(c) Changing water into vapour is condensation true or false​

Answer:

max

Explanation:

because its right 90/7

Energy conservation is the principle that energy is neither created nor destroyed, but can only be converted or transferred. It involves using energy-efficient appliances and transitioning to renewable energy sources to reduce consumption and environmental impact.

Energy conservation refers to the principle that energy cannot be created or destroyed; it can only be converted from one form to another or transferred between systems. This principle is based on the law of conservation of energy, also known as the first law of thermodynamics. In other words, the total amount of energy in a closed system remains constant over time.

One example of energy conservation is the use of energy-efficient appliances in households. By using appliances that are designed to minimize energy waste, such as energy-saving light bulbs, efficient refrigerators, or insulated windows, individuals can reduce their energy consumption and lower their electricity bills. These appliances are designed to convert electrical energy into useful forms, such as light or heat, with minimal energy losses.

Additionally, energy conservation plays a crucial role in sustainable practices and environmental preservation. For instance, reducing reliance on non-renewable energy sources like fossil fuels and transitioning to renewable energy sources such as solar or wind power helps conserve natural resources and reduces greenhouse gas emissions.

In summary, energy conservation is the principle that states energy cannot be created or destroyed but can only be converted or transferred between different forms. By adopting energy-efficient practices and utilizing renewable energy sources, individuals and society can contribute to conserving energy and mitigating environmental impact.

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The question probable may be:

Explain the concept of energy conservation and provide an example of how it applies in real-life situations.

Bright lines in its emission spectrum have the same wavelengths as the dark lines of its absorption spectrum. Hence, option (d) is correct.

The electromagnetic radiation spectrum that is emitted when an atom or molecule changes from a high energy state to a lower energy state is known as the emission spectrum of a chemical element or chemical compound.

Absorption spectrum: An electromagnetic spectrum where a drop in radiation strength at particular wavelengths or ranges of wavelengths indicative of an absorbing substance (such as chlorophyll) is particularly visible as a pattern of dark lines or bands, in contrast to emission spectrum.

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A vector is a physical quantity that has both magnitude and direction

A two dimensional vector represented by r = xi + yj has the magnitude r = √(x² + y²) where

Also, a three dimensional vector represented by r = xi + yj + zk has the magnitude r = √(x² + y² + z²) where

Given a vector r = 3i + 4j, we find its magnitude thus r = √(x² + y²) where

So, r = √(x² + y²)

r = √(3² + 4²)

r = √(9 + 16)

r = √25

r = 25 units

Also, given a vector r = 3i + 4j + 5k, we find its magnitude thus r = √(x² + y² + z²) where

So, r = √(x² + y² + z²)

r = √(3² + 4² + 5²)

r = √(9 + 16 + 25)

r = √(25 + 25)

r = √50

r = 5√2 units

So,

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The pressure block a applies to the loop will be:

Pressure = (mg)/(πdiameter x h)

To find the pressure that block A applies to the loop, we need to consider the forces acting on block A as it goes around the loop. When the block is at the top of the loop, the only force acting on it is the normal force from the loop. The normal force is perpendicular to the surface of the loop and has a magnitude equal to the weight of the block, mg.

The pressure is given by the force per unit area, so we need to divide the normal force by the area of the loop in contact with the block. The area of the loop in contact with the block is equal to the circumference of the loop times the width of the block.

The circumference of the loop is equal to:

2π(diameter/2) = π x diameter

And the width of the block is equal to h.

Therefore, the pressure applied by block A to the loop at the top of the loop is given by:

Pressure = (normal force)/(area)

P = (mg)/(pidiameterh)

Substituting in the values for the mass and height of the block, we get:

Pressure = (mg)/(πdiameter*h)

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Answer:

a

Explanation:

According to Chargaff's rule, the amounts of adenine (A), thymine (T), and guanine (G) in the DNA molecule are equal to each other. The amounts of cytosine (C) and guanine (G) are also equal.

Erwin Chargaff was a biochemist, author, Bucovinian Jew who immigrated to America during the Nazi era, and professor of biochemistry at Columbia University's medical school.

Chargaff found patterns among the four bases, or chemical building blocks, of DNA, which are directly related to DNA's function as the genetic material of living things.

He was born in Austria-Hungary. Heraclitean Fire: Sketches from a Life Before Nature, an autobiography he penned, received positive reviews.

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Heya!!

For calculate aceleration, lets applicate formula:

                                                   \(\boxed{a=\frac{V-V_o}{t} }\)

                                                   Δ   Being   Δ

                                          V = Final Velocity = 5 m/s

                                         Vo = Initial Velocity = 2 m/s

                                          a = Aceleration = ? m/s²

                                                   t = Time = 7 s

⇒ Let's replace according the formula:

\(\boxed{a=\frac{5\ m/s - 2 \ m/s}{7\ s} }\)

⇒ Resolving

\(\boxed{ a=0,428\ m/s^{2}}\)

Result:

The aceleration of the object is 0,428 m/s²

Good Luck!!

Answer:

Ksasdasd

Explanation:

Between Kinetic energy and speed: The relationship is quadratic or parabolic. According to the kinetic energy formula, KE = 1/2 mv^2, the kinetic energy is proportional to the square of the speed.

Between potential energy and mass: The relationship is linear. The potential energy is directly proportional to the mass. In simple cases, the potential energy is given by PE = mgh, where mass (m) and height (h) are directly proportional.

Between pressure and volume: The relationship is inverse. According to Boyle's law, the pressure and volume of a gas are inversely proportional when temperature is constant. Mathematically, P1V1 = P2V2.

Between pressure and temperature: The relationship is linear. According to Charles's law, the pressure and temperature of a gas are directly proportional when volume is constant. Mathematically, P1/T1 = P2/T2.

Between displacement and velocity: The relationship is linear. Velocity is the rate of change of displacement with respect to time, so the two are directly proportional.

(a) The amplitude of the wave is 0.2 m.

(b) The period of the wave is  4 s.

(c) The wavelength of the wave is 100 m.

(a) The amplitude of the wave is the maximum displacement of the wave.

amplitude of the wave = 0.2 m

(b) The period of the wave is the time taken for the wave to make one complete cycle.

period of the wave = 5.5 s - 1.5 s = 4 s

(c) The wavelength of the wave is calculated as follows;

λ = v / f

where;

f = 1/t = 1 / 4s = 0.25 Hz

λ = ( 25 m/s ) / 0.25 Hz

λ = 100 m

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Answer:

The constant movement of the soup in the pot is an example of convection.

Explanation:

Convection is the movement of hot and less-hot particles in a gas or liquid, transmitting heat with that motion. Therefore, the movement of soup that heats up the surface is an example of convection.

The cooler soup sinks, forming a constant movement of soup that moves energy toward the surface of the pot. This constant movement of the soup in the pot is an example of convection.

Heat is transferred through convection, which is the large-scale movement of molecules inside gases and liquids. Conduction is used to move heat from the object to the fluid initially, but fluid motion is responsible for the bulk of the heat transfer.

In a pot of boiling soup, heated soup particles gently ascend. The heated soup starts to cool as it approaches the surface. The soup moves continuously toward the surface of the pot as a result of the cooler soup sinking. This constant movement of the soup in the pot is an example of convection.

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One of the things that are NOT a typical consequence that is associated with open pit mines is the release of high concentrations of ozone into the local environment, causing long-term respiratory harm to individuals and the environment.

The open-pit mine is a surface mining technique used to extract rocks or minerals from the earth using an open-air pit. This technique is used when ore or rock deposits are found near the surface, which makes digging a tunnel unnecessary.

The main consequence of open-pit mine that concerns most people is that it generates a large amount of dust that contains heavy metals to the environment, as well as creating deposits of toxic waste ponds. Ozone is not considered a heavy metal.

Attached below is an image of the Sunrise Dam Gold Mine open pit mine in Australia.

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Answer:

The acceleration of the car is 10.16m/s²

Explanation:

Given parameters:

  Initial velocity = 8.77m/s

   Final velocity = 47.8m/s

   Time duration  = 3.84s

Unknown:

Acceleration of the car = ?

Solution:

To find the acceleration, we must bear in mind that this physical quantity is the change in velocity with time;

     Acceleration  = \(\frac{V - U}{T}\)

V is the final velocity

U is the initial velocity

T is the time taken

  Input the parameters and solve for acceleration;

      Acceleration  = \(\frac{47.8 - 8.77}{3.84}\)   = 10.16m/s²

The acceleration of the car is 10.16m/s²

The distance formula used for a falling object is y = 1/2gt^2 where g is gravity which is 9.80m/s^2 and t is the time it falls ( reaction time).

Y = 1/2(9.8)0.2^2

Y = 0.196

It travels 0.196 meters

Answer:

530.5 Hz

Explanation:

Given :

C=0.75 micro

L=120 mH

Reactance capacitor can be determined by

=\(\frac{1}{ wC}\)

where c =capacitor

= \(\frac{1}{w*0.75*10^-6}\)

Reactance inductor can be determined by

\(= w*L\\ = w*120*10^-3\)

As they are in series so ,

\(\frac{1}{w*0.75*10^-6} =w*120*10^-3\)

On solving these value we get

\(w=3333.33\)

As we know that

f = \(\frac{w}{2*3.14}\) =

530.5 Hz

The 530.5 Hz of frequency should be used to create a resonance condition.

Reactance capacitor is defined as the opposition to the voltage change across the element.  It is inversely proportional to the angular frequency and the capacitance.

\(\bold {X_C = \dfrac 1{\omega C}}\)

Where,

Xc = Reactance

\(\bold {\omega }\) - angular frequency

C - capacitance.

so,

\(\bold {Xc = \dfrac 1 {\omega \times 0.75x10^-^6}}\)

Reactance of the inductor,

\(\bold {X_L = \omega \times L}\)

\(\bold {X_L = \omega \times 120x 10^-^3}\)

Since, both are in series,

So,

\(\bold { \dfrac 1 {\omega \times 0.75x10^-^6} = \omega \times 120x 10^-^3} }}\\\\\bold {\omega = 3333.33}\)

So, frequency

\(\bold {f = \dfrac w{2\times 3.14} = 530.5\ hz }\)

Therefore, the 530.5 Hz of frequency should be used to create a resonance condition.

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the measure of how many a wave passes on a certain point in a certain time is

frequency

Answer:

It is a liquid because it flows.

Explanation:

because liquids dont have to be a certain color they are liquid as long as they flow

Answer:

It is liquid because it flows

Explanation:

There are four fundamental forces at work in the universe: the strong force, the weak force, the electromagnetic force, and the gravitational force.

for more details tell me in comments section

Title: The Four Universal Forces

There are four fundamental forces in the universe that govern the behavior of matter and energy. These forces are:

1. Gravity: Gravity is the force that attracts two objects with mass towards each other. It is the weakest of the four fundamental forces but has an infinite range. Gravity is responsible for the motion of planets, stars, and galaxies.

2. Electromagnetic force: The electromagnetic force is the force that exists between electrically charged particles. It is responsible for the behavior of atoms and molecules, and the interaction between light and matter.

3. Strong nuclear force: The strong nuclear force is the force that holds the nucleus of an atom together. It is a very strong force that only acts over short distances.

4. Weak nuclear force: The weak nuclear force is the force responsible for certain types of radioactive decay. It is a very weak force that only acts over very short distances.

Electric wires/cables expand when temperature rises l

Answer:

Only the car transforms electrical energy into more than one form of energy.

Explanation:

The motion of the car is mechanical energy but it can also transform into another energy witch is electrical energy

While browsing a poster session at a research conference, Joan read carefully about new research that caught her eye. Joan is engaged in what is referred to as active reading.

Active reading refers to reading that involves the application of critical thinking skills to the material being read. This approach is characterized by a variety of techniques aimed at improving concentration, comprehension, and retention. Active reading may include techniques like note-taking, underlining or highlighting important passages, and summarizing key points.

Active reading is more effective than passive reading, which is reading without an attempt to understand the content. Rather than passively skimming through text, active reading encourages individuals to actively engage with it, allowing them to comprehend and retain more information.

Active reading allows readers to not only retain more information but also to better understand the text's relevance and potential applications.Joan is engaged in a poster session at a research conference. In this session, she is browsing through various research posters, carefully reading about the new research described in the poster that caught her eye.

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The equilibrium condition allows finding the correct answer for the force that is resisting the weight of the apple is:

        3. Normal force

Newton's second law gives the relationship between force, mass and acceleration of bodies, in the special case that the acceleration is is called the equilibrium condition.

            ∑ F = 0

Where F is the external force.

The free body diagram is a diagram of the forces on bodies without the details of the shape of the body, in the attached we can see a scheme of the forces.

Let's write the equilibrium condition for the apple

          N - W = 0

          N = W

.

We can see that the only forces acting on the apple are its weights and reaction from the table called Normal.

Let's analyze the different answers:

1. False. The apple is not moving therefore the resistance is zero

2. False. The apple is not moving  so friction it with the table is  

3. True. The free-body diagram shows that the normal and the weight are equal

4. False. There is nothing to pull the apple so there is no tension

5. False. Gravity is the weight of the apple that is applied to the table, not from the table to the apple.

In conclusion using the equilibrium condition we can find the correct result for the force that is resisting the weight of the apple is:

        3. Normal force

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different  days have different gravity

Explanation:

No. That won't help. It's not even true.

A 7 kg mass moving across the table at an acceleration of 25 m\(/s^2\)requires a force of 175 N.

To determine the force required to cause the acceleration of a 7 kg mass moving across the table at 25\(m/s^2\), we can use Newton's second law of motion, which states that the force acting on an object is equal to its mass multiplied by its acceleration.

Given:

Mass (m) = 7 kg

Acceleration (a) = 25 \(m/s^2\)

We can substitute these values into the equation:

Force (F) = mass (m) * acceleration (a)

F = 7 kg * 25 \(m/s^2\)

F = 175 kg·\(m/s^2\)

Therefore, the force required to cause the acceleration of the 7 kg mass is 175 kg·\(m/s^2\).

To understand the calculation, we need to know that force is a measure of how much an object accelerates when a certain amount of mass is acted upon by that force. In this case, the mass of the object is 7 kg, and it is experiencing an acceleration of 25\(m/s^2\).

By multiplying the mass and acceleration together, we find that the force required is 175 kg·\(m/s^2\). This unit, also known as a Newton (N), represents the force required to accelerate a 1 kg mass at a rate of 1 \(m/s^2\)

In summary, the force required to cause the acceleration of the 7 kg mass across the table at 25 \(m/s^2\) is determined to be 175 kg·\(m/s^2\). This calculation follows Newton's second law of motion and shows the relationship between mass, acceleration, and force.

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Answer:

Step 1: A Bill Is Born

Anyone may draft a bill; however, only members of Congress can introduce legislation, and, by doing so, become the sponsor(s). The president, a member of the cabinet or the head of a federal agency can also propose legislation, although a member of Congress must introduce it.

Step 2: Committee Action

As soon as a bill is introduced, it is referred to a committee. At this point the bill is examined carefully and its chances for passage are first determined. If the committee does not act on a bill, the bill is effectively "dead."

Step 3: Subcommittee Review

Often, bills are referred to a subcommittee for study and hearings. Hearings provide the opportunity to put on the record the views of the executive branch, experts, other public officials and supporters, and opponents of the legislation.

Step 4: Mark up

When the hearings are completed, the subcommittee may meet to "mark up" the bill; that is, make changes and amendments prior to recommending the bill to the full committee. If a subcommittee votes not to report legislation to the full committee, the bill dies. If the committee votes for the bill, it is sent to the floor.

Step 5: Committee Action to Report a Bill

After receiving a subcommittee's report on a bill the full committee votes on its recommendation to the House or Senate. This procedure is called "ordering a bill reported."

Step 6: Voting

After the debate and the approval of any amendments, the bill is passed or defeated by the members voting.

Step 7: Referral to Other Chamber

When the House or Senate passes a bill, it is referred to the other chamber, where it usually follows the same route through committee and floor action. This chamber may approve the bill as received, reject it, ignore it, or change it.

Step 8: Conference Committee Action

When the actions of the other chamber significantly alter the bill, a conference committee is formed to reconcile the differences between the House and Senate versions. If the conferees are unable to reach agreement, the legislation dies. If agreement is reached, a conference report is prepared describing the committee members' recommendations for changes. Both the House and Senate must approve the conference report

Step 9: Final Action

After both the House and Senate have approved a bill in identical form, it is sent to the president. If the president approves of the legislation, he signs it and it becomes law. Or, if the president takes no action for ten days, while Congress is in session, it automatically becomes law.If the president opposes the bill he can veto it; or if he takes no action after the Congress has adjourned its second session, it is a "pocket veto" and the legislation dies.

Step 10: Overriding a Veto

If the president vetoes a bill, Congress may attempt to "override the veto." If both the Senate and the House pass the bill by a two-thirds majority, the president's veto is overruled and the bill becomes a law.

Explanation:

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