The number of kilograms of hydrogen that pass per hour through a 6-mm thick sheet of palladium having an area of 0.25 m2 at 600 C = 4.08 × 10^-3 kg/h
Given details in the question:
Thickness of the sheet of palladium = 6mm
Area of the sheet = 0.25 m2
Temperature = 600oC
Diffusion coefficient= 1.7x10-8 m2/s
Low pressure sides = 2.0
High pressure sides = 2.0
Explanation;
This problem calls for the mass of hydrogen, per hour, that diffuses through a Pd sheet.
M = JAt = -DAt (ΔC/Δx)
Where D = 1.7 × 10^–8 m2/s, A is area; 0.25 m², t =3600s/h
ΔC =( 0.4 - 2.0) kg/m³, Δx = 6 mm or 6 × 10^-3 m
Therefore;
= -(1.7 × 10^–8 m2/s)(0.25 m²)(3600 s/h) [(0.4 - 2.0) kg/m³)/6 × 10^-3]
= 4.08 × 10^-3 kg/h
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The following statements are all true. Which one counts as an "exception to the rule" in being unusual for our solar system? Venus does not have a moon. Jupiter has a very small axis tilt. The diameter of Earth's Moon is about 1/4 that of Earth. Saturn has no solid surface. The diameter of Earth's Moon is about 1/4 that of Earth.
The Earth's Moon, whose diameter is roughly 1/4 that of the Earth, stands out as exceptional for our solar system.
What system of the sun are we in?Although there are more than 3,200 other stars in our galaxy with planets around them, only our planetary system is officially referred to be a "solar system" by astronomers. A star with planets surrounding it, the solar system is just one example of a planetary system.
How much longer will Earth exist?When Earth's surface temperature rises four billion years from now, a runaway greenhouse effect will result, producing conditions that are more extreme than those on Venus right now and heating the planet's surface to the point of melting. By then, all life on Earth will have vanished.
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Complete the following sentence: The higher the frequency of an electromagnetic wave, the____ the wavelength. longer | shorter
The wavelength of an electromagnetic wave decreases with increasing frequency.
What are frequency and wavelength?The wavelength, which also refers to troughs, is the separation between two wave crests. The number of vibrations that span a particular area in a second is known as the frequency, which is measured in cycles per second (Hz) (Hertz).
What is the SI unit and wavelength?The distance a wave may travel in one cycle is called its wavelength.. The SI unit for wavelength is the metre, and the wavelength sign is (m). One metre is the distance travelled by light travelling in a vacuum at a time of 1/(3 x 10) as a unit of speed and distance.
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Two planes leave new york at 10 a. M. , one heading for europe at 600 mph and one heading in the opposite direction at 150 mph. (so it isn't a jet!) at what time will they be 900 miles apart? how far has each travelled)?.
The planes will be 900 miles apart at 11:12 am.
Speed = Distance / time
Distance = Speed x time
In t hours, first plane travels = 600 t miles
In t hours, the second plane travels =150 t miles
After t hours the distance between the two planes is:
(600t+150t)= 750t ( since both travel in opposite directions)
When the distance is 900 miles:
750t= 900
Solve for t:
t= 900/750
t= 1.2 hours
After 1.2 hours.
1.2 x 60 = 72 minutes = 60 +12 = 1 hour and 12 minutes
Since both leave at 10 pm:
10am + 1 hour and 12 minutes : 11:12 am
They will be 900 miles apart at 11:12 am
Each one traveled:
Plane 1:
Distance: Speed x time = 600 mph x 1.2 = 720 miles
Plane 2:
Distance = Speed x time = 150 mph x 1.2 = 180 miles
What is distance?
An aeroplane or spacecraft's altitude can be used to determine how far away from Earth it is by measuring the distance between their nearest points. In Euclidean geometry, the same notion of distance is used to define perpendicular distance between affine subspaces, distance from a point to a line, and distance from a point to a plane.To know more about distance, click the link given below:
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a road able to support heavy loads. it was made out of crushed, packed stones/gravel and clay. True or false?
A road able to support heavy loads. it was made out of crushed, packed stones/gravel and clay is true because it was made out of crushed, packed stones/gravel and clay.
Cobblestone roads are a type of paved road that was commonly used in the past and is still used in some parts of the world today. It consists of small rounded stones that are tightly packed and held in place by a mixture of clay or sand.
The stones used in cobblestone streets are usually made of granite or other hard, durable material that can withstand the weight of heavy loads and resist erosion.Known for its durability and longevity Cobbled streets were often used in towns and cities to provide a smooth surface for horse-drawn carriages and other means of transportation. They are still used today in historic areas and as decorative elements in landscaping.
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________ refers to the minimum amount of stimulus energy required to be detected 50% of the time.absolute thresholddifference thresholdjust noticeable differencetransduction
Absolute threshold refers to the minimum amount of stimulus energy required to be detected 50% of the time.
What is the absolute threshold?An absolute threshold is the lowest intensity of stimulation that can be recognized at least half of the time. The phrase is frequently used in neuroscience and experimental research and can refer to any input detectable by the human senses, including sound, touch, taste, sight, and smell.
In a sound detention experiment, for example, researchers may play a sound at varied volumes. The absolute threshold is the lowest level that a person can hear.
It is crucial to remember, however, that at such low levels, people may only register the stimulation a portion of the time.
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What are the monocular and binocular depth cues?
Monocular depth cues are visual cues that can be perceived with one eye, while binocular depth cues are visual cues that require both eyes to be perceived.
Monocular depth cues include:
- Relative size: Objects that are closer appear larger than objects that are farther away.
- Linear perspective: Parallel lines appear to converge as they get farther away.
- Interposition: Objects that are closer block the view of objects that are farther away.
- Texture gradient: The texture of an object becomes less detailed as the object gets farther away.
- Light and shadow: The way light falls on an object can give the impression of depth.
Binocular depth cues include:
- Retinal disparity: Each eye sees a slightly different image of an object, and the brain uses the difference between these images to judge the distance of the object.
- Convergence: The closer an object is, the more the eyes have to turn inward to focus on it.
Both monocular and binocular depth cues are important for perceiving depth and distance in the world around us.
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what is a colloid osmotic pressure
Colloid osmotic pressure is the oncotic pressure which is opposite to the hydrostatic blood pressure.
What is the colloid osmotic pressure?Oncotic pressure is the colloid osmotic-pressure. It is a form of osmotic pressure which is induced by the proteins, notably the albumin protein, in a blood vessel's plasma which causes a pull on the fluid back into the capillaries in the body. Participating colloids displace the water molecules, thus creating a relative water molecule deficit with the water molecules moving back into the circulatory system in the body within the lower venous pressure end of capillaries.
Colloid osmotic-pressure has the opposing effect of both the hydrostatic blood pressure pushing water molecules and the small molecules which are out of the blood into interstitial spaces within the arterial end of the capillaries and interstitial colloidal osmotic pressure. These interacting factors can determine the partition balancing of extracellular water between the blood plasma and outside the blood stream.
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a 25.0 ohm resistor and 40.0 ohm resistor are connected are onneted in series, and attached to a battery. A current of 0.255 Amps flows through the circuit. what is the voltage of the battery? (unit = V)
The battery has a voltage of roughly 16.6 V.
How do you use a resistor to change 5 V to 3.3 V?an easy downshifter with resistors. A resistive divider is the most basic step-down circuit that is feasible. Put the 5V output through a series of resistors and then tap the 3.3V logic input. An applied 5V input should result in a 3V output from a chain of 2.2k and 3.3k resistors.
When resistors are connected in series, the circuit's overall resistance is the sum of its component resistances:
R_total = R_1 + R_2 + ...
R_total = R_1 + R_2 = 25.0 ohm + 40.0 ohm = 65.0 ohm
The current flowing through the circuit is given as 0.255 Amps.
We can use Ohm's law to calculate the voltage of the battery:
V = I × R_total
Substituting the values, we get:
V = 0.255 A × 65.0 ohm ≈ 16.6 V
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A fully charged capacitor initially has an air gap and is disconnected from the battery. A dielectric material is inserted between the plates
What happen to the free charge at surface of the capacitor plates and the total charge free and bound at the surface of the capacitor plates?
When a dielectric material is inserted between the plates of a charged capacitor, the free charge on the surface of the plates will remain unchanged, while the total charge (free and bound) on the surface of the plates will decrease.
What is dielectric material?
A dielectric material is an insulating material that can store electrical energy in an electric field. In other words, it is a material that has a high resistance to the flow of electric current and does not conduct electricity.
Dielectric materials are commonly used as insulators in capacitors, which are electronic components that store electrical energy in an electric field. When a dielectric material is placed between the plates of a capacitor, it increases the capacitance of the capacitor, allowing it to store more electrical energy.
Examples of dielectric materials include air, glass, ceramics, and certain plastics. The properties of a dielectric material, such as its dielectric constant, determine how effective it is at storing electrical energy in an electric field.
Overall, dielectric materials play an important role in many electrical and electronic devices, including capacitors, transformers, and other components that use electric fields to store and transfer electrical energy.
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Which one of the following statements is true concerning the electrostatic charge on a conductor?A) The charge is uniformly distributed throughout the volume.B) The charge is confined to the surface and is uniformly distributed.C) Most of the charge is on the outer surface, but it is not uniformly distributed.D) The charge is entirely on the surface and it is distributed according to the shape of the object.E) The charge is dispersed throughout the volume of the object and distributed according to the object's shape.
The true statement is, the charge is confined to the surface and is uniformly distributed. Option B is correct.
This is known as the "electrostatic shielding effect". When a conductor is charged, the charges will distribute themselves on the surface of the conductor, and the electric field inside the conductor will be zero. This is due to the fact that charges in a conductor will always rearrange themselves in such a way as to minimize the energy of the system, and having charges inside the conductor would increase the system's energy.
As a result, the charges on a conductor will distribute themselves on the surface, where they can spread out as much as possible and minimize their mutual repulsion.
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A plane is flying at a height of 1200 m and has 60,000,000 J of gravitational potential energy. Calculate the mass of the plane.
Answer:
The mass of the plane is 5,096.8 meters
Explanation:
The formula for gravitational potential energy is
[tex]GPE=mgh[/tex]
Note:
[tex]GPE[/tex] is the gravitational potential energy in joules
[tex]m[/tex] is the mass in kilograms
[tex]g[/tex] is the acceleration due to gravity
[tex]h[/tex] is the height in meters
In this example we are given the height and the gravitational potential energy. Knowing that we can evaluate the mass.
[tex]GPE=60000000\\g=9.81\\h=1200\\[/tex]
[tex]60000000=m*9.81*1200[/tex]
[tex]\frac{60000000}{11772} =m[/tex]
[tex]m=5096.83996[/tex]
[tex]m=5096.8[/tex]
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A protein molecule in an electrophoresis gel has a negative charge. The exact charge depends on the pH of the solution, but 30 excess electrons is typical.
What is the magnitude of the electric force on a protein with this charge in a 1700 N/C electric field?
F = __________N
The magnitude of the electric force is 8.16 x 10⁻¹⁵ N
We solve by the formula:
q = 1.6 x 10⁻¹⁹ x 30
Solving gives:
F=Eq= 1,700 x 1.6 x 10⁻¹⁹C x 30
= 8.16 x 10⁻¹⁵ N
Definition of Electric ForceThere are two types of forces, namely touching forces and non-touching forces. These two types of forces are divided according to the presence or absence of contact.
Touch force is a force that arises as a result of direct contact or physical contact with objects. In this type of force, the force cannot exist if the objects do not touch each other. Examples of this touch force are frictional force, muscle force and spring force.
The non-contact force is the force that arises due to the presence of a field around the object that is the source of the force with the surrounding objects. Even though the objects do not touch each other, the objects around the source of the force will feel the effect, for example the electric force, the magnetic force and the gravitational force.
Based on the explanation above, it can be concluded that the electric force is a force that is generated or generated by various objects that have an electric charge. Electric force can also be interpreted as a force generated by objects that have an electric charge in an electric field.
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A uniform, rectangular block made of steel has dimensions 1.00 cm x 2.00 cm x 3.00 cm. It is placed on a wooden board, and then the board is tilted until the block begins to slide down the board. Which face of the block should be in contact with the board, so that it begins to slide at the shallowest angle? O The block will begin to slide at the same angle in each case 0 the 2.00 cm × 3.00 cm face o The answer depends on the type of steel and the type of wood. O the 1.00 cm x 3.00 cm face O the 1.00 cm x 2.00 cm face
The correct option is, that the answer depends on the type of steel and the type of wood to find the shallowest angle at which the block will begin to fall.
The block of steel is to be made and has to be placed on the wood board and the wood board is to be titled and we have to find that at which face of the block on the wood will slide the block at the shallowest angle.
The box will slide depending upon the friction, the friction is given by,
F = uMa
Where,
u is the coefficient of static friction and it depends on the nature of the wood and the steel type,
M is the mass of the block and a is acceleration
As w see that m and a are constant and only u can change so, we conclude that, the answer depends on the type of steel and the type of wood.
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What does the word Core mean?
a. The Sun's center
b. The layer of the Sun's atmosphere that looks like a halo during an eclipse.
c. The layer of the Sun's atmosphere that has a reddish glow.
d. Reddish loops of gas that link parts of sunspot regions.
The word Core means: The sun's center.
What is the core?Depending on the context, the word "core" can indicate many different things, but when it comes to the Sun, it typically refers to option the Sun's center. The nuclear fusion reactions that take place in the Sun's core are where the energy for the star is produced. The core of the sun is the area where nuclear fusion processes occur, producing a huge quantity of heat and energy. The sun's core has the highest temperature, up to a whopping 27 million degrees Fahrenheit. Since the sun's energy is produced in the core and radiates outward to its surface and beyond, the core is known as the sun.
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Spillover effect has been magnified with
Spillover effect has been magnified with the advent of globalization and the interconnectedness of economies.
What is Spillover effect?The spillover effect refers to the transmission of effects from one country or market to another. This can occur through various channels such as trade, finance, and investment. With the increasing integration of economies and financial markets, a crisis in one country or market can quickly spread to other countries, magnifying the impact of the initial shock.
In order to mitigate the negative impact of spillover effects, it is important for countries to maintain a strong and stable financial system, and to promote international cooperation and coordination in financial regulation. This can help to reduce the likelihood and severity of future financial crises, and to ensure that any negative effects are contained and quickly resolved.
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How deep underwater should you dive to quadruple the atmospheric pressure at the surface? note: 1 m = 3. 28 ft.
The depth of underwater to dive to quadruple the atmospheric pressure at the surface is 30 meters.
For every additional 10 meters deeper one dives, there is increase in pressure on your body by 1 bar. Our bodies are subject to 3 atmospheres or bars of pressure at a depth of 20 meters and 4 bar/atm at 30m.
At sea level, the pressure of the air that surrounds us is equal to 1 bar, which is every so often referred to as 1 atmosphere. If one dive to just 10 meters deep and that pressure is doubled – because water is much denser than air, it applies a much greater compressive force on your body.
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An NaCl solution is prepared by dissolving 20.0 g NaCl in 150.0 g of water at 25°C. What is the vapor pressure of the solution if the vapor pressure of water at 25°C is 23.56 torr? a.0.9304 torr
b.0.4746 torr c.21.77 torr d.0.8950 torr e.22.63 torr
According to the statement, the vapor pressure of the NaCl solution is 22.63 torr.
To calculate the vapor pressure of the NaCl solution, we need to first calculate the mole fraction of water in the solution:
moles of water = mass of water / molar mass of water
moles of water = 150.0 g / 18.015 g/mol = 8.32 mol
moles of NaCl = mass of NaCl / molar mass of NaCl
moles of NaCl = 20.0 g / 58.44 g/mol = 0.342 mol
total moles = moles of water + moles of NaCl = 8.32 mol + 0.342 mol = 8.662 mol
X(water) = moles of water / total moles = 8.32 mol / 8.662 mol = 0.9603
Next, we can use Raoult's law to calculate the vapor pressure of the solution:
P = X(water) * P°(water)
Where P°(water) is the vapor pressure of pure water, which is given as 23.56 torr.
P = 0.9603 * 23.56 torr = 22.63 torr
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_______ is a huge reddish loops of gas that often link different parts of sunspot regions.
Solar Prominence is a huge reddish loop of gas that often link different parts of sunspot regions.
What is a Solar Prominence?
A solar prominence is a large, loop-like structure of plasma that extends from the Sun's surface into its outer atmosphere. Prominences are often associated with sunspot regions and can span hundreds of thousands of kilometers. They are composed of charged particles, primarily hydrogen and helium, that are held in place by the Sun's magnetic field. The reddish color is due to the emission of light in the hydrogen alpha spectral line. Solar prominences are dynamic structures that can erupt and release huge amounts of energy into space, in the form of coronal mass ejections.
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.
why is it necessary that a force probe be calibrated?
Without calibration, the data would no longer be accurate since it would deviate from real values. Therefore, calibration is occasionally required.
A force probe measures weight in what ways?It converts an applied mechanical force—such as load, weight, tension, compression, or pressure—into another physical variable—in this case, an electrical output signal—that can be measured, converted, and standardized. The electrical signal changes in direct proportion to the force acting on the sensor.
What function does a force sensor serve?A load cell or weight sensor is often referred to as a force sensor. They are employed to gauge load, strain, and compression. A lot of them contain internal strain gauges that are attached to the metal structure and respond even to the smallest compression changing the resistance and reporting on the outcomes.
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Two steel balls that are the same mass and size are rolled with the same force across different level surfaces. The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of.
The ball rolling across the carpet will come to a stop faster than the one rolling across the concrete because of friction. Thus, B is the correct option.
The frictional force is the resistance force experienced by a moving object on a surface as a result of the opposing tendency of the surface.The smoother a surface is, the lower the frictional force it provides, and the more frictional force it offers, when the surface coarse is more.
Two steel balls would experience similar forces when rolling on two different surfaces. However, a carpeted surface is more coarse and irregular than a concreted surface.
Thus, the frictional force acting on the carpeted surface would be more and the ball would stop faster as opposed to the concrete surface.
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The correct question is:
Two steel balls that are the same mass and size are rolled with the same force across different level surfaces.The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of
A) air resistance.
B) friction.
C) gravity.
D) speed
the eccentricity aspect of the astronomical theory refers to
In astronomy, the eccentricity aspect of the astronomical theory refers to the shape of an object's orbit around another object. Specifically, it measures how much an orbit deviates from a perfect circle.
The eccentricity of an orbit is defined as the ratio of the distance between the two foci of the ellipse that describes the orbit to the length of the major axis of the ellipse. An orbit with an eccentricity of 0 is a perfect circle, while an orbit with an eccentricity of 1 is a parabola, and an orbit with an eccentricity greater than 1 is a hyperbola. In the context of the Solar System, the eccentricity of a planet's orbit determines how close it comes to the Sun at its closest approach (perihelion) and how far away it gets at its furthest point (aphelion).
For example, the eccentricity of Earth's orbit is about 0.0167, which means that its distance from the Sun varies by about 3.1 million miles (5 million kilometers) between perihelion and aphelion. The eccentricity of an orbit can have important effects on the object that is orbiting. For example, objects with highly eccentric orbits may experience significant changes in temperature or gravitational forces as they move closer to or further away from the object they are orbiting.
This can have important consequences for the object's physical and chemical processes, and may even contribute to the development of life in some cases.
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which type of switch connects all devices in a rack to the rest of the network?
The type of switch that connects all devices in a rack to the rest of the network is called a "Top of Rack (ToR) switch".
What is a Tor switch?Top of Rack (ToR) switch is a type of network switch that is typically installed in a data center or server room at the top of a server rack. The main purpose of a ToR switch is to provide high-bandwidth connectivity to the servers or other network devices within the rack and to connect them to the rest of the network.
ToR switches are commonly used in large-scale computing environments, such as cloud data centers, web hosting facilities and enterprise server rooms where they help to improve network efficiency and simplify network management.
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Around 1910, two astronomers named hertzsprung and russell discovered a relationship that the stars in the main sequence have in common. what is this relationship?
Stars with greater temperatures tend to have lower magnitudes
resourcesquizalizecom
they made the HR Diagram
Why are anions bigger than their parent neutral atom?
Anions, which are negatively charged ions, are typically larger than their parent neutral atoms. This is because the addition of an electron to the outermost energy level of an atom results in an increase in the electron-electron repulsion, which causes the electron cloud to expand.
The negative charge of the electrons in an atom balances the positive charge of the nucleus in a neutral atom. Yet, the number of electrons rises when an atom gains an electron to form an anion, leading to a larger electron-electron attraction. The atomic radius rises as a result of the electron cloud dispersing in this way.
For instance, if a neutral chlorine atom obtains an electron to form a chloride ion, the additional electron moves into the atom's outermost energy level and strengthens the electron-electron attraction. As a result, the electron cloud widens, increasing the chloride ion's atomic radius relative to the neutral chlorine atom.
As a result of the presence of an additional electron, anions are typically bigger than their parent neutral atoms.
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The fact that we always see the same face of the Moon tells us that the Moon (a) does not rotate. (b) rotates with the same period that it orbits Earth. (c) looks the same on both sides.
The correct option is B, The fact that we always see the same face of the Moon tells us that the Moon rotates with the same period that it orbits Earth.
The Moon rotates on its own axis in a process known as rotation. Like most celestial bodies, the Moon rotates in a counterclockwise direction when viewed from above its north pole. This means that as the Moon orbits the Earth, the same side of the Moon always faces us. This phenomenon is known as synchronous rotation, and it occurs because the Moon's rotation period is almost exactly the same as its orbital period around the Earth.
The Moon's rotation is not a perfect sphere, however, and it has a slight bulge at the equator. This is due to the gravitational pull of the Earth, which has caused the Moon to become slightly deformed over time. The Moon's axial tilt is also very small, which means that its poles are nearly perpendicular to its orbital plane.
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A fully charged capacitor initially has an air gap and is disconnected from the battery. A dielectric material is inserted between the platesWhat happen to the free charge at surface of the capacitor plates and the total charge free and bound at the surface of the capacitor plates?
When a dielectric material is inserted between the plates of a charged capacitor, the free charge at the surface of the capacitor plates remains the same.
However, the total charge (free and bound) at the surface of the capacitor plates increases. This is because the dielectric material polarizes in response to the electric field, which creates additional bound charges on the surface of the capacitor plates. The net effect is an increase in the capacitance of the capacitor, which results in a decrease in the electric field between the plates for a given charge, and an increase in the energy stored in the capacitor.
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How does the plant roots perceive gravity?
The root cap, a specialised organ at the apex of the root, aids plants in understanding gravity.
Why is plants roots?The portion of a plant that is underground and usually extends downward into the soil are called plant roots. The main job of the roots is to draw water and nutrients from the ground and anchor the plant in place. They are made up of a variety of specialised components, such as vascular tissue, root hairs, and caps on the roots.
Describe root cap?At the root's tip, the root cap serves as protection for the growing tip since it penetrates the ground. The surface area that is available for absorption is increased by the root hairs, which are tiny, finger-like projections that protrude from the surface of the root.
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What is the surface area of a cube that has a side length of 2. 2 meters? use the formula , where sa is the surface area of the cube and s is the length of each side. 13. 2 26. 4 29. 04 174. 24.
The surface area of a cube with a side length of 2.2 meters is 26.4 square meters. This can be calculated using the formula SA = 6s^2, where s is the length of each side.
The surface area of a three-dimensional object is a measure of the total area of all its faces combined. In the case of a cube, there are six faces, each with an area equal to the square of the side length. To find the surface area of a cube, we multiply the area of one face by six.
Using this formula, the surface area of a cube with a side length of 2.2 meters is found by squaring the side length, which gives us 4.84 and then multiplying that by six to give us 29.04 square meters.
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A ball rolling down an incline has its maximum kinetic energy at A) the top. B) halfway down. C) three-quarters of the way down. D) the bottom.
Answer:
D
Explanation:
Kinetic Energy = 1/2 m v^2
the ball will have its maximum v, (velocity), at the bottom thus this is where it will have maximum KE
The precise moment when visible light energy from the sun is captured and converted to chemical energy is called: ________
The precise moment when visible light energy from the sun is captured and converted to chemical energy is called Photosynthesis.
Define Photosynthesis.
The process by which light energy is transformed into chemical energy in the form of sugars is known as photosynthesis. Using light energy, glucose (or other sugars) are created from carbon dioxide and water, with oxygen being released as a byproduct.
When a photochemically activated specific chlorophyll molecule of the photosynthetic reaction center loses an electron through an oxidation reaction, light energy is transformed into chemical energy. Water and carbon dioxide are converted by plants into a sugar called glucose using the power of the sun. Plants use glucose as a source of energy and to create other compounds like cellulose and starch.
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