When we approach a whistle from one side with just an open box and the other through a closed tube, standing waves occur; their wavelength and length are connected.
How often does it occur?The wavelength of a waveform signal—the separation between two identical points (adjacent crests) in subsequent cycles—determines whether it is transmitted via space or along a wire. It is common practice in wireless systems to provide this length in meters (m), centimetres (cm), and millimeters (mm) (mm).
λ₁ = 4L
The corresponding harmonics are 3 = 4L / 3 and 5 = 4L / 5.
The common equation n = 4L / n, where n = 1, 3, 5,...
In the first equation, f = v n / 4L, we replace and clear the n = 1, 3, 5,...
Using derivatives, let's calculate the frequency change: df / dt = v n /4 dL1 / dt d / dt (1/L) ≈ - 1 / L2 dL / dt
dL/dt = 8 cm/s, where
Replaced is df/dt = -n v/L2 dL/dt
Calculate df/dt = n 340/152. 8 df/ft = -n, 12 n = 1, 3, 5,...
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if a receptor's receptive field is ___________, it allows for greater specificity of localization.
if a receptor's receptive field is small, it allows for greater specificity of localization.
About receptorsIn biochemistry and pharmacology, a receptor is a molecule of protein that receives chemical signals from outside the cell. When these chemical signals bind to receptors, some form of cellular response occurs, such as changes in the electrical activity of the cell. Receptors are located in the cell membrane, cytoplasm, and nucleus. The signaling molecule attached to a receptor is called a ligand, which can be a peptide or another small molecule such as a neurotransmitter, hormone, drug, or toxin.
Receptors can be classified based on their location. Transmembrane receptors include ion channel-linked receptors (ionotropic receptors), G protein-linked receptors (metabotropic), and receptor tyrosine kinases.[1] Intracellular receptors are found inside the cell (in the cytosol or in the cell nucleus).[1] Molecules that bind naturally to a particular receptor are known as endogenous ligands. For example, the endogenous ligand for the acetylcholine receptor is acetylcholine.
Each receptor is linked by a specific cellular biochemical pathway. Many receptors are found in most cells, and each receptor binds only with a specific structural ligand, much like a lock that accepts a specially shaped key. When a ligand binds to its receptor, it activates a biochemical pathway associated with the receptor.
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Jack(971.34 N) carries Jill (752.72) N up a 290.13 m hill to fetch a pail of water. Jack fell down and broke Jill. So Jill called an uber to get her. (Yes, I'm great at rhyming.) How much work did Jack do carrying Jill up the hill?
To solve this we must be knowing each and every concept related to work and its calculation. Therefore, 63.428KJ is the work done by jack in carrying Jill up the hill.
What is work?Work definition in Physics is "Energy transfer that happens when an item is moved across a distance with an outside force, at least portion of which is applied along the direction of the displacement".
Mathematically, the formula for work can be calculated as
Work = force × displacement
The values that are given are:
force=971.34 -752.72
=218.62N
displacement=290.13 m
substituting all the given values in the above equation, we get
Work = 218.62N× 290.13 m
On calculation, we get
Work =63,428.2J=63.428KJ
Therefore, 63.428KJ is the work done by jack in carrying Jill up the hill.
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In an airplane crash a woman is holding an 8.18 kg baby. In the crash the woman experiences a horizontal de-acceleration of 88.2 m/s. How many g’s is this de-acceleration? How much force must the woman exert to hold the baby in place?
Answer:
3.0210
Explanation:
I Don't Know
A motor scooter undergoes acceleration when it O decreases speed. O changes direction. O gains speed.O all of the above
Gains speed because Acceleration is defined as the rate of change of velocity, which can be positive (speed increase) or negative (speed decrease). In the case of a motor scooter, when it gains speed.
What is acceleration explain?Measuring the rate at which a moving entity's speed and direction change over time. When a point or thing accelerates / decelerates, it is moving straight forward. Motion on a circle increases even if the speed is constant because the vector is always changing.
What is the acceleration equation?A = v/t stands for acceleration, which is the product of the alteration in speed (v) and the shift in time (t) (t). You may use this to figure out the variation in velocity in m/s² (metres per second squared).
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a system does 164 j of work on its environment and gains 77 j of heat in the process. find the change in the internal energy of (a) the system and (b) the environment.
In the case of the system, the internal energy change can be computed as q – W 77 – 164. We will receive the result minus 87. Here is portion a. The last response, which represents a shift in internal energy, is -87 jewel.
How would you define internal energy?In thermodynamics, internal energy is a property or state function that characterises a substance's energy in the absence of capillary effects and the impacts of external magnetic, electric, and other fields.
What is inner energy, and what does it look like?The internal energy change formula is U = Q + W. In this case, U equals the overall change in the system's internal energy. Q is the amount of heat that is transferred from one system to another (outside the system).
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A load draws a complex power S = 40+j30 VA. Find the apparent power delivered to this load
50 VA
30j VAR
30 VAR
40-j30 VA
40 VA
1/(40+j30) VAR
The apparent power delivered to this load is 50VA. For a load, S = 40 + j 30 VA is the complex power. The appropriate response is option a. Power in physics is the quantity of energy transported per unit time.
The watt, which is equal to one joule per second in the International System of Units, serves as the unit of power. Power is occasionally referred to as activity in earlier writings. Energy is a scalar quantity. The precise definition of a load is as follows: Any device that allows energy to pass through it is a load. It disperses or transfers the energy to another location. The elsewhere could be the environment in the form of heat, light, flux, or another device as mechanical power or shaft energy.
S = ((40^2+30^2))^1/2
= (1600+900)^1/2= 50VA
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In chemical reactions , how does the valence configuration of bromine tend to change ?
In chemical reactions , by gaining one electron the valence configuration of bromine tend to change.
What is an electron ?The elementary electric charge of the electron is a negative one, making it a subatomic particle. Due to their lack of components or substructure, electrons, which are part of the lepton particle family's first generation, are typically regarded to be elementary particles.
There are 7 valence electrons in it. To achieve noble gas configuration, only one additional electron is needed. It will then be known as a bromide ion after receiving one additional electron. In order to create an ion, bromine gains one electron.
Thus, In chemical reactions , by gaining one electron the valence configuration of bromine tend to change.
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Could anyone please help me with this, i've been struggling on this one for quite some times. Thanks.
Answer:
A,D,B
Explanation:
I think that because the temperature near the equator is higher than other ones so currents close to the equator like A, D and B are most likely to be warm currents
What type of image is formed by a concave mirror?
Concave mirrors form both real and virtual images.
What is a Concave mirror ?A concave mirror has an inward-curving reflective surface that faces away from the light source. Light is reflected inward by concave mirrors to a single focus point. Unlike convex mirrors, a concave mirror's created image exhibits a variety of picture types based on the object's distance from the mirror.
A virtual, magnified image of the object is produced when the concave mirror is placed very close to it. As the distance between the object and the mirror increases, the size of the image decreases and real images are produced.
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How did the marine chronometer change the world?
The marine chronometer changed the world by revolutionizing the way people navigated. It allowed ships to accurately measure their longitude, enabling them to determine their exact positions at sea.
This greatly improved the accuracy of navigation and allowed ships to travel farther and more safely. Additionally, the introduction of the marine chronometer allowed for the development of global trade and the exploration of new lands.
The Impact of the Marine Chronometer on Global Exploration and TradeThe marine chronometer was a revolutionary invention that changed the world by revolutionizing the way people navigated. Prior to its introduction, navigation was an imprecise art that relied on guesswork and educated guesses. However, with the invention of the marine chronometer, ships were now able to accurately measure their longitude and determine their exact positions at sea. This greatly improved the accuracy of navigation and allowed ships to travel farther and more safely.
The impact of the marine chronometer can be seen in the development of global trade and the exploration of new lands. By allowing ships to navigate more precisely, the marine chronometer enabled more efficient trade routes and allowed for new areas to be explored. For example, the marine chronometer played a key role in the exploration of the Pacific Ocean and the discovery of Australia and New Zealand. Additionally, the marine chronometer allowed merchants to expand the scope of their trading activities and the reach of their goods.
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A cannonball with a mass of 1. 0 kilogram is fired horizontally from a 500-kilogram cannon, initially at rest, on a horizontal, frictionless surface. The cannonball is acted on by an average force of 8. 0 x 103 newtons for 1. 0 x 10-1 second.
The change in momentum will be 800kg.m/s
We are given that,
Average force = ΔF = 8. 0 x 10²newtons
Average time = Δt 1. 0 x 10-1 second
Change in momentum = Δp =?
The cannonball's impulse J is equal to the cannonball's force multiplied by its duration.
J = FΔt
However, the cannonball's change in momentum is also equal to the impulse can be written as,
J = Δp
If we combine the two equations, we get
FΔt =Δp
Additionally, we can determine the change in momentum because we are aware of the strength of the average force and the time.
FΔt =Δp
Δp = ( 8. 0 x 10³ n)( 1. 0 x 10⁻¹s)
Δp = 800kg.m/s
Therefore, the change in momentum because we are aware of the strength of the average force and the time would be 800kg.m/s .
The complete question is,
A cannonball with a mass of 1.0 kilogram is fired horizontally from a 500.-kilogram cannon, initially at rest, on a horizontal, frictionless surface. The cannonball is acted on by an average force of 8.0 × 10 3 newtons for 1.0 × 10 −1 second. What is the magnitude of the change in momentum of the cannonball during firing?
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There will be an 800 kg/m/s shift in momentum.
It is provided to us,
F = 8.0 x [tex]10^{2}[/tex]newtons is the average force.
Time on average = t1.0 x [tex]10^{-1}[/tex] second
Momentum change is equal to p,
The force of the cannonball times its duration gives rise to the cannonball's impulse J.
J = FΔt
However, the momentum change of the bullet is equally equal to the impulse and may be expressed as,
J = Δp
The result of combining the two equations is
FΔt =Δp
Because we know the average force's magnitude and the passage of time, we can also calculate the change in momentum.
FΔt =Δp
Δp = [tex]\frac{( 8. 0 ( 10^{3}))}{ ( 1. 0 ( 10^{-1}))}[/tex]
Δp = 800kg.m/s
Since we are aware of the strength of the average, the change in momentum will be 800kg.m/s
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explain how the characteristics are used to classify organisms into the six kingdoms
The organisms can be classified into the six kingdoms based on similarities or common characteristics.
Why are the characteristics are used to classify organisms ?Organisms are placed into different types of categories on the basis of similarities or common characteristics among different organisms. Some of the characteristics or qualities that are used to determine classification are cell type, nutrient intake, and mode of reproduction. The two main cell types are prokaryotic cells and eukaryotic cells.
Today, the system that is used is the Six Kingdom Classifications i.e. Plants, Animals, Protists, Fungi, Archaebacteria, and Eubacteria. These organisms are classified into different kingdoms on the basis of cell type, their ability to make food and the number of cells present in their body.
So we can conclude that on the basis of common characteristics, organisms can be classified into the many kingdoms
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A paper airplane is dropped from a balcony. what will friction from the air do to the paper airplane? speed up the airplane it will not change the airplane's speed. slow down the airplane
A paper airplane is dropped from a balcony, then the friction from the air slow down the airplane. As paper plane moves through the air, the air pushes against the airplane, hence slowing it down. This is called drag.
What is meant by drag?The force that slows the plane down as it pushes against the air it is moving through is called drag. It is a kind of friction and is also called as air resistance.
In fluid dynamics, drag is a force acting opposite to the relative motion of an object moving with respect to the surrounding fluid. Drag is non-existent, without motion.
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After the capacitor is fully charged, the battery is removed and the capacitor is discharged through the resistor. How much charge is on the capacitor after 1 time constant
The charge on the capacitor C that discharge through a resistor R is 0.36 times the initial charge of the capacitor.
A capacitor C discharge through a resistor R. Let Vi = voltage when the capacitor charges to Initial charge, Qi = CVi.
When time becomes 1 time constant, t=T, for voltage on discharging capacitor, we know, V = Vie−t/τ, where τ = time constant. Now,
Vf = Vi*e−t/τ, Vf =Vi* e−T/τ, Vf=Vi *e^-1 , Vf=Vi/e.
Now let Qi be the initial full charge on the capacitor.
Then Qi=1/2C*Vi , Qf=½ C*Vf ,Qf=1/2C*Vi/e , Qf=Qi/e , Qf = 0.36 Qi.
So the charge on the capacitor after 1 time constant is 0.36 times the initial fully charge of the capacitor.
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a 20kg girl swings back and forth on a swing whose ropes are. 4m long. the maximum height she reaches is 2m above the ground. at the lowest point she is .5m above the ground. what is the girls maximum speed
Answer:4m
Explanation:
Thats the girls maximum speed
Moby has a mass of 145 kilograms while Tim has a mass of 45 kilograms. Which one needs more force to accelerate? Explain your reasoning.
Answer:
Moby
Explanation:
Newton's 2nd Law: F = ma
a = F/m
Acceleration and mass are inversely proportional. So if Moby and Tim want to accelerate at the same rate, Moby, with the greater mass, would need more force to accelerate at the same rate as Tim.
A plane flew at a constant speed between denver and chicago. It took the plane hours to fly miles. If represents the distance that the plane flies at this speed for hours, write an equation that relates and.
An equation that relates and represents the distance that the plane flies at this speed for hours is t=d/610.
The plane flew at a constant speed in one hour,
915/1.5=610
we can write it in the form as:
610t=d
Relative Motion depends on your point of view and position change must be in relation to a reference point
Velocity is speed in a given direction. It is calculated by dividing distance by time also. A measurement of velocity must include a direction in the units Example: Todd's speed was 5 m/s but his velocity was 5 m/s East.
When graphing motion, time is on the x-axis and distance on the y-axis. The faster the motion, the steeper the slope of the straight line. Slope is calculated as the rise (distance on the y-axis) divided by run (distance on the x-axis).
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The distance that the plane covers while traveling at this speed for hours is related to and represented by the equation t=[tex]\frac{d}{610}[/tex].
In an hour, the plane maintained a constant speed,
[tex]\frac{915}{1.5}[/tex]=610
We can format it as follows:
610t=d
Your point of view affects relative motion, and any change in position must be in relation to a reference point.
Speed in a specific direction is known as velocity. In order to calculate it, distance and time are also divided. The units of a velocity measurement must contain a direction. Example: Todd's velocity was 5 m/s East while his speed was 5 m/s.
Time is on the x-axis and distance is on the y-axis when graphing motion. The slope of a straight line increases in steepness with increasing speed. The slope calculated as the rise (distance on the y-axis) divided by run (distance on the x-axis).
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what is the magnitude of δ for [ti(h2o)6]3+ in kj/mol?
The magnitude of the splitting for the ion is 97 kJ/mol.
What is the magnitude of the crystal field splitting?We know that the ligands as we know than can be able to act as point charges and as such they are able to lead to the splitting of the octahedral crystal field and then this would result in the formation of the complex
We know that there is one unpaired electron that is present in the Ti III ion and thus we would have;
Δo = hcv
Δo = crystal feild splitting energy
h = Plank's constant
c = speed of light
v = wave number
Then;
Δo = 6.6 * 10^-34 * 3 * 10^10 * 20300
Δo = 4 * 10^-19 J * 6.02 * 10^23/mol
= 242 kJ/mol
CFSE = -0.4 * 242 kJ/mol
= 97 kJ/mol
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A small rock bounces off the windshield of a moving car and experiences a large change in velocity. how does the car’s momentum change?(1 point) responses it has a much smaller change in momentum than that of the rock, in the opposite direction. it has a much smaller change in momentum than that of the rock, in the opposite direction. it has a change in momentum equal to that of the rock, in the opposite direction. it has a change in momentum equal to that of the rock, in the opposite direction. it has a change in momentum greater than that of the rock, in the opposite direction. it has a change in momentum greater than that of the rock, in the opposite direction. it does not change.
Assuming a small rock bounces off the windshield of a moving car and experiences a large change in velocity, the way in which the car’s momentum change is that: C. it has a change in momentum equal to that of the rock, in the opposite direction.
What is the law of conservation of momentum?The law of conservation of momentum states that the total linear momentum of an isolated (closed) system would always remain constant (the same) with respect to time, unless an external force is applied.
Additionally, the law of conservation of momentum states that the total momentum of two (2) interacting objects in an isolated (closed) system would be the same or remain constant, provided no external force is applied.
In this scenario, we can reasonably infer and logically deduce that in accordance with the law of conservation of momentum, the car’s momentum would be equal to the rock's momentum, in the opposite direction.
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True or false: fungi are different from animals because they have cell walls and are autotrophs.
Answer:
false fungi is from deacaying plants or mushooms...
What is atmospheric perspective the effect?
Atmospheric perspective, is an optical effect used in art, where distant objects appear hazy, less detailed, and a lighter shade of color than closer objects. This effect is created by the scattering of light in a medium such as air.
Atmospheric perspective gives a painting or drawing depth and a sense of distance, allowing the viewer to imagine a world beyond what is shown.
Atmospheric perspective is an important effect used in art to create a sense of depth and distance in a painting or drawing. It is achieved by the scattering of light in a medium, such as air, which causes distant objects to appear hazy, less detailed, and a lighter shade of color than closer objects.
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a body weighs 63 n on the surface of the earth. what is the gravitational force on it due to the earth at a height equal to half the radius of the earth
'mg=63 N, h=2R' <br> As 'g (h)=(1)/(9)g' and '(g h)/(g)=((R)/(R+h))2= ((R)/(R+R2))= (1/3)2= (1)/(9)' respectively. if it is subject to the earth's gravitational force pull at a height equal to half the planet's radius.
What is gravity, and what does it look like?The term gravitational force refers to the force that the earth exerts on a body. Examples of motion caused by gravitational force include the downward motion of water in a river, the downward motion of water in a stream, and the upward motion of a ball when it is thrown.
Why does gravity have energy?
The energy that an item retains due to its height above the Earth (i.e., whether it is farther away from or nearer to the ground) is known as gravitational energy. It represents potential energy. An object has gravitational energy because of its height above the ground.
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For one type of insulating material, the temperature of the water decreased from
85.0 °C to 65.0 °C.
The energy transferred from the water was 10.5 kJ.
specific heat capacity of water = 4200 J/kg °C
Calculate the mass of water in the can.
HELP PLS!!!!! PHYSICS
The mass of the water in the can, temperature of the water decreased from 85.0 °C to 65.0 °C is 0.125 Kg
How do I determine the mass of the water in the can?From calorimetry, we understood that heat and mass are related according to the given formula:
Q = MCΔT
Where
Q is the heat energyM is the massC is the specific heat capacityΔT is the change in temperatureUsing the above formula, the mass of the water can be obtained as follow:
Initial temperature of water (T₁) = 85.0 °CFinal temperature of water(T₂) = 65.0 °CChange in temperature (ΔT) = 65 - 85 = -20 °C Specific heat capacity of water (C) = 4200 J/KgºC Heat transferred (Q) = -10.5 KJ = -10.5 × 1000 = -10500 JMass of water (M) =?Q = MCΔT
-10500 = M × 4200 × -20
-10500 = M × -84000
Divide both sides by -84000
M = -10500 / -84000
M = 0.125 Kg
Thus, we can conclude from the above calculation that the mass of the water in the can is 0.125 Kg
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the earth revolves blank around the sun each year when viewed from above the north pole.
When viewed above the North Pole, the Earth rotates counterclockwise, from west to east. This is also called a prograde rotation.
When viewed from above Earth's North Pole Which way does Earth orbit the sun?The Earth rotates around the Sun-also counterclockwise viewed from above the North Pole, clockwise observe from the South Pole-to give us our years. The plane of the Earth's orbit is called the sphere where aureole happens. Because of this direction of rotation, we see the sun rising every day in the east and position in the west.
As we viewed above the earth revolves empty around the sun each year when viewed from above the north pole. We know that the Earth is viewed once in twenty-four hours.
So we can conclude that Earth when seen from the top of the north pole, will be seen revolve in anti-clockwise.
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At what angle is a force directed it its horizontal component is 10 N and the vertical component is 15 N?
Answer:
56.3⁰
Explanation:
∅ = tan⁻¹ (y/x) = tan⁻¹(15/10) = 56.3⁰
What is the characteristics of distress?
Distress is a state of mental or emotional suffering caused by adverse circumstances:
It can manifest itself in various forms, such as anxiety, fear, frustration, depression, and confusion. Common signs of distress include difficulty concentrating, feeling overwhelmed, and difficulty sleeping. It can also manifest itself in physical symptoms such as headaches, stomachaches, and muscle tension. Distress can be caused by a variety of factors, such as relationship problems, financial difficulties, work-related stress, and health issues.It is important to recognize the signs of distress and seek appropriate help if needed.Learn more about the characteristics of distress:
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Which option is a force?
A. Acceleration
B. Weight
C. Velocity
D. Mass
a typical magnitude of the external magnetic field in a cardiac catheter ablation procedure using remote magnetic navigation is
The magnitude of the torque on the tip of the catheter containing this permanent magnet is 4.20 x 10-3 Nm and the potential energy of the system is -0.0104 J.
Given that the magnetic field (B) = 0.080 T.
The permanent magnet has a magnetic moment of (μ) = 0.14 Am^2.
The angle of orientation of the permanent magnet is (θ) = 22°
(a) Let the magnitude of the torque = τ
We know that τ = μBsinθ such that
τ = 0.14 x 0.080 x sin22° = 4.20 x 10-3 Nm
The require torque on the tip of the catheter containing this permanent magnet is 4.20 x 10-3Nm
(b) Let the potential energy of the system be U
We know that U = -μBcosθ
U = -(0.14 x 0.080 x cos22°) = -0.0104 J
Hence the potential energy of the system consisting of the permanent magnet in the catheter and the magnetic field provided by the external magnets is -0.0104J.
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complete question: A typical magnitude of the external magnetic field in a cardiac catheter ablation procedure using remote magnetic navigation is B = 0.080 T. Suppose that the permanent magnet in the catheter used in the procedure is inside the left atrium of the heart and subject to this external magnetic field. The permanent magnet has a magnetic moment of 0.14 Am^2. The orientation of the permanent magnet is 22° from the direction of the external magnetic field lines.
(a) What is the magnitude of the torque on the tip of the catheter containing this permanent magnet?
(b) What is the potential energy of the system consisting of the permanent magnet in the catheter and the magnetic field provided by the external magnets?
The permanent magnet-containing catheter's tip experienced a torque of 4.20 x 10-3 Nm, and the system's potential energy was -0.0104 J.
What causes more torque?Installing a turbocharger or supercharger is a practical alteration that will greatly boost torque. Your engine's power is increased via forced induction, which forces air into the engine. The amount of time a turbocharger has to spool before it benefits torque will depend on the torque curve you choose.
In light of the magnetic field's (B) value of 0.080 T.
The magnetic moment of the permanent magnet is () = 0.14 Am2.
The permanent magnet's orientation angle is () = 22°.
(a) Set the torque's magnitude to.
We are aware that = Bsin, thus
4.20 x 10-3 Nm is equal to = 0.14 x 0.080 x sin22°.
4.20 x 10-3Nm of required torque must be applied to the catheter tip housing this permanent magnet.
(b) Set the system's potential energy to U.
We are aware that U = -Bcos.
U is equal to -(0.14 x 0.080 x cos22°) = -0.0104 J.
In light of this, the potential energy of the system comprised of the catheter's permanent magnet and the magnetic field created by the external magnets is equal to -0.0104J.
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Who was the creator of the first chronometer accurate at sea?
The first creator of the chronometer at sea which is also called marine chronometer is John Harrison.
Who is John Harrison?John Harrison is a self-educated english man who work as carpenter and clockmaker. He was born at 24 march 1963 and died at 24 march 1776. During his time, there were no any device that can determine the longitude at the seas until marine chronometer invented. Marine chronometer was invented in 1761 and has a great impact to the sailor. After the invention, Navigator have the ships accurate position on the sea that cause the safety of the long journey in the sea are highly increase.
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NaHCO3 + CaCl2 = CaCO3 + 2NaCl + H2O how can I balance this equation
Answer:
NaHCO3 + CaCl2 = CaCO3 + 2NaCl + H2O
Explanation:
It is physically impossible to balance this equation you may be missing another compound
