The electric field in the space between the two parallel conducting sheets is zero.
This is because the electric field is generated by the difference in charge between two points, and because the two sheets have equal and opposite charges, the electric field between them is zero.
electric field : A physical field created by electrically charged objects is known as an electric field. It has an impact on how charged items behave when they are close to the field. Other charged things are affected by the electric field by being drawn to or repelled by it. Electric charges or shifting magnetic fields can produce electric fields.
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a rifle with a weight of 35 n fires a 5.1-g bullet with a speed of 240 m/s.(a) find the recoil speed of the rifle. m/s(b) if a 725-n man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. m/s
The recoil speed of the rifle is 0.3423 m/s.
The recoil speed of the rifle with the man is 0.0157 m/s
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction.
The mass of the rifle is = (35/9.8) kg = 3.57 kg
The mass of the man = (725/9.8) kg = 73.98 kg
Hence, the recoil speed of the rifle = 0.0051 × 240 /(3.57 + 0.0051) m/s
= 0.3423 m/s.
The recoil speed of the rifle with the man is
= 0.0051 × 240 /(3.57 +0.0051 + 73.98 ) m/s
= 0.0157 m/s
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how many extra electrons are on this particular oil drop (given the presently known charge of the electron)? select all that app
Extra electrons are on this particular oil drop is 4.
qE=mg⇒q×1.68×10^5 =1.08×10^−14 g⇒q=6.40×10 ^−19C
q=ne⇒6.4×10 ^−19 =n×1.6×10 ^−19 ⇒n=4
Definition of ElectronElectrons are part of an atom, which can be defined as the particles that make up the atom, which have a negative charge and surround the positively charged nucleus of the atom.
It is because of the presence of electrons that an elemental atom has a neutral charge.
History of the ElectronElectrons were first discovered after the discovery of the cathode tube which emitted a weak green light.
The scientist who first discovered the electron was J.J. Thompson who also put forward the theory of the atomic model.
Light treasury can occur due to a large enough electric potential that is given to the two wires as part of the cathode tube.
The cathode rays are thought to be J.J. Thompson as a particle because it can rotate the propeller that is between the cathode and anode.
The cathode rays were then referred to as part of the constituent atoms we know today as electrons.
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If a car is moving to the left with constant velocity, one can conclude that? a. there must be no forces applied to the car. b. the net force applied to the car is directed to the left. c. the net force applied to the car is zero. d. there is exactly one force applied to the car.
When an object moves at a constant speed, it indicates that there is no net force acting on it. This results in a condition of balanced forces since all of the forces operating on the item added together equal zero.
The total force exerted on an item is known as the net force. It is the total force operating on an item in both magnitude and direction. According to Newton's second law, F = ma, the net force determines an object's acceleration, which is proportional to the net force and inversely proportional to the object's mass. An object will maintain its velocity and continue to move in a straight path at a constant speed if there is no net force acting on it. If the net force is not zero, the item will accelerate in that direction. In this scenario, the object's velocity will be altered by the net force, which could result in an increase or decrease in speed
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if the tape timer creates dots at a rate of 35 hz, what time interval in seconds does 3 successive dots represent? g
The frequency of dot production in this instance is 28 Hz since the tape timer produces 28 dots per second.
How long would it take for the sun's light to travel from space to Earth's surface—150 seconds?Light moves at a speed of 186,287 miles per second, or 299,792 kilometers per second. 1 Astronomical Unit, or the time it takes for light to journey from the Sun to Earth, is 499.0 seconds.
A second is how many?The 3rd (symbol: s) is the time unit used in the International Systems of Units (SI). It has historically been defined as 186400 of a day; this number came from the division of a day into 24 hours, 60 minutes, and then 60 seconds.
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you want to make sure your incubator is operating at correct temperature of 37* c, so you place a thermometer inside the incubator and check it every hour for five hours. you record readings of 36.9, 37.1, 37 and 37,1. is this an accurate, precise, or both......
Placing a thermostat within the incubator and checking it every hour after five hours will ensure that it is working at the proper temperature of 37 C.
The incubator is set to 37 degrees; why?Incubators are essential in clinical laboratories because temperature is a crucial physicochemical component that impacts the bacterial habitat. Temperatures between 35 and 37 degrees Celsius are ideal for human diseases to proliferate.
At 37 degrees, do eggs hatch?Eggs may hatch if the temperature is between 35 and 40.5°C (84.5 and 104.9°F). The ideal temperature (for hen) was 37.5 °C (99.5 °F), and temperatures above this point result in a reduced hatch and a rise in the number or crippled and malformed chicks. No eggs will survive temperatures over 40.5 °C (104.9 °F).
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why is a specimen smaller than 200 nm not visible with a light microscope? why is a specimen smaller than 200 nm not visible with a light microscope? it is too easy to lose on the stage. the lenses only go to 100 x magnification power. anything smaller than 200 nm cannot interact with visible light. visible light is only good at wavelengths below 390 nm. request answer
Visible light is insensitive to objects smaller than 200 nm. On stage, defeat is all too often. Only wavelengths below 390 nm are suitable for visible light.
Why can't a light microscope see a specimen that is smaller than 20 nm?Because visible light, which the microscope uses, has a specific range of wavelengths, A smaller item than the wavelength of the light cannot be imaged by the microscope.
Why is a light microscope only capable of 200 nm of resolution?It was believed throughout the majority of the 20th century that far-field light microscopy could not resolve things closer than 150–200 nanometers (see Milestone 3). Light diffracts when it travels through various media,
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if mary points her boat due north, how far from her intended landing spot will she be when she reaches the opposite shore?
If Mary points her boat north, the distance Mary will reach the other shore is 70.59 m.
The time required is,
t = 190 m/3.5 m/s
t = 54.3 seconds
Mary's time will also be displaced in the east.
x = (1.3 m/s) (54.3 s)
x = 70.59 m
Your question is incomplete but most probably your full question was:
Mary needs to row her boat across a 190 m-wide river that is flowing to the east at a speed of 1.3 m/s. Mary can row at a speed of 3.5 m/s. part an if Mary points her boat due north, how far from her intended landing spot will she be when she reaches the opposite shore?
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In what ways does a 30 meter telescope outperform a 10 meter telescope?
As said, its pictures are nine times brighter compared to those of a ten meters.
Simple explanation of how a telescope functions?Through a big aperture, considerably larger than human eyes, telescopes gather the same or more light as they can. We may see items alongside them that are undetectable to the unaided eye because they catch so much light.
What are a telescope's primary purposes?The two most crucial tasks of a camera are to gather the weak light coming from an astronomy source and to concentrate all of the radiation into a single point or picture. The majority of astronomical objects of interest are quite dim; the more illumination we can gather, the better we can examine such objects.
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a block released from rest at position a slides with negligible friction down an inclined track, around a vertical loop, and then along a horizontal portion of the track, as shown above. the block never leaves the track. the gravitational potential energy and the kinetic energy of the block are most nearly equal at which position? (consider the potential energy to be zero at position b.)
The block's gravitational potential energy and kinetic energy are approximately identical at location C.
The block has maximum potential energy at position A since it has been freed from rest, but no kinetic energy. The block's potential energy is converted to kinetic energy when it slides down the inclined track. The block has transformed all of its potential energy into kinetic energy by the time it reaches position C. At this stage, the block's gravitational potential energy and kinetic energy are approximately equal.
The block then loops around the vertical loop, gaining potential energy once more. It will lose some potential energy as it travels along the horizontal part of the rail, but the gravitational potential energy and kinetic energy of the block will not be equal again until the block reaches position B.
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suppose a clay model of a koala bear has a mass of 0.190 kg and slides on ice at a speed of 0.610 m/s. it runs into another clay model, which is initially motionless and has a mass of 0.310 kg. both being soft clay, they naturally stick together. what is their final velocity?
The final velocity of the two clay models after they stick together is 0.545 m/s.
The final velocity of the two clay models after they stick together can be calculated using the conservation of momentum principle, which states that the total momentum of an isolated system remains constant if no external forces act on it. The initial momentum of the system is the momentum of the first clay model and the final momentum is the momentum of the two clay models combined.
The momentum of each clay model can be calculated using the formula:
p = m * v,
where p is momentum, m is mass, and v is velocity.
The initial momentum of the first clay model:
p1 = m1 * v1 = 0.190 kg * 0.610 m/s = 0.116 kg * m/s
Final momentum of the combined clay models:
p_final = (m1 + m2) * v_final = (0.190 kg + 0.310 kg) * v_final
Equating the initial momentum to the final momentum and solving for v_final:
v_final = p1 / (m1 + m2) = 0.116 kg * m/s / (0.190 kg + 0.310 kg) = 0.545 m/s
So the final velocity of the two clay models after they stick together is 0.545 m/s.
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Josif is a pharmacy technician who is having a professional conversation with another staff member of the hospital. Who might Josif be interacting with? Select all that apply.
you drive your car at a constant 60 km/h along the highway. you apply the brakes until the car slows to 40 km/h. if at that moment you suddenly release the brakes, the car tends to
The moment when we suddenly release the brakes, the car tends to continue moving at 40 kilometer per hour. Thus, the correct option is B.
What is the law of motion?Newton's laws of motion are the three basic laws of classical mechanics which describes the relationship between the motion of an object and the forces which are acting on it.
These Newton's laws of motion can be paraphrased as follows when an object remains at rest, or in the motion at a constant speed in a straight line path, which are unless acted upon by a force.
Newton's law of motion states that an object at rest will remain at rest and a body in motion will remain in motion unless and until an external force is applied.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
You drive your car at a constant 60 km/h along the highway. You apply the brakes until the car slows to 40 km/h. If at teh moment you suddenly release the brakes, the car tends to:
A) decreases in speed if no other forces act
B) continue moving at 40 km/h
C) momentarily regain its higher initial speed
select all attractive forces that contribute to creating a solution of kbr in h2o?
a. Ion-dipole
b. London dispersion
c. H-bonding
d. Dipole-Dipole
The two attractive forces (a) Ion-dipole and (d) Dipole-dipole are all involved in the formation of a solution of kbr in water.
What is H2O full form?Water is most frequently used for drinking purposes. Two moles of hydrogen and one mole of oxygen make up dihydrogen monoxide, which is what it is. The object is liquid and is at room temperature. Water's chemical formula is H2O, which means that each of its molecules consists of two hydrogen atoms and one oxygen atom.
Can humans breathe H2O?Because of the limited surface area of our lungs and the fact that the lining of our lungs is designed to handle air rather than water, humans are unable to breathe underwater. There are people (Bajau Laut, sea nomads) that can hold their breath underwater for longer periods of time (up to a few minutes). Biologically speaking, it is not possible to adapt (or devolve) to living underwater in a short amount of time.
Ion-dipole interaction: This is the association of a polar solvent molecule with a solution ion (K+ or Br-) (H2O). An ion-dipole interaction occurs when an ion's positive or negative charge attracts the solvent molecule's partial positive or negative charge.
The polar solvent molecules (H2O) in the solution engage in a dipole-dipole interaction. A dipole-dipole interaction occurs when one solvent molecule's partial positive charge is drawn to another solvent molecule's partial negative charge.
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a block of wood has a mass of 6.0 g and a volume of 12.0 cm3. what is the density of the block of wood?
Answer:
The density of the block of wood can be calculated by dividing its mass by its volume.
Density = Mass/Volume
Mass = 6.0 g
Volume = 12.0 cm3 = 0.012 liters
Density = 6.0 g / 0.012 L = 500 kg/m^3
Therefore, the density of the block of wood is 500 kg/m^3.
Explain how static electricity works in at least three complete sentences. Remember to use proper
grammar and mechanics when writing your sentences.
When two objects are rubbed on their surfaces, one gets negatively charged. This polarization causes, the flow of electrons to the positive pole of another object is called the static electricity.
What is static electricity ?Static electricity is the flow of electrons that occurs due to the temporary polarization of two bodies. When a conducting surface rub on other surface, they gets electrons by frictional force.
These free flow of electrons make them negatively charged. When this negatively charged body comes in contact with a non conducting surface they latter gets polarized by the electrons of negatively charged body.
The positive charges of the nonconducting surface gets attracted to the negative body and the electrons flow from the negatively charged body to the partially polarized positive body. This is called static electricity.
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the abs system prevents the wheels from locking or skidding, no matter how hard the brakes are applied or how slippery the road surface. group of answer choices true false
It is true that the Anti-Lock Braking System (ABS) helps prevent the wheels from locking or skidding when the brakes are applied, even on slippery road surfaces.
What is friction?Friction is the force that prevents solid surfaces, fluid layers, and material components from sliding against each other. There are several kinds of friction: Dry friction is the force that opposes the relative lateral motion of two in touch solid surfaces. Friction is the force that prevents one solid item from slipping or rolling over another. Frictional forces, such as the traction required to walk without slipping, are advantageous, but they also create a significant amount of resistance to motion. We can manage automobiles because of friction between the tires and the road: more precisely, because there are three types of friction: rolling friction, beginning friction, and sliding friction.
Here,
ABS maintains tire traction and steerability by swiftly applying and releasing the brakes, which enhances braking performance and assists the driver in maintaining vehicle control.
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Why do we find it more difficult to recognize inverted faces than other inverted objects?
Because The FFA responds to upright faces more than inverted faces, indicating that inverted faces are not perceived in the same way that upright faces are.
Are people better at Recognising upright or inverted faces?According to the face(UI) effect, perception and recognition are better for upright (U) faces than for inverted ones (I). According to the face/object(UI) effect, inversion inhibits face processing more than nonfacial object processing (e.g., buildings or cars).The fusiform face area (FFA) is a brain region situated in the fusiform gyrus with an unknown function. Some experts suggest that the FFA evolved to aid with face perception. Others believe the FFA can distinguish between any familiar stimuli.
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the moon completes one orbit around the earth every 27.3 days with respect to the fixed stars. how far (in degrees) does the moon move around the earth in one day? (recall that one full orbit is 360 degrees.)
The moon moves around the earth by approximately 13.2 degrees per day.
This is because the moon completes one orbit around the earth every 27.3 days , and 360 degrees divided by 27.3 days gives us 13.2 degrees per day.
The Moon moves around Earth in an elliptical orbit, completing a full revolution around the planet every 27.322 days. This motion is caused by the force of gravity between Earth and the Moon, which is constantly pulling the Moon towards the Earth. As the Moon orbits, different parts of its surface are illuminated by the Sun, resulting in the Moon's changing phases that we observe from Earth. Additionally, as the Moon moves, it can pass in front of the Sun from Earth's perspective, causing a solar eclipse, or pass into the Earth's shadow, causing a lunar eclipse.
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if 5.4 j of work is needed to stretch a spring from 10 cm to 16 cm and another 9 j is needed to stretch it from 16 cm to 22 cm, what is the natural length (in cm) of the spring?
The required natural length of the spring is 0 cm.
How we get the natural length of the spring?The work done on a spring is given by the equation W = (1/2)kx^2, where W is the work done, k is the spring constant, and x is the change in length of the spring.
From the information given:we have two equations:
W1 = (1/2)k(16-10)^2 = 5.4 J
W2 = (1/2)k(22-16)^2 = 9 J
Solving for k, we can find the spring constant:
k = (2W1)/(16-10)^2 = (2 * 5.4) / (16-10)^2 = 2.7 / 36 = (2.7 / 12^2) N/m
Next, we can use the spring constant to find the natural length (the length of the spring when no force is applied) by setting x = 0 in the equation for work:
W = (1/2)kx^2 = (1/2)k * 0^2 = 0 J
So, x = (2W / k)^(1/2) = (2 * 0 / (2.7 / 12^2))^(1/2) = 0 cm
This means that the natural length of the spring is 0 cm. Note that the unit cm is not used in the calculation of the spring constant, and that the spring constant has units of N/m.
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a red car has an instantaneous acceleration of 16 m/s2 westwards while a blue car has an instantaneous acceleration of 8 m/s2 westwards. based on this information, what can be correctly stated about their motion?
The direction of the acceleration of both cars is westwards, which means that their velocity in the westward direction will increase over time.
Based on the information that a red car has an instantaneous acceleration of 16 m/s^2 westwards and
a blue car has an instantaneous acceleration of 8 m/s^2 westwards,
the following statements can be made about their motion:
The red car is accelerating at a faster rate than the blue car in the westward direction.
This means that the red car is increasing its velocity in the westward direction at a faster rate than the blue car.
The westward acceleration of the red car is double that of the blue car. This means that if both cars continue to accelerate at these rates,
the red car's velocity in the westward direction will increase at twice the rate of the blue car's velocity.
Statements are based solely on the acceleration values, and other factors such as initial velocity, distance traveled, or time elapsed could also affect the motion of the cars.
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could a material exist that has a coefficient of zero for thermal expansion? describe the requirements for such a material at an atomic level.
Yes, it is possible for a material to have a thermal expansion coefficient of zero.
The individual atoms that make up a material must expand and contract in a perfectly symmetrical manner when subjected to thermal energy in order for the material to have a coefficient of zero for thermal expansion. For the atoms to expand and contract by the same amount in response to the same amount of thermal energy, they must have precisely symmetrical bonding connections. In addition, despite the temperature fluctuation, the material's lattice structure must hold steady.
Thermal expansion: The process by which an object enlarges as its temperature rises is known as thermal expansion. It is a typical occurrence that happens in a variety of substances, including liquids, gases, ceramics, metals, and plastics. When a material's temperature rises, the molecules inside it obtain kinetic energy and begin to move farther apart, which leads to thermal expansion. The volume and size of the substance expand as a result of the wider spacing between the molecules.
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if the internal wall is now made diathermal and the system is allowed to come to equilibrium, what are the internal energies of each of the individual systems?
What will be the internal energy of each separate system if the inner wall is now rendered diathermal and the unit is allowed to reach equilibrium
Describe smart energy.
With a focus on the design, analysis, planning, and modeling of smart energy systems, Smart Power is an international, multidisciplinary publication. The magazine wants to be a powerful platform and a reliable source of knowledge on how to reform energy demand and supply systems to be more environmentally friendly.
Energy Journal: What is it?
An international, interdisciplinary journal of electrical and electronic engineering and research is called Energy. The journal aspires to be a premier venue for peer review and a reliable source of data for analyses, reviews, and evaluations of energy-related topics. The journal publishes work in mechanical research. ... Reinhard Haas Benhard Sebastian Zwickl
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what is the length of a pendulum whose period on the moon matches the period of a 1.4- m -long pendulum on the earth?
Length of a pendulum whose period on the Moon matches the period of a 1.4 m pendulum on the Earth is approximately 0.23 m.
What is period of pendulum?The time taken by the pendulum to finish one full oscillation is called time period of a simple pendulum.
The period of a pendulum is : T = 2π√(l/g), where T is period, l is length of the pendulum, and g is acceleration due to gravity. On the Moon, acceleration due to gravity is approximately 1/6 of that on the Earth, or g_moon = 1.62 m/s².
Let length of pendulum on the Moon be l_moon. Period of the pendulum on the Moon is T_moon = 2π√(l_moon/g_moon). Setting T_moon equal to the period of the 1.4 m pendulum on the Earth, T_earth = 2π√(1.4 m / 9.8 m/s²), we can find the length of the pendulum on the Moon:
T_moon = T_earth
2π√(l_moon / 1.62 m/s²) = 2π√(1.4 m / 9.8 m/s²)
Solving for l_moon, we find:
l_moon = (1.4 m) * (1.62 m/s²) / (9.8 m/s²) = 0.23 m
So the length of a pendulum whose period on the Moon matches the period of a 1.4 m pendulum on the Earth is approximately 0.23 m.
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Cities can reduce earthquake damage by
atleast 3 examples
Cities can reduce earthquake damage by identifying hazards, building safer structures, and providing education on earthquake safety.
What is earthquake?A abrupt release of energy in the Earth's lithosphere that results in seismic waves causes an earthquake, which is the shaking of the planet's surface.
Earthquakes can range in strength from those that are so small that no one can feel them to those that are powerful enough to throw things and people into the air, destroy vital infrastructure, and devastate entire cities. The number, kind, and size of earthquakes that occur in a region over a specific time period is known as its seismic activity.
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a car has wheels with a 8 inch radius. if each wheel's rate of turn is 6 revolutions per second, how fast is the car moving in units of inches/sec?
A automobile has 8 inch-radius wheels. If each wheel rotates at the rate of 6 revolutions per second, the car is moving at a speed of 301.71 inches per second.
What exactly does speed mean?the definition of speed. a direction or speed at which an object's location changes. The distance traveled relative to the time it took to travel that distance is how fast something is moving. Due to its lack of magnitude and merely having a direction, speed is indeed a scalar number.
Which of these is the first speed rule?Newton's first law states that a body will continue to move until it is acted on by an external power if it is at rest or moving in a specific direction at a fairly constant pace.
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what would be the mass of a truck if it is accelerating at a rate of 5 m/s2 and hits a parked car with a force of 14,000 n?
The mass of the truck is 2800 kg if it is accelerating at a rate of 5 m/s² and hits a parked car with a force of 14,000 N.
What does second law of Newton state?The Second Law of Newton states that the acceleration of an object is directly proportional to the net force applied to it, and inversely proportional to its mass.
Where is the concept of second law of Newton used?The Second Law of Newton is used in many areas of physics and engineering to comprehend and predict the motion of objects under the influence of forces like Aerospace engineering, Robotics, Structural engineering, Mechanics, etc.
We can the mass by using:
F = m × a
where F is for force, m is for mass, and a denotes acceleration.
m = F / a
= 14,000 N / 5 m/s²
= 2800 kg
So the mass of the truck is 2800 kg if it is accelerating at a rate of 5 m/s² and hits a parked car with a force of 14,000 N.
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true or false: equipotential surfaces of 50 v, 40 v, 30 v, 20 v and 10 v near a single, positive point charge are equally spaced in the radial direction.
The statement is true, equipotential surfaces of 50 v, 40 v, 30 v, 20 v and 10 v near a single, positive point charge are equally spaced in the radial direction.
The surface in an electric field where the value of electric potential is the same at all the points on the surface is called equipotential surface. The potential difference between two points in an equipotential surface is zero.
Thus, work done in moving the charge from one point to another in an equipotential surface is zero. since the work is done is zero when the direction of force (electric field) and displacement is normal.
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The overall global circulation of air is caused by ____ equatorial air and _____ polar air
The overall global circulation of air is caused by rising equatorial air, and sinking polar air.
What is global circulation of air?The global circulation of air can be described as the world-wide system of winds by which the necessary transport of heat from tropical to polar latitudes is accomplished.
The pattern of global circulation of air is called atmospheric circulation, and it is caused because the Sun heats the Earth more at the equator than at the poles. It's also affected by the spin of the Earth.
Thus, the overall global circulation of air is caused by rising equatorial air and sinking polar air.
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Answer:
rising
Explanation:
which stone spends more time in the air? (neglect air resistance.)view available hint(s)for part awhich stone spends more time in the air? (neglect air resistance.)the stone thrown upward spends more time in the air.the stone thrown downward spends more time in the air.both stones spend the same amount of time in the air.
Both stones spend the same amount of time in the air if air resistance is neglected. The time spent in the air is determined by the vertical motion of the stone, which is governed by the acceleration due to gravity (g).
Vertical motion refers to the movement of an object along the vertical axis, either upwards or downwards. It can be described by using the variables of height, velocity, and acceleration. Height refers to the distance between the object and the reference point, such as the ground. Velocity is the rate of change of height and acceleration is the rate of change of velocity.
Vertical motion is an important concept in physics and is widely used in various fields such as ballistics, space travel, and amusement park rides. Understanding vertical motion allows us to predict the motion of objects and make calculations related to height, velocity and acceleration.
There are different types of vertical motion such as projectile motion, where an object is thrown or fired at an angle and falls back to the ground under the influence of gravity. Another type of vertical motion is free-fall, where an object is dropped or falls vertically without any external forces acting on it.
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khaled has a red toy that is painted with a special kind of paint. when he puts the toy under a desk lamp, it stays red. when he puts the toy under an infrared lamp, it turns blue. why does the infrared light cause the toy to turn blue when the light from the desk lamp does not?
Because infrared light extracts energy from the paint whereas desk lamp light does not.
What is the best explanation of energy?Energy's "ability to accomplish labor" refers to its ability to exert a force that moves an item. Despite the vagueness of the phrase, energy actually refers to the force which moves objects. The two types of energy are energy and potential energy.
How energy is made?Nearly majority of the world's energy is produced by steam turbines using carbon fuels, nuclear energy, biofuels, thermal, etc solar thermal energy. Solar photovoltaics, wind turbines, water turbines, gas turbines, and other important electricity generation technologies.
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