the home owner report that sometimes the electric furnace trip the 240-v 60-a circuit breaker connected to it

Scientists discovered that the inner core of Earth is solid. The enormous pressure of the inner core—the entire planet and its atmosphere—prevents the iron from melting regardless of the fact that it is under very high temperatures. The pressure and density are simply too high for the iron atoms to become liquid.

The core is primarily iron (80%) with a little nickel. The inner solid core has a density of 9.9-12.2 g/cm3, whereas the outer core has a density of 12.6-13 g/cm3.

The magnetic field on Earth is created by the core of the planet. The core holds information about the planet's early history of accretion. When the core developed, several thermal and compositional traits were created that governed the core's continued evolution.

Not only does the Earth's mainly iron core likely play a part in the movement of continents over millions of years, but it also plays a significant role in the preservation of life here: Our planet's roiling iron core helps to maintain the Earth's magnetic field, which protects life on the surface from harmful solar energy.

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Answer:

Science of Genetics..

Explanation:

Through his careful breeding of garden peas, Gregor Mendel discovered the basic principles of heredity and laid the mathematical foundation of the "science of genetics".

Gregor Johann Mendel related to the science of genetics.

Gregor Johann Mendel was an Austrian monk and scientist born on July 20, 1822, and died on January 6, 1884. Mendel is known for his groundbreaking work on pea plants, which led him to discover the fundamental laws of inheritance, known as Mendelian genetics.

He conducted a series of experiments on pea plants in the mid-19th century, observing the transmission of traits from one generation to the next and discovering the principles of dominant and recessive inheritance. Mendel's work was largely unrecognized during his lifetime but later became the foundation of modern genetics and greatly influenced the development of the field of biology.

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Answer:

The speed of sound is the distance traveled by sound per unit time, which is 347.0 m/s. The hiker hears the echo return 2.0 seconds later, which means that the sound traveled twice the distance between the hiker and the rock wall.

Let d be the distance between the hiker and the rock wall. Then, the total distance traveled by sound is 2d (the sound traveled from the hiker to the rock wall and back).

Using the formula distance = speed x time, we can write:

2d = speed x time taken

2d = 347.0 m/s x 2.0 s

2d = 694.0 m

Dividing both sides by 2, we get:

d = 347.0 m/s x 2.0 s / 2

d = 347.0 m

Therefore, the distance between the hiker and the rock wall is approximately 347.0 meters

Explanation:

Bro Mark me As Brainliest I got it ASAP

Answer:

Explanation:

How did media attention affect Barack Obama's presidential performance?(A)(B)(C)(D)He made a concerted effort to listen to Congress' concerns about his policies.He decided to go on Fox News in an attempt to win over Republican voters.He started traveling the country to give speeches about his policy goals.He began meeting in private with Speaker of the House Nancy Pelosi.

Two athletes are competing in upcoming competitions, a weightlifting meet and a marathon. phosphagen and oxidative energy systems will each be primarily used, respectively.

As it is in charge of high-intensity, brief-duration activity, the phosphagen energy systems generate energy for jumping and sprinting. The quickest and most effective energy producer in muscle activity. Phosphagen metabolism is demonstrated by this system. It uses creatine phosphate to produce ATP (adenosine triphosphate, the chemical which provides energy for all body processes).

Energy is produced by the oxidative energy systems using 30% and 70% of carbs and lipids, respectively. When done for at least 150 minutes a week, aerobic exercise enables the body to experience physiological and health benefits.

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Answer: 18 m/s/s

Explanation:

3 times 6 equals 18 and 3 seconds every second makes this equation

The two main mechanisms involved in sea level rise are thermal expansion and the melting of land-based ice. Hard defenses can provide protection against rising sea levels and coastal erosion for the communities located directly behind them, they can have potential impacts on neighboring communities.

As the Earth's oceans absorb heat from the atmosphere, the water expands thermally, leading to an increase in sea level.

Melting of land-based ice refers to the melting of glaciers and ice sheets, such as those in Greenland and Antarctica.

Under the RCP8.5 scenario, which represents a high greenhouse gas emissions trajectory, the dominant mechanism of sea level rise is expected to be the melting of land-based ice.

The increased temperature and subsequent accelerated melting of ice sheets and glaciers would contribute significantly to rising sea levels.

Hard defenses can provide protection against rising sea levels and coastal erosion for the communities located directly behind them, they can have potential impacts on neighboring communities.

Some of these impacts include Increased erosion, altered wave patterns, loss of coastal access, coastal squeeze, and visual and aesthetic impact.

It is essential to consider these potential impacts on neighboring communities when evaluating the suitability and long-term effects of implementing sea walls as coastal protection measures.

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The position of the image relative to the mirror v = 20cm, position of the image behind the mirror.

Since object is always placed in front of the mirror

Hence, object distance will be negative

Object distance (u) = - 100cm

Focus of a convex mirror is behind the mirror

Hence focal length will be positive

Focal length (f)= + 25cm

Find position of the image

Let the image distance = v

Using formula,

\(\frac{1}{v}\) +\(\frac{1}{u}\) = \(\frac{1}{f}\)

\(\frac{1}{v}\) = \(\frac{1}{f} - \frac{1}{u}\)

\(\frac{1}{v} = \frac{1}{25} - \frac{1}{-100}\)

\(\frac{1}{v} = \frac{1}{25} + \frac{1}{100}\)

\(\frac{1}{v} = \frac{4 + 1}{100}\)

\(\frac{1}{v} = \frac{5}{100}\)

v = \(\frac{100}{5}\)

v = 20cm

Since v is positive

Hence, image is 20cm behind the mirror

Nature of image is Virtual and erect.

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Answer:

greater.

Explanation:

Please mark as brainliest

Answer:

C. is correct.

Explanation:

Hope this helps :)

The suggestion given by Hannah is not a well-supported and widely accepted explanation. So, option A is correct.

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion. Automobile engines use about 20% of their output to overcome frictional forces in moving parts.

The adhesion forces between the contact zones of the surfaces, which are always microscopically uneven, appear to be the primary cause of friction between metals. Shearing these "welded" joints and the action of the tougher surface's imperfections scrubbing against the softer surface cause friction.

According to the question, Hannah is driving the car up a hill and when she is not pressing the accelerator the car slows down. The reason behind this is that there is an ascent of height that the car has to climb with its engine power and if the accelerator is not applied to it then it will start to slow down also friction is a factor that is involved in this case.

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Two forces that make up electromagnetic forces related both the electric and magnetic forces are caused by the motion of charged particles such as electrons and is therefore denoted as option C.

This is referred to as the type of force which explains how both moving and stationary charged particles interact due to it occurs between electrically charged particles such as a

The electric and magnetic forces which are present are usually caused by the motion of charged particles such as electrons which is therefore the reason why option C was chosen as the correct choice.

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Answer:

500Km

Explanation:

This question is an example of speed, distance, time.

The formula for working out the distance is: \(Speed*Time\)

To work this out you would need to multiply the speed of 200Km/h by the time of 2.5 hours, this gives you 500 Km. This is because the formula to work out the distance is speed * time.

In adittion, if the train is traveling at 200km per hour then that means that over the course of an hour the distance travelled would be 200Km. So, by multiplying the speed by the time you are working out how far it travelled in that given time.

1) Multiply 200 by 2.5.

\(200*2.5=500Km\)

Answer:

2,3

Explanation:

2,3      3 is the definition of Archemedes' Principle

Answer:

answere is very easy

answere is

Correct option is D)

Overall momentum of the system is conserved.

Therefore, change in momentum of the rocket will be equal to that of the fuel.

Change in momentum of the fuel will be

Δmv=60000

Hence, change in momentum of the rocket will also be:

△P=60000

Thrust force F=

△t

△p

​

F=60000 N

When striking two tuning forks with frequencies of 340 Hz and 342 Hz, we will hear beats, which are periodic variations in sound intensity. The beat frequency can be calculated by taking the absolute difference between the two frequencies, resulting in a beat frequency of 2 Hz.

When two sound waves of slightly different frequencies interfere with each other, they produce beats. Beats occur due to the superposition of waves with similar amplitudes and slightly different frequencies. In the case of sound waves, our response depends on the frequency of the waves.

The beat frequency corresponds to the difference between the frequencies of the two tuning forks.

Beat frequency = |frequency1 - frequency2|

Beat frequency = |340 Hz - 342 Hz|

Beat frequency = 2 Hz

Striking tuning forks with frequencies of 340 Hz and 342 Hz will result in the perception of beats with a frequency of 2 Hz. This phenomenon occurs due to the interference of sound waves with slightly different frequencies. In contrast to electromagnetic waves, where our response depends on factors like amplitude and wavelength, our perception of sound depends primarily on the frequency of the waves.

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The best way to describe sound levels is through a ratio scale.

The decibel scale, which measures sound levels, is best described as a ratio scale. While the decibel scale is logarithmic, it can be transformed into a linear ratio scale by using a reference point. By selecting a reference point as the softest sound the human ear can hear unaided (0 dB), we establish a meaningful zero point on the scale. Any sound level above this reference point can be expressed as a positive value, indicating its magnitude relative to the softest audible sound. The logarithmic nature of the decibel scale still holds, with each increase of 10 dB representing a tenfold increase in sound intensity. However, by anchoring the scale to a fixed reference point, we can now quantify and compare sound levels in a meaningful way, making it a ratio scale.

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Answer:

Coefficient of friction (COF) is a dimensionless number that is defined as the ratio between friction force and normal force (Eqn (2.1)). Materials with COF smaller than 0.1 are considered lubricous materials. COF depends on the nature of the materials and surface roughness.

Explanation:

Answer:

0 N

Explanation:

suppose, you push a box with 5 N, and another person pushes the box on the opposite side of the box with 5 N, the net force (resultant ) is 0 N, the box will not move if it wasn't moving

hope this helps

Answer:

1. is held

2. was

3. be cancelled

4. has been moved

5. is being filmed

Explanation:

If you read them out, you can find out which ones flow the best! Hope this helps!

Answer:

The derivation of the field intensity in the dipole at the point of equatorial plane is the result of the horizontal line.

Explanation:

The equatorial line of an axis on dipole is define as the line is perpendicular at the axial line and to pass from the mid way between the charges at both the poles.

The result of this intensity is the vector sum of the intensities with the PA and PB. The line EA and The line EB can be resolved into horizontal and the vertical components.

The vertical components of dipole cancel to each other because they both equally or opposite directed.

The horizontal line up gives the result of the dipole at the point of the equatorial.

Answer:

The two helicopters have the same kinetic energy, but a different GPE, or gravitational potential energy.

Explanation:

If the voltage source or EMF is removed from a conductor, the electron flow within the conductor will eventually stop.

This is because the voltage source creates an electric field that causes the free electrons in the conductor to move, creating an electric current. When the voltage source is removed, the electric field disappears, and the free electrons in the conductor will no longer have a driving force to move them. As a result, the electrons will begin to lose energy and eventually come to a stop, leading to the cessation of the electric current.

It's worth noting that the time it takes for the electron flow to stop depends on various factors such as the resistance of the conductor, the capacitance of the circuit, and the amount of charge stored in any capacitors present in the circuit.

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Answer:

metamorpic rock

Explanation:

it has a crystallin textures

Answer:

the answer is C a material or substance

Explanation:

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The correct answer is(b). There is a physical change from the solid state to a gas state where energy between the molecules increases.

During sublimation, carbon dioxide transitions directly from the solid state (dry ice) to the gas state without passing through the liquid phase. In this process, individual molecules of carbon dioxide gain energy from the surroundings, leading to an increase in their kinetic energy and molecular movement.

As a result, the carbon dioxide molecules separate from each other and form a gas. This phase change is considered a physical change rather than a chemical change since the chemical composition of carbon dioxide remains the same throughout the process.

Therefore, the sublimation of carbon dioxide results in a physical change where the molecules transition from the solid state to the gas state, gaining energy and increasing their molecular movement.

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Answer:

Aluminium

Explanation:

The heat capacity for Aluminium is greatest and so it retains heat longer hence its the best conductor of heat.

Answer:

i dont undertsnad what do u ned hep wit?

Explanation:

Answer:

A

Explanation:

because you usually have a function such as    y = 2 x^2 +3x + 6

  or  y = 3x -12   or similar .....y DEPENDS on what 'x' is....