Radiation can affect living cells. Which of the following uses of radiation is a non-example of this fact?
A. Treatment of cancer
B. Dating fossilized stone
C. Preservation of fresh fruits
D. Sterilization of medical equipment

Technology and science support one another's advancement. New technologies are developed using scientific knowledge. New technology frequently enable scientists to examine nature in novel ways and generate novel findings.

By introducing a new area of scientific inquiry, a change in technology can have an impact on our understanding of science. For instance, the development of the microscope allowed biologists to study species that were invisible to the eye, resulting in the development of the field of microbiology.

Building new technologies with the use of scientific information frequently leads to new observations being made about the world, which in turn leads to the development of even more scientific knowledge.

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Increasing the spring constant k, increasing the distance the spring is compressed, decreasing the mass of the ball will increase the maximum height reached by the ball.

What is meant by maximum height reached by the object?

An object thrown vertically up will rise to its maximum height in direct proportion to its initial velocity, u.

First, as compression distance and spring constant k are raised while mass is decreased, maximum height will increase. As a result, we can select the best course of action by first raising the spring constant. Next, we have the option of extending the distance. Lastly, the spring is compressed, reducing the ball's bulk.

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Answer:

0 m/s²

Explanation:

Acceleration is change in velocity over time.  The velocity is constant, so the acceleration is 0.

A solenoid 15.0-cm length and wound without 100 turns would generate a magnetic field of 5.00 x 10-5 t at 60 mA current.

The correct answer is 60mA

The magnetic field is the area that is affected by magnetism and is located around a magnet. The magnetic field is a valuable tool for explaining the distribution of the magnetic force within and around magnetic object in nature.

The surface magnetic field and Earth's magnetic field are roughly magnetic dipoles, with the magnetic field's S pole located close to the planet's geographic north pole (see Magnetic North Pole) as well as the magnetic field's N pole located close to the planet's geographic south pole (see Magnetic South Pole).

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An example of using an active solar heating system is to heat a residential or commercial building using solar energy.

Active solar heating systems utilize mechanical or electrical devices, such as pumps or fans, to actively collect, store, and distribute solar heat. These systems typically involve the use of solar collectors, which are installed on the roof or other suitable locations to capture sunlight and convert it into usable heat.

Here's how an active solar heating system works:

1. Solar Collectors: The system includes solar collectors, usually made of dark-colored materials or containing tubes with a heat-absorbing fluid. These collectors are designed to absorb the sun's energy and convert it into heat.

2. Heat Transfer: As sunlight strikes the collectors, the absorbed heat is transferred to a fluid circulating within the collectors. This fluid, often a mixture of water and antifreeze, becomes heated by the solar energy.

3. Heat Storage: The heated fluid from the collectors is then transferred to a heat storage system. This can involve a solar storage tank or thermal mass materials like concrete or water tanks that can store the heat for later use.

4. Distribution: When heat is required, the stored thermal energy is transferred to the building's heating system. This can be achieved through a heat exchanger, where the heat from the solar system is used to warm the air or water that is circulated throughout the building.

5. Backup Systems: In some cases, active solar heating systems may have backup systems like conventional heaters or boilers to provide heat when solar energy is insufficient, such as during periods of low sunlight or high heating demand.

By using an active solar heating system, buildings can take advantage of renewable solar energy to provide space heating, water heating, or both. This helps reduce reliance on fossil fuels and lowers greenhouse gas emissions associated with traditional heating methods.

It's important to note that the design and components of active solar heating systems may vary depending on the specific requirements, climate, and size of the building. However, the fundamental principle remains the same: capturing solar energy, converting it into heat, storing it, and distributing it to fulfill heating needs within the building.

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Electricity is defined as the flow of electrical current through a conductor.

A fundamental type of energy that is produced by the presence and movement of electric charge is electricity. The passage of electrons or other charged particles across a conductor, like a wire, is what defines the phenomena. It includes the creation, transmission, and use of electric energy, as well as the full field of electric phenomena.

Therefore,

Electricity is defined as the flow of electrical current through a conductor.

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If a student rings a brass bell with a frequency of 100 Hz. The sound wave travels through brass, air, and glass, then the wavelength of the wave in brass would be 47 meters, therefore the correct answer is option D.

It is a type of mechanical wave composed of the disturbance caused by the movements of the energy. A sound wave travels through compression and rarefaction in an elastic medium such as air.

As given in the problem if a student rings a brass bell with a frequency of 100 Hz. The sound wave travels through brass, air, and glass, then we have to find out what is the wavelength of the wave,

The wave velocity = Frequency of the wave ×wavelength

4700 = 100 × wavelength

Wavelength = 4700 / 100

                    =47 meters

Thus, the wavelength of the wave would be 47 meters .

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Answer:

Gases

Explanation:

The most important state of matter for the survival of human beings is the gaseous state.

 Gases are one of the most important state of matter. They are the bulk composition of the atmosphere and they condition many climatic phenomenon.

To humans beings, gases are vital for the following reasons,

I don't understand the question

Answer:

As the ball falls from C to E, potential energy is converted to kinetic energy. The velocity of the ball increases as it falls, which means that the ball attains its greatest velocity, and thus its greatest kinetic energy, at E. 19.

Explanation:

Answer:

Measurement is called the process of finding exact quantity of a substances.

Fracking has become widely used in the US, raising worries about its effects on the environment and public health. Large volumes of wastewater are produced, along with greenhouse gases like methane, hazardous air pollution, and noise.

Fracking, also known as hydraulic fracturing, is a technique for obtaining gas and oil through shale rock. With the help of a high-pressure injection of water, sand, and chemicals into bedrock, gas and oil can flow into a well and be collected for sale.

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Explain any environmental issue that arose from fluid technology.

Jordan, a 15-year-old whose parents are in jail, is considered a ward of the court. She will be temporarily placed in the care of the Nelsons until her parents can provide care again.

In a court of law, Jordan would be considered a ward or a dependent of the court. This means that the court has taken temporary legal responsibility for Jordan's well-being and has the authority to make decisions regarding her care and custody. As her parents are unable to fulfill their parental responsibilities due to being arrested and in jail, the court's intervention is necessary to ensure her safety and proper care.

Placing Jordan in the care of the Nelsons indicates that the court has determined them to be suitable temporary guardians or foster parents for Jordan during this period. The court will monitor the situation and may periodically review the arrangement to assess the parents' ability to resume their parental role or make alternative arrangements for Jordan's long-term care if necessary.

During this time, the court will act in Jordan's best interests, considering factors such as her safety, well-being, and overall welfare. The court's involvement ensures that Jordan's rights and needs are protected until such time that her parents can provide appropriate care again or until a permanent solution is found, such as legal guardianship or adoption.

It's important to note that legal terminology and procedures may vary by jurisdiction, so specific terms and processes related to Jordan's case may differ based on the applicable laws and regulations in the relevant jurisdiction.

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Given,

The initial frequency of the heartbeat, f₁=1.45 Hz

The increased heartbeat, f₂=1.55 Hz

The frequency of the heartbeat can be described as the number of occurence of the heartbeat per second. That is every second, the heart beats 1.45 times.

(a)

Thus for a minute, the number of the heartbeats is,

Thus 87 beats occur for a minute.

(b)The increase in the frequency of the heartbeat implies the increase in the number of the heartbeat for every second. And hence the beats in a minute increase when the frequency of the heartbeat increases.

(c)

The number of the beats per minute after the increase of the frequency is,

Thus after the increase in the frequency, 93 beats occur in a minute.

The time elapsed is 3229.2 days.

First-order reactions include those in radioactive decay. The reduction in radioactive nuclei per unit of time is the rate of decay, or activity, of a sample of a radioactive substance.

The Radioactive Formula is given by

                                \(N =\) N₀ \((\frac{1}{2} )^\frac{t}{T}\)

Where N₀ = The initial quantity of the substance.

           N = The quantity remained.

           T = the half-life of the decaying quantity.

           t = time elapsed

The initial quantity of the substance = 4.0 g

The quantity remained = 1.0 g

The half-life of the decaying quantity = 1620 years

Using formula;

                \(1.0 = 4.0 (\frac{1}{2} )^\frac{t}{1620} \\\)

                \(log \frac{1.0}{4.0} = \frac{1}{1620} log \frac{1}{2}\\\)

                \(log 0.25 = \frac{t}{1620} log 0.5\\\)

                \(-0.60 = \frac{t}{1620} (-0.301)\\\)

                  \(t = \frac{972}{0.301} \\\)

                  \(t= 3229.2 sec\)

Therefore, the time elapsed is 3229.2 days

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Answer:

C

Explanation:

The composition of a comet compared with that of the Sun is C "Comets are made of ice and dust, while the Sun is made of gas".

Comets are small, icy bodies that originate from the outer solar system and are composed mainly of frozen water, carbon dioxide, methane, and ammonia, along with dust and small rocky particles. When a comet approaches the Sun, its icy material vaporizes, creating a glowing coma (a hazy atmosphere around the nucleus) and a tail that points away from the Sun due to the solar wind.

On the other hand, the Sun is a giant ball of hot, glowing gas, composed mainly of hydrogen (about 73% of its mass) and helium (about 25% of its mass), with trace amounts of other elements like oxygen, carbon, and iron. The Sun generates energy through nuclear fusion reactions in its core, which convert hydrogen into helium and release a tremendous amount of energy in the process.

Therefore, the composition of a comet is quite different from that of the Sun. While both objects contain some water (in the form of ice for comets and vapor for the Sun), comets are predominantly made of ice and dust, while the Sun is predominantly made of gas, with only a small amount of solid material in its core.

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Biotechnology has played a significant role in improving human life and increasing the world's food production. However, the application of biotechnology also comes with risks and challenges that need to be addressed to ensure the safety of the environment and human health.

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Biotechnology is the use of technology to modify organisms, cells, and molecules for specific applications. Biotechnology has three main types: medical, agricultural, and industrial biotechnology.

Genetic engineering is the process of altering the genetic makeup of an organism by introducing new genes or modifying existing ones. When using cloning, the baby's genes are identical to the parent. In medicine, biotechnology is used to create drugs and therapies for diseases such as cancer, diabetes, and genetic disorders.

In agriculture, biotechnology is used to develop crops that are more resistant to pests and diseases. A benefit of genetic engineering is the ability to create crops with improved traits, while a risk is the potential for unintended consequences. A benefit of artificial selection is the ability to create desirable traits in organisms, while a risk is the potential for reduced genetic diversity.

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Answer:

To form a cyclone, warm, moist air over the ocean rises upward from near the surface. As this air moves up and away from the ocean surface, it leaves is less air near the surface. So basically as the warm air rises, it causes an area of lower air pressure below.

The main parts of a tropical cyclone are the rainbands, the eye, and the eyewall. Air spirals in toward the center in a counter-clockwise pattern in the northern hemisphere (clockwise in the southern hemisphere), and out the top in the opposite direction.

Hope this helps, have a great day/night, and stay safe!

Answer:

I believe its san andreas fault because its a fault

Explanation:

Answer:

The Mid-Atlantic Ridge

At latitude 50 degrees N, the celestial equator will cross the meridian at an altitude of 50 degrees in the north.

At latitude 50 degrees N, the celestial equator crossing the meridian refers to the moment when the celestial equator (an imaginary circle projected onto the celestial sphere) intersects the observer's meridian (a line passing through the zenith and the celestial poles). The altitude of an object in the sky is the angle between the object and the observer's horizon. In this case, we are interested in the altitude of the celestial equator at the moment of crossing the meridian.

Given the latitude of 50 degrees N, which is above the equator, the celestial equator will appear to be lower in the sky when crossing the meridian. Since the celestial equator is inclined to the celestial poles at an angle equal to the observer's latitude, which is 50 degrees in this case, the altitude of the celestial equator at the moment of crossing the meridian will be equal to the observer's latitude. Therefore, at latitude 50 degrees N, the celestial equator will cross the meridian at an altitude of 50 degrees in the north.

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Answer:

( About ) 1.1 cm / s

Explanation:

We know that the time it takes the clock's second hand to move is 60 seconds. Respectively the radius of this clock is given to be 10.5 centimeters.

_______________________________________________________

Let us apply the formula speed = distance traveled / time. Here the " distance traveled " is the circumference of the clock, or 2πr - where we can pose π as 3.14. In other words, Speed = 2πr / time. Substitute known values to solve for the Speed,

S = 2 * 3.14 * 10.5 / 60,

Speed = ( About ) 1.1 cm / s

Hope that helps!

Answer: False.Machine efficiency is a measure of how much work is produced by a machine compared to how much energy is required to operate the machine.

The ratio of useful output work divided by the total input work is known as machine efficiency. This number is frequently expressed as a percentage (100 x work output / work input).Example:

For example, if you lift a 50-pound weight 10 feet in the air using a pulley, the work done is 500 foot-pounds. However, if it took 600 foot-pounds of energy to lift the weight, the pulley system's efficiency would be calculated as follows: 500/600 = 0.83 or 83 percent.

The efficiency of a machine is always less than one, in general. It is defined as the ratio of output energy to input energy. Because of losses due to friction and other variables, the output energy is always less than the input energy. As a result, the efficiency of a machine is always less than one.Answer: False.

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The speed of this child from this surface would be 14.69 m / s

We have the formula for energy conservation as:

E - potential = E - kinetic

We have the following details with which we are to solve the problem

weight of child w = 350 N

length of rope L = 7.2m

angle θ = 12 degrees

we would have the solution as

m x 9.8m/s² x (10.2 + 1.79 - 7.2 x cos 12) = 1/2 mv²

we would have to solve out the expression that we have above. Such that :

9.8m * (11.99 - 0.9781) = 1/2 mv²

107.9 m = 1/2 mv²

cancel out m

107.9 = 0.5v²

divide through by 0.5

107.9 / 0.5 = v²

215.8 = v²

v = √215.8

v = 14.69

Hence the speed of the child at the surface of the water would be given as 14.69 m / s

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Given,

From the graph, the total displacement of the given object is d=0-7=-7 m

The total time duration, t=12 s

The average velocity is defined as the ratio of the total displacement to the total time duration.

Thus the average velocity of the given object is,

On substituting the known values,

Thus the average velocity of the given object from t=0 s to t=12 s is 0.583 m/s.

Answer:

Yes

Explanation:

This helps youngsters be empathetic citizens

A town's vitality may be measured by the sensation of a youth service initiative organized by a civic group or community service center. The given statement exists true.

The word "civic organization" directs to any group of people in a community whose primary mission exists to encourage civic, philanthropic, or religious causes.

Youth involvement in the development, monitoring, reporting, and evaluation of devices, tactics, and programs may increase their likelihood of experiencing.

In conclusion, the strength may be displayed in the youth service initiative of a civic organization or a community service center. It showed what young people can do when they enact together. Education and capacity development are two methods that have been shown to improve youth engagement.

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The mass of a baseball is too large to exhibit wave-like behavior, making the wave nature of matter insignificant.

The wave nature of matter is not important for a baseball because the mass of a baseball is too large to exhibit wave-like behavior.

According to the de Broglie equation, the wavelength of an object is inversely proportional to its mass. Since a baseball has a large mass, its wavelength is incredibly small and insignificant.

Additionally, wave-like behavior is only observable on the atomic and subatomic level, where particles have incredibly small masses.

Therefore, for macroscopic objects like a baseball, classical mechanics is a more appropriate way to describe its motion, and the wave nature of matter can be ignored.

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Answer:

they have nothing in common, the avocado turning brown is a chemical change while, the dinosaur bone turning into rocks over millions of years is a physical change.

Explanation:

d = v t

= 30 × 60

= 1800 m

Hence,

The distance covered by a car with a constant speed of 30 m/s in 60 s is 1800 m.