Una carga eléctrica de 120 Coulomb pasa uniformemente por la sección transversal de un hilo conductor durante un minuto. La intensidad de la corriente eléctrica que circula en ese conductor es

Answer:

R = -2500N

Explanation:

Use formula ΣF = Ma. We can split the Net Force into two parts: Fe - Ff  =  Ma.

Fe is the force developed by the engine: 4000N

Ff (R) is the air resistance projected on the vehicle. This is the value we're looking for.

Mass: 1000kg

Acceleration: 1.5m/s^2

Next, just plug in the values and solve.

▪4000N - Ff  =  (1000kg)(1.5m/s^2)

▪Ff = 1500N - 4000N

▪Ff = -2500N

R = -2500N.

The air resistance acting on the car is R = -2500N.

As a result, doubling the voltage doubles the current if the resistance is maintained. In contrast, doubling resistance reduces current if the voltage is constant

The current will drop, on the other hand, if the resistance in a circuit is raised while the voltage remains constant.

As a result, doubling the voltage doubles the current if the resistance is maintained. In contrast, doubling resistance reduces current if the voltage is constant.

Voltage, current, and resistance all have a relationship that is indicated by Ohm's Law. The formula V = IR is something you should be aware of. By dividing the voltage by the resistance, or I = V/R, you may quickly determine the current value from the equation.

V = IR = 120*120 = 14,400.

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Answer:

.

Explanation:

To determine the output power (in watts) of a voltage rail, you need to know both the voltage and the current flowing through the rail. The formula for power (in watts) is P = V x I, where P is power, V is voltage, and I is current. So, if you know the voltage and current of the voltage rail, you can multiply them together to get the output power. Keep in mind that power is measured in watts, voltage is measured in volts, and current is measured in amperes.

To determine the output power (in watts) of a voltage rail, you'll need to know the voltage across the rail (in volts) and the current flowing through it (in amperes). You can use the following formula:
Power (in watts) = Voltage (in volts) × Current (in amperes)
Step 1: Measure the voltage across the rail using a voltmeter.
Step 2: Measure the current flowing through the rail using an ammeter.
Step 3: Multiply the measured voltage and current values to calculate the output power in watts.
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Answer:

28.63 m/s

Explanation:

The tension on the left wire 642N and the tension on right wire is 208N

Given that the force of scaffold is 200- N and the length of the scaffold is 18m

We need to find the tension in each wire

Tension Force is the force that is transmitted through a cable, rope, wire or string when it is pulled tight by forces acting from opposite ends

Here

∑ \(T_b=0\)

∴ \(W_B(15m)+W_S(9m)-T_L(18m) = 0\)

∴ \(T_L = \frac{W_B(15m)+W_S (9m)}{18m}\\ T_L = \frac{650(15)+200(9)}{18}\\ T_L = 642 N\)

Hence the tension on the left side is 642N

∑\(T_a\) = 0

\(T_R(18m)-W_B(3m)-W_S(9m)=0\)

∴\(T_R =\frac{W_B(3m)+W_S(9m)}{18m}\)

∴\(T_R = \frac{650(3)+200(+9)}{18}\\\)

∴\(T_R = 208N\)

Hence the tension on the right side is 208N

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To find the required information, we need to determine the rocket's acceleration during its ascent phase.

We can use the kinematic equation that relates velocity, initial velocity, acceleration, and displacement to solve for the acceleration of the rocket.

Given that the rocket's initial velocity is 0 ft/sec (since it starts from rest at the launch pad) and the displacement is 12,000 ft, we can plug in these values along with the given velocity of 800 ft/sec into the kinematic equation.

Rearranging the equation, we can solve for the acceleration.

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Hi there!

This is an example of a recoil collision.

Using the conservation of momentum:

\(p_i = p_f\)

The initial momentum is 0 kgm/s (objects start from rest), so:

\(p_f = 0\)

We are given that the 15 kg block has a velocity of 12 m/s to the left, so:

\(m_1v_1' + m_2v_2' = 0 \\\\15(-12) + 18v_2' = 0 \\\\\)

Solve for v2':

\(18v_2' = 180 \\\\v_2' = \boxed{10 m/s}\)

The complication of head and neck cancer that would require the nurse to apply firm pressure is bleeding.

Bleeding can occur as a result of invasive procedures or surgery for head and neck cancer. The nurse may need to apply firm pressure to the affected area to control the bleeding and prevent further complications.

Applying firm pressure can help to compress blood vessels and promote clotting, which can be crucial in stopping the bleeding. The nurse may use sterile gauze or a clean cloth to apply the pressure directly to the bleeding site.

In conclusion, if a patient with head and neck cancer experiences bleeding, the nurse may need to apply firm pressure to control the bleeding and prevent complications.

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The sun only appear to pass through the constellations of the zodiac because Over the course of a year, the sun appears to be in front of, or “in”, different constellations due to its orbit .

A group of stars that can be identified with the shape of an identifiable object like an animal or a known object is called a constellation. Major constellations are the Ursa Major, Ursa Minor and Cassiopeia.

Its motion is entirely an illusion, caused by Earth's own motion around our star. Over the course of a year, the sun appears to be in front of, or “in”, different constellations. One month, the sun appears in Gemini; the next month, in Cancer.

If we wanted to (and were endowed with supernatural powers), we could alter Earth's orbit so that the Sun appears to move through other constellations. Neither Lupus nor Lyra can be zodiac constellations, however, because the Sun doesn't "move through them."

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As a defence against predators, plants can have thorns on their stems or poison on their foliage.

For many plants, physical defences serve as their first line of defence. Herbivores find it challenging to consume vegetation because of these defences. Physical barriers include things like the thorns on flowers and the spikes on trees like hawthorn. These bodily barriers prevent herbivores from consuming the stalks or leaves of plants by injuring them.

The first line of defence against pathogens is the outer covering of a plant, which is comparable to our skin and is also referred to as the epidermis. On some plant sections, such as the bark of a tree or the waxy cuticle on leaves, extra layers protect the epidermis itself.

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In an NP-transistor (NPN transistor), the base is typically made of p-type semiconductor material, while the emitter and collector are made of n-type semiconductor material.

To switch the transistor "ON" and allow current to flow through it, the base-emitter junction needs to be forward-biased. This means that the base terminal should have a higher positive potential than the emitter terminal.

By applying a small positive potential to the base (relative to the emitter) and a large NP-transistor to the collector, the base-emitter junction is forward-biased, allowing current to flow through the transistor and switching it "ON".The correct answer is (A) Applying large negative potential to the collector and small positive potential to the base.

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To find the massive stars known the luminous first.

What is luminous?

Luminous objects are those that produce their own light. Sun, candle flame, among other examples Non-luminous items are those that are unable to produce light on their own. These objects reflect light from their luminous bodies.

What is main sequence star?

Any star that is fusing hydrogen in its core and has a stable equilibrium between the inward pressure from gravity forces and the outward pressure from core nuclear fusion is considered to be in the main sequence.

Therefore, we can conclude that star A is more massive because the luminous stars are massive.

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Answer:

The acceleration 2.4 m/s²

Explanation:

Given:

V₀ = 0 m/s  - Initial vehicle speed

t = 14.9 s   - Time

D = 266 m - Distance traveled by car

__________

a - ?  - the acceleration

D = V₀·t + a·t² / 2;

V₀ = 0

D = a·t² / 2;

a = 2·D / t² = 2·266 / 14.9² ≈ 2.4 m/s²

Answer:

The arrangement of particles within uranium-235 is somewhat unstable and the nucleus can disintegrate if it is excited by an outside source. When a U-235 nucleus absorbs an extra neutron, it quickly breaks into two parts. This process is known as fission

Answer:

a nuetron

Explanation:

In a nuclear reactor , a neutron is absorbed into a nucleus (typically uranium-235). ... The fast moving neutrons carry most of the energy from the reaction with them (99%) but before the neutrons can collide with fresh uranium nuclei, they need to be slowed down

The voltage expression for vy in the given RC op amp circuit with a stepped voltage can be obtained by considering the time constant. If the time constant is 4-8, and the expression for the voltage across the resistor R is 8 mF, where T is in ms, the expression for vy can be derived.

In the given RC op amp circuit, the voltage across the resistor R is given by the expression vy = vis * (1 - e^(-t/RC)), where vis is the input voltage, t is the time, R is the resistance, and C is the capacitance.

Given that the time constant is 4-8, we can assume that the product of R and C is equal to this time constant. Let's assume RC = τ, where τ lies between 4 and 8.

Substituting RC = τ and the given expression for vis as 8 mF (where T is in ms), we can write the voltage expression as vy = 8 * (1 - e^(-t/τ)).

This expression represents the voltage across the resistor R, labeled as vy in the op amp circuit, as a function of time and the time constant τ.

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Answer:

both drivers experience the same force. just with different "results"

Explanation:

Answer:

You do

Explanation:

Momentum is mass*velocity. So Newton's 3rd law equal and opposite reaction. Because you weigh less you will have more force act on you than the driver who weighs more.

Given:

the speed of sound in human tissue is

the wavelength of the wave is

Required: frequency of the wave.

Explanation:

to find the frequency of the wave we use the relation that is given by

Plugging all the values in the above relation, we get

Thus, the frequency of the wave is

The heat energy liberated when 75 g of iron freezes at its freezing point is 18,375 Joules.

To calculate the heat energy liberated when 75 g of iron freezes at its freezing point, we can use the formula Q = m * Lf, where Q represents the heat energy, m is the mass of the substance, and Lf is the latent heat of fusion.

Given:

Mass of iron (m) = 75 g = 0.075 kg

Latent heat of fusion for iron (Lf) = 245,000 J/kg

Using the formula, we can calculate the heat energy liberated:

Q = m * Lf

 = 0.075 kg * 245,000 J/kg

 = 18,375 J

Therefore, the heat energy liberated when 75 g of iron freezes at its freezing point is 18,375 Joules. This energy is released during the phase change from liquid to solid as the iron freezes. It represents the amount of thermal energy that is transferred out of the iron as it transitions from a liquid state to a solid state.

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Answer:

0.675

Explanation:

hope you get it right

Answer:

\(0.675\:\mathrm{s}\)

Explanation:

Displacement can be given as \(\Delta x=v_x\cdot t\)

Substituting given values, we have:

\(27=40t,\\t=\frac{27}{40}=\boxed{0.675\:\mathrm{s}}\)

The main answer is a program named "assignment3.sh" that builds a tree structure and performs various functions as stated in the code.

The program "assignment3.sh" is designed to build a tree structure and execute several functions as described in the provided code. It consists of several functions, each serving a specific purpose.

The first function, "build Structure," is responsible for building the structure. Although the code does not provide specific details on how the structure is built, this function can be customized to create the desired directory hierarchy or file system.

The second function, "createUserDirectories," creates five user directories within the "Users" directory. These directories are named "User1," "User2," "User3," "User4," and "User5," as stated in the code.

The third function, "createFileDirectories," generates 20 files in the "Files" directory. These files are of various types, including txt, jpg, gz, iso, log, and exe. The text files are populated with random text, ensuring they are not empty. The specific file types are passed as arguments to this function.

The "send Message" function sends messages to the users. Each user receives a specific type of file from the "Files" directory. For example, user1 receives txt files, user2 receives jpg files, user3 receives gz files, user4 receives iso files, and user5 receives log files. The messages are displayed in the respective user's terminal window.

The "clean Up" function is responsible for removing all the exe files present in the "Files" directory, effectively performing a cleanup operation.

Finally, the "display Structure" function displays the contents of the structure, providing an overview of the created directories and files.

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Answer:

The answer is down below

Explanation:

1)

\(f \alpha e\)

\(f = ke\)

where e is the extension

and k is the elastic constant

2)e=30-20=10cm

W=1/2Fe or 1/2ke²

The theoretical efficiency is greater than that of the actual efficiency of the engine. This is because heat engine always produces some waste heat.

The Second Law of Thermodynamics states that a heat engine cannot be 100% efficient. In practice, a heat engine is only 100% efficient when it is operating at about 30-50% efficiency.

If we were to multiply this by 100, we would get the efficiency as a percent: 49%. This is the theoretical maximum efficiency. If we were to actually build an engine, it would be less efficient than the theoretical engine. The theoretical engine that can achieve this theoretical maximum efficiency is called the Carnot Engine.

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Answer:

Clouds are formed when moist air rises upward . As the air rises , it becomes colder. Eventually the air can't hold all of the water vapour in it, and some of water vapour condenses to form tiny water droplets... Clouds form at wide range of altitudes , from near the ground to very high in the atmosphere.

Answer:

:) :::::::::::::::::::::::::::::::))))

A satellite travels at a constant speed, its shape is a circle.

An integrated receiver and transmitter of radio signals known as a transponder, a satellite is essentially a self-contained communications system that can receive signals from Earth and retransmit those signals back to Earth.

The three primary parts of a satellite are the propulsion system, which includes the rockets that move the satellite, the power system, which includes the solar panels that supply power, and the communications system, which includes the antennae and transponders that receive and retransmit signals. To enter into the proper orbit and periodically adjust its position, a satellite needs a propulsion system of its own.

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Light photons always travel at a constant speed (the speed of light) regardless of their energy, while the velocity of electrons is not constant and can vary with their energy.

Light photons and energetic electrons do not have constant velocities independent of energy. Light photons, which are particles of electromagnetic radiation, travel at a constant speed in a vacuum, which is approximately 299,792 kilometers per second (or about 186,282 miles per second) in a vacuum, denoted as the speed of light (c). This speed is a fundamental constant of nature and remains constant regardless of the energy of the photons. In other words, all photons, regardless of their energy, travel at the same speed in a vacuum.

On the other hand, energetic electrons do not have a constant velocity independent of their energy. According to classical physics, the velocity of an electron can vary depending on its energy. In classical mechanics, the kinetic energy of an object is related to its velocity. However, in the microscopic world of quantum mechanics, the behavior of particles such as electrons is described differently.

In quantum mechanics, the concept of particle velocity becomes less straightforward. Instead of velocity, quantum particles are described by wavefunctions, which represent the probability distribution of finding the particle at a certain location. The wavefunction of an electron evolves over time according to the Schrödinger equation, and it does not directly correspond to a well-defined classical velocity.

However, in certain situations, such as in electron beams or particle accelerators, electrons can be accelerated to high energies. In these cases, the energy of the electrons is related to their speed, but it is not a constant relationship. As the energy of the electrons increases, their speed can also increase, but it is not independent of their energy.

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