Answer:
Hence, the isotope will take about 6.645T years to reduce to 1% of its original value
What does the B in the volume formula V BH stand for?
The B in the volume formula V = BH stands for the base, which is the area of the base of the cylinder shape.
A cylinder is a three-dimensional solid shape comprising two parallel circular bases, connected by a curved surface, where the center of the circular bases overlaps each other to create a right cylinder. The formula V = BH is a formula used to calculate the volume of a cylinder. In this formula, V stands for volumes, H represents the height of the cylinder, and B indicates the area of the base of the cylinder.
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which type of photon is emitted when an electron in a hydrogen atom drops from the n=2 to the n=1
An ultraviolet type of photon is released whenever an electron inside a hydrogen atom transitions from the n-2 to the n-1 energy level.
An electron is a negatively charged neutron star that can be either free or bonded to an atom (not bound). An atom has three basic types of particles: protons, neutrons, and the electron that is connected to them.
The electrons are an atom's negatively charged building blocks. A negatively charged atom is created when all of an atom's electrons come together to balance off the positive charge that protons have inside the atomic nucleus. Electrons are the most abundant element in the universe.
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A sound wave, with an intensity of 50 w/cm2, strikes a boundary and is totally reflected. What is the intensity reflection coefficient (irc)?
The intensity reflection coefficient (irc) is 1.
What is the intensity reflection coefficient (irc)?The ratio of the intensity of the reflected wave to the incident (transmitted) wave is known as the intensity reflection coefficient.
Intensity of incident (transmitted) sound wave = 50 W/cm².
As it is totally reflected, intensity of the reflected sound wave = 50 W/cm².
Hence, intensity reflection coefficient =
intensity of the reflected sound wave ÷ Intensity of incident sound wave
= 50 W/cm² / 50 W/cm².
= 1.
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The sensation of color is seen when light falls on the eye's
a) both of these
b) rods
c) cones
d) neither of these
The sensation of colour is seen when light falls on the eye's cones.
The retina, a component of the eye, is what detects light entering our eyes. The pupil is the black hole in the centre of the eye that lets the light into the eye.
Light-sensitive cells can be found in the retina of the eye. It contains two kinds of cells known as rods and cones. Cones are the cells of retina that produce colour sensation. These photoreceptor cells are responsible for colour vision.
Rod cells are photoreceptor cells in the retina that function in dim light better than the other type of visual photoreceptor, cone cells.
Rods are employed in peripheral vision and are often clustered at the borders of the retina.
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What does the 2 in mgcl2 indicate?
The 2 in MgCl2 indicates that in the given compound there are 2 ions of Chlorine used.
As we know,
The valency of Magnesium is 2, while the valency of Chlorine is 1.
So, for forming a compound we need 2 ions of Chlorine with 1 ion of Magnesium.
MgCl2 is commonly known as Magnesium bromide which is formed by the combination of magnesium and bromine.
In chemistry for representing a diatomic molecule, or simply the molecules which have 2 atoms, we often use the symbol of the element and include 2 in the subscript for indicating that two atoms of that element are joined together.
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is b in {a1,a2,a3}? how many vectors are in {a1,a2,a3}?
There are 3 vectors are in {a1,a2,a3}.
Since W is the set of all vectors that can be written as a linear combination, there are infinitely many members in W. k₁, k₂, and k₃ are actual integers in the formula: k₁ * a₁ + k₂* a₂ + k₃ * a₃3 .
The definition of a vector is an entity with both magnitude and direction. The movement of an object between two points is described by a vector. The directed line segment can be used to graphically represent vector math.
(a). A₁, A₂, and A₃ each contain three vectors. b = (4, 1, -4) = -4 * a1 - a2 - 2 * a3. In W, the number of vectors is unlimited.
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An ant crawls 500 cm north, 300 cm west, 200 cm south, then 300 cm east. What is its distance traveled?
When an ant crawls 500 cm north, 300 cm west, 200 cm south, then 300 cm east, the distance traveled will be 1300cm.
Distance = 500 + 300 + 200 + 300
Distance = 1300cm
In a different sense, the path an object takes to traverse a certain distance while maintaining a specific speed from one point to another is known as the distance travelled. As was previously said, the distance formula combines time, speed, and distance.
Speed times time equals distance.
The entire path an object has taken can be used to define the distance of an object. For instance, if an automobile travels 5 km east, then turns to head north for another 8 km, the final distance will be 13 km.
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Why does carbon dioxide get the most attention?
Out of all the human-influenced climate factors examined by the IPCC, CO2 has the highest positive RF overall. Other gases are capable of trapping heat more effectively than CO2 does, molecule for molecule.
Why is CO2 regarded as the primary cause of climate change?When coal, oil, natural gas, and other carbon-rich fossil fuels are burned, carbon dioxide is released into the atmosphere. Despite not being the most potent greenhouse gas, carbon dioxide.
Why is carbon dioxide such a significant deal?What's so significant about CO2 is this: A greenhouse gas, that is. The atmosphere's CO2 hence helps to confine heat near to Earth. It is beneficial for Earth to retain some of the energy it receives from the Sun so that it does not entirely escape back into space.
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1. How did the rock of the Great Plains and Rocky Mountains form?
Choose the claim you can eliminate.
Responses
They formed as one rock formation, and then something separated them.
They formed as one rock formation, and then something separated them.
One rock formation formed before the other. Then, the minerals from the older rock became part of the younger rock.
One rock formation formed before the other. Then, the minerals from the older rock became part of the younger rock.
What do we still need to know in order to determine why the two rock formations have such similar minerals?
w
Evidence Card E: Rocky Mountains. Photo of the Rocky Mountains. Observations: The large mountains have jagged tops. The chunks of rock vary in size. The rock appears to be light and dark gray. There is a forest at base of the mountains.
Evidence Card C: Rock from the Rocky Mountains. Photo of a rose-colored rock with dark veins. Observations: The rock contains visible pink, dark gray, and light brown grains. The grains fit together. The grains have sharp edges. There are no bubbles or fossils in this sample.
Why can we eliminate the claim you selected?
Rock from the Great Plains and the Rocky Mountains combined to form a single rock formation, which was later destroyed. The first allegation is accurate, but the second one should be dropped.
How are rocky mountains formed?The Rocky Mountains and the Great Plains are two distinct rock formations that did not originate concurrently, and this should be kept in mind. As a result, the minerals from the older rock were not absorbed into the younger rock.There was a formation made of rock from the Great Plains and the Rocky Mountains, but something tore it apart. The second claim must thus be disregarded because it is untrue.For more information on rocky mountains kindly visit to
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what does theta and sin have to do with a pendulums harmonic motion
Answer:
are u a gìrl?????????......
Copy and paste or type your submission right here. HTML Editor X BIVA -A- IX E EDO V E - Paragraph 12pt Predict what would happen if during an accident the periosteum and the muscle were removed from a side of a long bone that is broken. Describe the advantages and disadvantages of fusing vertebrae.
The removal of the periosteum causes shock, distress, tissue damage, and skin puncture. The fusing of vertebrae increases the stability, strength, and shape of the spine. But it will add stress and increase the rate of spine degradation.
The periosteum is the covering that surrounds the bones and supplies the bone with blood, nerves, and cells they require to develop and heal. The bone receives nutrients and sensations from this.
If the periosteum and the muscle are removed because of the accident, it will cause distress and severe shock. Because the nerve in this is helpful in the sensation of pain caused by tissue damage. So when this periosteum is removed, the lack of sensation will limit the regeneration of osteoblasts.
The muscle surrounding will also affect balance, and stability. Also, cause more damage or skin puncture.
Advantages:
Fusing vertebrae helps to eliminate and remove the segmentation in the vertebral column. It helps to restore, strengthen, and stabilize the shape of the spinal cord. It also corrects deformity and reduces pain.Disadvantages:
Extra stress will be placed on the vertebrae above and below the fused part. Additionally, it speeds up the degeneration of the spine. Regional segmental mobility is also altered.To know more about periosteum:
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What is the formula for gravitational gravitation between two objects?
The formula for gravitational force between two objects is given as the product of gravitational constant and masses of the two objects, divided by the square of distance between the two objects.
The formula is given as:
= F = (G X M X m) / r²
where,
Force = F
Gravitational Constant = G
Mass of one object = M
Mass of another object = m
Distance = r
According to Newton's universal law of gravitation, The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them.
The force of attraction on a body by earth is called gravitational force. Example : The leaves and fruits fall from a tree downwards towards the ground.
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SEP Use Mathematics
Suppose a 75-kg crash dummy is in contact with
an airbag for 0.075 seconds during a crash, and the impulse delivered is
1900 N-s. Calculate the average force exerted by the airbag on the dummy
and compare that force with the gravitational force on the crash dummy.
Acceleration towards rear is 11 m/s2.
What is acceleration?Mass of dummy = 75 kg, Force acted towards rear of the car = 825 N. Force acting on a body = Mass of body * Acceleration of body
The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is accelerating.
A substance is not accelerating if its velocity is not changing. The information on the right depicts an object that is speeding as it moves northward.
Therefore, Acceleration towards rear is 11 m/s2.
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What are scope 1 3 emissions?
Direct emissions from owned or controlled sources are covered by Scope 1. The generation of the purchased electricity, steam, heating, and cooling used by the reporting company is covered by scope 2's indirect emissions. All other indirect emissions that take place along a company's value chain are covered by scope 3.
What scope, 1, or 2, is natural gas?The most frequent source of Scope 1 emissions is natural gas. Both large manufacturing companies and power companies frequently use it to produce electricity. Other industrial applications include heating, road transportation, and the production of a variety of goods like glass, steel, and plastics.
Is scope 3 a part of net zero?The organization's global scope 1, 2, and 3 emissions are included in the Net Zero target's perimeter.
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What does 2 charge mean in chemistry?
In chemistry, +2 charge indicates that if the given atom, molecule, or compound needs to lose 2 of its electrons for becoming a cation.
In chemistry,
We often use two types of symbols, one is positive and the other is negative.
If at the top of any atom/compound/molecule + is written it means that the particular atom/molecule/compound needs to lose 2 electrons, as it has 2 excess electrons, and when the atom loses 2 of its electrons then the octet of the electrons will be formed in the outermost orbit, and the atoms become cationic in the nature.
We know, Ions are usually formed by the losing or gaining of electrons,
So, we can say that, if the atom loses any electrons then + sign will be given similarly when the atom gains any electrons then the negative sign will be given.
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Can someone explain how an avalanche occurs.
Answer:
Explanation:
Thousands of avalanches occur in Canada each year. They happen in all regions of Canada, but are more frequent in the mountains of British Columbia, Yukon and Alberta. Avalanches can be triggered by wind, rain, warming temperatures, snow and earthquakes. They can also be triggered by skiers, snowmobiles, hikers, vibrations from machinery or construction. Avalanche facts:
An avalanche occurs when a layer of snow collapses and slides downhill.
Avalanches are caused by four factors: a steep slope, snow cover, a weak layer in the snow cover and a trigger.
Roads and railway tracks may be rerouted to reduce risks.
Safe avalanches may be triggered in dangerous snow packs.
Avalanches can travel up to 90 km/h.
After one hour, only one in three victims buried in an avalanche is found alive. The most common causes of death are suffocation, wounds and hypothermia.
How do orbital resonances with jupiter affect the asteroid belt?
Planetesimals' orbits were disturbed by orbital resonance with Jupiter, which prevented them from accreting into planets.
Orbital resonance happens when the gravitational forces of celestial bodies that are periodically orbiting one another interact, and this interaction is sometimes expressed as a ratio of tiny integers.
Jupiter has the ability to influence the asteroid belt since it is so large and is located very close to the asteroid belt compared to other planets. Asteroids are literally pushed out of the orbital resonances with Jupiter at the locations where they exist, leaving empty space in their wake.
Since Daniel Kirkwood, an American astronomer, was able to foresee and characterise such occurrences in the middle of the 1800s, the region has been virtually free of asteroids. Kirkwood gaps were later used to describe this paucity of asteroids in the region of Jupiter's orbital resonances.
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ANSWER SO U DONT HAVE TO( I GOT A 100 TRUST ME)
Would you personally get better results and be more motivated by participating in physical activities that are competitive or recreational? Explain your choice and choose at least five physical activities that you would be interested in participating in that fall under the category you have chosen.
ANSWER:
i would be more motivated by participating in physical activities that are recreational. Competitive activities may be a big responsibility because you have to aim for a win. If you will be exercising regularly, it will make you happy without any aim of winning in a contest. Just like playing sports such as badminton, basketball, volleyball, baseball, and soccer which need a team. These recreational activities will be advisable because you are with others who love the sport also but not treating it as a competition.
Yes i would personally get better results and be more motivated by participating in physical activities that are competitive or recreational.
My motivation would increase if I engaged in leisure physical activity. Because you must aspire for victory, competitive hobbies may come with a lot of responsibilities. Regular exercise will make you happy regardless of whether you're doing it to compete or just for the sake of it. similar to team sports like baseball, soccer, basketball, badminton, and volleyball. Because you'll be with people who share your passion for the sport but aren't competing with you, these leisure activities are a good idea.
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When Apollo 15 astronaut David Scott did his famous freefall experiment on the Moon, he dropped a falcon feather from a height of about 1.6 meters. Assuming a gravitational acceleration of 1.6 m/s2 on the Moon, about how long did it take the feather to drop to the surface?
The time taken for the feather to drop to the surface, given that the gravitational acceleration is 1.6 m/s², is 1.4 s
How do I determine the time?From motion under gravity, we understood that height and time are related according to the follwing formula:
h = ½gt²
Where
h is the heightg is the acceleration due to gravityt is the timeUsing the above formula, we can obtain the time taken for the feather to drop to the surface. Details below:
Height (h) = 1.6 metersGravitational acceleration (g) = 1.6 m/s²Time taken (t) = ?h = ½gt²
1.6 = ½ × 1.6 × t²
1.6 = 0.8 × t²
Divide both side by 0.8
t² = 1.6 / 0.8
Take the square root of both side
t = √(1.6 / 0.8)
t = 1.4 s
Thus, the time take is 1.4 s
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7
Radon-222 is radioactive. It can be represented as 222 Rn.
86
For a neutral atom of radon-222, state
1. the number of protons,
2. the number of neutrons,
3. the number of electrons.
For a neutral atom of radon-222, the number of protons is 86, the number of neutrons is 136, and the number of electrons is 86.
What is a neutral atom?A neutral atom can be described as one in which the amount of the positive charge is equal to the of amount the negative charge. Therefore, the net charge on the atom will be equal to zero. Therefore, such type of atom is said to be a neutral atom.
For a neutral atom, we usually say that the number of electrons in an atom is equal to the number of protons. All chemical elements which are arranged in the modern periodic table are in their neutral state.
Given, the atomic number of Radon-22 is 86.
Atomic number = the number of electrons = Number of protons
The number of electrons for the neutral atom of Rn = 86
The number of protons in Rn-222 = 86
The number of neutrons = 222 - 86 = 136
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Considering the factors that affect gravitational pull, in which location would the gravitational pull from the earth be smallest on you?.
The right response is travelling to the Himalayan Mountains to see Uncle Chrissy gravitational.
Objects with mass produce a force called gravity that affects other mass-containing objects. Our planet has a gravitational field, and objects can be affected by that field's force.
The Arctic Ocean's surface has the highest gravitational acceleration, at 9.8337 m/s2, while Mount Nevado Huascarán in Peru has the lowest, at 9.7639 m/s2.
This indicates that the Earth's gravity is 9.789 m/s2 at the equator and 9.832 m/s2 at the poles. In other words, this centripetal force causes you to weigh slightly more at the poles than you do at the equator. The size of an object has an impact on gravity, as does
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1 Fig. 3.1 shows an oil tank that has a rectangular base of dimensions 2.4 m by 1.5m.
Fig. 3.1
The tank is filled with oil of density 850 kg/m³ to a depth of 1.5 m.
(a) Calculate
(i) the pressure exerted by the oil on the base of the tank,
(ii) the force exerted by the oil on the base of the tank.
i) The pressure exerted by the oil on the base of the tank is 12495 Pascal.
ii) The force exerted by the oil on the base of the tank is 44982 Newton.
What is pressure?
The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure.
Density of the oil: ρ = 850 kg/m³
Depth of the tank: d = 1.5 m
dimensions of rectangular base = 2.4 m × 1.5m.
We know that: acceleration due to gravity: g = 9.8 m/s².
i) the pressure exerted by the oil on the base of the tank: P= dρg
= 1.5 m × 850 kg/m³ × 9.8 m/s²
= 12495 Pascal.
ii) the force exerted by the oil on the base of the tank:
F = pressure × area
= 12495 Pascal × 2.4 m × 1.5m.
= 44982 Newton.
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How do you calculate energy emitted by electrons?
The link between the work function, W, and maximum electron energy, E m an x, for a given wavelength, can be determined using the formula = h max, where h is the Planck constant and c is the speed of light.
What name is given to the release of electron energy in science?The electron moves to a state with higher energy after receiving the energy. The electron absorbs the extra energy and releases it by the opposite process known as emission to return to its ground state. To be in the lowest energy level, an electron requires precisely -13.6 eV of energy.
A material experiences the photoelectric effect when it is subjected to electromagnetic radiation, such as light when electrons are released. They are referred to as photoelectrons.
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a convex spherical (diverging) mirror with a focal length of 25 cm has a 4.0 cm tall object placed 100 cm in front of it. what is the position of the image relative to the mirror? (also drawing a ray diagram might help)
The position of the image relative to the mirror v = 20cm, position of the image behind the mirror.
Since object is always placed in front of the mirror
Hence, object distance will be negative
Object distance (u) = - 100cm
Focus of a convex mirror is behind the mirror
Hence focal length will be positive
Focal length (f)= + 25cm
Find position of the image
Let the image distance = v
Using formula,
[tex]\frac{1}{v}[/tex] +[tex]\frac{1}{u}[/tex] = [tex]\frac{1}{f}[/tex]
[tex]\frac{1}{v}[/tex] = [tex]\frac{1}{f} - \frac{1}{u}[/tex]
[tex]\frac{1}{v} = \frac{1}{25} - \frac{1}{-100}[/tex]
[tex]\frac{1}{v} = \frac{1}{25} + \frac{1}{100}[/tex]
[tex]\frac{1}{v} = \frac{4 + 1}{100}[/tex]
[tex]\frac{1}{v} = \frac{5}{100}[/tex]
v = [tex]\frac{100}{5}[/tex]
v = 20cm
Since v is positive
Hence, image is 20cm behind the mirror
Nature of image is Virtual and erect.
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Quantum Physics vs Newtonian Physics
Quantum physics and Newtonian physics are two different frameworks for understanding the behavior of matter and energy at different scales.
Newtonian physics, also known as classical mechanics, is based on the work of Isaac Newton and describes the motion of macroscopic objects, such as cars, planets, and baseballs. It is based on the principles of mass, force, and acceleration, and it is very successful at predicting the behavior of objects moving at speeds that are not too close to the speed of light.
Quantum physics, on the other hand, is a theory that describes the behavior of matter and energy at the atomic and subatomic scale. It is based on the idea that energy, matter, and the fundamental building blocks of the universe, such as electrons and photons, can exhibit both wave-like and particle-like properties. Quantum physics also introduces the concept of probability, which allows for the prediction of the likelihood of certain outcomes but not the exact outcomes themselves.
While Newtonian physics and quantum physics may seem quite different at first glance, they are actually complementary theories that can be used to describe the behavior of matter and energy in different situations. In many cases, the predictions of quantum physics agree with those of Newtonian physics, but there are also situations where quantum physics makes predictions that differ from those of classical mechanics.
2 containers are brought in thermal contact and allowed to reach thermal equilibrium. if container 1 initially held 78.3 kg of liquid at a temperature of 271 k, and container 2 initially held 50.6 kg of the same liquid at a temperature of 212 k, then what is their final temperature?
Their final temperature is 247.84 K.
What is thermal equilibrium?
When two physical systems are linked by a channel permeable to heat, they are said to be in thermal equilibrium if there is no net transfer of thermal energy between them. The zeroth law of thermodynamics is seen during thermal equilibrium.
Given that: container 1 initially held 78.3 kg of liquid at a temperature of 271 K, and container 2 initially held 50.6 kg of the same liquid at a temperature of 212 K.
Let the final temperature be T.
As the materials of both container 1 and 2 is same and the comes thermal equilibrium,
78.3 (271-T) = 50.6 ( T - 212 )
(50.6 + 78.3) T = 78.3*271 + 50.6*212
T = 247.84 K.
Hence, the final temperature is 247.84 K.
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Correctly label the following parts of the small intestine. Mesentery Jejunum Cecum Appendix Duodenum Duodenal flexure leum lleocecal junction leum Reset Zoom
Duodenum, duodenal flexure, mesentery, ileocecal junction, Ileum, jejunum.
A section of the small intestine. It is linked to the stomach. Food that has just left the stomach is further digested in the duodenum. It absorbs water and nutrients from meals so that the body can use the vitamins, minerals, carbs, fats, and proteins. The big intestine receives food that has been broken down in the small intestine (also called the large bowel or colon). The large intestine, which is approximately five feet long, removes the majority of the water from the meal and gives it to the body. The remainder travels via the colon and is expelled from the body as feces (stool).
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what kind of force will cause a change in an objects motion
A. gravity
B. unbalanced forces
C. zero net force
D. balanced forces
Core Lab Coaching Activity: Anatomy of the Heart ow blood moves into and out of the heart Vew Awailable Hs Right atrum Aprta Le Punanary venrle uk Pumnary Lung Puimanary Lel Triounpd valve Right venncle valve Aoric semilunar vaves Pulmonary vave The o kg t be dee ed Submt Previoun Aneswers Requent Anews X Incorrect: Try Again: One attempt remaining Part C Heart Conduation System s de r heain conran and eaan anases Auha e Cardas muao4 ms raan tar y can e eny of t an
The flow of blood from into the heart to out of the heart is given as Right atrium→tricuspid valve→right ventricle→pulmonary semilunar valve→pulmonary trunk→pulmonary arteries→lung capillaries→pulmonary veins→left atrium→bicuspid valve→left ventricle→aortic semilunar valve→aorta
The right atrium receives deoxygenated blood from the body through two large veins, the posterior (inferior) and anterior (superior) vena cava.
Through the tricuspid valve, blood is transferred from the right atrium to the right ventricle. Tricuspid valve closure occurs when the ventricle is full to stop blood from returning to the atrium.
Through the pulmonary vein, blood that has been oxygenated by the lungs enters the left atrium.
Blood can go from the left atrium into the left ventricle when the mitral valve is open. When the ventricle is full, the mitral valve closes to prevent blood from returning to the atrium.
Blood may move from the heart to the aorta and from there to the rest of the body thanks to the aortic valve.
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a wire that is 0.50 m long and carrying a current of 8.0 a is at right angles to a uniform magnetic field. the force on the wire is 0.40 n. what is the strength of the magnetic field? question 24 options: 0.010 t 0.10 t 1.0 t 10 t
The force divided by the product of the wire length and current through the wire gives the strength of magnetic field. The magnetic field here is 0.1 Tesla.
What is magnetic field strength?A magnetic field can be produced from the deflecting coil or wire carrying current. The magnetic field lines produced will be perpendicular to the field lines from the electric field.
The force acting on the combined field is the product of the magnetic field strength B, length of the wire L, and the current passing through the wire I as written below:
F = B I L
Given that the length L = 0.50 m
current I = 8 A
and force f = 0.40 N.
Thus, magnetic field strength B = F/I L
= 0.40 / ( 0.50 m× 8 A)
= 0.1 T.
Therefore, the field strength is 0.1 T.
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