How is temperature related to the physical change of a substance?Which best describes why a liquid needs a container when a solid does not?

To maintain balance, our body must get rid of excess fluids or waste products. One crucial component in maintaining balance is the fluid and electrolyte balance within our body. The body regulates the levels of fluids and electrolytes to ensure optimal cellular function and maintain overall equilibrium.

Excess fluids in the body can disrupt the balance and affect our ability to maintain equilibrium. The body eliminates excess fluids through various processes, primarily through the urinary system. The kidneys play a vital role in filtering waste products and excess fluids from the blood, producing urine that is excreted from the body.

In addition to fluids, waste products generated through metabolic processes must also be eliminated to maintain balance. For example, carbon dioxide is produced as a waste product of cellular respiration. If excessive carbon dioxide builds up in the body, it can lead to acid-base imbalances and affect our ability to maintain proper pH levels.

Other waste products that the body needs to eliminate include urea, produced from the breakdown of proteins, and other metabolic byproducts. These waste products are excreted through the kidneys, lungs, and gastrointestinal tract.

By efficiently eliminating excess fluids and waste products, our body maintains the balance necessary for proper functioning and equilibrium. The excretory system, including the kidneys, lungs, and other organs involved in waste elimination, plays a crucial role in maintaining this balance and ensuring overall physiological stability.

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Answer:

The answer is 35.

Explanation:

We use the formula F=ma

Answer:

The height of the image of the candle is 20 cm.

Explanation:

Given that,

Size of the candle, h = 12 cm

Object distance from the candle, u = -6 cm

Focal length of converging lens, f = 15 cm

To find,

The height of the image of the candle.

Solution,

Firstly, we will find the image distance of the candle. Let it is equal to v. Using lens formula to find the image distance.

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

v is image distance

\(\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{15}+\dfrac{1}{(-6)}\\\\v=-10\ cm\)

If h' is the height of the image. Magnification is given by :

\(m=\dfrac{h'}{h}=\dfrac{v}{u}\)

\(h'=\dfrac{vh}{u}\\\\h'=\dfrac{-10\times 12}{-6}\\\\h'=20\ cm\)

So, the height of the image of the candle is 20 cm.

Answer:

speed=330m/s

Explanation:

the speed of wave is given as

speed(meter per second) =frequency(hertz) * wavelength(meters)

so using the above formula we substitute the figures given in the question in the formula we get

speed = 0.4*825

speed =330m/s

note m/s is the si unit for speed which is read as meter per second

therefore speed =330m/s

Answer:

convex mirrors.

Explanation:

Convex mirrors diverge light rays and, thus, have a negative focal length. A ray approaching a concave converging mirror parallel to its axis is reflected through the focal point F of the mirror on the same side.

Answer:

D) The force F is perpendicular (normal) to both velocity V and magnetic field B.

Explanation:

When a charged particle enters a magnetic field, it experiences a force which changes its direction of travel. The direction of motion of the charged particle, the magnetic field direction, and the direction of the force, are all perpendicular to one another. According to Lorentz right hand rule, hold the right hand parallel to the ground, with the palm facing up, and the thumb held out at right angle to the other fingers. If the direction of the other fingers represents the magnetic field line and direction, and the thumb represents the direction of motion of a positively charged particle, then, the palm will push up in the direction of the force. For a negatively charged particle, the force will push down in the direction of the back of the hand.

Answer:

Where are the images?

Explanation:

I can't help if there is no image(s) to this question.

Answer:

A force is a push or pull on an object. Forces usually cannot be seen but their effects can.

Nothing moves, changes speed, stops or changes direction without force. Heavier objects need more

force to get them to move or change direction.

Explanation:

Answer:

A. 25.08 s

B. 3082.53 m

C. 3×10⁵ m/s²

Explanation:

A. Determination of the time.

This can be obtained as illustrated below:

Acceleration (a) = –9.8 m/s²

Initial velocity (u) = 245.8 m/s

Final velocity (v) = 0 m/s

Time (t) =.?

v = u + at

0 = 245.8 + (–9.8 × t)

0 = 245.8 – 9.8t

Collect like terms

0 – 245.8 = – 9.8t

– 245.8 = – 9.8t

Divide both side by –9.8

t = –245.8 / –9.8

t = 25.08 s

Therefore, it will take 25.08 s for the car to come to a complete stop.

B. Determination of the distance travelled by the car.

Acceleration (a) = –9.8 m/s²

Initial velocity (u) = 245.8 m/s

Final velocity (v) = 0 m/s

Distance (s) =?

v² = u² + 2as

0² = 245.8² + (2 × –9.8 × s)

0 = 60417.64 – 19.6s

Collect like terms

0 – 60417.64 = – 19.6s

– 60417.64 = – 19.6s

Divide both side by –19.6

s = –60417.64 / –19.6

s = 3082.53 m

Thus, the car travelled a distance of 3082.53 m before stopping completely.

C. Determination of the acceleration of the object.

Initial velocity (u) = 0 m/s

Final velocity (v) = 600 m/s

Distance (s) = 0.6 m

Acceleration (a) =?

v² = u² + 2as

600² = 0² + (2 × a × 0.6)

360000 = 0 + 1.2a

360000 = 1.2a

Divide both side by 1.2

a = 360000 / 1.2

a = 300000 = 3×10⁵ m/s²

Here, we are required to determine how fast is you drink, sitting in the cup holder, travelling relative to the car.

From the laws of relative motion,

Evidently, the scenario in the question is similar to the third scenario above. The cup, sitting in the cup holder is travelling with the car at the same constant speed 10m/s.

Therefore, the speed of the drink relative to the car is zero(0).

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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Answer:

less frequency in the energy

Answer:

steam

Explanation:

particles move faster in a gas than in a liquid or solid

when driving at 35 mph, you should maintain a following time of at least 2 to 3 seconds between your vehicle and the one in front of you to ensure safe driving conditions. This translates to approximately 102 to 153 feet.

The recommended following distance when driving at 35 mph is typically two to three seconds. Following distance refers to the space between your vehicle and the vehicle in front of you, and it's important to maintain a safe distance to prevent collisions and allow for reaction time in case of sudden stops or changes in traffic conditions.

To determine the appropriate following distance, you can use the "two-second rule." This rule involves choosing a stationary object on the road, such as a sign or a tree, and counting the number of seconds it takes for your vehicle to reach that object after the vehicle in front of you passes it.

If it takes less than two seconds, you should increase your following distance.

At 35 mph, two seconds translates to approximately 102 feet (31 meters), and three seconds translates to approximately 153 feet (47 meters). However, it's important to note that the following distance can be affected by various factors such as weather conditions, road conditions, and the size and weight of your vehicle.

It's also important to remember that maintaining a safe following distance is just one aspect of safe driving. Other important safe driving practices include staying alert and focused, obeying traffic laws and signals, and adjusting your driving to the current conditions. By following these practices, you can help keep yourself and others safe on the road.

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Answer:

F = q V X B

Using the right hand rule (right hand screw) turn V into B to get direction of force which in this case is down

If V is east and F is down then one can see that B must be directed towards  the south - turn V into B (south) and F will be directed downwards.

Answer:

a

Explanation:

Its mass times m/s there is no m/s so 1500x0 = 0

This question involves the concept of the law of conservation of momentum.

The momentum of the rocket is "c 1,500 kg x m/s forward"

The law of conservation of momentum states that the total momentum of the system must be constant. It means that the change in momentum of the system must be equal to zero. Here the system is the rocket and the gases. So, applying the law of conservation of momentum to this system, we get:

Momentum of Gas + Momentum of Rocket = 0

Taking, forward direction as positive and the backward direction as negative:

\(- 1500\ kg.m/s+Momentum\ of\ Rocket = 0\\\)

Momentum of Rocket = 1500 kg.m/s (forward)

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The attached picture illustrates the scenario of the question.

The recoil velocity of the rifle is -0.75 m/s.

The recoil velocity of the rifle is calculated by applying principle of linear momentum as follows;

m₁u₁ + m₂u₂ = v₁m₁ + v₂m₂

where;

( 4 kg x 0 ) + ( 0.01 kg x 0 ) = 4v₁  +  ( 0.01 kg x 300 m/s )

0 = 4v₁ + 3

v₁ = - 3 /4

v₁ = -0.75 m/s

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Answer: 9.79m/s2

Explanation: Just did a quiz with this question

Answer: Yes. Please find the answer in the explanation.

Explanation:

Yes. Since velocity is a vector quantity, that is, it has both magnitude and direction.

If the displacements covered are not of the same direction, the velocity will not also of the same direction.

Take for instance, if the velocity in a positive is 40 m/s and velocity in the opposite direction is - 20 m/s . Then, the resultant velocity will be 40 - 20 = 20 m/s

Therefore,  it is possible that at any time during their trip their velocity was -20 m/s.

Answer:

garbage , polluted water dam, unexpected dust particle

The difference between landslides and mudflows is mudflows are caused by gravity. The correct option is option A.

Landslides are caused by disturbances in the natural stability of a slope. A landslide is defined as the movement of a mass of rock, debris, or earth down a slope.

The impact of a landslide can be extensive, including loss of life, destruction of infrastructure, damage to land and loss of natural resources. Landslide material can also block rivers and increase the risk of floods.

It is a form of mass wasting involving fast moving flow of debris and dirt that has become liquefied by the addition of water. A river of liquid and flowing mud on the surfaces of normally dry land areas, as when earth is carried by a current of water.

They can happen after heavy rains, droughts, earthquakes or volcanic eruptions.

They are both examples of natural disaster.

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An electrically charged object can be used to attract any object with an opposite charge.

This is due to the fundamental principle that opposites attract and repel in physics.

Electric charge is a fundamental property of matter that gives rise to electromagnetic interactions. An electric charge, whether positive or negative, produces an electric field that surrounds it. This field exerts a force on any other charge in its vicinity that is either attracted to or repelled from it. Electric charge is a fundamental property of matter that produces a variety of electric phenomena. When the charge is concentrated in a localized region of space, the object is electrically charged. When there is a net accumulation of charge in an object, it becomes electrically charged. An electrically charged object produces an electric field in its vicinity, which exerts a force on other charged objects. An electrically charged object can be used to attract objects with an opposite charge or repel objects with the same charge.

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A&L Engineering, as an engineer, you've been tasked with evaluating the durability of three common materials used in the design of cell phone cases.

These materials include:Carbon FiberPolycarbonateTPUExplanation:Carbon fiber is a lightweight, durable, and corrosion-resistant composite material. It is often used in the aerospace, automotive, and sporting goods industries.Polycarbonate is a thermoplastic polymer that is strong, shatter-resistant, and lightweight. It is often used in the production of CDs, DVDs, and eyeglass lenses.

TPU (thermoplastic polyurethane) is a flexible, soft material that is abrasion-resistant and provides excellent impact protection. It is often used in the production of phone cases, as well as sporting equipment and medical devices.To evaluate the durability of these materials, you can conduct a series of tests to measure their resistance to impacts, scratches, and bending.

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When a neuron is at resting potential, the state of the electrical charge is negative inside the neuron compared to the outside

Because of an unequal distribution of ions like potassium (K+) and chloride (Cl-) inside and outside the neuron, the interior of the neuron is negatively charged at resting potential. The membrane of the neuron is selectively permeable, permitting certain ions to pass while preventing others from doing so. A gradient in electrochemistry results from this.

Ion channels, notably the sodium-potassium pump, which actively transfers sodium ions (Na+) out of the neuron and potassium ions (K+) into the neuron, are responsible for maintaining the resting potential. As a result, the neuron produces an excess of negative charge within and an excess of positive charge outside.

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A tentative explanation for a natural phenomenon describes hypothesis .

A straightforward hypothesis can indicate that there is a causal relationship—that is, that one variable affects the other—between two variables. Here's an illustration: Higher grades are the result of more time spent preparing for a test. The number of hours spent studying is the independent variable in this statement, and the result is the dependent variable. The independent variable is altered while the dependent variable is evaluated to ascertain how the dependent variable is impacted by the independent variable. Similar to a simple hypothesis, a complex hypothesis has two or more independent variables and/or two or more dependent variables.

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Mechanical energy is of two types,

1. Kinetic energy

2. Potential energy

When the girl is at the top of her jump, the speed of the girl becomes zero.

Thus, the kinetic energy of the girl at the top of her jump is,

where m is the mass of the girl and v is her speed,

Substituting the known values,

Thus, the kinetic energy of the girl is zero at the top of her jump.

The potential energy of the girl at the top of her jump is,

where g is the acceleration due to gravity and h is the height of the girl,

Thus, the potential energy of the girl at the maximum height is maximum.

Hence, the mechanical energy of the girl at the top is in potential energy form because her kinetic energy is zero at the top of her jump.

In a collision, the car usually collides with another object, like a wall or another vehicle, which provides the impulse to bring the car to a halt.

Usually, the interior of the automobile, such as the airbag or seatbelt, exerts a force on the dummy to slow it down and prevent it from traveling any faster. This object gives the impulse to bring the dummy to a halt.

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The new angle of deflection of the north pole of the compass needle compare to its initial deflection is smaller.

The new angle of deflection north pole becomes smaller

The angle of deflection is the angle formed when an object changes course from its original course of direction or target.

The angle of deflection of a particular particle is directly proportional to its charge to mass ratio as it passed through an electric field.

As the wire is continuously being lowered farther from the compass, the angle of deflection of the north pole continues to become smaller when compared to its initial deflection.

Therefore, the new angle of deflection of the north pole of the compass needle compare to its initial deflection is smaller.

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Answer:

6m/s

Explanation:

formula used; S= d/t

the "7th Street"doesn't matter it's just apart of the scenario. The only thing that matters is the distance and time which we have. the speed in seconds is 6. I had the same question on my phsyics quiz lol.

Answer:

The planet's mass and size determine the gravity of a planet

Explanation:

The smaller and less mass a planet has, the less gravitational pull it has on things and vice versa. The same can be applied with all living things, we all have an extremely small gravitational pull.