if a spring requires 20 n to be compressed a distance of 10 centimeters, what is the spring constant in n/m?

The wind direction for a flight over EMI at FL 270 is 240 degrees, with a wind speed of 25 knots. The temperature is -10 degrees Celsius.

When planning a flight, accurate weather information is essential for safe and efficient operations. The provided data indicates that the wind is coming from the direction of 240 degrees True, meaning the wind is blowing towards 240 degrees on the compass. The wind speed is reported as 25 knots, indicating the velocity of the wind.

Additionally, the temperature is stated as -10 degrees Celsius. The temperature is relative to the International Standard Atmosphere (ISA), which serves as a baseline reference for atmospheric conditions.

These parameters provide important information for flight planning. The wind direction and speed impact the aircraft's groundspeed and may require adjustments to the flight plan. The temperature affects aircraft performance, particularly air density and engine efficiency.

With the given wind direction, speed, and temperature, a pilot can use this information to calculate the expected flight time, fuel consumption, and make appropriate adjustments to the flight plan to ensure a safe and efficient journey over EMI at FL 270.

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A sound is moving through the atmosphere at a velocity of 343 ms-1. The sound wave has a wavelength of 0.1 cm.

Longitudinal waves are what make up sound. Compressions and rarefactions are also present in longitudinal waves when they pass through any given medium. When particles travel in close proximity to one another, compression occurs, creating areas of intense pressure.

As with all waves, the relationship between the speed of sound (vw), its frequency (f), and its wavelength () is provided by vw=f. vw=(331m/s)T273K describes how the sound's velocity in the air relates to air temperature T. For any and all frequencies and wavelengths, vw is constant.

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The first wave that forms when the wind begins to blow across the ocean surface is a capillary wave

The capillary waves represent the initial state of a wave that are produced by vortices in a flat sea. When the winds blow over an ocean, energy is transferred from the wind to the sea. and that produced the waves. They are also presented as ripples.

The capillary waves have a wavelength less than 1.7 cm or 0.68 inches and its speed of 0.2 to 0.3 meter per second.

It is a wave that is travelling along the interface boundary of a fluid and it is influenced by the effect of surface tension and the gravity.

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Plastic ends up the hottest when equal masses of lead, plastic, and stone are given the same amount of energy, considering the specific heat capacities of the materials.

The specific heat capacity of a substance measures the amount of heat energy required to raise the temperature of a given mass of the substance by a certain amount. A higher specific heat capacity means that the substance can absorb more heat energy without experiencing a significant increase in temperature.

Given that the specific heat of plastic is 50 times larger than the specific heat of lead and 10 times larger than the specific heat of stone, we can conclude that plastic can absorb more heat energy compared to lead and stone.

If equal masses of lead, plastic, and stone are given the same amount of energy, the substance with the higher specific heat capacity will end up the hottest because it can absorb more heat energy before experiencing a significant temperature increase.

Therefore, plastic, with its higher specific heat capacity, will end up the hottest among lead, plastic, and stone when given the same amount of energy.

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Answer:

sorry mate i dont know

Explanation:

sorry i just need points and i hope you get your answers

Answer:

Label A: red

Label B: yellow

Label C: green

Label D: blue

Label E: violet/purple

I think this should be correct. I'm sorry if I'm incorrect

Based on the degree of refraction from least to most refracted, the colors are as follows: Red, Orange, Yellow, Green, Blue, Indigo, Violet.

Refraction of light is the bending of light rays as they cross the boundary between two media of different densities.

White light consists of seven colors of light; Red, Orange, Yellow, Green, Blue, Indigo, Violet.

The red color has the shortest wavelength and is the least refracted while violet color has the longest wavelength and is most refracted.

Therefore, based on the degree of refraction from least to most refracted, the colors are as follows: Red, Orange, Yellow, Green, Blue, Indigo, Violet.

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The relationship between the angles of incidence and refraction when a light ray passes across the boundary between two media with differing refractive indices is described by Snell-Descartes law.

Snell's law

n₁sinθ₁ = n₂sinθ₂

In the following equation, n1 and n2 stand for the refractive indices of the two media. θ₁ for angle of incidence (the angle between the incident ray and the normal to the boundary), and θ₂ for angle of refraction (the angle between the refracted ray and the normal to the boundary). Sometimes referred to as Snell-Descartes law, in its mathematical form.

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Given:

A coil is connected to the bulb and a magnet is placed near the coil.

To find the consequence of moving the north side of the magnet towards the coil.

Explanation:

The changing magnetic field across the coil induces a current in the coil.

This is known as electromagnetic induction.

Here, the north side of the magnet moves towards the coil, this results in the change in the magnetic field across the coil.

The changing magnetic field induces a current in the coil.

As the coil is connected to the bulb, the induced current produced in the coil due to the moving magnetic field passes through the bulb.

Thus, the bulb glows.

Final Answer: The bulb glows as we move the north side of the magnet into the coil.

The height of the image formed by the converging lens is 9.5 cm.

The given problem can be solved using the lens formula and magnification formula. The lens formula relates the distance of the image from the lens to the distance of the object from the lens and the focal length of the lens. The magnification formula relates the height of the image to the height of the object and the distance of the image from the lens.

Let the distance of the object from the lens be u = -30 cm, the focal length of the lens be f = 10 cm, and the height of the object be h = 38 cm.

Using the lens formula, the distance of the image from the lens, v, can be calculated as:

1/v - 1/u

= 1/f1/v

= 1/f + 1/u1/v

= 1/10 - 1/(-30)1/v

= 1/10 + 1/30

= (3 + 1)/30

= 4/30

= 2/15v

= 15/2

= 7.5 cm (since the image is on the opposite side of the lens, it is negative)

Using the magnification formula, the height of the image, h', can be calculated as:

h'/h = -v/u(h')/38

= (-7.5)/(-30)h'

= (7.5/30) × 38

= 9.5 cm

Therefore, the height of the image formed by the converging lens is 9.5 cm.

The distance of the image from the lens, v = 7.5 cmThe height of the image formed by the converging lens is 9.5 cm.

Let the distance of the object from the lens be u = -30 cm, the focal length of the lens be f = 10 cm, and the height of the object be h = 38 cm.

Using the lens formula, the distance of the image from the lens, v, can be calculated as:

1/v - 1/u

= 1/f1/v

= 1/f + 1/u1/v

= 1/10 - 1/(-30)1/v

= 1/10 + 1/30

= (3 + 1)/30

= 4/30

= 2/15v

= 15/2

= 7.5 cm (since the image is on the opposite side of the lens, it is negative)

Using the magnification formula, the height of the image, h', can be calculated as:

h'/h = -v/u(h')/38

= (-7.5)/(-30)h'

= (7.5/30) × 38

= 9.5 cm

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Answer:

      ΔU = - 9,179 10-11 J

Explanation:

For this exercise the two basketballs are linked by gravitational interaction, so we can use gravitational energy

               U = - G m₁m₂ / R

In this case the mass is equal and the initial distance is r₁ = 19 cm = 0.19 m

               U₁ = - G m² / r₁

let's calculate

              U₁ = - 6.67 10⁻¹¹ 0.55² / 0.19

              U₁ = - 10,619 10⁻¹¹ J

when its centers are separated it is at r₂ = 1.4 m

              U₂ = - 6.67 10⁻¹¹ 0.55² / 1.4

              U₂ = - 1.44 10-11 J

the energy between these two points is

          ΔU = U₂ - U₁

          ΔU = (-1.44 +10.619) 10-11

          ΔU = - 9,179 10-11 J

The parameter "-r" of the "uname" command is used to display the kernel version number.

The "uname" command is used in Unix-like operating systems to retrieve system information. It provides various options or parameters to display specific details about the system. In this case, we are looking for the parameter that displays the kernel version number.

Among the given options, the correct parameter is "-r". When you run the "uname -r" command, it will output the kernel version number of the operating system.

For example, if you execute "uname -r" on a Linux system, it might display something like "5.4.0-52-generic". This indicates that the kernel version is 5.4.0-52-generic.

The other parameters listed (-m, -a, -b, -e, -d) have different purposes. For instance, "-m" displays the machine hardware name, "-a" displays all system information, "-b" displays the machine hardware platform, "-e" displays the event capabilities of the system, and "-d" displays the system's domain name.

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It is more difficult to start moving a heavy carton from rest than it is to keep pushing it with constant velocity because of static friction.

Static friction refers to the resistance encountered when attempting to initiate the movement of two objects that are in contact with each other but not currently in motion relative to each other. When an object is at rest, the force of static friction acts in the opposite direction to any force applied to it.

In this case, the force applied to the carton is the force needed to start moving it from rest. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.

Once the carton is moving with constant velocity, the force of static friction is no longer acting on it. The only force acting on the carton is the force that is applied to keep it moving at a constant velocity. This force is equal to the force of kinetic friction which is less than the force of static friction.

To summarize, the initial effort required to overcome the static friction between a heavy carton and its resting position is greater compared to the continuous force needed to maintain its constant velocity. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.

Once the carton is moving with constant velocity, the force of static friction is no longer acting on it, and the only force acting on the carton is the force that is applied to keep it moving at a constant velocity.

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Answer: The material that is not a mixture; it has the same properties all the way through is called a substance.

Explanation:

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Hence, it cannot be separated by physical means. Example: Gold

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. They can be separated by physical means as well. Example: Air

Thus the material that is not a mixture; it has the same properties all the way through is called a substance.

Answer:

The number of cycles can be calculated by dividing the total time by the period:

Number of cycles = Total time / Period

In this case, the period is 0.044 s and the total time is 22 s, so:

Number of cycles = 22 s / 0.044 s = 500

Therefore, the energy source will make 500 cycles in 22 seconds.

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Answer:

Answer: hydraulic press and hydraulic brakes. ... This law is useful in designing instruments like Bramah press ,Hydraulic press , Hydraulic jack etc. It is the principle in the development of hydraulic brakes , that are used in automobiles. It is also known as law of transmission of fluid pressure

Answer:

b. the seasons

Explanation:

The total momentum after collision is 143.466 kgm/s.

The momentum of a body is the product of the mass and the velocity of the body.

Assuming the right direction as positive and left direction as negative:

Momentum to the right = 46.3 * 5.24 = +242.612 kgm/s

Momentum to the left = 55.4 * -1.79 = -99.166 kgm/s

Total momentum before collision =  +242.612 kgm/s - 99.166 kgm/s

Total momentum before collision = 143.466 kgm/s

Thus, total momentum after collision is 143.466 kgm/s.

In conclusion, momentum is conserved in an isolated system of colliding bodies.

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Answer:

Explanation:

Initial velocity is 0. In the equation v = v0+at where v0 is the initial velocity of 0, we only have to fill in -9.8 for a and 2 for t to get the velocity after 2 seconds -19.6 m/s; after 5 seconds, when it hits the ground, a = -9.8 and t = 5 to give a velocity of -49 m/s. Gravity pulls down everything at the same rate, it doesn't matter whether we drop a feather or an elephant from the window!

Answer:

3,000 m/s

Explanation:

3,000 m/s

The bullet will hit 1.87 meters below the target.

Equations of motion are equations that describe the behavior of a physical system in terms of its motion as a function of time.

The first motion equation is v = u + at.

Second equation of motion: s = ut + 12 at2

Third equation of motion: v2 = u2 + 2as

Now for the given question,

Horizontal distance between the bullet and the target is 170 m.

The bullet's horizontal speed (u) is 275 m/s.

Time required to travel the horizontal distance  = \(Distance/velocity\)

Time taken (t) = \(170/275\)

t = 0.618 s

Now, in the vertical direction:

Initial velocity (u) = 0 m/s

Let the depth covered be h.

Time taken (T) = 0.618 s

Acceleration due to gravity (g) = 9.8 m/s^2

Now, using the seconds equation of motion:

\(h=ut+1/2 at^2\\h= 0+1/2 (9.8)(0.618)^2\\h=1.87 meters\)

Hence, the bullet will hit 1.87 meters below the target.

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Answer:

c

Explanation:

The amount of mass used up in holding a nucleus together the mass defect represent.

Thus, The term "mass defect" refers to the discrepancy between the actual atomic mass and the expected mass obtained by multiplying the mass of the protons and neutrons in the nucleus by a constant factor.

The anticipated mass obtained by combining the masses of the nucleons is less than the actual atomic mass. The binding energy that is produced when a nucleus forms accounts for this extra mass.

The mass defect is a result of some of the mass being converted to energy during the formation of a nucleus. The real mass of an atomic nucleus is therefore less than the mass of the constituent particles.

Thus,  The amount of mass used up in holding a nucleus together the mass defect represent.

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Answer:

O The resistor decreases the current by transforming electrical energy into different types of energy

Explanation:

resistors convert elec energy to heat

Answer:

D

-CONNECTIONS

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much love! <33

Answer:

(a) Parallel to the incedent ray

Answer:

Digestion begins in the mouth, when you chew.

Answer:

Explanation:

In projectile,

Maximum height = \(\frac{u^{2}sin^{2} \theta }{2g}\) and range = \(\frac{u^{2}sin2\theta }{g}\)

u = velocity of the body

\(\theta\) = angle of launch

g = acceleration due to gravity

If the range equals the maximum height in an ideal projectile launch on a horizontal plane, this means;

\(\frac{u^{2}sin^{2} \theta }{2g} = \frac{u^{2}sin2\theta }{g}\)

since \(sin2\theta = 2sin\theta cos\theta\)

\(\frac{u^{2}sin^{2} \theta }{2g} = \frac{u^{2}2sin\theta cos\theta }{g}\\\frac{sin\theta}{2} =2cos\theta \\sin\theta = 4cos\theta\\\frac{sin\theta}{cos\theta} = 4\\tan\theta = 4\\\theta = tan^{-1} \\4\theta = 75.9^{0}\)

The angle at which the range equals the maximum height in an ideal projectile launch on a horizontal plane is approximately 76°

We created models in three dimensions that depict the particles involved in nuclear reactions using plastic spheres, tiny beads, and strings of different colors.

The models provide an exact representation of the atomic nucleus, including its protons, neutrons, and the attractive and repulsive forces existing between them.

The utilization of LED lights was employed as a representation of the discharge of energy. The fission, fusion, and radioactive decay were effectively exhibited by the models. Despite their usefulness, simplified models have limitations in that they cannot fully capture the intricate dynamics at the atomic level.

To enhance the effectiveness of the models, we propose the integration of more complex intricacies, utilization of cutting-edge materials such as magnets, the inclusion of interactive components, and garnering valuable feedback from both users and educators.

These improvements would heighten precision, authenticity, and educational worth. Pictures exhibit the models along with their arrangements.

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Answer:

1st: Radiation

2nd: Conduction

3rd: Convection

Explanation:

I actually learned this before in school. Yay

When a rocket ship gaining speed in outer space runs out of fuel, it no longer gains speed and continues to travel at a constant velocity due to the absence of any force acting upon it. So, the correct answer is (c) no longer gains speed.

When a rocket ship is in outer space, it is moving in the vacuum with no frictional forces to slow it down. The rocket engine provides a force to accelerate it and continue moving at a constant velocity. However, when the rocket runs out of fuel, there is no longer any force to accelerate the rocket and it will stop accelerating.

Since there are no forces acting upon the rocket to slow it down, it will continue to move at a constant velocity indefinitely. This is because of Newton's first law of motion, which states that an object in motion will remain in motion at a constant velocity unless acted upon by an external force. Therefore, the correct answer is that the rocket no longer gains speed.

When a rocket ship gaining speed in outer space runs out of fuel, it will no longer gain speed and will eventually start slowing down. Without fuel, the rocket ship cannot continue to accelerate, and it will eventually reach a maximum velocity and begin to slow down due to the effects of gravity and other external forces. Therefore, the correct answer is option C: no longer gains speed.

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