when traveling at 55mph, how many feet do you need to stop?

Answer:

•Helps to maintain va proper pH in the body which supports cell function.

•Carries electrolytes such as sodium and potassium to our muscles.

Answer:

y = 33.93 10⁵ m

Explanation:

This is an interference exercise, for the contributory interference is described by the expression

           d sin θ = m λ

let's use trigonometry for the angle

           tan θ = y / L

how the angles are small

          tan θ = sin θ / cos tea = sin θ

we substitute

         sin θ = y / L

        d y / L = m λ

         y = m λ L / d

the light fulfills the relation of the waves

       c = λ f

       λ = c / f

       λ = 3 10⁸ /375

       λ = 8 10⁵ m

first order m = 1

let's calculate

        y = 1  8 10⁵  4030 10-9 / 950 10-9

        y = 33.93 10⁵ m

We can determine the direction of the electric field. The force on the small ball is in the -x direction, which means the electric field must also be in the -x direction. Therefore, the direction of the electric field is -x.

Based on the information given, we know that a set of charges is creating a force of 5.0x10-15 N in the -x direction on a small -25 ball. This force is caused by the electric field created by the charges.
To find the strength and direction of the electric field, we can use the formula:
Electric field strength (E) = Force (F) / Charge (q)
We know the force (F) is 5.0x10-15 N, but we don't know the charge (q) on the small ball. Therefore, we cannot calculate the exact strength of the electric field.

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Answer:

a lot stresses me out honestly like school work because we are virtual and it's hard cause you basically teaching yourself, secondly me maintaining to be happy i always put everybody's happiness before mine and it's just a lot for me, and lastly the thing that stresses me the most is me overthinking i ALWAYS overthink situations.

Explanation:

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The new position of the Arctic and Antarctic Circles would be located at 30° North and 30° South, respectively.

If the tilt of Earth's equator relative to its orbit were 30° instead of 23.5°, the location of the Arctic and Antarctic Circles would be affected. The Arctic Circle is defined as the latitude above which the sun does not set on the summer solstice and does not rise on the winter solstice. The same applies to the Antarctic Circle but in the Southern Hemisphere.

Currently, the Arctic Circle is located at 66.5° North and the Antarctic Circle is located at 66.5° South. If the tilt of Earth's equator relative to its orbit were 30°, the position of the Arctic and Antarctic Circles would be closer to the equator.

To determine the new position of the Arctic and Antarctic Circles, we can use the following formula:

θ = 90° - ϕ

where θ is the angle between the axis of rotation and the line perpendicular to the plane of the ecliptic, and ϕ is the tilt of the Earth's axis relative to the plane of the ecliptic.

If the tilt were 30°, then θ would be:

θ = 90° - 30° = 60°

Therefore, the new latitude of the Arctic and Antarctic Circles would be:

ϕ = 90° - 60° = 30°

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The new position of the Arctic and Antarctic Circles would be located at 30° North and 30° South, respectively.

If the tilt of Earth's equator relative to its orbit were 30° instead of 23.5°, the location of the Arctic and Antarctic Circles would be affected. The Arctic Circle is defined as the latitude above which the sun does not set on the summer solstice and does not rise on the winter solstice. The same applies to the Antarctic Circle but in the Southern Hemisphere.

Currently, the Arctic Circle is located at 66.5° North and the Antarctic Circle is located at 66.5° South. If the tilt of Earth's equator relative to its orbit were 30°, the position of the Arctic and Antarctic Circles would be closer to the equator.

To determine the new position of the Arctic and Antarctic Circles, we can use the following formula:

θ = 90° - ϕ

where θ is the angle between the axis of rotation and the line perpendicular to the plane of the ecliptic, and ϕ is the tilt of the Earth's axis relative to the plane of the ecliptic.

If the tilt were 30°, then θ would be:

θ = 90° - 30° = 60°

Therefore, the new latitude of the Arctic and Antarctic Circles would be:

ϕ = 90° - 60° = 30°

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The distance between a nodal plane of b⃗ and the closest antinodal plane of b⃗ is half the wavelength of the wave represented by b⃗.

When considering a wave represented by b⃗, nodal planes are regions where the amplitude of the wave is zero, while antinodal planes are regions of maximum amplitude. The distance between a nodal plane and the closest antinodal plane can be determined by examining the properties of the wave.

A nodal plane occurs at the points where the displacement of the wave is zero. In contrast, an antinodal plane represents the points of maximum displacement. Since the distance between a nodal plane and the nearest antinodal plane is equivalent to half the wavelength, it implies that one-half of a wavelength encompasses a complete cycle of the wave.

To understand this concept further, imagine a wave propagating in space. As the wave oscillates, it goes through a complete cycle from a nodal plane to an antinodal plane and back to a nodal plane. The distance between these two distinct regions is half the wavelength. This relationship holds true for various types of waves, such as electromagnetic waves, sound waves, and water waves.

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Answer:

Her altitude as she crosses the bar, h₂ is approximately 6.1 m

Explanation:

The given parameters of the motion of the pole vaulter are;

The mass of the pole vaulter, m = 57 kg

The speed with which the pole vaulter is running, u = 11 m/s

The speed of the pole vaulter when she crosses the bar, v = 1.1 m/s

The acceleration due to gravity, g = 9.8 m/s²

From the total mechanical energy, M.E. equation, we have;

M.E. = P.E. + K.E.

Where;

P.E. = The potential energy of the motion = m·g·h

K.E. = The kinetic energy of the motion = 1/2·m·v²

By the principle of conservation of energy, we have;

The change (loss) in kinetic energy, ΔK.E. = The change (gain) in potential energy, ΔP.E.

ΔK.E. = 1/2·m·(v² - u²)

ΔP.E. = m·g·(h₂ - h₁)

Where;

h₁ = The ground level = 0 m

h₂ = The altitude with which she crosses the bar

∴ 1/2·m·(v² - u²) = m·g·(h₂ - h₁)

(h₂ - h₁) = (v² - u²)/(2·g) = (11² - 1.1²)/(2·9.8) = 6.11173469388

h₂ = 6.11173469388 + h₁ = 6.11173469388 + 0 = 6.11173469388

h₂ = 6.11173469388

Her altitude as she crosses over the bar, h₂ ≈ 6.1 m.

1. Wave number can be calculated by using the formula:

k = 2π/λ, where λ is the wavelength of the wave.

The equation of the wave is y(x,t) = 2 cos(300t + 0.6x).

Comparing with the standard equation of wave:

y(x,t) = A cos(kx - ωt + φ)

Hence, the wave number, k, which is equal to 0.6.

2. The angular frequency, ω, is given by the formula:

ω = 2πf, where f is the frequency of the wave.

Hence, the angular frequency is 300 radians per second.

3. The speed of the wave, v, is given by the formula:

v = λf = ω/k

The speed of the wave is:

v = (2π/0.6) * (1/300)

v ≈ 35.4 m/s

4. The direction of the wave can be determined by looking at the coefficient of x in the equation:

y(x,t) = 2 cos (300t + 0.6x)

Since the coefficient of x is positive, the wave is traveling in the positive x direction.

5. The frequency of the wave, f, is given by the formula:

f = ω/2π

Therefore, the frequency is 300/2π ≈ 47.7 Hz.

6. The amplitude of the wave is

7. The frequency is already determined above in part 5

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Given,

The velocity of the spaceship in as observed by an observer at the earth, v=0.75c

The time interval as observed by the observer on the earth, t₁=2.5 s

The time elapsed in the ship's frame of reference is given by,

On substituting the known values,

Thus the time elapsed for an observer in the spaceship is 3.79 s

12 x cos 50 = 7.713451316...

In order to create a magnifier in convex lens, you should choose a short focal length that is lesser than 1 meter.

A convex lens is also referred to as converging lens and it can be defined as a type of lens that typically causes parallel rays of light with respect to its principal axis to come to a focus (converge) and form a real image.

In Science, a magnifier refer to an optical instrument that allow us to look at a very near object because its image is generally formed farther away. Thus, the image of the object appears to be much larger.

In this context, you should choose a short focal length that is lesser than 1 meter when you want to create a magnifier in convex lens because the nearer the object is to the lens, the larger would be the image formed.

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Answer:

True

Explanation:

The Gravitational potential energy is given by:

G = mgh

m = mass of body ; g = acceleration due to gravity ; h = height

G for a ball of mass 10kg ; height of 20 meters above the ground

G = 10kg * 9.8m/s² * 20m = 1960 kgm²/s²

G for a ball of mass 1000kg at height, 0 meters :

G = 1000 * 9.8 * 0 = 0

1960 > 0

Hence, Gravitational potential energy for 10kg ball at height 20m is greater Thammfor a 1000kg ball on the ground.

The solar wind, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, is a highly ionized plasma.

The solar wind, which is a stream of charged particles (plasma) emitted by the Sun, exhibits characteristics of a highly ionized plasma. As it travels from the Sun to the Earth, the solar wind encounters variations in temperature, density, pressure, and speed. In this case, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, the solar wind can be classified as a highly ionized plasma.

During a Coronal Mass Ejection (CME), eruptive phenomena on the Sun's surface cause a sudden release of a large amount of plasma and magnetic fields into space. This disturbance leads to an increase in the temperature of the solar wind to around 10^7 K and an increase in its speed to approximately 10^3 km/s. This enhanced energy and velocity result in a significant disruption of the solar wind's flow, making it a turbulent fluid.

Turbulent fluids are characterized by chaotic and irregular motion, with strong fluctuations and mixing. The increased temperature and speed during a CME generate turbulent behavior within the solar wind, leading to the disruption and mixing of plasma particles along its trajectory.

To determine the type of fluid flow, the Reynolds number (Re) is often used. It relates the flow's characteristics, such as velocity and length, to the fluid's viscosity. In this case, since the solar wind is a plasma and has negligible viscosity, the Reynolds number is extremely high, well above the turbulent threshold of 4000. Therefore, the solar wind with increased temperature and speed due to a CME can be classified as a turbulent fluid.

In summary, the solar wind, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, is a highly ionized plasma. However, during a Coronal Mass Ejection (CME), the temperature and speed of the solar wind increase significantly, leading to turbulent fluid behavior.

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Answer:

Earth's atmosphere is made up of a combination of gases. The major components of nitrogen, oxygen, and argon remain constant over time and space, while trace components like CO 2 and water vapor vary considerably over both space and time.

Explanation:

it is C

Answer:

c

Explanation:   O n O

We are given the following information about an inelastic collision.

Mass of 1st object = 4 kg

Mass of 2nd object = 10 kg

Initial velocity of 1st object = 25 m/s

Final velocity of both objects = 14 m/s

Initial velocity of 2nd object = ?

In an inelastic collision, the momentum is conserved but the kinetic energy is not conserved.

Recall that the total momentum is conserved and given by

Let us substitute the given values and solve for initial velocity of the body (u2)

Therefore, the initial velocity of the body of mass 10 kg is 9.6 m/s

Answer: 37 Celsius and 310.15 K

Explanation:

C/5 = (F-32)/9 = (98.6-32)/9 = 66.6/9 = 7.4

C = 7.4 * 5 = 37 so the temperature is 37 Celsius

K = C + 273.15 = 37 + 273.15 = 310.15 K

Answer:

I'm pretty sure it's called Astronomy

Explanation:

Hope this helps:)...if not then sorry for wasting your time and may God bless you:)

Answer: Astronomy

Explanation: Astronomy is objects we can see with our eyes, like the Sun , the Moon , the planets, and the stars . It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.

I hope this helps ;o o;

Answer:

Explanation:

perfect drawing

(a) The maximum frequency of revolution is 4.0 rad/s.

b (i) The tension in the string is maximum when the object is at the top of its path and minimum when it is at the bottom of its path.

b (ii) The speed of the mass can be found using the minimum tension in the string is 2 m/s.

The maximum frequency of revolution is given by the maximum tension in the string, which is 60 N.

T = mv² / r

where;

The linear speed is given by:

v = 2πrf

where;

f = √T / (mr²))

f = √(60 / (0.60 x 1.20²))

f = 4.0 rad/s

(i) The tension in the string is maximum when the object is at the top of its path and minimum when it is at the bottom of its path. This is because the tension provides the centripetal force that keeps the object moving in a circular path.

(ii) The speed of the mass can be found using the minimum tension in the string, which is 2.1 N:

T = mv² / r = 2.1 N

Rearranging and solving for v, we get:

v = √(Tr / m)

v = √(2.1 x 1.20 / 0.60)

v = 2.0 m/s

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Answer:

atlanta

Explanation:

just took the test

The reference point in this scenario is Atlanta.

The can be described as the starting point of the entire journey.

From the given statements the family started the journey from Atlanta and then traveled to Baltimore.

Atlanta is the start point (reference point) while Baltimore is the destination (finishing point).

Thus, the reference point in this scenario is Atlanta.

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Answer:

Explanation: the table shows during an experiment

Gravitational forces are strongest between objects with identical masses,  claims are supported by the data. Option B is correct.

Newton's law of gravity states that each particle having mass in the universe attracts each other particle with a force known as the gravitational force.

Gravitational force is proportional to the product of the masses of the two bodies and inversely proportional to the square of their distance.

When mass increases and distance reduces, gravity rises. Gravity also lowers when the distance between two points grows and the mass decreases.

From the table, it is observed that gravitational forces are strongest between objects with identical masses,  claims are supported by the data.

Hence, option B is correct.

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Answer:

See below

Explanation:

First, find acceleration from  

F = m * a

then    vf = a * t     for the final velocity    ......   Plug and chug

Hot pavement under my feet and my mouth dry as sand. (Option C)

The lines that give the best example of a leading approach, as opposed to a leaping approach, are in option c: "hot pavement under my feet and my mouth dry as sand."

This is because the line is describing the immediate physical sensations and emotions the speaker is experiencing, suggesting a gradual and deliberate approach to the situation.

In contrast, a leaping approach would involve a sudden, impulsive action or decision, which is not evident in any of the given lines.

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Under optimal conditions, the distance traveled by one replication fork from the oric in 1 minute is 0.032 millimeters.

To calculate the distance traveled by one replication fork from the origin of replication (oric) in one minute, we need to determine the speed of replication fork movement.

Given that the E. coli chromosome is 1.28 millimeters long and replication occurs in 40 minutes, we can calculate the speed of replication fork movement as follows:

Speed = Distance ÷ Time

Distance traveled by one replication fork in 40 minutes = 1.28 mm

Speed = 1.28 mm ÷ 40 min

= 0.032 mm/min

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Answer:

If an object has a fast velocity, the dots on a ticker tape diagram will be far apart.