a control rod 100 cm long is worth 75 cents when it is totally inserted. a. how much reactivity is introduced into the reactor when the rod is pulled one-quarter of the way out? b. at what rate is reactivity introduced at this point per cm motion of the rod?

The ultimate fate of an isolated pulsar is determined by a combination of various physical processes that act on it over time.

The ultimate fate of an isolated pulsar depends on various factors such as its mass, rotation speed, and magnetic field strength. If the pulsar has a low mass, it may eventually spin faster and become a millisecond pulsar.

However, if it has a high mass, it may explode as a supernova, releasing huge amounts of energy and leaving behind a neutron star or a black hole.

In some cases, if the magnetic field weakens and the pulsar slows down, it may become invisible. As the neutron degeneracy pressure overwhelms gravity, the pulsar may eventually transform into a white dwarf.

Alternatively, the neutron degeneracy pressure may eventually overwhelm gravity, and the pulsar will slowly evaporate.

Overall, the ultimate fate of an isolated pulsar is determined by a combination of various physical processes that act on it over time.

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The density of SO₃ gas at 25 °C and 715 Torr is 3.08 g/L.

We want to calculate the density of SO₃ gas at 25 °C and 715 Torr.

Density (ρ) is the ratio of the mass to the volume of a substance.

If we assume ideal behavior, we can calculate the density of SO₃ using the following expression.

ρ = P × M / R × T

where,

To apply this formula, we need to convert 25 °C to Kelvin using the following expression.

K = °C + 273.15 = 25 °C + 273.15 = 298 K

The density of SO₃ is:

ρ = P × M / R × T

ρ = 715 Torr × (80.06 g/mol) / (62.4 mmHg.L/mol.K) × 298 K = 3.08 g/L

The density of SO₃ gas at 25 °C and 715 Torr is 3.08 g/L.

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Answer  34

Explanation:

Answer:

The dog moved 6 meters west and 34 meters total

Explanation:

The minimum size of a 2-ft deep, square reinforced concrete spread footing required to support a concentrated column load of 610 kips can be calculated using the following steps:

Determine the maximum bearing pressure: The maximum bearing pressure is the column load divided by the area of the footing. In this case, the column load is 610 kips. Since the footing is square, the area of the footing is the square of its side length.

Convert the column load to pounds: 1 kip is equal to 1,000 pounds. Therefore, the column load of 610 kips is equal to 610,000 pounds.

Calculate the side length of the footing: Divide the column load by the maximum allowable bearing pressure to find the required area of the footing. Then, take the square root of the area to find the side length of the square footing.

You can calculate the minimum size of the square reinforced concrete spread footing by dividing the column load by the maximum allowable bearing pressure, converting the load to pounds if necessary, and then finding the square root of the resulting area to determine the side length of the footing.

To calculate the minimum size of the footing, divide the column load by the maximum allowable bearing pressure. Then, convert the load to pounds and find the square root of the resulting area to determine the side length of the footing.

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Answer:

\(\boxed{m = 162.16 kg}\)

Explanation:

Given:

Weight = W = 600 N

Acceleration due to gravity = g = 3.7 m/s²

Required:

Mass = m = ?

Formula:

W = mg

Solution:

For m, it'll be

=> m = W/g

=> m = 600/3.7

=> m = 162.16 kg

Answer:

Explanation:

Weight (w) = Mass (m) x Acceleration due to gravity (g)

weight = 600 N

g = 3.72076 ms^-2

m = w / g

m = 600 / 3.72076

m = 161.25737752502176974596587793892 kg

m ≈ 161.3 kg

Explanation:

Given:

distance between two sphere =0.35 m

Electrical repel force =0.035 N

Electrical repel force after connecting wire =0.055 N.

The electrical force between the two spheres:

\(F=k \frac{q_{1} q_{2}}{r^{2}}\)

The electrical force between the two spheres after the wire is attached and removed:

\(F=k \frac{q^{2}}{r^{2}}\)

\(q^{2}=\frac{F r^{2}}{k}\)

\(q=r \sqrt{\frac{F}{k}}=0.35 \times \sqrt{\frac{0.055}{8.99 \times 10^{9}}}=6.46 \times 10^{-7} \mathrm{C}\)

So the total charge of the two spheres \(=2 q=2 \times 6.46 \times 10^{-7}=1.29 \times 10^{-6} \mathrm{C}\)

Then before connecting the wire, one sphere charge was \(q\( and the charge of the other sphere was \(\left(1.29 \times 10^{-6}-q\right)\)

The electrical force between the two spheres before connecting the wire:

\(F=k \frac{q\left(1.29 \times 10^{-6}-q\right)}{r^{2}}\)

\(q\left(1.29 \times 10^{-6}-q\right)=\frac{F r^{2}}{k}=\frac{0.035 \times(0.35)^{2}}{8.99 \times 10^{9}}=0.348 \times 10^{-12}\)

\(-q^{2}+\left(1.29 \times 10^{-6}\right) q-\left(0.348 \times 10^{-12}\right)=0\)

\(-q^{2}+\left(1.29 \times 10^{-6}\right) q-\left(0.348 \times 10^{-12}\right)=0\)

Answer: He's a superhero in a fictional world

Explanation: Superheroes, such as Superman and Flash, defy physics because they were created as a form of entertainment. The DC world isn't realistic. Don't think too much on it.

Answer:

Long short

Explanation:

1

Dogs that are bigger are selected to be parents.

2

The parents are bred together, and their offspring will be different sizes.

3

The biggest offspring will be selected and bred together.

4

This cycle continues until the dogs have been selectively bred to be bigger than the current world record size.

5

Selective breeders need to ensure that they are not also selecting for disadvantageous traits, like genetic limb defects.

Ur gonna need this...

Brainliest plzzz..thanks..sorry Messy

Answer:

Geological and atmospheric changes happening over a long time scale can cause short extinctions.

Explanation:

Answer:

Flexibility

Explanation:

When you sit down, with your legs straight, and reach, you are stretching out muscles in your legs, such as your hamstrings. This would be considered flexibility.

~theLocoCoco

Answer:

i got 6

Explanation:lmk if i’m wrong

The peak power consumption, maximum current, and minimum current are all equal to 0.83A.

Ohm's law states that P = I x V and that I = P/V,

which means that, using different values,

I = 100/120 = 0.83A.

By dividing the wattage by the voltage, one may easily calculate the amps. Therefore, if the lighting fixture you are working with has a wattage of 60 and a voltage of 12, you would divide 60 by 12 to get five, which is the amps.

The letter I is used to represent current. According to Ohm's equation, V = IR, the current flowing through a conductor is proportional to the voltage V and resistance R.

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Given,

The volume of a gas varies inversely as the pressure on it. If the volume is 240 cm³ under a pressure of 30 kg/cm².

To find,

What pressure has to be applied to have a volume of 160 cm³.

Solution,

ATQ,

Volume of a gas is inversely proportional to the pressure. Mathematically,

\(V\propto \dfrac{1}{P}\)

or

\(V_1P_1=V_2P_2\)

We have, V₁ = 240 cm³, V₂ = 160 cm³, P₁ = 30 km/cm², P₂=?

\(P_2=\dfrac{V_1P_1}{V_2}\\\\P_2=\dfrac{240\times 30}{160}\\\\P_2=45\ kg/cm^2\)

So, the new pressure is \(45\ kg/cm^2\).

Answer:

This question is incomplete, as it lacks options. The options are:

A. chemical energy is the same and additional energy is produced as heat and light.

B. chemical energy is more than the amount of heat and light

C. the amount of chemical energy is less than the amount of heat and light energy

D. the amount of chemical energy equals the amount of heat and light energy.

The answer is D

Explanation:

According to the first law of thermodynamics, which is the LAW OF CONSERVATION OF ENERGY, energy is neither created nor destroyed but can only be changed from one form to another. This law states that no energy in a system is lost, hence, the input energy must be equal to the output energy.

When a log of wood is burnt, the chemical energy stored in it is converted to heat energy and light energy. Based on the law of conservation of energy, the amount of chemical energy present in the log before the burning process must equal the amount of light and heat energy it changed to after the burning process.

That is, chemical energy = light energy + heat energy.

Answer:

Zero - 5 protons and 5 electrons cancel each other chargewise

The electrical charge of the given atom is zero (0).

The electrical charge of an atom is determined by the number of protons and electrons. Protons carry a positive charge (+1), while electrons carry a negative charge (-1). Neutrons are electrically neutral and do not contribute to the overall charge of the atom.

In this case, the atom has 5 protons and 5 electrons. Since the number of protons is equal to the number of electrons in a neutral atom, the positive charge from the protons is balanced out by the negative charge from the electrons, resulting in an overall electrical charge of zero (0).

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The work  was done to move the block  across the floor  is 400 Joule.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

A spring balance can be used to calculate the Force. The Newton is the SI unit of force.

Force applied on the block: F = 40 N.

Displacement of the box = 10 m.

Hence, work  done to move the block = Force × Displacement

= 40 × 10 joule

= 400 joule.

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The graph points are described below.

What is kinetic energy ?

The movement of an object or a subatomic particle exhibits the kinetic energy, often known as the energy of motion. Every atom and object in motion contains kinetic energy. Kinetic energy is present whenever something moves, such as when a person walks, a baseball soars through the air, a piece of food falls from a table, or a charged particle moves in an electric field.

What is potential energy ?

A sort of energy that can be stored but is reliant on the locations of various system components in relation to one another is known as potential energy. A spring gains potential energy when it is stretched or compressed.

P.E= 1/2Kn²

K.E = 1/2 mv²

since the sum will be always constant

At point A.E. is the maximum displacement and the minimum kinetic energy

At point C displacement is maximum so kinetic energy is maximum

At point, B, D it sum of both since displacement is just half of the maximum

so half of the P.E will be converted to K.E.

Therefore, graph points are described below.

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The magnetic field's magnitude is.

What exactly is magnetic flux?

Magnetic flux is a measurement of the intensity of a magnetic field as it passes through a certain surface. It is defined as the product of the surface area and the magnetic field component perpendicular to the surface. This may be stated mathematically as:

Φ = B * A * cosθ

Where is the magnetic flux, B is the magnetic field magnitude, A is the surface area, and is the angle formed by the magnetic field and the surface normal.

The International System of Units, i.e., the SI unit of magnetic flux, is commonly measured in webers (Wb). In a single-turn circuit, one weber is equal to the flux that creates an electromotive force of one volt.

Depending on the issue:

The magnetic flux across a surface is defined as the product of the surface area, the magnetic field component perpendicular to the surface, and the cosine of the angle between the magnetic field and the surface normal. This may be stated mathematically as follows:

Φ = B * A * cosθ

Where is the magnetic flux, B is the magnitude of the magnetic field, A is the surface area, and is the angle between the magnetic field and the surface normal.

In this situation, the surface area is 3 square cm, and the magnetic flux is 0.9 mwb. Use the following values to calculate the magnitude of the magnetic field:

As a result, the magnetic field magnitude is 0.34 mwb/cm^2.

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Answer:

Explanation:

Density = mass / volume

density = 2.4

volume = 100 cm^3

2.4 = m / 100     Multiply both sides by 100

2.4 * 100 = m

m = 240 grams

Answer: A solid can be converted to a liquid by heating, a liquid can be converted to a solid by cooling.

Answer:

U-235

Explanation:

a rare needed compound

Answer:The net force acting on the car is 3×103 Newtons

Explanation:

Latest news: NASA and SpaceX announce plans for a joint lunar mission. The mission, called Artemis 3, aims to land the first woman and the next man on the moon by 2024.

SpaceX's Starship will be used as the lunar lander.

NASA and SpaceX have been working together to advance space exploration. The Artemis 3 mission is part of NASA's Artemis program, which aims to establish a sustainable human presence on the moon and prepare for future crewed missions to Mars. By partnering with SpaceX, NASA aims to leverage the company's expertise in space transportation and technology.

The use of SpaceX's Starship as the lunar lander marks a significant shift in lunar exploration. The Starship is a fully reusable spacecraft designed to carry both crew and cargo to destinations like the moon and Mars. Its large payload capacity and versatility make it an ideal choice for lunar missions.

Artemis 3 will not only land astronauts on the moon but also serve as a stepping stone for future missions, including the establishment of a lunar outpost and the utilization of lunar resources. It represents a crucial milestone in humanity's journey to explore and potentially inhabit other celestial bodies.

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A rocket sled moves along the horizontal plane under the presence of a friction force µmg, where m is the mass of the sled at that moment and µ is the coefficient of kinetic friction.The rocket propels itself by ejecting mass at a constant rate dm/dt = −R, and the fuel is ejected at a constant speed u relative to the sled.

The sled starts from rest with initial mass M, and stops ejecting fuel when half the mass has been expended. A)The sled’s motion can be studied by using the second law of motion, i.e., F = ma. It shows that if an unbalanced force acts on an object, then it accelerates. In this case, the sled has friction, so its motion is under the influence of an unbalanced force.The force equation can be written as:F = m dv/dtwhere F is the net force on the sled, m is the sled’s mass, and dv/dt is the acceleration.

We know that the sled is being propelled by ejecting mass at a constant rate dm/dt = −R. So, the force equation can be written as: F = −R(dv/dt)Also, F = µmg, so µmg = −R(dv/dt)This equation can be solved to get the sled’s velocity as a function of time. After solving it, we get:

v(t) = u ln [M/(M/2 - Rt)] - µgt

where u is the ejection speed of fuel relative to the sled and g is the acceleration due to gravity. We can use this equation to find out how long it takes for the sled to finish ejecting fuel. The sled stops ejecting fuel when half of its mass has been expended, so the mass of the sled at that moment is M/2. Hence, we can write the equation as:

M/2 = M - Rt

The sled’s mass is decreasing with time, so t = (M - M/2)/R = M/2R. Therefore, the time taken by the sled to finish ejecting fuel is M/2R.

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In this experiment, room temperature would be the independent variable.

The independent variable is the factor that is being manipulated or changed by the researcher in an experiment.

In this case, the researcher, Dr. Gonzalez, is interested in measuring how changes in room temperature affect a student's ability to focus in class.

To conduct the experiment, Dr. Gonzalez would need to manipulate the room temperature, for example by adjusting the thermostat, while keeping all other variables constant.

The dependent variable, on the other hand, is the variable that is being measured or observed and is expected to change as a result of the independent variable.

In this case, the dependent variable would be the students' ability to focus in class.

Dr. Gonzalez could measure this by using a standardized test or by observing the students during class and noting any changes in their behavior or performance.

As with any scientific experiment, it's important to control for any extraneous variables that could affect the results.

In this case, Dr. Gonzalez would need to ensure that all other factors that could affect a student's ability to focus (such as noise level, lighting, or time of day) are kept constant throughout the experiment.

By manipulating the independent variable (room temperature) while keeping all other variables constant, Dr. Gonzalez would be able to determine whether changes in room temperature have a significant impact on students' ability to focus in class.

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Answer:

He provided mathematical support for the heliocentric model.

Johannes Kepler  provided mathematical support for the heliocentric model.

The orbits of planets around the Sun are described by Kepler's laws of planetary motion, which he published between 1609 and 1619.

The laws replaced the circular orbits and epicycles of Nicolaus Copernicus' heliocentric theory with elliptical trajectories and provided an explanation for the variation in planetary velocities.

As per the three laws:

Hence, Johannes Kepler  provided mathematical support for the heliocentric model.

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Answer:

B

Explanation:

selenium is the right answer.

Answer:

Can't see the pic

Explanation: