance to Alpha Centauri.  Option D is the correct answer.

Alpha Centauri is a star system located approximately 4.37 light-years away from Earth, making it the closest star system to our solar system. The distance from Mercury to Jupiter, the distance from the Earth to the Sun, and the distance to Sirius (the Dog Star) are all relatively smaller distances within our own solar system.

However, the distance to Alpha Centauri surpasses them all, extending over 4 light-years. Therefore, the correct answer is option D) the distance to Alpha Centauri.

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Final Answer:

a) Margaret's maximum distance from home is 100 miles.

b) Margaret's maximum speed is 60 miles per hour.

c) Margaret's maximum velocity is 60 miles per hour (assuming she traveled in a straight line).

d) Margaret's minimum speed is 20 miles per hour.

e) Margaret's minimum velocity is 20 miles per hour (assuming she traveled in a straight line).

f) The average speed for the entire journey is 40 miles per hour.

g) The average velocity for the entire journey is 0 miles per hour (assuming she returned home, indicating no overall displacement).

Explantion:

Margaret's maximum distance from home is 100 miles because that's the farthest she traveled from her starting point during her journey. Her maximum speed is 60 miles per hour, indicating the highest rate at which she was moving at any point during her trip. Maximum velocity is also 60 miles per hour, assuming she traveled in a straight line during this period.

Her minimum speed is 20 miles per hour, which represents the slowest speed she maintained during the journey. Similarly, her minimum velocity is 20 miles per hour, assuming she was moving in a straight line during this time.

The average speed for the entire journey is calculated by dividing the total distance traveled (100 miles) by the total time taken. In this case, it's 40 miles per hour.

The average velocity, however, is 0 miles per hour. This is because velocity takes into account both the magnitude and direction of motion, and since Margaret returned home, her overall displacement is zero, resulting in an average velocity of 0 miles per hour.

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Answer:

IN THE EXPLANATION!!

Explanation:

Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth.

Answer:

atmospheric pressure is the pressure exerted on the Earth's surface due to weight of air above it.

Answer:

V = I * R        voltage drop

P = I * V = I^2 * R        power

I = P / V = 327 / 15 = 21.8 amps

b)   I = 21.8 amps

a) R = P / I^2 = 327 / 21.8^2 = .69 ohms

Check:

V = I R = 21.8 * .69 = 15 Volts

The main cause of melting along subduction zones is the d. release of water from the subducting plate.

Subduction zones are areas where one tectonic plate moves beneath another, causing the denser plate to sink into the mantle. This process generates a significant amount of heat, which contributes to the melting of rocks in the mantle lithosphere.
As the subducting plate moves deeper into the mantle, it experiences increasing pressure and temperature. The minerals within the subducting plate contain water, which is released as the plate is subjected to these extreme conditions. This released water reduces the melting point of the surrounding mantle rocks, causing them to partially melt.

This partial melting creates magma, which can rise through the mantle lithosphere and eventually reach the Earth's surface, resulting in volcanic activity. The release of water from the subducting plate, therefore, plays a crucial role in generating the magma that leads to volcanic eruptions along subduction zones.
In summary, the main cause of melting along subduction zones is the d. release of water from the subducting plate, which lowers the melting point of surrounding mantle rocks and generates magma. This magma can rise through the mantle lithosphere, causing volcanic activity in these regions.

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The main cause of melting in subduction zones is the release of water from the subducting plate, which lowers the melting temperature of the surrounding rocks and causes them to melt.

The main cause of melting along subduction zones is primarily the release of water from the subducting plate (option d). When the oceanic lithosphere subducts, it carries with it water that has been trapped in the minerals of the crust and upper mantle. This water lowers the melting temperature of the surrounding rocks, causing them to melt and form magma. This is termed 'flux melting'. For example, the subduction of the Pacific Plate beneath the North American Plate in the Cascadia subduction zone causes intense volcanic activity in the Pacific Northwest.

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Taking into account the Newton's second law, the acceleration of the 100 g mass is 50 m/s².

Newton's second law states that this force will change the speed of an object because the acceleration and/or direction will change.

So, Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object:

F= m×a

where:

In this case, you know:

Replacing in Newton's second law:

5 N= 0.1 kg× a

Solving:

a= 5 N÷ 0.1 kg

a= 50 m/s²

Finally, the acceleration is 50 m/s².

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If a source of sound is traveling toward you, the speed of the sound waves reaching you is higher than the speed the sound waves would have had if the source were stationary.

The speed of sound waves in a medium is determined by the properties of the medium itself, such as its density and elasticity. In general, sound waves travel at a specific speed in a given medium, regardless of the motion of the source.

However, when the source of sound is in motion, there is an additional component to consider: the relative motion between the source and the observer. This relative motion affects the perceived frequency of the sound waves, known as the Doppler effect.

If the source of sound is moving towards the observer, the sound waves get compressed, resulting in a higher frequency and shorter wavelength. As a result, the speed of the sound waves relative to the observer appears higher than it would be if the source were stationary.

It's important to note that the actual speed of sound in the medium remains constant. It is the perceived speed or apparent speed of the sound waves reaching the observer that is affected by the motion of the source.

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In the given question, a car coasts into a hill at 16.0 m/s and it slows down with a uniform acceleration of -1.0 m/S/S.

to find,

the displacement after 5.0s,    s=60m

the displacement after 10.0s,   s=80m

according to the equation of motion,

s=ut+1/2at^2

a) t=5second, u=16m/s

s=ut+1/2at^2

s= 16*5 + 1/2 (-1.6) 5^2

s=80-20

s=60m

b)t= 10second , u=16m/s

s=ut+1/2at^2

displacement s=16*10 + 1/2 (-1.6)*10^2

displacement s=80m

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Answer:

Higher mass or higher speed

Explanation:

Higher mass will require more force

F= ma       if m goes up  F   goes up   to stop in the same distance

the appropriate section size for the red pine lumber beam with the safety level is grade 2, and the design life is 50 years is 150 mm × 5.44 mm.

Determine the characteristic load:The characteristic load is the permanent uniform load (including self-weight) plus the variable uniform load.

Given ,

the permanent uniform load is 4.1 kN/m

the variable uniform load is 1.0 kN/m

the characteristic load is (4.1 + 1.0) kN/m = 5.1 kN/m.

Calculate the design load:The design load is determined by multiplying the characteristic load by the partial safety factor for loads.

In this case,

the safety level is grade 2

the partial safety factor for loads (γ_f) is 1.4.

the design load is 5.1 kN/m × 1.4 = 7.14 kN/m.

Determine the maximum bending moment:The maximum bending moment occurs at the mid-span of the beam and is given by the equation:

M = (wL^2)/8, where ,

w is the design load

L is the span of the beam

M = (7.14 kN/m × (3.2 m)^2)/8 = 9.14 kNm.

Select an appropriate section size,use the formula: M = (bh^2)/6,

where,

b is the width of the section

h is the height of the section

(b × h^2) = (6 × 9.14 kNm)/(13 N/mm²) = 4.446 kNm/mm².

Since we have one unknown (either b or h), we need to make an assumption about one of them. Let's assume the width (b) is 150 mm.

h^2 = (4.446 kNm/mm²)/(b).

Substituting the assumed value of b = 150 mm,

h^2 = (4.446 kNm/mm²)/(150 mm) = 29.64 mm²/mm.

Taking the square root, we find: h ≈ 5.44 mm.

Therefore, the appropriate section size for the red pine lumber beam is  150 mm × 5.44 mm.

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The hydrostatic equation for pressure can be used between points that are at the same height and in a fluid at rest. In the image shown, the flow is steady and inviscid, and point (2) is a stagnation point. This means that the fluid is not moving at point (2), and the pressure at this point is equal to the stagnation pressure.
The correct answers are:
-> 1 and 4
-> 1 and 3

The hydrostatic equation for pressure can be used between the following pairs of points:
- 1 and 4: These points are at the same height and in a fluid at rest, so the hydrostatic equation for pressure can be used between them.
- 1 and 3: These points are also at the same height and in a fluid at rest, so the hydrostatic equation for pressure can be used between them.

The hydrostatic equation for pressure cannot be used between the following pairs of points:
- 1 and 2: These points are not at the same height, so the hydrostatic equation for pressure cannot be used between them.
- 3 and 4: These points are not at the same height, so the hydrostatic equation for pressure cannot be used between them.
- 2 and 5: These points are not at the same height, so the hydrostatic equation for pressure cannot be used between them.

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i. The gravitational force between the earth and sun can be obtained as follow:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.987×10²⁴ × 1.989×10³⁰) / (1.5×10¹¹)²

F = 3.53×10²² N

Thus, the gravitational force between the earth and sun is 3.53×10²² N

ii. The gravitational force between the earth and moon can be obtained as follow:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.987×10²⁴ × 7.347×10²²) / (3.844×10⁸)²

F = 1.99×10²⁰ N

Thus, the gravitational force between the earth and moon is 1.99×10²⁰ N

Comparison = G₁ / G₂

G₁ / G₂ = 3.53×10²² / 1.99×10²⁰

G₁ / G₂ = 177

Cross multiply

G₁ = G₂ × 177

Thus, we can say that the gravitational force between the earth and sun is 177 times bigger than the gravitational force between the earth and moon

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Answer:

Sleeping

Explanation:

Driving in traffic is stressful because you may be late for wherever you are going,

Opening a birthday present is stressful because you don't know what is inside until you open it.

Watching a soap opera is stressful because you do not know what will happen next,

Sleeping is not stressful as long as you don't bring stressful topics to bed.

The extension of the spring is 4.83 m, if work done is 35 Newton and spring constant is 3 k N/m.

The spring constant, k, is a measure of the stiffness of the spring. it's far one of a kind for unique springs and materials. the larger the spring regular, the stiffer the spring and the greater.

Spring constant of 3 k N/m,

The amount of work done in extending is 35 N

WORK DONE by spring force = 1/2 k X²

                                                 ⇒0.5 * 3 * X²

                                   35 N = 0.5 * 3 * X²

                                 X² = 35/1.5

                                  x = \(\sqrt{23.33}\)

                                     X = 4.83 m

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The extension of the spring is can be found out by using the Work Done due to extension in Spring Constant K. The extension in the spring is 4.83m.

The spring constant, k, is a measure of the stiffness of the spring. It is for springs and materials which measures the ratio of force that affects the spring and the displacement caused by the force action.

Spring constant depends on the stiffness of the spring, wire thickness, number of turns in wound coil, length of spring and diameter of the coil.

Given:

Spring constant = 3000 N/m

Work Done in extension= 35 N

Let the extension in spring by x.

∴ Work Done by spring force = 1/2 kx²

                        Work done   = 0.5 × 3 × x²

    ⇒                                 35 N = 0.5 × 3 × x²

    ⇒                                      x² = 35/1.5

     ⇒                                         x = 4.83m

Hence, the extension of spring is 4.83m.

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c) The rubber band is stretched under a constant tension. when you warm the rubber band under the constant tension it will expand instead of shrinking.

If you warm the rubber band while keeping it under constant tension, it will expand instead of shrinking. This occurs due to the fact that the rubber band's atoms begin to vibrate more as a result of the heat. This vibrating motion produces more space between the atoms, causing the rubber band to expand.

The original condition of the rubber band under constant tension is when a rubber band is stretched, it has an intrinsic tendency to restore its original size and shape when the tension is released. It implies that if the rubber band is heated, it will also restore its original size and shape once the tension is released. It will take the same size as it had before being stretched.

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Answer:

the car’s final displacement is 60 m

Explanation:

Given;

initail velocity of the car, u = 0

acceleration of the car, a = 0.8 m/s²

time of motion, t = 10 s

The first displacement of the car:

\(x_1 = ut + \frac{1}{2} at^2\\\\x_1 = 0 + \frac{1}{2} (0.8)(10)^2\\\\x_1 = 40 \ m\)

The second displacement of the car;

acceleration, a = 0.4 m/s²,   time of motion, t = 10 s

\(x_2 = ut + \frac{1}{2} at^2\\\\x_2 = 0 + \frac{1}{2} (0.4)(10)^2\\\\x_2 = 20 \ m\)

The final displacement of the car;

x = x₁  +  x₂

x = 40 m  +  20 m

x = 60 m

Therefore, the car’s final displacement is 60 m

Complete Question:

A long distance runner running a 5.0km track is pacing himself by running 4.5km at 9.0km/hr and the rest at 12.5km/hr. What is the average speed?​

Answer:

Average speed = 9.7333 km/h

Explanation:

Given the following data;

To find the average speed;

First of all, we would determine the time taken to cover distance A in speed A by using the formula;

\( Time \ A = \frac {Distance \; A}{Speed \; A} \)

Substituting the values into the formula, we have;

\( Time \ A = \frac {4.5}{9.5} \)

Time A = 0.4737 hours

Total distance = distance A + distance B

5 = 4.5 + distance B

Distance B = 5 - 4.5

Distance B = 0.5 Km

Next, we would determine the time to cover distance B in speed B;

\( Time \ B = \frac {0.5}{12.5} \)

Time A = 0.04 hours

Total time = time A + time B

Total time = 0.4737 + 0.04

Total time = 0.5137 hours

Now, we would solve for the average speed;

Mathematically, the average speed of an object is given by the formula;

\( Average \; speed = \frac {total \; distance}{total \; time} \)

\( Average \; speed = \frac {5}{0.5137} \)

Average speed = 9.7333 km/h

When the mass on the block was increased, the angle of repose also increased.

This is because the gravitational force acting on the block also increased, causing it to require a steeper angle to maintain equilibrium.

Additionally, the increased mass also increased the amount of friction between the block and the surface it was resting on, further contributing to the increase in angle of repose.

These results were expected, as the angle of repose is directly influenced by the mass of the block and the friction between the block and the surface it is resting on.

This is because the angle of repose represents the maximum angle at which a block can rest without sliding down the surface.

Therefore, as the mass and friction increase, the angle of repose must also increase to maintain stability.

It is important to note that the angle of repose is also influenced by other factors, such as the shape and size of the block and the surface it is resting on.

Therefore, further experimentation and analysis may be required to fully understand the relationship between these variables and the angle of repose.

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Answer:

imma have to come back to you on that one

Answer:

The Sun is at the center of the solar system and the planets move around it.

Explanation:pluto/edmentum

Answer:

The required acceleration is \(a=1.1\) m/s²

Explanation:

Given

To determine

Acceleration a = ?

We know that acceleration is produced when a force is applied to a body.

The acceleration can be determined using the formula

\(F = ma\)

where

now substituting F = 250 , and m = 221 in the formula

\(F = ma\)

\(250 = 221 (a)\)

switch the equation

\(221(a) = 250\)

Divide both sides by 221

\(\frac{221a}{221}=\frac{250}{221}\)

simplify

\(a=\frac{250}{221}\)

\(a=1.1\) m/s²

Therefore, the required acceleration is \(a=1.1\) m/s²