Find the equivalent resistance and the current in each resistor

Answer:

B. 12.0A

Explanation:

The circuit shown in the image is a parallel circuit which mean that the voltage of the source is equal across each resistance in the circuit because they are directly connected to the terminals of the voltage source.

The voltage across the 10 Ohms resistor is 120V

So, let's proceed to calculate the current

By using Ohm's Law

[tex]I=\frac{V}{R} \\I= \frac{120.0V}{10.0Ohm} \\I= 12.0A[/tex]

12A is the amount of current flowing through the 10 ohms resistor.

Current = (voltage) / (resistance)

The ends of the 10-ohm resistor are connected directly to both terminals of the battery.  

So the voltage across the resistor is the voltage of the battery ... 120 V.  None of that other stuff in the circuit has any effect on it.

Current = (120 V) / (10 ohms)

Current = 12 A .  (B)

Answer: c) an open series circuit

Explanation:

this is because the key is open

The electric current is measured in coulombs per second. A flow of one coulomb per second is called one ampere

The electric current is the flow of electrons which are negatively charged particles.

 Explanation:

The flow of electrons in a circuit is called the electric current. It is measured with one coulomb of charge across the circuit in 1 second that is called an ampere. This ampere is the standard unit of electric current.

The flow of electrons across the circuit is achieved by the potential difference across the circuit. This potential difference is the difference of electrical voltage generated across the circuit in order to achieve flow of current.

Sound waves my dude

Sound waves and visible light require a medium to travel.

A disturbance or variation in a medium that transports energy from one point to another and can take the form of elastic deformation or a change in pressure, electric or magnetic intensity, electric potential, or temperature.

Sound waves need a medium, such as air, water, or solids, to propagate and be heard. They are caused by the vibration of a material and the transfer of this vibration through the medium.

Visible light also requires a medium to travel, although it can travel through a vacuum, such as space. In a vacuum, light travels at its fastest speed and does not encounter any resistance. In a medium, such as air, glass, or water, light travels more slowly and is refracted or bent.

Microwaves and X-rays do not require a medium to travel. Microwaves are a type of electromagnetic radiation that can travel through a vacuum, such as the space between the Earth and a satellite, as well as through solids, liquids, and gases. X-rays are also a type of electromagnetic radiation that can travel through a vacuum and penetrate materials that are opaque to visible light.

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The answer true I’m guessing. It’s a 50/50 chance

Answer:

Explanation:

There seems to be a typo in the problem statement.  It says the spring stretches to a shorter length after more mass is added.  Please check the problem statement.  I'm going to do the calculations assuming that the first length should be 11.80 cm and the second length should be 12.05 cm.

Hooke's law states that the force needed to compress or extend a linear spring is:

F = kΔx, where k is the stiffness and Δx is the displacement.

When a 20g object is placed in the pan, the spring stretches to a length of 11.80 cm.  The force of the spring is counteracting the weight of both the pan and the object. Therefore:

(m + 0.020) g = k (0.1180 - 0.100)

And when another 30g object is placed in the pan, the spring stretches to a length of 12.05 cm.

(m + 0.020 + 0.030) g = k (0.1205 - 0.100)

We now have two equations and two variables.  If we divide the second equation by the first equation:

(m + 0.050) / (m + 0.020) = (0.1205 - 0.100) / (0.1180 - 0.100)

(m + 0.050) / (m + 0.020) = 0.02050 / 0.0180

0.0180 (m + 0.050) = 0.02050 (m + 0.020)

0.0180 m + 0.0009 = 0.02050 m + 0.00041

0.00049 = 0.0025 m

m = 0.196

The pan has a mass of 0.196 kg, or 196 g.

Answer:

It allows a mobile phone to store data

Answer:

store data

Explanation:

The safety measures include wearing appropriate safety gear, slow and even heating, not leaving the experiment unattended, allowing the test tube to cool gradually after melting, and appropriate disposal.

Determining the melting point of naphthalene through a cooling curve requires adherence to numerous safety precautions. The most crucial is to use safety equipment appropriately, such as wearing protective goggles, a lab coat, and gloves. Secondly, you must ensure to heat the naphthalene slowly and evenly to prevent it from catching fire as it's flammable. Keep the surrounding area free from flammable materials. In case of a sudden increase in temperature or boiling, turn off the heat source immediately.

Lastly, never leave the experiment unattended. After the naphthalene has melted, let the test tube cool gradually, and do not immerse it in cold water, as it could shatter from thermal shock. Dispose of the melted naphthalene according to your school's laboratory safety protocols.

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By wrapping a conductive wire around a steel nail and adding a battery, you've created what is known as a solenoid. This solenoid produces a magnetic field around the nail when a current is passed through it. There is an equation that relates the various properties of the solenoid together to determine the strength of the magnetic field; in short, to increase the strength, you can shorten the overall length of the coiled wire (not the wire itself, but the length of the coil around the nail), increase the current flowing through the wire, or increase the number of turns/loops of wire around the nail.

Hope this helps!

Answer: it is bad for you and can cause some crazy brain dammage and this could potentially end you life because it is harmful :p

Answer:

A. 98,000 J

Explanation:

The gravitational potential energy of an object is given by

U = mgh

where

m is the mass of the object

g is the gravitational acceleration

h is the heigth above the ground

In this problem,

m = 2000 kg

g = 9.8 m/s^2

h = 5.0 m

Substituting into the equation, we find

[tex]U=(2000 kg)(9.8 m/s^2)(5.0 m)=98,000 J[/tex]

Answer:

0 J

Explanation:

the object isn't moving, there is no kinetic energy. This question is worded poorly and made this not obvious.

Answer: Shield volcano is a broad, gently sloping, explosive volcano which is comprised of basaltic magma.

Shield volcano is normally not explosive but if somehow water comes in contact with this basaltic magma, then it turns into a more violent, explosive volcanoes, producing pyroclastic materials such as lapilli, lava bombs and block.

An explosive eruption from a shield volcano can be caused by the trapping of gases in highly viscous magma, leading to a buildup of pressure and a violent explosion.

The eruption from a shield volcano can become explosive if there is a sudden release of trapped gases within the magma. This occurs when the magma is highly viscous, preventing the gases from escaping easily, and pressure builds up. Eventually, the pressure becomes too great and results in a violent explosion.

An example of an explosive eruption from a shield volcano is the 1790 eruption of Kilauea in Hawaii. The eruption sent ash, rocks, and gas high into the air, causing widespread damage and creating a large crater.

To summarize, an explosive eruption from a shield volcano can be caused by the trapping of gases in highly viscous magma, leading to a buildup of pressure and a violent explosion.

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The correct option is D

hope that helped?

Answer: is B

Explanation:

Concave and Diverging lens are used to correct nearsightedness.

Answer: Option A & C

Explanation:

There are two main problems in eyesight which are nearsightedness also known as myopia which is the inability to see the objects that are far away and farsightedness where the person suffers the inability to read without correction to eyesight.  

In this case, objects which are near can be seen properly whereas distant objects are blurred and so the person need correction in eyesight either by glasses or Concave lens and Diverging lens. It is the best suited option for those cases.

The kind of lenses used to correct nearsightedness is A.) Concave and B.) Converging.

Nearsightedness, also known as myopia, is an eye condition where the light rays from distant objects are focused in front of the retina instead of on the retina. This causes distant objects to appear blurry.

Concave lenses are used to correct nearsightedness because they diverge the light rays, which helps to bring them into focus on the retina. Converging lenses are also used to correct nearsightedness, but they are less common.

Therefore, the correct answers are A.) Concave and B.) Converging.

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Answer:

The definitive and unifying theme or idea of a story or article. It encompasses all the aspects necessary to create a coherent main idea. The central idea is typically expressed as a universal truth or theme that is built and supported by the setting and characters in a story.

Explanation:

This is the correct answer to your question.

Hope this helps!!!

Kyle.

Answer:

The correct answer is - Damage to the nerves that control the diaphragm.

Explanation:

Abdominal breathing is a condition in which inferior half of the lungs can be seen relaxing or contracting and expanding with the breath. This condition occurs due to the various conditions that lead to the respiratory.

It is cause due to the damage to nerves that control the diaphragm. The phrenic nerve is one of the nerve of diaphragm initiates in the neck and passes down.

Thus, the correct answer is - Damage to the nerves that control the diaphragm.

The phrenic nerve is a nerve that originates in the neck (C3–C5) and passes down between the lung and heart to reach the diaphragm.

Answer:

A. Damage to the nerves that control the diaphragm

Explanation:

Kinetic Energy = 1/2 * mass * velocity^2

Mass = 0.1 kg

Velocity = 20 m/s

Kinetic energy = 1/2 * 0.1 * 20^2

Kinetic energy = 1/2 * 0.1 * 400

Kinetic energy = 20 J

Answer:

Negative feedback is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus. Often it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostatis.

Explanation:

The negative feedback of an endocrine system decreases the output and tends to maintain the stability of the system.

An internal messenger system that contains feedback loops of hormones released by the internal glands of an organism. These hormones go directly into the circulatory system to regulate distantly target organs.

Negative feedback is a part of the endocrine system. It is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus. Often it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostasis.

Thus, we can conclude that the negative feedback of an endocrine system decreases the output and tends to maintain the stability of the system.

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Answer:

2000 mg are in 2 g

Explanation:

Answer:

2000 mg are in 2 g

hope this helps pls make this the brainliest

Answer:

Yes, there are  actually a few apps that are capable of such requests.

Explanation:

Picture Math is one of the many out there.

Hope this helps!

In the Lindbergh kidnapping case, linguistic methods like analyzing spelling errors and language patterns in the ransom note were critical to identifying the kidnapper, showcasing the interplay between language and forensic science.

The Lindbergh kidnapping case involved linguistic analysis to help identify the kidnapper, highlighting the significance of language in forensic investigations. Linguists and experts analyzed the ransom note for spelling errors and peculiar language use, which can reveal regional or foreign linguistic traits, potentially pinpointing the origins or characteristics of the writer. These investigative techniques, examining the language patterns and grammatical nuances, provided clues to the kidnapper's identity similar to how Broca suggested Leborgne's limited speech was linked to the tanneries of his hometown in Moret-sur-Loing, reflecting how personal history and environment impact language use. The case is an example of how awareness of linguistic details can be a powerful tool in criminal investigations, demonstrating the depth at which language intertwines with cultural identity and personal history.

Answer:

Because of the buoyant force

Explanation:

Jumping into a pool change the amount of apparent gravity acting on a person.

Normally, for a person in free fall, the weight of the person is given by:

[tex]F=mg[/tex]

where m is the mass of the person and g=9.8 m/s^ is the acceleration due to gravity.

When a person is in the water, there is a buoyant force pushing the person upward. The magnitude of the buoyant force is

[tex]B=\rho_w V g[/tex]

where

[tex]\rho_w[/tex] is the density of the water

V is the volume of displaced fluid

g is the acceleration due to gravity

So the net force acting on the person is

[tex]F= mg - \rho_w V g[/tex] (1)

Since V corresponds to the volume of the person, we can rewrite it as

[tex]V=\frac{m}{\rho_p}[/tex]

where [tex]\rho_p[/tex] is the density of the person. Substituting into eq.(1),

[tex]F=mg- m \frac{\rho_w}{\rho_p} g = mg - mg'[/tex] (2)

where we called

[tex]g'=\frac{\rho_w}{\rho_p} g[/tex]

So we can further rewrite (2) as

[tex]F=m(g-g')[/tex]

so we see that the gravity acting on the person, g, has been modified into (g-g') due to the presence of the buoyant force.

Answer:

A

Explanation:

because the climate of a place takes a long time or years to change

Final answer:

Local conditions like temperature, atmospheric pressure, wind, and humidity determine the weather in an area, which refers to short-term atmospheric conditions.

Explanation:

The combination of local conditions such as temperature, atmospheric pressure, wind, and humidity determines the weather in the area. Together, these are all components of weather, which refers to the atmospheric conditions during a short period of time. In contrast, climate is the statistical summary of these elements over long periods, affecting and defining the characteristics of a region or biome. Hence, the correct answer to the question is: D. the weather in the area.

Answer: neon atomic 10 hope this helps

Explanation:

Answer:

C.) Neon, atomic number 10

Explanation:

Answer: The trough is the lowest point of a wave while the crest is the highest point of a wave.

Groups of atoms that line up to makes something magnetic

Answer:

Explain that an investigation is observing or studying the natural world, without interference or manipulation, and an experiment is an investigation that involves variables (independent/manipulated and dependent/ outcome) and establishes cause-and-effect relationships (Schwartz, 2007).

Final answer:

Experiments involve controlled manipulation of variables to test a hypothesis, ideal for establishing causation but possibly limited by artificial settings and ethical concerns. Observational studies, on the other hand, involve natural observation without direct interference, which is beneficial for ethical or practical scenarios but can be less definitive in establishing cause-and-effect relationships.

Explanation:

The difference between an experiment and other types of scientific investigations resides in the controlled manipulation of variables. An experiment is a procedure carried out under controlled conditions to test a hypothesis. It typically involves changing one variable (independent variable) to see the effect on another variable (dependent variable), while controlling all other variables.

Another common type of scientific investigation is observational research, which involves making observations of systems or phenomena as they occur naturally. Unlike experiments, observational studies do not involve direct manipulation of variables by the researcher. Instead, researchers observe and record data without interfering.

The benefits of experiments include the ability to establish cause-and-effect relationships due to the control over variables. Limitations might include ethical concerns and artificial settings which may not reflect real-world conditions. Observational studies are beneficial when experimentation is not ethical or practical, offering more natural insights, but they are limited in their capacity to deduce causality due to potential confounding variables.

Summary of the Benefits and Limitations

Answer:

The answer is A.

Explanation:

The flow of the energy in Ellen's motor can be explained as battery→ electrical current → copper wire rotor → magnet → mechanical energy. Therefore, option A is correct.

An electric motor can be described as an electrical machine that transforms electrical energy into mechanical energy. Most electric motors work through the interaction between the magnetic field and electric current in a wire winding to generate force as torque applied on the motor's shaft.

An electric generator can be defined as mechanically identical to an electric motor, but works with a reversed flow of power, transforming mechanical energy into electrical energy.

Electric motors can power by DC sources, such as from batteries, or by alternating current (AC) sources, such as a power grid, or electrical generators.

Electric motors can be classified by considerations such as power source, construction, and type of motion output. They can be powered by AC or DC, single-phase, two-phase, or three-phase, axial or radial flux, and can be air-cooled.

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Answer:

A series circuit

Explanation:

A circuit that has only a single path for current to flow through is best classified into which category?

a series circuit

an open circuit

a parallel circuit

a short circuit

Explanation:

The reason that A ( a series circuit ) is the answer is because in a series circuit, it only allows for current to flow in one single path.

Answer: A series circuit

Explanation: A circuit that has only a single path for current to flow through is best classified into which category?

Answer:

a car decreasing its speed due to a red light

Explanation:

Acceleration of an object is defined as the rate of change in velocity of the object:

[tex]a=\frac{\Delta v}{\Delta t}[/tex]

where

[tex]\Delta v[/tex] is the change in velocity

[tex]\Delta t[/tex] is the time elapsed

Therefore, we have a non-zero acceleration every time there is a change in velocity.

Among the examples given, we notice that only the following one:

"a car decreasing its speed due to a red light"

involves a change in velocity (because the car is decreasing its speed), therefore this scenario involves a non-zero acceleration.

A car decreasing its speed due to a red light is accelerating since there is a change in speed.

Acceleration is the rate of change of speed with respect to time. Acceleration is given by:

Acceleration = change in speed / time

A motorcycle moving at constant speed is not accelerating since there is no change in speed.

A recreational vehicle parked in a campground s not accelerating since there is no change in speed.

A car decreasing its speed due to a red light is accelerating since there is a change in speed.

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