A 3D object can be represented utilizing many 2D views of the object using an orthographic projection. Multiviews are another name for orthographic drawings.
What does orthographic projection mean?Three two-dimensional drawings are typically used in an orthographic projection, a standard technique for portraying three-dimensional objects. In each picture, the item is seen from parallel lines that are perpendicular to the plane of the drawing.
What are an orthographic drawing's three major views?Although a sketch can have six different sides, three perspectives are typically sufficient to create a three-dimensional object. They are called the front view, top view, and end view, respectively. These views are also known by the terms plan, elevation, and section.
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Unlike a roller coaster, the seats in a Ferris wheel swivel so that the rider is always seated upright. An 80-ft-diameter Ferris wheel rotates once every 24 s.
A. What is the apparent weight of a 90 kg passenger at the lowest point of the circle?
Express your answer with the appropriate units.
B. What is the apparent weight of a 90 kg passenger at the highest point of the circle?
Express your answer with the appropriate units.
The apparent weight of the passenger at the lowest point is 90 kg and at the highest point it changes due to the centrifugal force.
What is centrifugal force?
The centrifugal force is an apparent force that is observed in a rotating reference frame. It is the force that appears to push objects away from the center of rotation. It is not a real force, but rather a pseudo-force that is caused by the inertia of an object in motion. In other words, it is the inertia of an object that makes it appear as if there is a force pushing it away from the center of rotation.
A. At the lowest point of the circle, the rider is at the bottom of the Ferris wheel and moving at the same velocity as the wheel. Therefore, the apparent weight of the passenger is equal to the true weight, which is 90 kg.
B. At the highest point of the circle, the rider is at the top of the Ferris wheel and is moving at a slower velocity than the wheel. Therefore, the apparent weight of the passenger is less than the true weight. This effect is known as the centrifugal force. The formula for the apparent weight at the top of the Ferris wheel is:
Apparent weight = True weight x (1 - (v^2/r^2))
where v is the velocity of the Ferris wheel and r is the radius of the Ferris wheel.
In this case, the velocity of the Ferris wheel is (2πr)/T = (2π40ft)/24s = 4.71 ft/s
The radius of the Ferris wheel is 40ft
So, the apparent weight of a 90 kg passenger at the highest point of the circle is:
90 kg x (1 - (4.71^2 / 40^2)) = 90 kg x (1 - 0.12) = 90 kg x 0.88 = 79.2 kg.
Therefore, due to centrifugal force the apparent weight of the passenger at the highest point of the circle is 79.2 kg.
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Help appreciated!!!
I need two paragraphs on the difference between day and night !!! Thank you!
Answer:
day have always sun light but night is full of dark with moon light
The current through the 3 Ω resistor is A. 6 A B. 5 A C. 3 A D. 1 A 3Ω
The current through resistor of 3 ohm is currently receiving 3 A of current. It can be calculated by Ohm's Law.
It can be calculated by Ohm's Law which states that the current through a resistor is equal to the voltage across the resistor divided by the resistance. Since the resistance is given as 3 Ω, and if we assume that the voltage across the resistor is also 3 V, then the current through the resistor would be 3 A (3 V / 3 Ω = 1 A).
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two 3.8 g bullets are fired with speeds of 42.4 m/s and 62.1 m/s, respectively. a) what is the kinetic energy of the first bullet? answer in units of j.
The second one, which has more mass, will have more KE. Explanation: We are aware that KE = E=12mv2 where m Represents mass & v = movement velocity.
What does velocity vs. speed mean?As contrasted to speed, velocity describes the speed and direction of an object's motion because it travels along a path. So speed seems to be a scalar quantity, however velocity is a vector.
Why does velocity formula exist?According to the equation v = s/t, velocity (v) is a scalar quantity that quantifies displacement (or a shift in position, s), over change in time (t).
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please help I'm stuck
a 1,500 kg satellite is in orbit around Mars at a distance of 2 Mars radii above the surface.Mars's mass is 6.42 × 10^23 kg, and its radius is 3.39 × 10^6 m
Calculate the magnitude of the gravitational force acting on the satellite.
The magnitude of the gravitational force acting on the satellite is 7.43 × 10⁻¹⁷ Newton.
What is force?
The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
A spring balance can be used to calculate the Force. The Newton is the SI unit of force.
The magnitude of the gravitational force acting on the satellite = GMm/(R+ 2R)²
= (6.67 × 10⁻¹¹× 4500 × 3.39× 10⁶)/(3 × 3.39 × 10⁶)² Newton
= 7.43 × 10⁻¹⁷ Newton.
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Answer:
621 N.
Explanation:
A dolphin in 25℃ sea water emits a sound directed towards the bottom of the ocean 150m below. How much time passes before it hears an echo?
(Take speed of sound in seawater at 25℃ = 1530 m/s)
Dolphin in 25℃ sea water emits a sound directed towards the bottom of the ocean 150m below time after which dolphin hears an echo t=d/v=300/1530=0. 196=0. 20s
How is echo distance calculated?
If the fisherman's sonar device receives an echo in 0.02 seconds and the speed of sound in water is 1500 meters per second (back and forth) it can signal that there are fish 15 meters based on equation d = v*t = 1500 meters per second * 0.02 seconds = 30 meters.
What is the value of echo?
To display data on a screen both of these are necessary the changes are meager printed has a return type of 1 while echo does not and print can be used in equations.
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If an object's mass decreases while a constant force acts on it, the acceleration A. Decreases. B. Increase C. None of them D. Will be zero E. Remain the same
the resistance a body of matter provides to a change within the speed or position when a force is applied. The change a force applies produces a change that is smaller the more mass a body has. While one constant force exerts force on an object, the acceleration falls and the mass drops.
What is referred to as mass?A amount pf matter in such a particle a object is represented by its mass, which is denoted by the symbol m. Inside the International System (SI), the kilogram serves as the default unit of mass (kg).
What does mass signify in terms of physics?In physics, mass is a numerical representation of inertia, which is a basic characteristic of all matter. The resistance a body in matter offers to something like a change inside its speed or location as a result of the force that is applied is what it is in essence. The change a force applies produces a change that is smaller the more mass a body has.
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consider two particles, particle a, and particle b, that both have the same mass, but for which the speed of particle a is twice that of the speed of particle b, . what is the ratio of the kinetic energy of the two particles, ?
The ratio of the kinetic energy of the two particles is 4:1
What is kinetic energy?
A type of energy known as kinetic energy is connected to an object's motion. It is the energy that an object possesses as a result of its motion. Kinetic energy is directly related to the mass of the object and its velocity. The kinetic energy of an object is calculated by multiplying half of the mass of the object by the square of its velocity.
The formula for kinetic energy is KE = ½ mv2, where m is the mass of the object and v is the velocity of the object. Kinetic energy is a form of energy that is transferable; it can be transferred from one object to another. This can be seen when two objects collide with each other and energy is transferred from one object to the other.
The Kinetic energy = 1/2m v²
Given Mass is same, so we get rid of mass
v₁² ∝ v₂²
(2a)² ∝ (a)²
4a² ∝ a²
4:1
Thus, the ratio of the kinetic energy of the two particles is 4:1.
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a 1.02 nf parallel-plate capacitor is charged to an initial potential difference of 60 v and then isolated. the dielectric material between the plates has a dielectric constant of 4.8. how much work is required to withdraw the dielectric sheet? answer in units of j.
Energy change for the system = 5.0 10 5 J - 1.0 10 5 J = 4.0 10 5 J
The system's energy changed by the work done required to remove the mica sheet is 4.0 105 J.
What systemic work is being done?
In terms of physics, work is defined as being done on a system when a force is applied and the system suffers a displacement.
What is the system's work in thermodynamics?
Actions like compression, which also include shaft work, churning, and rubbing, are performed on a thermodynamic system by objects or systems nearby. Such compression-based work is characterized here as thermodynamic work.
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a model ship is built to a scale of 1 cm: 4 m. the length of the model is 40 cm. what is the length of the actual ship? a. 160 m c. 40 m b. 50 m d. 15
The length of actual ship, in accordance with the scale provided, is 160 meters, as stated in the question.
What is the length of length?Using measuring instruments like a yardstick, measuring tape, etc., one may determine the size of any item. A ruler can be used to estimate, for instance, how many centimeters a pencil is long. A foot scale can be utilized to gauge the height of each student in a class.
How big and thick are they?The distance between an object's sides is its length. The greatest dimension is this one. The width of an entity is the gap between its two sides. The smallest dimension is this one.
Length of scale = 4m
Length of model = 40cm
Length of actual ship = 400cm*40cm
= 160m
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Karla, Matthew, Daneisha, Vince, and Sergio all have carts of different masses. In their lab, they each
apply a different amount of force to the carts, resulting in different accelerations. However, they did
not label their data table and are now trying to backtrack and identify all of their data.
Your task: using the clues below and your understanding of Newton's 2nd Law of Motion, help
each student determine the mass of their cart, the acceleration of their cart, and the force
they each gave to their cart.
What the students know: the carts had masses of 6kg, 4.5 kg, 9kg, 10 kg, and 12 kg and accelerations
of 5 m/s², 3 m/s², 2 m/s², 4 m/s², and 2.5 m/s².
Clues:
1. Karla's cart is half the mass of Daneisha's.
2. Vince's cart's mass is neither the smallest nor the largest.
3. The mass of Sergio's cart is greater than Vince's.
4. Daneisha's acceleration was half of Sergio's
5. The force Vince applied to his cart was larger than Matthew's.
6. Matthew's acceleration was greater than Vince's.
7. Karla applied less than 18 N of force.
8. Sergio applied more than 40 N of force.
9. Daneisha's force was greater than 27 N.
10. Vince's acceleration was greater than Daneisha's.
11. Karla had less acceleration than Vince.
12. Karla applies the least amount of force.
13. Vince's cart had twice the mass of Matthew's.
The mass of Karla's cart by Newton's second law on applying force will be 12 kg.
What does Newton's second law mean?A detailed explanation of how a force can alter a body's motion is given by Newton's second law. According to this, a body's momentum changes at a rate that is equal to the force acting on it over time in both magnitude and direction.
We know that according to Newton's second law force=mass×acceleration
Now the force needed to push Danielle's cart is 15N.
So, Danielle's car mass is-
In light of the fact that Karla's cart is twice as heavy as Danielle's, Karla's cart's mass can be calculated by multiplying 6 by 2.
So, the mass of Karla's cart is =2×6=12kg.
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Which of these statements about a wave's amplitude is true?
O Higher amplitude indicates higher energy.
Higher amplitude requires higher frequency.
Higher amplitude can change a mechanical wave into an electromagnetic wave.
Higher amplitude reduces a wave's reflection and refraction.
Higher amplitude indicates higher energy. these statements about a wave's amplitude is true.
what is energy ?
Energy is the ability to do work. It is a fundamental concept in physics and is defined as the ability to do work or produce heat. Energy is the capacity to cause change and can be stored in a variety of forms such as kinetic, potential, thermal, electrical, mechanical, and chemical.
Kinetic energy is the energy of motion; potential energy is the energy stored in an object due to its position; thermal energy is the energy related to the temperature of an object; electrical energy is the energy related to the movement of electrons; mechanical energy is the energy related to the motion of an object; and chemical energy is the energy stored in the bonds of atoms and molecules. Energy can be converted from one form to another, and although energy can never be created or destroyed, it can be transferred from one system to another.
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when in a raceway with not more than three current-carrying conductors, how many amperes can a 10 awg thw carry continuously?
30A current can a 10 awg thw carry continuously.
How many conductors that can transport electricity can you fit in a conduit?The NEC mandates that you derate the conductor's capacity for any number of conductors beyond three, even though it permits up to 16 current-carrying THHN conductors in such a conduit. The derating is not substantial until there are more than nine conductors.
When more than three current-carrying conductors are installed in one raceway their ampacities must be reduced according to NEC?When installing more than three current-carrying conductors in a single raceway, cable, or covered ditch, the ampacity of each conductor must be decreased in accordance with the relevant adjustment factor.
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To keep your vehicle from rolling into the street when parking downhill on the right with a curb, set the parking brake after
Answer:
Below
Explanation:
....after turning the wheels to face into the curb
you are at the bank of a still river that is 100 m wide. a friend is standing on the opposite side of the river 300 m directly north of the point directly across from where you are. you plan to swim across the river then run along the opposite bank. if you can swim 3 meters per second and run 5 meters per second, then to what point should you swim to minimize your time?
To minimize your time to reach your friend, you should swim to the point directly across from your current position and then run along the opposite bank.
This is because the time you would take to swim to any other point along the opposite bank would be the same (100m / 3m/s = 33.33s) but the distance you would run would be different, and thus the time running would be different.
The time taken to run along the opposite bank is 300m / 5m/s = 60s. So the total time taken to reach your friend would be 33.33s + 60s = 93.33s.
This is the fastest way to reach your friend since you are taking the shortest path which is directly across the river and running along the opposite bank.
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The potential energy of a box on a shelf, relative to the floor, is a measure of a. the work done putting the box on the shelf from the floor. b. the weight of the box times the distance above the floor. c. the energy the box has, because of its position above the floor. d. any of these
the energy the box has, because of its position above the floor. d. any of these
Any of these. The potential energy of a box on a shelf, relative to the floor, is the energy the box has because of its position above the floor.
What is potential energy?Potential energy is a type of energy stored in an object due to its relative position or condition. This energy is the result of forces acting on an object, such as gravity, tension, and compression. The object has the potential to do work, as it can be converted into kinetic energy. Potential energy can be stored in a variety of forms, such as chemical, mechanical, electrical, and gravitational. The amount of potential energy an object has is determined by its position, configuration, or condition.
This energy is determined by the work done putting the box on the shelf from the floor, as well as the weight of the box times the distance above the floor.
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you take a 2.1 kg box and pull it with a rope to slide it horizontally across the ground. you pull the rope with a 18.4 n force at an angle of 29 degrees with the horizontal. if you slide the box 1.1 m, how much work did your pulling force do on the box?
For lift a 3.00-kg weighted object, a force od 20.8 N is exerted perpendicular to the inclination. Using the work-energy theorem, one can the initial kinetic energy.
A force is what?The meaning of the term "force" is obvious. This kind of force can be described as only a push or a pull, which is perfectly okay. A force does not "exist in" or "contain" an object. A force from the other can exert pressure on something. The concept of the a force fails to distinguish between living creatures and inanimate objects.
Where do forces come from?The interactions of two (or more) things result in forces. Each applies an equal but opposing power to the other. The object is propelled by external forces. The object's general motion is unaffected by an interior force.
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As the temperature of a metallic conductor increases its resistance usually
Answer :
[tex] Hence \ resistance \ increases \ with \\ increase \ in \ the \ temperature. [/tex]
When a person blacks out, their hippocampus is unable to:
answer choices
a. record new memories
b. control muscular movement
c. keep them from making embarrassing decisions
d. regulate their blood pressure
When a person blacks out, their hippocampus is unable to record new memories.
In a region of the brain known as the hippocampus, our brain retains a short-term memory of the experience. Later, the memories are consolidated, or moved to a different region of the brain, where they will be stored for a longer period of time.
Alzheimer's disease normally starts by destroying neurons and the connections between them in the cortex and hippocampus, two regions of the brain essential in memory.
Later, it has an impact on the parts of the cerebral cortex that control language, thought, and social interaction. The majority of short-term memory is kept in the frontal lobe of the cerebral cortex.
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if the bob's mass is doubled, approximately what will the pendulum's new period be?
The pendulum's new time period is T.
A simple pendulum is made composed of a bob dangling at the end of a string that is so light that it is thought to be massless. As an illustration of a conservative oscillatory system, it is used. This idealized pendulum is made up of a point mass m fixed to one end of a massless rod of length L.
The formula for calculating a basic pendulum's
T= 2π√(L/g)
time period takes into account its length, acceleration from gravity, and time period (T). The time period is unaffected by changes in the bob's mass because this formula is mass-independent. As a result, T will continue to be the new time period. Nothing has changed.
Your question is incomplete but most probably your full question was
A simple pendulum consisting of a bob of mass m attached to a string of length L swings with a period T. If the bob's mass is doubled, approximately what will the pendulum's new period be?
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during any process, the net electric charge of an isolated system does not change.T/F
Yes ,the net electric charge of an isolated system does not change.
A quality of matter known as a charge causes it to produce and experience electrical and magnetic phenomena. The fundamental tenet of charge conservation is that the system's overall charge is conserved.
As we all know, a system is a collection of things, and the interactions between charges and energy and momentum are comparable. However, this conservation rule makes more sense because an object's net charge depends on the quantity of electrons and protons present. Protons and electrons cannot suddenly arrive or vanish, and the overall charge must remain constant. This explains why a body always contains the same number of protons and electrons.
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According to Table 1, which of the following materials is the poorest electrical conductor? O Brass O Copper O Nichrome O Aluminum
Nichrome materials is the poorest electrical conductor
The electrical conductivity of Nichrome is the least. Therefore Nichrome is the poorest electrical conductor.
An item or category of material known as a conductor allows for the flow of charge (electric current) in one or more directions. Both physics and electrical engineering utilize this phrase. Electrical conductors are usually made of metal-based materials. Electric current is a flow of positively charged holes, negatively charged electrons, and occasionally positive or negative ions.
It is not essential for one charged particle to move from the component creating the current (the current source) to those consuming it for current to flow within a closed electrical circuit (the loads).
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If sound a has a frequency of 450 hz and sound b has a frequency of 447 hz, how many beats will you hear when both are played together?.
If sound a has a frequency of 450 Hz and sound b has a frequency of 447 Hz, when both are played together, we hear 3 beats per second.
The frequency of a sound wave is the quantity of vibrations created by a medium particle in one second. It is given in hertz (Hz), an internationally recognised unit of measurement.
The number of times per second that a sound pressure wave repeats itself is known as frequency, often known as pitch.
The frequency of a sound wave is the quantity of vibrations created by a medium particle in one second.
The frequency of sound A is 450 Hz and frequency of sound B is 447 Hz.
If both the beats are played together, the frequency of sound wave is 450 Hz - 447 Hz = 3 Hz. Therefore, an individual will hear 3 beats per second.
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Can anyone help please
The combined resistance of the circuit is 300 ohms and the current in the circuit is 0.01A.
What do you mean by circuit?A closed loop in which electrons can move called a circuit. Electricity is supplied to the circuit by an electricity source, such as a battery. No electrons will move till the circuit is finished, that is, it goes full circle back to the electrical source.
The combined resistance of the circuit can be calculated by adding the individual resistances in series: 100 ohms + 200 ohms = 300 ohms.
To calculate the current in the circuit, you can use Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R):
I = V / R
In this case, the voltage is 3.0 V, and the resistance is 300 ohms.
So, I = 3.0 V / 300 ohms = 0.01 A or 10mA.
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Determine the time needed to pull the cord at B down 4 ft starting from rest when a force of 10 lb is applied to the cord. Block A weighs 20 lb. Neglect the mass of the pulleys and cords.
The time needed o pull the cord at B down 4 ft starting from rest is 0.249s .
What does a pulley's tension mean?At its two ends, tension is the pulling force applied to the object attached to its ends by the ropes at its ends. Tension is the pulling force put on the rope (or string, cable, or chain) on one side of the point by the rope on the other.
2Ta - Wa = ma a1
40-20 = 20 a1
a1 = 32.2 ft/s^2
a2 = -4 x 32.2
=> 128.8 ft /s^2.
s=ut + 1/2 a t^2;
u=0;
4= 0+ 1/2 x 128.8 x t^2
=> time t= 0.249 sec.
What is tension, exactly?The force imparted through a rope, string, or wire when both opposing forces strain on it is described as tension. The tension force draws energy proportionately on the objects at the ends and is applied along the entire length of the wire. Every physical object in contact with another one applies some force to that object.
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suppose that during the launch of a rocket from the surface of the earth, an astronaut onboard the rocket stands on a bathroom scale and measures her weight to be 5.2 times her normal weight. determine the acceleration of the rocket.
Her apparent weight W' = 22.54 m/s2 is 5.2 times what she normally weighs. to ascertain the rocket's acceleration.
What does acceleration mean in layman's terms?The pace at which speed changes is known as acceleration.So because direction of an object's velocity is shifting even while it follows a circular course, it continues to accelerate.
Describe the acceleration formula.According to the formula a = v/t, kinetic energy (a) is the product of the shift in velocity (v) and the time shift (t). In terms of meters per minute squared (m/s2) this enables you to calculate how quickly velocity varies.
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You weigh 650 N.
What would you weigh if the Earth were
five times as massive as it is and its radius
were five times its present value?
Answer in units of N.
Your new weight on Earth would be 130 N.
What is the measure of your weight?
The weight of a body is the measure of the force of gravity on the object or body.
Mathematically, the formula for the weight of a body is given as;
W = mg
where;
m is the mass of the object or bodyg is acceleration due to gravityThe formula for acceleration due to gravity is obtained by combining Newton's second law of motion and Newton's law of universal gravitation.
F = mg = GmM / R²
g = GM/R²
where;
M is mass of EarthR is radius of EarthAssuming the the Earth were five times as massive as it is and its radius
were five times its present value, the new acceleration due to gravity is calculated as;
g' = (G x 5M ) / ( 5R )²
g' = ( 5 / 25 ) (GM/R²)
g' = 1/5 g
So the new acceleration due to gravity will reduce by 1/5, hence the new weight will equally reduce by 1/5.
new weight = 1/5 x 650 N
new weight = 130 N
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a bar magnet is falling vertically through a horizontal loop of wire with the south magnetic pole entering the loop first. what is the direction of the induced current (viewed from above) as the south pole enters the loop? group of answer choices clockwise counterclockwise zero
The direction of the induced current as the south pole enters the loop is clockwise direction.
Induced current - what is it?If a conducting loop is subjected to a fluctuating magnetic field, a current can be induced in the loop. If a conducting loop is subjected to a fluctuating magnetic field, a current can be induced in the loop.
What are EMF and induced current?Current is the flow of electrons via a conductor in a closed circuit, whereas induced EMF is the change in potential difference brought on by a change in a coil's magnetic flux.
How can you tell which way an induced current is flowing?If the thumb and forefinger are pointing in the directions of the conductor's velocity and magnetic field, respectively, the center finger will point in the direction of induced current in the conductor.
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5.what is one thing scientists can learn from studying the paleomagnetism on the ocean floor? * 1 point the cause of the magnetic pole reversals the exact location of the next earthquake the speed of the plates moving away from each other when the next magnetic reversal will take place
We can find out more about the Earth's innards, this geodynamo, or even follow the movements of the continents over time (plate tectonics), as well as the age of rocks and where they developed.
Describe the dynamo.A dynamo is a type of electric generator that uses a commutator to produce a conducting current. A dynamo produces an electric current or power from of the rotating of the coil by using the electromagnetic rules.
What purpose does a dynamo serve?The dynamo's job is to convert mechanical energy into electrical energy. The dynamo's control gear adjusts the current output based on the demands placed on the electrical system and the battery's condition.
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A football with line a pointing straight down from it, line b going straight ahead from it, and line c curving downward from it. which arrow, a, b, or c, depicts the force of gravity on the thrown football?
Line C. Gravity is a force that pulls objects towards the Earth's surface. The curved line depicts this force, so it is the arrow that depicts the force of gravity on the thrown football.
What is force?Force is the action of one body or object on another that causes it to move, stop, or change direction. It is a vector quantity, meaning it has both magnitude and direction. Forces can be exerted on objects by other objects, or they can be self-generated, such as through the action of gravity. Examples of forces include the force of a hammer striking a nail, the force of gravity on an object, the force of air on an airplane, and the force of friction between two surfaces. Force can also be used to describe energy, such as the force of a chemical reaction, or the force of a magnetic field.
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