how does migration decrease the population.​

Answer:

The correct answer is - oxygen.

Explanation:

Cardiovascular endurance is the ability to do physical activity or exercise without affecting or being tired for a longer time period. Aerobic exercise or activity can help to increase cardiovascular endurance.

Improving the cardiovascular system helps in delivering oxygen as per the demands with the help of the heart that pumps the oxygen-rich blood to different organs of an individual and lungs by inhaling enough oxygen.

The initial pressure is PN2 = 218 torr.

What is pressure?

Pressure is a fundamental concept in physics, defined as the force exerted per unit area. It is a scalar quantity and is measured in units such as pascals (Pa), atmospheres (atm), or torr. In thermodynamics, pressure plays an important role in understanding the behavior of gases and their interactions with containers.

The initial pressure of N2 in the 1.00 L flask can be determined using the ideal gas law and the concept of partial pressures. The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature (assumed to be constant). The concept of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the pressures that each gas would exert if it were present alone at the same temperature and volume.

Given that the total pressure in the flasks is 332 torr after the stopcock is opened, the pressure of N2 can be found by subtracting the pressure of H2 from the total pressure:

Ptotal = PN2 + PH2

332 torr = PN2 + 389 torr

PN2 = 332 torr - 389 torr

PN2 = -57 torr

The pressure cannot be negative, so the correct answer is PN2 = 218 torr.

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Answer:

its 4 right

i hope it is

Answer:

im pretty positive its 4 , if not its 1

From what we know, we can confirm that the phrase in the question best describes the term "Theory".

We can say that this is the exact definition of a theory. In other words, a theory is an idea or hypothesis proposed as a possible solution to a known problem, which is backed up by facts and conclusions derived from many scientific experiments and investigations.

Therefore, we can confirm that the phrase in the question best describes the term "Theory".

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Water will have the higher surface tension since it exhibits **stronger intermolecular forces** when compared to acetone.

Surface tension is a property of liquids that arises from the cohesive forces between molecules at the surface. In water, the intermolecular forces, specifically hydrogen bonding, are relatively strong, leading to a higher surface tension. These hydrogen bonds create a network of cohesive forces that hold the water molecules together, causing the surface to behave like a stretched elastic sheet.

Acetone, on the other hand, is a smaller molecule and does not exhibit as strong intermolecular forces compared to water. The intermolecular forces in acetone, such as dipole-dipole interactions and London dispersion forces, are weaker than the hydrogen bonding in water. As a result, acetone has a lower surface tension than water.

Therefore, water will have the higher surface tension due to its stronger intermolecular forces.

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Answer:

The tangential acceleration is 0 m/s².

Explanation:

Answer:

The tangential acceleration is 0 m/s².

Explanation:

Answer:

Explanation:

To calculate the mass of an object that would reduce Earth's orbital velocity by even a hundredth of a percent, we need to use the conservation of momentum principle. According to this principle, the total momentum of a system remains constant if no external forces act on it.

In this scenario, we can consider the Earth and the object as a closed system. The initial momentum of the system is Earth's momentum, and the final momentum is Earth's momentum after the collision.

Let's assume the mass of the Earth is M_E and the initial velocity of Earth is V_E. After the collision with the object, the final velocity of Earth is V_E' . The mass of the object is M_O, and its velocity is V_O (twice Earth's velocity)

The conservation of momentum principle states that:

M_E * V_E = M_E * V_E' + M_O * V_O

To reduce Earth's orbital velocity by even a hundredth of a percent, we can assume that V_E' = V_E - (0.0001 * V_E)

Therefore,

M_E * V_E = M_E * (V_E - (0.0001 * V_E)) + M_O * (2 * V_E)

Rearranging this equation we can find the mass of the object M_O

M_O = M_E * (V_E / (2 * V_E - 0.0001 * V_E))

To get the exact mass of the object, we need to know the mass of the Earth and the velocity of Earth, which are not provided in the question. However, this calculation will give an approximate mass that the object would need to have in order to reduce Earth's orbital velocity by even a hundredth of a percent.

The force of friction acting on the fridge is 149.3 N.

Force of friction is the force that tends to oppose the motion of two surfaces that are in contact.

To get an object into motion the force of friction must be overcame.

The force of friction also tends to oppose the motion of an object.

The frictional force on the refrigerator is calculated by apply Newton's second law of motion.

F - Ff = ma

where;

If the refrigerator didn't budge, acceleration = 0

F - Ff = 0

F = Ff

149.3 N = Ff

Thus, when the force of friction is equal to applied force, the object won't move.

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Answer:

9 th grade

Explanation:

Given 60 feet of wall wire to enclose three pens, with one side being a wall, you can allocate the wire as follows: use 30 feet for the outside fencing (divided into 3 strands of wire) and 10 feet for each of the inside dividers.

Let's break down the wire allocation for the three pens. Since one side is already a wall and doesn't require fencing, we can distribute the remaining wire to the other sides. The outside fencing requires 3 strands of wire, so we allocate 30 feet for the outside fencing, with each strand being 10 feet long.

For the inside dividers, we have two dividers for three pens. Since each divider separates two pens, we need 10 feet of wire for each divider. Therefore, in total, we allocate 10 feet for each inside divider.

By allocating 30 feet for the outside fencing (3 strands) and 10 feet for each inside divider, we effectively use all 60 feet of wall wire to enclose the three pens as specified.

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You have 60 feet of wire to enclose three pens. Wall (no fence needed) One side is a wall that needs no fence. The outside fencing (thick lines) requires 3 strands of wire. х The inside dividers (thin lines) require 1 strand of wire. y What values for x and y will create a fence that encloses the maximum total area for the pens? y = Enter each answer as a whole number or as a reduced fraction (such as 4/5, 35/4 or 11/2).

Answer:

1400 N

Explanation:

Verá, durante el salto mortal, el piloto se mueve en una trayectoria circular y la fuerza que actúa sobre él es una fuerza centrípeta.

Sea la fuerza centrípeta F, la masa del piloto (m) = 70 Kg, el radio (r) = 500 my la velocidad (v) = 360 km / hr * 1000/3600 = 100 m / s

F = mv ^ 2 / r

F = 70 * (100) ^ 2/500

F = 1400 N

Answer:

4.1 Introduction. Our modern society depends heavily on thermal energy sources derived mostly from coal, petroleum, and natural gas combustion.

On common Single-Mode Fiber, the Cisco 10GBASE-ER Module supports links up to 40 kilometres long (SMF, G. 652).

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Answer:

No, they don't have the same velocity

Explanation:

Given that one person pushes the car 2 m/s east, and the other pushes the car 1.5 m/s east.

As velocity is a vector quantity, so, to have equal velocity, both magnitude as well as the direction must be equal.

For the first person:

Magnitute of the velocity = 2 m/s.

The direction of the velocity: Towards east.

For the second person:

Magnitute of the velocity = 1.5 m/s.

The direction of the velocity: Towards east.

As both the person have the same direction but the different magnitude of the velocity, so, they don't have the same velocity.

Answer:

DONT LISTEN TO THE OTHER PERSON YOU WILL GET A VIRUS ON YOUR COMPUTER

Explanation:

DONT DO IT PWEASEEEEE

Answer:25

Explanation:

Formula(77°F − 32) × 5/9 = 25°C

Answer: The answer is C. 298 K

Explanation:

Answer:

Saltwater

Explanation:

Because of the oceans.

Answer:

A: Saltwater

Explanation:

97% of all water on earth is saltwater.

B. energy is transferred from one object to another.

Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 980 × 5

We have the final answer as

Hope this helps you

The refractive index of the new medium is approximately 1.59.

Snell's law relates the angles of incidence and refraction of light passing through a boundary between two media with different refractive indices (n). The formula is:

n₁ sin θ₁ = n₂ sin θ₂

where n₁ is the refractive index of the first medium, θ₁ is the angle of incidence, n₂ is the refractive index of the second medium, and θ₂ is the angle of refraction.

In this problem, we know that the angle of incidence is 30.0 degrees and the angle of refraction is 18.0 degrees. We also know that the refractive index of air (n₁) is 1.00. Therefore, we can use Snell's law to solve for the refractive index of the new medium (n₂):

n₁ sin θ₁ = n₂ sin θ₂

1.00 sin 30.0° = n₂ sin 18.0°

n₂ = (1.00 sin 30.0°) / sin 18.0°

n₂ ≈ 1.59

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The angle of incidence at which the reflected light will be totally polarized in lucite with an index of refraction of 1.49 is approximately 56.3 degrees.

When light is incident on a surface, the angle at which it strikes the surface is called the angle of incidence. The reflected light can be partially or totally polarized depending on the angle of incidence and the refractive index of the material.

For light incident on an interface between two media, the angle of incidence at which the reflected light is totally polarized is given by the Brewster's angle (θB). The relationship between the Brewster's angle and the refractive index (n) of the material is defined as:

n = tan(θB)

In this case, the refractive index of lucite is given as 1.49. Solving for the Brewster's angle:

θB = arctan(n)

θB = arctan(1.49)

θB ≈ 56.3 degrees

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Answer:

100 ml de una disolucion 05 M de sulfate de vivre

Could someone help me? A cannon is fired with an initial horizontal velocity of 20 m/s and initial vertical velocity of 25 m/s . After 3s in the air, the canon hits its target. How far away was the canon from its target?

A high jumper leaves the ground with an initial velocity of 10 m/s rightward at an angle of 15 degrees . What is the high jumper's initial horizontal velocity?

Astronomers can now report that active star formation was going on at a time when the universe was only 20% as old as it is today. when astronomers make such a statement, they examine the spectra of galaxies (or the overall colors of galaxies) with the highest redshifts they can find.

SO option B is correct.

An astronomer is described as a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth by observing astronomical objects such as stars, planets, moons, comets and galaxies – in either observational or theoretical astronomy.

Astronomers are known to use redshifts to measure how the universe is expanding, and thus to determine the distance to our universe's most distant and therefore oldest objects.

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The displacement of the ball is zero.

What is displacement?

The smallest distance between the initial and final position of an object.

What are the equations of motion?

There are three equations of motion that completely describes the motion of an object.

The first equation of motion gives the relationship between the initial velocity, final velocity, acceleration, and time.

The second equation of motion gives the relationship between the initial velocity, displacement, acceleration, and time.

The third equation of motion gives the relationship between the initial velocity, final velocity, acceleration, and displacement.

Given time, initial velocity, and acceleration, the displacement can be calculated using the second equation of motion. The second equation of motion is,

s=u*t+(1/2)*a*t^2

Here, u=25 m/sec, a=-25 m/sec and t=2.0 sec.

Put the values in the formula and calculate the displacement.

s= (25)*(2.0)+(1/2)*(-25)*(2.0)^2

s=50-50

s=0 m.

Hence the displacement of the ball is zero.

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Answer:

i belive it is R 24

Explanation:

may i be marked brainliest?

Answer:

220 seconds

Explanation: