The force of gravity is the only force acting upon their body. The astronauts are in free-fall.
If the astronaut is formed of the same amount of material as before, the mass will always be the same.
So, when asked what the astronauts' mass is on the space station, we can respond it's still 65 kg. Because there is no gravity in space, astronauts float around.
Everyone understands that the gravitational force decreases with distance from Earth. Astronauts are so far away from Earth that gravity is negligible. This is why NASA refers to it as microgravity.
Mass is the same whether measured on Earth or on the International Space Station. Weight can vary based on gravitational pull, such as on the Moon, where weight is one-sixth that of Earth.
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prior to the discovery of atmospheric pressure, the failure of wine to pour from the bottom of a barrel unless an opening was made in the top was explained by:
Horror vacui or Nature abhors a vacuum is the principle that explain the inability of wine to pour from the bottom of a barrel without a top opening.
What is Horror vacui ?In physics, horror vacui, or plenism, is a postulate attributed to Aristotle. He articulated a notion, later questioned by the atomism of Epicurus and Lucretius, that nature contains no vacuums since the denser surrounding material continuum would fill the rarity of an incipient void right away.
He also argued against the void in a more abstract sense, saying, for instance, that since a void is nothing by definition, it cannot be said to exist. This is in line with Plato. Furthermore, because it wouldn't have any features, it couldn't be perceived by the senses and its supposition wouldn't be able to add to the explanation.
Thomas Hobbes, Robert Boyle, and others debated the theory in the context of fluid mechanics in the 17th century. Sir Isaac Newton and Gottfried Leibniz continued the discussion in the early 18th century.
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the 3.0-m-long, 100 kg rigid beam of figure ex12.31 is supported at each end. an 80 kg student stands 2.0 m from support 1. how much upward force does each support exert on the beam?
The amount of upward force each support exert on the beam is 751.33 N and 1012.67 N.
What is force?Force can be defined as the product of mass and acceleration of a body.
To calculate the upward force exerted by the beam, we apply the principle of moment.
From the diagram attached,
Taking our moment about N₂,
Mgd₁+mgd₂ = N₂L............ Equation 1Where:
M = Mass of the beam d₁ = mid point of the beamm = Mass of the studentd₂ = Distance of the student from N₂N₂ = Supporrt 2L = Length of the beamg = Acceleration due to gravity.From the question,
M = 100 kgm = 80 kgd₁ = 1.5 md₂ = 1 mL = 3 mg = 9.8 m/s²Substitute these values into equation 1 and solve for N₂
N₂×3 = (100×9.8×1.5)+(80×1×9.8)3N₂ = 1470+7843N₂ = 2254N₂ = 2254/3 N₂ = 751.33 NTo calculate the First support N₁, we use the formula below.
N₁ + N₂ = mg+MgN₁ = mg+Mg-N₂N₁ = (80×9.8)+(100×9.8)-751.33N₁ = 1764-751.33N₁ = 1012.67 NHence, the upward force from each support is 751.33 N and 1012.67 N respectively.
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what type of cloud that has a thin wispy appearance, consists of ice crystals, and often precedes a warm front?
Cirrus clouds .Since they are made completely of ice crystals descending through the atmosphere, they are wispy.
What weather do cirrus clouds bring?Cirrus clouds are thrown across the sky in strong winds and are thin, wispy clouds.Fair weather may be indicated by a few cirrus clouds, but expanding cover indicates a shift in the weather (an approaching warm front) will take place within the next 24 hours.Being entirely made of ice crystals that have fallen through the atmosphere, they are wispy; if blown horizontally by winds, they take on a distinctive hooked appearance.Prior to a warm front, where the air masses collide at high altitudes, cirrus clouds appear, frequently signaling an impending weather changeCirrus clouds won't affect you if you're flying under visual flight rules because they'll be high above you. Cirrus clouds, which resemble long, thin, wispy white streamers high in the sky, are comprised of ice crystals.Due to their resemblance to a horse's tail, they are frequently referred to as "mare's tails."To learn more about cirrus clouds refer
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into how many possible components can a single force be resolved? a) three components b) an unlimited number c) four components at right angles to each other d) two components\
A single force is resolved by An unlimited number. Option B.
This single force can be decomposed into two components, upward and to the right. Each component represents the influence of this chain in the specified direction. Any force can be decomposed into individual partial forces, just as individual partial forces can be put together.
The force can be decomposed graphically or by trigonometry into two force components. Each set of forces on an object can be replaced by a single force and a single acting pair that is statically equivalent to the original set of forces and moments. This set of equivalent forces and pairs is called an equivalent force pair system.
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A soccer ball rests on the ground in a stationary position. Which of the following best describes the forces acting on the ball? (1 point)
Responses
unequal forces
unbalanced forces
accelerating forces
balanced forces
male lions and human sprinters can both accelerate at about 10.0 m/s2. if a typical lion weighs 170 kg and a typical sprinter weighs 75 kg, what is the difference in the force exerted by the ground during a race between these two species? (both the forward and normal forces should be calculated.)
The difference in the force exerted by the ground during a race between these two species is 259.25
What is force?Forces are influences that can change the movement of an object. A force can change the velocity of an object with mass, i.e. accelerate it. Forces can also be described intuitively by pushing or pulling. A force has both magnitude and direction and is a vector quantity.
Force exerted by the lion:
Normal force = mg
170 = m × 9.8
m = 17.34 kg
Forward force = ma
= 17.34 × 10.0
= 173.4 N
Total force = Normal force + Forward force
Total force = 170 + 173.4
= 343.4 N
Force exerted by the man:
Normal force = mg
75 = m × 9.8
m = 7.65 kg
Forward force = ma
= 7.65 × 10.0
= 76.5 N
Total force = Normal force + Forward force
Total force = 7.65 + 76.5
= 84.15 N
The difference in the forces exerted by these species is:
343.4 N - 76.5 N = 259.25 N
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A cosmic catastrophe jolts earth so that its axis is perpendicular to the orbital plane between earth and the sun. The largest effect of this change would be?.
A cosmic catastrophe jolts earth so that its axis is perpendicular to the orbital plane between earth and the sun therefore the largest effect of this change would be the elimination of seasonal variation.
What is Season?This is referred to as the period of the year that is distinguished by special climate conditions and examples include winter, summer etc.
In a situation where a cosmic catastrophe results in it being perpendicular to the orbital plane between earth and the sun there will be no seasonal variation as a result of it hindering the effect of the sun and other factors.
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heat generated by cars, factories, furnaces, lights, air conditioners, and heat-absorbing dark roofs and streets help create what is known as a(n) in the central city.
The heat generated by cars, factories, furnaces, lights, air conditioners, and heat-absorbing dark roofs and streets helps create an urban heat island in the central city.
An urban heat island arises while cities update the herbal land cowl with dense concentrations of pavement, homes, and other surfaces that soak up and keep the warmth. This effect increases power costs (e.g., for aircon), air pollutants stages, and warmth-related illness and mortality.
Heat islands form as plants are replaced by asphalt and urban for roads, homes, and other systems necessary to deal with growing populations. those surfaces soak up—rather than replicate—the sun's warmth, causing floor temperatures and basic ambient temperatures to rise.
An urban heat island happens when a city experiences much warmer temperatures than close rural areas. The difference in temperature between urban and less-evolved rural regions has to do with how properly the surfaces in each surrounding absorb and keep warm.
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if a cannonball were fired horizontally from a cannon atop a very high mountain what would its trajectory look like
The trajectory of the cannonball will be in parabolic motion.
A trajectory is an object that only gravity acts on. The downward force, gravity, accelerates the projectile downward. The vertical components of motion are independent of each other, so gravity does not change the object's horizontal velocity. A vertical force does not cause horizontal movement. A vertical force acting on a horizontally moving object causes the object to deviate from its linear trajectory.
When an object moving forward is affected by gravity, it falls in a parabolic arc. Since the projectile is an object affected only by gravity, the projectile's path forward from the initial thrust momentum is parabolic.
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What did galileo galilei and isaac newton believe about theories of the natural world?.
Galileo Galilei and Isaac Newton disputed the Aristotelian view that the sun should be at the center of the cosmos and believed that the earth was the center of the universe which is about theories of the natural world.
Unlike the Aristotelians, who believed in observation to look for natural circumstances, their view of nature was founded on experimental results. The basic means of communication with the world in the Aristotelian scientific tradition was observation and the pursuit of "natural" conditions. Galileo investigated earthly motion laws and established the principles of gravity.
First, Newton firmly established the laws of motion and connected them to Kepler's equations of planetary motion. Until Newton, there was no clear link between celestial body motion and earthly physics.
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what does power mean in terms of electrical energy
Answer:
Electricity is the rate at which electrical energy is converted into motion, heat, or other forms such as electromagnetic fields.
Describe what is happening to the pressure and volume of the gas in the two diagrams below, assuming that the temperature of the gas does not change.
The pressure is increasing and accordingly the volume of the gas is decreasing when the temperature of the gas does not changes.
Continuous physical force acting on an object is termed as pressure.
Space occupied by any substance is termed as its volume.
As we know pressure and volume are inversely proportional to each other, this means that if the temperature and amount of any gas in a container is kept constant then the increase in pressure of the gas will cause decrease in the volume of the same gas in the container.
Pressure (P) ∝ [tex]\frac{1}{Volume (V)}[/tex]
When sign of proportionality '∝' is removed constant 'k' is added to the equation
i.e. P = [tex]\frac{k}{V}[/tex]
PV = k
So the given picture clearly depicts that the piston is creating pressure on the gas hence the pressure of the gas is increasing and therefore the volume of the gas is decreasing.
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a. When rock on Earth's surface is broken into
smaller pieces, forming loose material
When rock on Earth's surface is broken into smaller pieces, forming loose material is called Weathering.
Physical weathering and chemical weathering are the two basic types of weathering. On this page, we discuss mechanical weathering (and more).
Rocks naturally fracture at a number of different levels. The borders between mineral grains can be a source of weakness in the rock. Sedimentary rocks are frequently stratified, and the layers are occasionally not tightly bonded together. As larger, more massive rocks are exposed by erosion, joints (cracks with no relative motion across them, merely spreading) may form in the rocks. These rock fissures become wider due to physical deterioration. Of course, biological weathering refers to weathering caused by living creatures.
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naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 138 n, causing an acceleration of 2 m/s2, what is naoki's mass? a. 71 kg b. 20 kg c. 59 kg d. 69 kg
The correct answer is 59 kg
Given-
Mass of bicycle = 10 kg
F = 138 N
a = 2 m/s²
The mass of any body can be calculated by the force and acceleration of that body. We can use the formula as-
Calculation:
F = ma
m = F/a
= 138/2
= 69 kg
m = mass of bicycle + Naoki's mass. Then
69 = 10 + Naoki's mass
Naoki's mass = 69 - 10 = 59
Naoki's mass = 59 kg
Therefore, the mass of Naoki that sits on the bicycle and is pedalling is 59 kg.
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A golfer strikes a golf ball at a 35 degree angle with a vertical velocity of 25 m/s. what is the initial resultant velocity of the golf ball the moment it becomes airborn?
The resultant velocity of the golf ball would be 30.525m/s.
Velocity is a vector quantity so we can deduce velocity components in two form
V = VcosФ + VsinФ
the vertical component is nothing but VcosФ , because it makes 35 degree angle with vertical velocity and the horizontal component is VsinФ.
So according to the question, we can write
25m/s = VcosФ
25m/s = Vcos35
Since cos35 = 0.819, so putting the appropriate values, we get
V = 25/0.819
V = 30.525 m/s
Hence the resultant velocity of the golf ball would be 30.525 m/s.
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A wave has a speed of 150 m/s
and a frequency of 10 Hz. What is
the wavelength of this wave?
Answer:
Speed = frequency * wavelength
150m/s = 10Hz* wavelength
10Hz. 10Hz
Wavelength = 15m
a magnetic field is used to suspend a wire of mass 0.05 kg and length 0.18 m . the wire is carrying a current of 13 a . what minimum magnetic-field magnitude is needed to balance the pull of gravity?
0.209T minimum magnetic-field magnitude is needed to balance the pull of gravity.
The weight of the mass suspended is equal the force produced by the current carrying conductor in the magnetic field and this is the force needed to balance the pull of gravity
Fm = mg = BIL................................... Equation 1
Make B the subject of the equation
B = mg/IL.................................. Equation 2
Where B = magnetic Field, m = mass, g = acceleration due to gravity, I = Current, L = Length of the wire.
Given: m = 0.05 kg, I = 13 A, L = 0.18 m,
Constant: g = 9.8 m/s²
Substitute into equation 2
B = (0.05×9.8)/(13×0.18)
B = 0.49/2.34
B = 0.209T
What is magnetic field?The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field.
In the vicinity of a magnet, an electric current, or a shifting electric field, there is a vector field called a magnetic field where magnetic forces can be seen. Electric charges in motion and the intrinsic magnetic moments of elementary particles connected to the fundamental quantum characteristic known as spin create a magnetic field. As parts of the electromagnetic force, one of the four fundamental forces of nature, magnetic field and electric field are interdependent.
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a croquet mallet delivers an impulse of 9.97 n s to a 0.34- kg croquet ball initially at rest. what is the speed of the ball immediately after being struck?
The speed of the ball immediately after being struck is 28.65 m/s.
Impulse is equal to momentum change when a collision happens and no external forces on the system.
I = Δp
I = p' - p
I = mv - mu
u = initial speed (m/s)m = mass of the object (kg)v = final speed (m/s)I = impulse (Ns)p = initial momentum (Ns)p' = final momentum (Ns)Parameter
I = 9.97 Nsm = 0.34 kgu = 0 m/sI = mv - mu
9.97 = 0.34v - (0.34×0)
9.97 = 0.34v
[tex]v = \frac{9.97}{0.34}[/tex]
v = 28.65 m/s
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what is the momentum of tectonic plate if its kinetic energy is zero?
Answer: It is zero
Explanation: Without kinetic energy a plate cannot move. It is impossible.
PLEASE HELP!!!!
Which story matches the graph?
(1 point)
The elevator moves up, is stationary for a while, then moves down at a faster rate.
The elevator moves up, stays at ground level, then moves down at a faster rate.
The elevator moves up, stays at ground level, then moves down at a slower rate.
The elevator moves up, is stationary for a while, then moves down at a slower rate.
The story that fits the graph is; he elevator moves up, is stationary for a while, then moves down at a slower rate.
What is a position time graph?
The term position time graph shows us how the position of the object is changing with time. The position in this case has to do with the exact point in space where the object can be found. We have here an elevator that could be found at various points.
We now have to turn to the graph and see how the graph can be able to give a description of the motion of the elevator. If we look at the position time graph, it tends to move up and then remain at a point for some time before it moves down.
Based on the analysis that we have made above, we can now look out for any of the stories that fits the description that we have just made here.
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what is the initial current? (b) what is the rc time constant? (c) what is the current after one time constant? (d) what is the voltage on the capacitor after one time constant?
(a) Initially, the capacitor acts just like a wire:
I = V/R
=6.16/480
= 0.01283 A
= 12.83 mA
(b) Time constant = R*C
= (480) * (1.5*10^-6)
= 7.2*10^-4 s
(c) The voltage across R = Total voltage - voltage across c
= 6.16 - 3.89
= 2.27 V
(d) Voltage across R/R
= 2.27 / 480
= 4.73*10^-3 A
= 4.73 mA
Answer: 4.73 mA
A resistor-capacitor circuit is an electrical circuit consisting of passive components such as resistors and capacitors driven by a current or voltage source. Capacitors store energy and resistors in the circuit control the rate of charging or discharging. The frequency variation of RC/IC circuits is defined as the frequency of the signal flowing through the circuit. Also called natural frequency. An RC circuit is a circuit in which a resistor and a capacitor are connected in series.
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If the force on a cart is doubled, what happens to the acceleration of the cart?.
Answer:
It will be doubled
Explanation:
F = ma
Let's consider m = 1 (the mass of the cart is not changing so it is constant),
F = 2, and a = 4.
2 = 1 x 4
When doubling force we need to maintain equality so acceleration should double too. To understand it better find the ratio of force and acceleration 2/4 = 1/2. The ratio of force to acceleration should always equal half in all scenarios, this way we can see how equality is maintained.
2x2 = 1 x (4x2)
4 = 1 x 8, and the ratio of force to acceleration is 4/8 = 1/2.
two different capacitors, both charged to 1.5v by the battery, which will cause the light to stay lit longer, the one with the larger or smaller capacitance? explain what you did and observed to answer this question.
The capacitor with a larger capacitance will allow the bulb to remain lit for a longer period of time as compared to the capacitor with a smaller capacitance. We first created the largest capacitance by decreasing the separation and increasing the area and connected it to 1.5 V.
We then disconnected it and connected it to the bulb and observed how it was glowing. Then we obtained the lowest capacitance by increasing the separation and decreasing the area and again connected it to 1.5 V. Again, we disconnected it and connected it to the bulb and observed how it was glowing.
If you place a capacitor in a circuit containing a light bulb and a battery it will first charge the capacitor, and during that charge a non-zero current will flow through the circuit, lighting the light bulb. Capacitors can carry more current as the frequency of the supply voltage increases. As we have seen, alternating current can flow through a circuit with capacitance. The apparent resistance of a capacitor in an AC circuit is less than its DC resistance.
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a ball is shot from the ground straight up into the air with initial velocity of 41 ft/sec. assuming that the air resistance can be ignored, how high does it go?
A ball is shot from the ground straight up into the air with initial velocity of 41 ft/sec. It takes 1.28 sec to reach its its maximum height of 26.27feet.
a ball is shot straight up into the air with initial velocity of 41ft/sec
S = [tex]S_{0} +V_{t} - 16t^{2}[/tex]
height [tex]S_{0} = 0[/tex]
velocity [tex]V_{0}[/tex] = 41ft/sec
S= 0+41t- 16[tex]t^{2}[/tex]
S = 41t -16[tex]t^{2}[/tex]
instantaneous velocity v
V = ds/dt = [tex]V_{0}[/tex]- 32t
V = 41-32t
32t = 41
t = 41/32 = 1.28 sec.
S = 41t-16[tex]t^{2}[/tex]
= 41 ( 1.28)- 16 [tex](1.28)^{2}[/tex]
= 52.48 - 26.21
= 26.27
What is velocity?The pace at which an object's position changes in relation to a frame of reference and time is what is meant by velocity. Although it may appear sophisticated, velocity is just the act of moving quickly in one direction. Since it is a vector quantity, the definition of velocity requires both magnitude (speed) and direction. Its SI equivalent is the meter per second (ms-1). A body is considered to be accelerating if the magnitude or direction of its velocity changes.
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james bond is trying to jump from a helicopter into a speeding corvette to capture the bad guy. the car is going 30.0 m/s and the helicopter is flying completely horizontally at 100.0 m/s. the helicopter is 120 m above the car and 440 m behind the car. how long must james bond wait before jumping in order to safely make it into the car? use 3 sf
James Bond should must wait for 6.82 second before jumping in order to safely make it into the car.
The speed of the car of the bad guy is 30m/s.
The speed of the helicopter of James Bond flying is 100m/s. Helicopter is flying at a height of 120m and it is behind 440m of the car.
The speed of the helicopter relative to the car is 70m/s.
So, with the speed James Bond has to jump into the car which is at a depth of 120m and at horizontal distance of 440m.
Assuming that James bond jump directly vertically down into the car.
We can write,
Time taken by the helicopter to cover the distance of 440 meters.
Time = distance/relative speed
Time = 440/70
Time = 6.82 seconds.
So, James Bond should wait for 6.82 seconds.
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two cars collide inelastically and stick together after the collision. before the collision, the magnitudes of their momenta are p1 and p2 . after the collision, what is the magnitude of their combined momentum?
the magnitude of their combined momentum is p=p1+p2
In Newtonian mechanics, an object's mass and velocity are combined to create momentum, more precisely linear momentum or translational momentum. It is a vector quantity with a magnitude and a direction. When an object's mass (m) and velocity (v), which is also a vector quantity, are known, the result is the object's momentum.
The kilogram meter per second (kg m/s), which is equated to the newton-second in the International System of Units (SI), is the unit used to measure momentum.
According to Newton second law of motion, a body's rate of momentum change is equal to the net force acting on it. While momentum varies depending on the frame of reference, it is a conserved quantity in every inertial frame.
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A 65-kg diver jumps off a 9.7-m tower.
(a) Find the diver's velocity when he hits the water.
____m/s
(b) The diver comes to a stop 2.0 m below the surface. Find the net force exerted on the diver while in the water.
______N
(a) The diver's velocity when he hits the water is 13.795 m/s.
(b) The diver's net force while in the water was -3092.7N.
Newton's second law states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration an of its center of mass, F = ma.
The three equations of motion are: v = u + at, v2 = u2 + 2as, and s = ut + 12at2.
Given
A 65-kg diver jumps off a 9.7-m tower
(a) Using newton's equation of motion,
v² = u² + 2gs ......... (1)
Where v = final velocity,
u = initial velocity,
s = height of the tower,
g = acceleration due to gravity.
Given: s = 9.7 m, u = 0 m/s (height jump), g = 9.81 m/s2.
Substitute into equation 1
v² = 0² + 2×9.81×9.7
v² = 190.314
v = √(190.314)
v = 13.795 m/s.
As a result, the driver's velocity when he hits the water is 13.795 m/s.
(b)
F = ma. ......... (2)
Where F is the force applied to the diver, m is the diver's mass, and an is the diver's acceleration below the water's surface.
Also using
v² = u² + 2as ......... (3)
When the diver enters the water, u = 13.795 m/s, and when the diver comes to a complete stop, v = 0 m/s.
Given are the following values: s = 2.0 m, u = 13.795 m/s, and v = 0 m/s.
Substitute in equation 3
0² = 13.795²+2(2a)
0 = 190.30203 + 4a
-4a = 190.30203
a = 190.30203/-4
a = -47.58 m/s²
Also given: m = 65 kg,
Substitute into equation 3
F = (-47.58)(65)
F = -3092.7
The Force is negative because it acts against the diver's motion.
As a result, the net force exerted on the diver while in the water equals -3092.7N.
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This is the third time I’m asking, please, On a wet road, is a higher coefficient of friction on the tires safer or a lower one and pls explain I don’t get it
Answer:
higher is safer
Explanation:
because it is a wet slippery surface, you would need more friction on the tires, to get more traction in the slippery wet road, if you had low friction you would not move anywhere and or could swerve off somewhere
what is the difference of chinese and korean music
The music performed on the Chinese instrument was typically fast-paced, technically impeccable, and pitched high. The Korean instrument, however, is normally performed in a low range and with less emphasis.
What's the name of that instrument from China?Chinese musical instrument known as the pipa has four strings and is classified as a plucked instrument. The instrument, which is sometimes referred to as the "Chinese lute," features a peculiar pear-shaped wooden body and 12 to 26 frets.
What is the most popular instrument in China?According to Shanghai Chinese Orchestra director Luo Xiaoci, the guzheng is now regarded as the most well-liked traditional Chinese musical instrument and is comparable to the piano for Western music. A flexible instrument with a wide variety of tones is the guzheng.
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which imaging modality places time of flight information on the x-axis and echo amplitude on the y-axis?
Amplitude modulation, or AM, is a modulation method used in electronic communication, most frequently for radio wave transmission of messages.
What is amplitude mode?A common collective excitation associated with the spontaneous breaking of a continuous symmetry is the amplitude (Higgs) mode. We use a combination of stochastic analytic continuation and quantum Monte Carlo (QMC) simulations to look at the dynamics of the amplitude mode in a three-dimensional dimerized quantum spin system.In physics, amplitude refers to the most displacement or distance that a point on a vibrating body or wave can travel in relation to its equilibrium location.The method of amplitude modulation involves changing the amplitude of the wave signal before it is broadcast. It is frequently used to send information using a radio carrier wave and is known by the abbreviation AM. Electronic communication is where amplitude modulation is most commonly utilized.To Learn more About Amplitude modulation refer to :
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