6. A car accelerates from rest to 5m/s in 20 s. The force from the engine is 2000N. The force of air resistance and friction acting is 1000N. What is the cars mass?

22te-6tv - 33t²ve-6tv is the power across  the 11-F capacitor.

To find the power, we need to know the current flowing through the capacitor. We can calculate this using the formula I = C(dV/dt), where I is the current, C is the capacitance (11 F in this case), and dV/dt is the rate of change of voltage with respect to time.

Since the voltage across the capacitor is given as 2te-3tv, we can differentiate this with respect to time to get dV/dt.

dV/dt = (d/dt)(2te-3tv) = 2e-3tv - 3t(ve-3tv) = (2 - 3tv)e-3tv

Substituting the values given, we get:

I = 11((2 - 3tv)e-3tv)

To find the power, we use the formula P = VI, where P is the power, V is the voltage across the capacitor (2te-3tv), and I is the current calculated above.

P = (2te-3tv)(11((2 - 3tv)e-3tv))

Simplifying this expression gives:

P = 22te-6tv - 33t²ve-6tv

Therefore, the power across the 11-F capacitor is 22te-6tv - 33t² ve-6tv.

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When Jack argues with the umpire over a call in baseball, he is showing poor sportsmanship.The correct answer is option B.

Poor sportsmanship refers to behavior that violates the principles of fair play, respect, and integrity in sports. It encompasses actions such as arguing, complaining, or displaying disrespectful behavior towards officials, opponents, or teammates.

Engaging in a dispute with the umpire goes against the spirit of sportsmanship, as it undermines the authority and impartiality of the officials.

Sportsmanship encourages players to accept the decisions made by referees or umpires, even if they may disagree. It promotes respect for the game, its rules, and the individuals responsible for enforcing them.

Arguing with the umpire can also create a negative atmosphere and set a poor example for others, particularly younger players who may be observing the game.

It can lead to increased tension, disrupt the flow of the game, and even escalate into more serious conflicts.

In summary, Jack's behavior of arguing with the umpire demonstrates poor sportsmanship, as it disregards the principles of fair play, respect, and acceptance of officiating decisions.

Encouraging a more positive and respectful approach to resolving disagreements would contribute to a healthier sports environment.

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The probable question may be:

Jack is playing baseball and disagrees with the umpire's call. He argues with the umpire. What is Jack showing?

A. Enthusiasm

B. Poor sportsmanship

C. Diversity

D. Bad form

Answer:

volume of substance of weight of mercury is 13593 kilograms

Answer:

first one

Explanation:

Given that the progressive wave equation is represented by y=Asin2π(0.15t-0.1x). Let's find the period, amplitude, frequency, wavelength, and velocity.

The wave equation is represented by y=Asin2π(0.15t-0.1x). The standard wave equation can be written asy = Asin(kx-ωt + Φ)Where,k = wave numberω = angular frequencyΦ = phase angle for the given equation, k = 0.1 and ω = 0.15.Amplitude:

Amplitude = A = maximum displacement from the mean position.A = 1Frequency: Frequency is the number of complete oscillations made by a point on the wave in one second. It is denoted by f.f = ω/2πFrequency, f = 0.15/2π = 0.0238 HzPeriod: Period is the time taken by one complete oscillation.

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Answer:

Explanation:

Astronauts must wear spacesuits whenever they leave a spacecraft and are exposed to the environment of space. In space, there is no air to breath and no air pressure... Spacesuits are specially designed to protect astronauts from the cold, radiation and low pressure in space. They also provide air to breathe.

The correct answer is (d) 1.5 A.

The current through a resistor connected to a battery can be calculated using Ohm's Law, which states that the current  (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by its resistance (R). Mathematically, it can be expressed as I = V/R.

In this case, the voltage across the resistor is given as 1.5 V, and the resistance is 1.0 kΩ (which is equivalent to 1000 Ω). Plugging these values into Ohm's Law, we get I = 1.5 V / 1000 Ω = 0.0015 A = 1.5 A.

Therefore, the current through the 1.0 kΩ resistor connected to the 1.5 V battery is 1.5 A.

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Answer:

After 3 seconds, the velocity is 4.5+3×1.5=9 m/s.

search it up on yt lol

Explanation:

Answer:

2892.31 N

Explanation:

Applying,

P = F×v................ Equation 1

Where P = power of the motor, F = Weight of the load the motor can lift, v = velocity

make F the subject of the equation

F = P/v.............. Equation 2

Given: P = 188 W, v = 0.065 m/s

Substitute into eequation 2

F = 188/0.065

F = 2892.31 N

Hence the weight of the load is 2892.31 N

Answer:

100 ml de una disolucion 05 M de sulfate de vivre

An encryption can be defined as a form of cryptography and it typically involves the process of converting or encoding information in plain text into a code, known as a ciphertext. Generally speaking, an information or data that has been encrypted it can only be accessed and deciphered by an authorized user.

This ultimately implies that, an encryption simply refers to a utility which can be used by an end user to to secure his or her sensitive information from unauthorized access or theft by a hacker (attacker).

In Computer programming, some examples of encryption algorithms include the following:

In Computer technology, a defragmentation utility helps to reorganize (rearrange) the data stored on a disk drive and as such, it would make a computer system to run faster. Also, a compression utility is a type of utility which can be used to reduce the size of a large video file that is to be sent through an email.

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The lift experienced by maglev trains is due to magnetic forces. Maglev trains, short for magnetic levitation trains, utilize magnetic forces to achieve lift and propulsion.

The principle behind maglev technology involves the interaction between magnetic fields and electric currents to generate repulsion or attraction forces. The lift experienced by maglev trains is primarily due to magnetic repulsion. The train's undercarriage contains magnets, typically superconducting electromagnets or permanent magnets, which create a strong magnetic field. The track, on the other hand, is equipped with a series of coils or magnets that produce a corresponding magnetic field. When the train moves along the track, the magnetic fields of the undercarriage and the track interact, resulting in a repulsive force that levitates the train above the track.

By effectively repelling the train from the track, the magnetic forces create a "floating" effect, reducing friction and allowing the train to move smoothly and efficiently. This enables maglev trains to achieve high speeds and provide a comfortable ride. In addition to lift, magnetic forces are also used for propulsion in maglev systems, where alternating magnetic fields push and pull the train forward. In summary, the lift experienced by maglev trains is indeed due to magnetic forces, specifically the repulsion generated between the magnetic fields of the train and the track.

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Since both wires have the same original length, the thicker wire will stretch less as a result since its original length will alter less according to Young's  Modulus

What is Young's  Modulus ?

Young’s modulus is a measure of the ability of a material to withstand changes in length when under lengthwise tension or compression. Sometimes referred to as the modulus of elasticity, Young’s modulus is equal to the longitudinal stress divided by the strain.

The Young's  Modulus of two wires made of the same material will be equal. Stress/strain is what this is. The force per cross-sectional area is known as stress. Since the same mass is suspended from each wire and the gravitational field is uniform, both wires are under the same force. As a result, because the force is dispersed over a larger cross sectional area, the thicker wire will experience less stress. It will stretch the least from the first wire.

Given that strain is defined as the percentage change in length, we may infer that the thicker wire must have less strain if it experiences less stress than the thinner wire.

Stress/Strength = Young's Modulus

The Young's modulus must also decrease proportionally as strain increases for the Young's modulus to remain constant, which it does.

Since both wires have the same original length, the thicker wire will stretch less as a result since its original length will alter less.

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Answer: 1.6958*10^3 kW-hr

Explanation:

The barrel of oil contains around 6.1*10^9 J of energy.

We want this energy expressed in kW-hr.

We know that:

1J = 2.78*10^(-7) kW-hr

Then  6.1*10^9 J will be equal to 6.1*10^9  times the above amount.

This is:

E =  (6.1*10^9)*(2.78*10^(-7) kW-hr) = (6.1*2.78)*(10^9*10^(-7)) kW-hr

  = 16.958*10^(9 - 7) kW-hr

  =  16.958*10^2 kW-hr

  = 1.6958*10^3 kW-hr

Energy is the ability to do work. There are a few types of energy, these types are as follows:-

The barrel of oil contains around 6.1*10^9 J of energy.  We want this energy expressed in kW-hr.

One joule of energy has   1J = 2.78*10^(-7) kW-hr .

Therefore, the \(6.1*10^9\)J will be equal to \(6.1*10^9\) times the above amount.

Hence, the energy will be

E =  \((6.1*10^9)*(2.78*10^7 )\)  

 =\(16.958*10^9-7\)

=  \(1.6958*10^3 kW-hr\)

Hence, the correct option is    \(1.6958*10^3 kW-hr\)

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The study of radioactivity by Marie Curie marked a significant turning point in the realm of physics and had a significant influence on scientific knowledge. Now let's get into the specifics.

"Radioactivity" is the term Marie Curie coined to describe the phenomenon whereby materials emit radiation that can fog photographic plates. During her uranium investigation in 1896, she made this discovery. This game-changing discovery opened the door for more research into and comprehension of radioactivity, which resulted in important developments in the field of nuclear physics.

Marie Curie's research on radioactivity served as a springboard for additional nuclear physics research and has profound ramifications for other fields of science and medicine. It resulted in improvements in our knowledge of atomic structure, the creation of radiation therapy for the treatment of cancer, and the eventual exploitation of nuclear energy.

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Answer:

direct current (DC) and alternating current (AC)

I'm not weather the answer is right or wrong....

Answer:

B) cooper

Explanation:

the Cooper will protect the iro from attack by reagents such as acid

The weight of the object in the newly heavenly body is 3000 N.

In science and engineering, the weight of an object is the pressure performed on the item due to gravity. a few widespread textbooks outline weight as a vector quantity, the gravitational pressure performed on the item. Others define weight as a scalar quantity, the significance of the gravitational pressure.

Given,

mass of earth = M

mass of new heavenly body = 12 M

the radius of the earth = r

the radius of the new heavenly body = 4r

mass of the object = m (mass always remains constant)

\(\frac{mM}{r^2}\)

using the formula of gravity,

G₁ = g\(\frac{mM}{r^2}\)

G₂ = g\(\frac{m12M}{4r^2}\)

comparing G₁  and G₂

G₁ = 1000 N given

G₁ / G₂ = M × 4r² /  12 M r²

G₂ = 1000 × 12 / 4

     = 3000 N

The measure of the pressure of gravity performing on a frame. The method for weight is given by using: w = mg. As weight is a force its SI unit is also the same as that of pressure, the SI unit of weight is Newton (N).

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The battery rating that is tested at 0 degrees Fahrenheit (-18 degrees Celsius) is the (2) cold cranking ampere (CCA) rating.

CCA measures the number of amps a battery can deliver for 30 seconds at 0°F without dropping below 7.2 volts. This rating is important in colder climates because lower temperatures can cause batteries to lose power, making it more difficult for the battery to start the vehicle.

The higher the CCA rating, the more powerful the battery is in cold weather. The cranking ampere (CA) rating measures the same thing, but at 32°F instead of 0°F. Marine cranking ampere (MCA) is similar to CCA, but is tested at 32°F and for a longer period of time, as it is used in marine applications. Reverse capacity is not a battery rating.

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Answer:2.25atm , because doubling the number of moles of Ar doubles its partial pressure.

Explanation:

Humans radiate excess energy in the form of infrared radiation. The radiation emitted in the highest amount has a wavelength of 9.50 micrometers. This wavelength is associated with a frequency of 3.16 x 10^13 Hz.

How is frequency related to wavelength and energy? Frequency is inversely proportional to wavelength, according to the equation c = λν, where c is the speed of light, λ is the wavelength, and ν is the frequency. As a result, if the wavelength of a wave increases, the frequency decreases, and if the wavelength decreases, the frequency increases. In general, the energy of a wave is proportional to its frequency. This suggests that if the frequency of a wave is higher, its energy will be higher, and if its frequency is lower, its energy will be lower.

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Answer:

a pipe, ditch, ship or factory smokestack.”

Explanation:

The U.S. Environmental Protection Agency (EPA) defines point source pollution as “any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack.” Factories and sewage treatment plants are two common types of point sources.

Answer:

what are the choices provided?

Explanation:

Answer:

True

Explanation:

On Edg

Answer:

0.23 m/s².

Explanation:

v=u+ at.

.....

The variation of reaction rate (velocity) with substrate concentration can be categorized into three possibilities: 1) rate increases, 2) rate decreases, or 3) rate remains unchanged.

The relationship between reaction rate and substrate concentration is often described by the concept of enzyme kinetics. In certain cases, an increase in substrate concentration leads to an increase in the reaction rate. This occurs because a higher substrate concentration provides more available molecules for the reaction, allowing more frequent enzyme-substrate collisions and facilitating the formation of the product. On the other hand, there are situations where the reaction rate decreases with increasing substrate concentration. This can happen when the enzyme becomes saturated with the substrate, meaning that all available enzyme active sites are occupied. Once saturation occurs, further increases in substrate concentration do not contribute to an increase in the reaction rate since the enzyme is already operating at its maximum capacity.

Lastly, there are cases where the reaction rate remains unchanged regardless of the substrate concentration. This can happen when the reaction is limited by factors other than substrate availability, such as enzyme concentration or other external conditions. Overall, the variation of reaction rate with substrate concentration depends on the specific characteristics of the enzyme-substrate system and can fall into any of the three categories mentioned: rate increases, rate decreases, or rate remains unchanged.

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E_total(θ) = Σ (Eθ e^(j(kd(i-1)cos(θ) + βi)))
This expression represents the total radiated field of the array, considering the individual contributions from horizontally polarized dipole elements with the given electric field Eθ and taking into account their positions and phase shifts within the array.

To find the expression for the total radiated field of the array, we need to consider the individual contributions of each dipole element in the array and sum them up. Since the antenna elements are horizontally polarized dipoles, we can express the radiated electric field Eθ for a single dipole as:

Eθ = âθ jµ (kIol / 4πr) e^(-jkr) |cos θ|

Here, âθ represents the unit vector in the θ direction, j is the imaginary unit, µ is the permeability, k is the wave number, Iol is the current at the location of the dipole, r is the distance from the dipole, and θ is the angle between the observation point and the dipole axis.

Now, we need to consider an array of N dipoles, each with its own location and phase shift. For simplicity, let's assume that all dipoles have the same current amplitude I0 and are uniformly spaced with a distance d along the x-axis.

To find the total radiated field for the array, we need to sum the contributions of each dipole element:

E_total(θ) = Σ E_i(θ)

where E_i(θ) is the radiated field of the i-th dipole, and the summation goes from i=1 to N.

For each dipole in the array, we need to account for the phase shift due to its position along the x-axis and the additional phase shift βi introduced by the array feeding network:

E_i(θ) = Eθ e^(j(kd(i-1)cos(θ) + βi))

So, the total radiated field of the array is given by:

E_total(θ) = Σ (Eθ e^(j(kd(i-1)cos(θ) + βi)))

This expression represents the total radiated field of the array, considering the individual contributions from horizontally polarized dipole elements with the given electric field Eθ and taking into account their positions and phase shifts within the array.

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Answer:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Explanation:

Answer: Photosynthesis is something that a plant goes through. It takes the sunlight from the sun and turns it into oxygen, emitting it out into the atmosphere and giving us air to breathe.

Explanation:

Answer:

The gravitational force b) Increases with increase in mass.

Explanation:

The gravitational force between two objects is given by

F=G\frac{m_1 m_2}{r^2}F=Gr2m1m2

where

G is the gravitational constant

m1, m2 are the masses of the two objects

r is the separation between the objects

From the equation, we notice that:

- The force is proportional to the masses, m1 and m2: so, if the masses increase, the force will increase, and if the masses decrease, the force will decrease

- The force is inversely proportional to the distance between the masses, r: so, if the distance increases,  the force will decreases, and if the distance decreases , the force will increases

Therefore, the correct options is only:

Increases with increase in mass

Answer: The answer is b increases in increase of mass because the heavier the object is the more gravitional pull it will have.

Explanation: Which of the following is true for gravitational force?

Group of answer choices

Decreases with decrease in distance

Increases with increase in distance

Decreases with increase in mass

Increases with increase in mass

To set up a good experiment to test whether hypothesis H is true or not, try to get evidence E such that there is as big a difference between P(E | H) and P(E | ~H) as possible. This means the correct option is d.

For a good experiment to test whether hypothesis H is true or not, it is necessary to gather the right evidence. This evidence should be such that there is as big a difference between P(E | H) and P(E | ~H) as possible.

P(E | H) and P(E | ~H) are the conditional probabilities of evidence E given hypothesis H and evidence E given not-H respectively. The difference between these two probabilities measures how well evidence E supports hypothesis H versus not H.

For example, suppose we want to test the hypothesis H: All dogs bark. To get evidence that there is as big a difference between P(E | H) and P(E | ~H) as possible, we can test this hypothesis by taking two groups of dogs. One group is the dogs that bark (group A) and the other group is the dogs that don't bark (group B).

Then, we can get evidence E, which is the number of dogs in group A that bark and the number of dogs in group B that bark. Using this evidence, we can calculate the conditional probabilities of evidence E given hypothesis H (P(E | H)) and evidence E given not-H (P(E | ~H)).

Finally, we can calculate the difference between P(E | H) and P(E | ~H). If this difference is large, then the evidence supports hypothesis H more than not H.

To set up a good experiment to test whether hypothesis H is true or not, it is necessary to gather the right evidence. This evidence should be such that there is as big a difference between P(E | H) and P(E | ~H) as possible.

For example, suppose we want to test the hypothesis H: All dogs bark. To get evidence that there is as big a difference between P(E | H) and P(E | ~H) as possible, we can test this hypothesis by taking two groups of dogs. One group is the dogs that bark (group A) and the other group is the dogs that don't bark (group B).

Then, we can get evidence E, which is the number of dogs in group A that bark and the number of dogs in group B that bark. Using this evidence, we can calculate the conditional probabilities of evidence E given hypothesis H (P(E | H)) and evidence E given not-H (P(E | ~H)).

Finally, we can calculate the difference between P(E | H) and P(E | ~H). If this difference is large, then the evidence supports hypothesis H more than not H.

Hence, it is important to get evidence that has a significant difference between P(E | H) and P(E | ~H) to set up a good experiment to test whether hypothesis H is true or not.

It is necessary to gather the right evidence to set up a good experiment to test whether hypothesis H is true or not.

Evidence E should be such that there is as big a difference between P(E | H) and P(E | ~H) as possible. The difference between these two probabilities measures how well evidence E supports hypothesis H versus not H. Therefore, option d is the correct answer.

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