a car (m = 851 kg) is following a curve of radius 471 m and has a speed of 20.1 m/s. determine the centripetal force on the car.

When a fragment of bone containing carbon-14 isotopes of the element carbon is discovered during an archaeological dig, and it is estimated to be approximately 23,000 years old, one can calculate the proportion of the carbon-14 isotopes that remains.

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The instrument which is used to control current in an electric circuit is rheostat.

Hope this helps :)

Answer:

or bhai kya haal h

hum bhi india se hi h

In the given information, we are provided with the characteristics of Color in different subpopulations based on Size. The first two points state that in the population with Size equal to "Small," the proportion of elements with Color equal to "Blue" is 0.5 and the proportion of elements with Color equal to "Red" is 0.5. Similarly, in the population with Size equal to "Medium," the proportion of elements with Color equal to "White" is 0.5 and the proportion of elements with Color equal to "Red" is 0.5. However, the third point specifies that in the same population with Size equal to "Medium," the proportion of elements with Color equal to "White" is 1.

From this information, we can conclude that in the entire population, the distribution of Color is as follows: 50% Blue, 25% Red, and 25% White. This means that in the entire population, half of the elements have the Color Blue, while the remaining half is divided equally between Red and White.

Furthermore, to determine the proportion of elements with Color equal to "Blue" and Size equal to "Small," we need to consider that the given information does not provide the proportion of elements with Color Blue in the population with Size equal to "Small." Therefore, we can only assume that the proportion of elements with Color equal to "Blue" and Size equal to "Small" is equal to the proportion of elements with Color equal to "Blue" in the entire population, which is 50%. Hence, the proportion of elements with Color values equal to "Blue" and Size values equal to "Small" is 25%.

Lastly, in the subpopulation with Size equal to "Medium," it would not have been possible for the proportion of elements with Color equal to "Red" to be 0.75.

This is because the given information states that the proportion of elements with Color equal to "Red" in the population with Size equal to "Medium" is 0.5. Therefore, the maximum proportion of elements with Color equal to "Red" in the subpopulation with Size equal to "Medium" can only be 0.5.

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The mass of the first block will be three times the mass of the second block.

According to Newton's second law of motion, the force acting on a body is directly proportional to the acceleration as shown;

\(F\ \alpha \ a\)

\(F = ma\)

F is the acting force

m is the mass

a is the acceleration of the body

Given the following parameters

Constant force F =  1N

For the first block with the acceleration of "a"

1 = m₁a

a = m₁/1

m₁ = a .................1

For the second block, acceleration is thrice that of the first. This means;

F = m(3a)

1 = 3ma

\(m_2=\frac{1}{3a}\) ..........................2

Divide both equations

\(\frac{m_1}{m_2} =\frac{a}{(\frac{1}{3a} )}\\\frac{m_1}{m_2} = 3\\m_1 = 3m_2\)

From the calculation, we can conclude that the mass of the first block will be three times the mass of the second block.

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In the balloon simulation, the red circles represent positive charges.

Electrostatics is the branch of physics that studies electric charges at rest. The interaction between electric charges is the foundation for electrostatics. These interactions can either be repulsive or attractive, depending on the types of charges. Electrostatics plays an important role in many aspects of our daily lives.
For example, we use it in the design of electrical circuits, lightning rods, and particle accelerators. The simulation demonstrates the following electrostatic principles: Like charges repel and opposite charges attract.

Each balloon has an equal amount of positive and negative charges when it is neutral.When a balloon is rubbed, electrons are transferred from one surface to the other, creating an imbalance of positive and negative charges.The excess charge is spread over the surface of the balloon. This charge creates an electric field.

As the balloon is rubbed, some of the electrons from the balloon's surface are transferred to the wool. The balloon becomes positively charged while the wool becomes negatively charged. As the balloon is brought closer to the wall, the positive charges on the surface of the balloon repel the positive charges on the surface of the wall.

This repulsion results in the balloons sticking out from the wall, indicating that the charges on the balloon are repelling the charges on the wall.The red circles in the simulation represent the positive charges.

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An atom with great electronegativity is able to attract electrons towards itself in a chemical bond. This means that it is able to form strong covalent bonds with other atoms, and can also participate in ionic bonding by attracting electrons away from other atoms.

Additionally, an atom with high electronegativity is able to exert a greater degree of control over the distribution of charge within a molecule, making it an important factor in determining the overall reactivity and behavior of the molecule.

Electronegativity is a measure of an atom's ability to attract electrons towards itself when it is part of a chemical bond. In other words, it is a measure of an atom's ability to pull electrons away from other atoms in a molecule. Electronegativity is an important concept in chemistry, as it helps predict how atoms will behave in chemical reactions.

Electronegativity is typically measured on a scale called the Pauling scale, named after the American chemist Linus Pauling. The scale ranges from 0.7 (for the least electronegative element, francium) to 4.0 (for the most electronegative element, fluorine). Elements towards the right side of the periodic table, such as the halogens and oxygen, are generally more electronegative than elements towards the left side, such as the alkali metals.

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Answer:

  175 m

Explanation:

The average velocity for constant acceleration is the average of the beginning and ending velocities. That is (0+39)/2=19.5 m/s. If the bicyclist rides for 9 seconds, the distance traveled is ...

  (9 s)(19.5 m/s) = 175.5 m

She would travel 175.5 meters in that time.

The distance traveled by the bicyclist at the same time period is 175.5 m.

Your question not complete, i believe it is missing this additional information below:

"Seven bicyclist are racing. Each bicyclist rides for 9s, If a bicyclist, with initial velocity of zero, steadily gained speed until reaching a final velocity of 39m/s, how far would she travel during the race in the same amount of time?"

The given parameter:

initial velocity of the bicyclist, u = 0

final velocity of the bicyclist, v = 39 m/s

time of motion of the each bicyclist, t = 9s

To find:

Let the distance traveled by the bicyclist = s

The distance traveled by the bicyclist at the same time period is calculated as;

\(s = (\frac{u+v}{2} )t\\\\s = (\frac{0 + 39}{2} ) \times 9\\\\s = 19.5 \times 9\\\\s = 175.5 \ m\)

Thus, the distance traveled by the bicyclist at the same time period is 175.5 m.

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The smallest sound power output of the airplane motor that can be listened to on the ground is  6.73 × 10^-6 W which has the lowest-intensity sound that is still loud and has an intensity of  10^-12 W/m^2.

The intensity of sound =  10^-12 W/m^2

Altitude =  6,500 m.

Calculate the smallest sound energy output of an aircraft motor that can be heard on the ground is done by using the formula:

I = P/(4πr^2)

Pythagoras' theorem is used for calculating the distance

d = (\(\sqrt{6500^2 + R^2}\))

I = 10^-12 W/m^2

d = \(\sqrt{6500^2 + R^2}\)

d = 6500 m

P/(4πd^2) = I

\(P/(4π(6500)^2) = 10^-12 W/m^2\)

\(P = 4π(6500)^2 × 10^-12 W\)

P = 6.73 × 10^-6 W

Therefore, we can conclude that the smallest sound power output of the aircraft engine that can be heard on the ground is  6.73 × 10^-6 W.

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Relative to the movement of the building,  a mass damper on the roof of an earthquake resistant building move in the opposite direction.  The correct option is C.

Mass dampers absorbs the kinetic energy of the waves, converting them into the heat energy. This heat energy is dissipated to the hydraulic fluid.

The mass dampers used on roof of the buildings are called as the tuned mass dampers. They are also known as seismic dampers. When seismic wave strikes the building, it vibrates and sways. The kinetic energy of theses waves are absorbed by movement of the mass damper. The kinetic energy is converted to the heat energy which in turn is transmitted to the fluid.

Relative to the movement of the building, a mass damper on the roof of an earthquake resistant building move in the opposite direction.

Thus, the correct option is C.

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For Kepler's third law this can be solved as normal ratios

The number of asteroids which will be detected during the second measurement is 1333.34.

These are referred to objects which revolve round the sun and are characterized by their small rocky shape.

Kepler's third law can be used to solved it using normal ratios

1000/60=x/80

100/6 = x/80

6x = 8000

x= 8000/6

x=1333.34asteroids

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The width of the central bright fringe becomes wider in the resulting diffraction pattern of a single-slit diffraction experiment.

Diffraction of light is the act of bending light around corners such that it spreads out and brightens areas where a shadow is predicted. In general, it is difficult to discern between diffraction and interference because both take place concurrently. The silver lining we observe in the sky is due to light diffraction. When the sunshine breaks through or catches the cloud, a silver lining appears in the sky.

We can investigate the phenomenon of light bending, or diffraction, in the single-slit diffraction experiment. This phenomenon permits coherent light from a source to interfere with itself and produce the diffraction pattern, a discernible pattern on the screen. Diffraction is visible when the sources are small enough to be compared to the wavelength of light.

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ANSWER

EXPLANATION

If force F keeps the object in equilibrium

Answer:

See below

Explanation:

Find the x components of all of the forces shown, add them together, the x-component of the force F will be exactly opposite ( same magnitude but 180 degrees different)

30 cos 55  +     40 cos 205   +   50 cos 320  =  19.26    <====x component sum of all of the forces shown

F  (the x component of ) will be   Either    - 19.26   At zero degrees

                                                                 Or 19.26 at 180 degrees

After then, the meteorite accelerates quickly to achieve its terminal speed, which is between 200 and 400 miles per hour (90 to 180 meters per second).

The meteorite then swiftly reaches its final velocity, which is between 200 and 400 miles per hour (90 to 180 meters per second). The terminal velocity is the speed at which the acceleration caused by gravity is precisely cancelled out by the deceleration caused by atmospheric drag.

Researchers first classify the sort of rock in their investigation before dating the meteorite to ascertain its origin. Nakhla indicated that it originated 1.3 billion years ago, a significant amount of time after the majority of other meteorites, which date from the Solar system's creation, 4.56 billion years ago.

Meteorites are priced and sold by the gram because they are so rare. Price is influenced by a number of factors, including demand, scarcity, supply, specimen size, specimen quality, and preparation effort. The average cost per gram of a common iron meteorite is between US$0.50 and US$5.00.

Therefore, the correct answer is option d) a typical meteorite's weight, surface area, and coefficient of drag.

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The process that indirectly removes carbon from Earth's atmosphere among the given options is (A) Formation of carbonate deposits.

This process involves the combination of carbon dioxide (CO2) with calcium or magnesium ions, ultimately forming solid carbonate compounds such as limestone.

These compounds are then deposited in Earth's crust, effectively removing carbon from the atmosphere.

This process helps in maintaining the carbon balance on our planet, as it counteracts other processes like outgassing by volcanoes and respiration by mammals and anaerobic bacteria, which release carbon into the atmosphere.

Photodissociation by ultraviolet light doesn't directly remove carbon from the atmosphere but breaks down certain molecules.

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The force responsible for the acceleration of the crate is the frictional force between the crate and the bed of the truck.

When the truck accelerates, the crate tends to remain at rest due to inertia. However, the frictional force between the crate and the bed of the truck acts in the forward direction, allowing the crate to accelerate along with the truck.

This frictional force is a result of the interaction between the surfaces of the crate and the truck bed. Without this frictional force, the crate would slide or move independently from the truck's acceleration.

The frictional force arises due to the microscopically rough surfaces of the crate and the truck bed. As the two surfaces are pressed against each other, intermolecular forces come into play, resulting in the generation of the frictional force

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Answer:

what is the number

Explanation:

Answer:

Radio Waves

Explanation:

It's all about the Electromagnetic Spectrum.

From longest to smallest Wavelength :

Radio waves, microwave, infrared, visible, ultraviolet, x-ray, and lastly gamma-ray radiation.

Additional :

since Wavelength is inversely proportional to frequency, the highest Wavelength will have the lowest frequency.

The automobile battery has the greater mass compared to a king-size pillow. Mass refers to the amount of matter present in an object and is usually measured in kilograms or grams. An automobile battery typically weighs around 20 to 30 pounds or approximately 9 to 14 kilograms, while a king-size pillow usually weighs around 2 to 3 pounds or approximately 1 to 1.5 kilograms.

The Mass is an important concept in physics as it plays a crucial role in determining an object's gravitational force, acceleration, and momentum. In this case, the automobile battery has a greater mass compared to the king-size pillow, which means that it will have a stronger gravitational force and will be more difficult to move or stop. This is why car batteries require specialized equipment to lift and handle, while pillows can be easily moved by hand. In summary, the answer to the question is that the automobile battery has the greater mass. It is important to note that both objects have mass, but the battery has a greater amount of matter present in it compared to the pillow.

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The part of the microscope that the objectives are attached to is called the (C) nosepiece.

The nosepiece is a rotating mechanism located below the microscope's body tube. It holds the objectives, which are the lenses responsible for magnifying the specimen. The nosepiece typically has multiple positions, allowing the user to switch between different objective lenses for varying levels of magnification.

This convenient feature eliminates the need to manually remove and replace objectives when changing magnification. By rotating the nosepiece, different objectives can be brought into position above the specimen. This allows for quick and efficient adjustments in magnification without disrupting the viewing process.

Hence, the nosepiece plays a critical role in the microscope's functionality by providing a convenient way to switch between objectives and adjust the magnification level.

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Here is the complete question:

What is the name of the part of the microscope that the objectives are attached to? (Choose the best answer)

A. Ocular

B. Stage

C. Nosepiece

D. Arm

Answer:

i = 5.28 A

Explanation:

The magnetic force is given by the expression

          F = i l x B

the bold letters indicate vectors, let's write the modulus of that expression, where the direction between the conductor and the magnetic field is 90º, therefore the sine 90 = 1

           F = i l B

           i = F / l B

let's reduce the length to the SI system

           l = 10 cm (1m / 100 cm) = 0.10 m

let's calculate

           i = 12.9 / 0.1 3.6

           i = 5.28 A

The mass of Sylvanite that you would need to dig up approximately 264.29 grams of sylvanite to obtain 74.0 grams of gold.

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

To determine the amount of sylvanite needed to obtain 74.0 g of gold, we can use the fact that sylvanite contains 28.0% gold by mass.

Let's assume the mass of sylvanite required is represented by "m" (in grams).

The mass of gold in the sylvanite can be calculated as:

Gold mass = 28.0% of m = (28.0/100) * m = 0.28m

According to the problem, the gold mass required is 74.0 g. We can set up the following equation:

0.28m = 74.0

To solve for "m", we divide both sides of the equation by 0.28:

m = 74.0 / 0.28 ≈ 264.29

Therefore, to get 74.0 grammes of gold, you would have to dig out about 264.29 grammes of sylvanite.

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If the efficiency of this power plant is 70 % of the maximum possible value, 862,920,000 J of heat must be thrown into the river.

The heat that must be dumped into the river will be calculated using the energy conservation law. The energy that goes into the power plant, minus the work done by the plant and the heat that goes into the river, is equal to the energy that is converted into electricity. Therefore, the energy conservation law is expressed as:

E in = E out or E in - E out = 0

The energy going into the power plant is 800,000 kW, and the work thrown into the river is 300 kW; therefore, the energy leaving the plant is (800,000 - 300) kW or 799,700 kW. The efficiency of the plant is 70 percent; therefore, 70 percent of the maximum energy that can be used is converted into electrical energy.

Since the maximum energy that can be used is equal to the energy going into the plant, the electrical energy produced is:

0.7 x 800,000 kW = 560,000 kW

The energy not converted into electrical energy is:

E in - 560,000 kW = 239,700 kW

To compute the heat to be thrown into the river, this amount must be converted into energy or heat:

239,700 kW x 3,600 s = 862,920,000 J

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Answer:

The uniy which is accepted all over the world is called SI unit.

Explanation:

The system of measurement that is agreed by the international convention if scientists that is held in paris of France to adopt an international unit is called SI unit unit.

Answer:

The light traveling in any one direction in a straight line is called a ray of light. A group of light rays given out from a source is called a beam of light.

Explanation:

Candle and electric bulbs. The rays coming out from the candle and electric bulb is divergent beam of light.A beam of light is made up of bundles of closely spaced parallel rays.

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Answer:

The light going in any one course orderly is known as a beam of light. A light beam gathering from a source is known as light emission.

That's the definition of a beam of light.

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Answer:

centripetal acceleration

just took the test

The center-seeking change in velocity of an object moving in a circle is said to be centripetal speed.

Acceleration often deals with the rate of change in velocity of an object.

Velocity can be measured by dividing the distance travelled by an object versus the time interval it took to cover that distance

In uniform circular motion, the direction of the velocity often change a lot, so there is always an associated acceleration.

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Answer:

If we’re talking about objects on the Earth, the gravitational potential energy is given by:

Explanation:

PEg=mgh

so the energy is proportional to the mass ( m ), but also to the strength of the gravitational field ( g ), and the height ( h ) to which the mass is lifted.

Answer:

d. 0.48

Explanation:

The potential difference between the two ends of the circuit is the electric potential difference. The electric potential difference and the work will be 10V and 1.6 x 10^-18 J respectively.

An electric field is an electric property that is connected with any location in space where a charge exists in any form. The electric force per unit charge is another term for an electric field.

The given data in the problem is given by;

E is the electric field = (200 N/C)

d is the distance = 5.0 cm.=0.05 m

Q is the charge of electrons= 1.602 x 10^-19 C

The formula for electric potential  is given by;

\(\rm V=Ed\)

\(\rm V=Ed \\\\ \rm V=200 \times 0.05 \\\\ \rm V= 10 \frac{Nm}{C} = 10 \frac{J}{C} = 10 V.\)

The work is defined as the product of the potential difference and charge of an electron.

\(\rm W= 10 \times 1.602 x 10^{-19} \\\\\ \rm W= 1.6 x 10^{-18 }J\)

Hence the electric potential difference and the work will be 10V and 1.6 x 10^-18 J respectively.

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first part is 10 second part is 1.6