The accuracy of the non-relativistic momentum formula is 5.32 10 3 keV.
What is momentum?momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton’s second law of motion states that the time rate of change of momentum is equal to the force acting on the particle. See Newton’s laws of motion.From Newton’s second law it follows that, if a constant force acts on a particle for a given time, the product of force and the time interval (the impulse) is equal to the change in the momentum. Conversely, the momentum of a particle is a measure of the time required for a constant force to bring it to rest.To learn more about Isaac Newton’s second law of motion refer to:
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A hockey player skates across a rink of length 75m in 8.9 seconds. What is the average speed of the hockey player? The hockey player is moving at a speed of 9.5 m/s. If it takes him 2 seconds to come to a stop under constant acceleration, how far does he travel while stopping?
The average velocity is given by
\(v=\frac{d}{t}\)Where d is the distance covered and t is the time taken.
For the given case, we have
d = 75 m
t = 8.9 s
\(v=\frac{d}{t}=\frac{75}{8.9}=8.43\; \frac{m}{s}\)Therefore, the average speed of the hockey player is 8.43 m/s
The hockey player is moving at a speed of 9.5 m/s.
5. A boat increases its speed from 5.0 m/s to 7.5 m/s over a
distance of 50.0 m. What is the boat's acceleration?
Answer:
(v2² - v1²)/(2x) = (7.5² - 5.0²)/(2*50) = 0.3125 m/s²
The acceleration of the boat is 0.16 m/s².
We have a boat.
We have determine the boat's acceleration.
What is Acceleration ?The rate of change of velocity with time is called Acceleration.
a = dx/dt
According to the question -
Initial velocity (u) = 5m/s
Final velocity (v) = 7.5m/s
Distance (d) = 50 m.
Now -
v²- u² = 2aS
(v + u)(v - u) = 2aS
12.5 x 2.5 = 200 a
a = 0.16 m/s².
Therefore, the acceleration of the boat is 0.16 m/s².
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GIVING BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 23pts-
Answer:
B is the answer!!
Explanation:
7. An object with a mass of 2.0 kg is accelerated from rest. The above graph shows the magnitude of the net force
as a function of time. At t = 4.0 s the object's velocity is closest to which of the following?
a. 2.0 m/s
b. 4.0 m/s
C. 10 m/s
d. 13 m/s
The object's velocity accelerating from rest from the applied force and time is closest to 4 m/s.
Velocity of the object
The velocity of the object can be determied by applying Newton's second law of motion as shown below;
F = ma
where;
F is the applied forcem is the mass of the objecta is the acceleration of the objectThe acceleration of the object is calculated as follows;
a = F/m
at time, t 4.0 s, the corresponding force = 2 N
a = 2/2
a = 1 m/s²
Velocity of the object is calculated as;
v = u + at
v = 0 + 1 x 4
v = 4 m/s
Thus, the object's velocity accelerating from rest from the applied force and time is closest to 4 m/s.
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can someone help with this part of the sentence fills
F = ma, or force equal to mass times acceleration, is Newton's second law of motion.
What happens in the second law of Newton?Second Law of Movement by Newton Since it shows how powers and movement are connected, F=ma is essential. You can use it to determine an object's velocity and position, as well as its acceleration with known forces. For inventors, scientists, and engineers, This is extremely helpful.
As per Newton's Second Law of Movement, when a power works on a mass, the mass speeds up (gains speed) (object). When you ride a bicycle, you can see this law of motion in action in a great way. Your bike makes up the mass. Your leg muscles press against the bicycle's pedals to produce the force.
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applied a force of 55 N to accelerate a 10 kg box at 3 m/s2 along a horizontal surface. What is the magnitude of the frictional force?
Answer:
25N
Explanation:
if you calculate it right the answer will be 25
As a battery is used to charge a capacitor, does the overall charge inside the battery get smaller, greater, or stay the same?.
When a battery is used to charge a capacitor, does the battery's total charge get smaller.
What is capacitor?A device without an element is referred to as a capacitor. The capacitance of a capacitor is defined as the ratio of the charge stored in either of its conductors to the potential difference between them. It is assumed that an earthed conductor's capacitance will visibly rise when it is moved close to another conductor in order for a capacitor to work. As a result, a capacitor has two plates with equal and opposing charges that are spaced apart from one another.
When a battery is used to charge a capacitor, electrons that will eventually gather on one plate and become negatively charged are given energy. The opposite plate then acquires a positive charge.
Additionally, this electron is not coming from a battery. When a battery is discharged, its energy has been consumed.
Therefore, while charging a capacitor, the battery's overall charge remains constant.
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Describe a way that gravity influenced the formation of the solar system, with the planets orbiting the sun.
Gravity influenced the formation of the solar system, with the planets orbiting the sun.
What is Gravitational Force ?Gravitational force is force of attraction between two masses. Gravitational force(F) between two bodies is directly proportion to the product of masses(m₁,m₂) of two bodies and inversely proportional to square of distance(r) between them. mathematically it is written as,
F \(\alpha\) m₁.m₂
F \(\alpha\) 1/r²
F = G m₁,m₂÷r²
where G is gravitational constant, whose value is 6.6743 × 10⁻¹¹ m³ kg-1s⁻².
Force is expressed in Newton N in SI unit. its dimensions are [M¹L¹T⁻²].
According to Kepler's first law of motion, every planet is moving in an elliptical orbit with sun has situated at one of the foci of the orbit.
when a planet moves in the orbit around the sun, it moves in a stable orbit. in this orbit , centripetal force is equal to centrifugal force, in this case centripetal force appears as gravitational force. Means Gravitational force between sun and planet balances the centrifugal force which is outwards. In such a way gravity influenced the formation of the solar system.
Hence gravity plays crucial role in the formation of solar system.
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a rifle that shoots bullets at 450 m/s is to be aimed at a target 49.2 m away. if the center of the target is level with the rifle, how high above the target must the rifle barrel be pointed so that the bullet hits dead center? (neglect air resistance.)
The rifle barrel must be pointed approximately 0.0581 meters or 5.81 centimeters above the target to hit dead center.
To determine how high above the target the rifle barrel must be pointed, we can use the principles of projectile motion. We need to find the vertical displacement or the height above the target that the bullet must travel.
Let's break down the problem and solve it step by step:
First, we can consider the horizontal motion of the bullet. Since there is no acceleration horizontally, the time it takes for the bullet to travel 49.2 m horizontally is given by the formula:
time = distance / velocity
time = 49.2 m / 450 m/s
time ≈ 0.1093 s
Now, let's consider the vertical motion of the bullet. We can use the formula for vertical displacement in projectile motion:
displacement = initial vertical velocity * time + (1/2) * acceleration * \(time^2\)
Since the bullet starts at the same height as the target and we want it to hit dead center, the initial vertical velocity is zero.
displacement = 0 * time + (1/2) * acceleration *\(time^2\)
The only force acting on the bullet vertically is gravity, which causes it to accelerate downward. The acceleration due to gravity is approximately 9.8 m/\(s^2\).
\(displacement = (1/2) * 9.8 m/s^2 * (0.1093 s)^2\)
displacement ≈ 0.0581 m
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A physical property is
O onethat describes using our 5 sences
O stops when a chemical reaction is occurring
one that makes something new
O one that describes a chemical change.
Answer:
One that we describe using our 5 senses
Explanation:
A physical property describes something we can physically observe.
why do astronomers believe that the jovian planets must contain rocky material in their cores?
Astronomers believe that the Jovian planets (Jupiter, Saturn, Uranus, and Neptune) must contain rocky material in their cores due to their overall composition and formation.
These gas giants have large masses and gravitational fields, which indicate the presence of substantial solid material. The core is thought to have formed from the accumulation of heavier elements such as rocks, metals, and ices during the early stages of planetary formation.
Additionally, measurements of the planets' densities and interior models support the presence of a rocky core, providing evidence for the existence of solid material at their centers.
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Find a unit vector perpendicular to the vectors given A=4i+2j+2k and B=4i-4j+8k.
The cross product of A and B is perpendicular to both A and B.
A × B = (4i + 2j + 2k) × (4i - 4j + 8k)
A × B = 16 (i × i) - 16 (i × j) + 32 (i × k) + 8 (j × i) - 8 (j × j) + 16 (j × k) + 8 (k × i) - 8 (k × j) + 16 (k × k)
A × B = -16 (i × j) - 32 (k × i) - 8 (i × j) + 16 (j × k) + 8 (k × i) + 8 (j × k)
A × B = -16k - 32j - 8k + 16i + 8j + 8i
A × B = 24i - 24j - 24k
The magnitude of A × B is
||A × B|| = 24 ||i - j - k|| = 24√3
Dividing A × B by its magnitude gives a unit vector,
(A × B)/||A × B|| = 1/√3 (i - j - k)
A cosmic ray electron (m = 9.110-31 kg) moves at 7.16106 m/s perpendicular to the Earth's magnetic field at an altitude where field strength is 1.13*10-5 T. What is the radius r (in m) of the circular path the electron follows?
The radius of the circular path the electron follows is approximately 3.175*10^-3 meters.
The radius r of the circular path the electron follows can be found using the equation for the Lorentz force, which is F = q(v x B), where F is the force on the electron, q is the charge on the electron, v is the velocity of the electron, and B is the magnetic field.
In this case, the electron has a charge of -1.602*10^-19 C (since it's a negatively charged particle), and the magnetic field strength is 1.13*10^-5 T. The velocity of the electron is 7.161*10^6 m/s.
Using these values and the equation F = q(v x B), we can solve for the force on the electron:
F = (-1.602*10^-19 C)(7.161*10^6 m/s)(1.13*10^-5 T)
F = -1.161*10^-13 N
The direction of the force is perpendicular to both the velocity of the electron and the magntic field, so it points towards the center of the circular path.
The force on the electron is also given by F = ma, where m is the mass of the electron and a is its acceleration. Since the acceleration is centripetal (directed towards the center of the circle), we can use the equation for centripetal acceleration, which is a = v^2/r, where v is the velocity of the electron and r is the radius of the circle.
Setting F = ma and equating the expressions for F, we get:
ma = q(v x B)
m(v^2/r) = q(v x B)
r = mv/qB
Plugging in the values for m, v, q, and B, we get:
r = (9.11*10^-31 kg)(7.161*10^6 m/s)/(-1.602*10^-19 C)(1.13*10^-5 T)
r = -3.175*10^-3 m
Note that the negative sign indicates that the circular path is in the opposite direction of the velocity of the electron. Taking the absolute value, the radius of the circular path is:
|r| = 3.175*10^-3 m
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true/false. the greater ability to conduct current the higher of the battery
True. The greater the ability of a battery to conduct current, the higher its output voltage will be.
This is because the voltage of a battery is directly related to its ability to push electrical current through a circuit. A battery with a high capacity and low internal resistance will be able to conduct more current than one with a low capacity and high internal resistance, resulting in a higher output voltage. This is why it is important to choose a battery with a high C-rating (capacity) and low internal resistance for high-performance applications, such as RC cars and drones, where maximum power output is required. In general, batteries with higher capacities and lower internal resistances are more expensive than those with lower capacities and higher internal resistances, but they offer better performance and longer life.
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what is the state of the electrical charge when a neuron is at resting potentia
When a neuron is at resting potential, the state of the electrical charge is negative inside the neuron compared to the outside
Because of an unequal distribution of ions like potassium (K+) and chloride (Cl-) inside and outside the neuron, the interior of the neuron is negatively charged at resting potential. The membrane of the neuron is selectively permeable, permitting certain ions to pass while preventing others from doing so. A gradient in electrochemistry results from this.
Ion channels, notably the sodium-potassium pump, which actively transfers sodium ions (Na+) out of the neuron and potassium ions (K+) into the neuron, are responsible for maintaining the resting potential. As a result, the neuron produces an excess of negative charge within and an excess of positive charge outside.
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Skateboard A Force: 33 N Time: 0. 12 s Skateboard B Force: 33 N Time: 0. 57 s Skateboard C Force: 33 N Time: 0. 78 s Which skateboard has the greatest impulse?.
The skateboard that has the greatest impulse is Skateboard C (Impulse = 25.74 Ns)
From the question,
We are to determine which skateboard has the greatest impulse. To do this, we will calculate the impulse of each skate board.
Impulse can be calculated by using the formula
I = Ft
Where I is the impulse
F is the force
and t is the time
For Skateboard AForce = 33 N
Time = 0. 12 s
∴ Impulse = 33 × 0.12
Impulse = 3.96 Ns
For Skateboard BForce = 33 N
Time = 0. 57 s
∴ Impulse = 33 × 0.57
Impulse = 18.81 Ns
For Skateboard CForce = 33 N
Time = 0. 78 s
∴ Impulse = 33 × 0.78
Impulse = 25.74 Ns
Hence, the skateboard that has the greatest impulse is Skateboard C (Impulse = 25.74 Ns)
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Answer:
Skateboard C has the greatest impulse of the three.
Explanation:
how much mass could the person hold with a muscle exertion of 450 n ?
In order to calculate how much mass could the person hold with a muscle exertion of 450 N, we need to use the formula given below:
F = maWhere F is the force applied, m is the mass of the object, and a is the acceleration produced by the force.Let's rearrange this formula to solve for m:m = F/a
We can assume that the acceleration produced by the force is equal to the acceleration due to gravity (g) which is approximately 9.81 m/s².Substituting the given values:
m = F/a = 450 N / 9.81 m/s² ≈ 45.9 kg
Therefore, the person could hold a mass of approximately 45.9 kg with a muscle exertion of 450 N.
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The process of determining each of the forces that combine to make up a resultant force is called
The process of determining each of the forces that combine to make up a resultant force is called force decomposition or vector resolution.
Force decomposition, also known as vector resolution, is a process used in physics to analyze and determine individual forces that make up a combined, resultant force. This process involves breaking down a single vector, which represents the total force, into its component vectors, which represent individual forces acting on an object. By doing so, we can better understand how each force contributes to the overall motion and behavior of an object.
To perform force decomposition, we typically use trigonometry and vector algebra to determine the magnitudes and directions of the individual forces. This information can then be used to analyze the forces at play in various physical scenarios and to make predictions about the object's behavior.
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The moon has a gravitational field strength one-sixth that of earth's. If a person has a mass of 60kg on Earth, how much will he weigh on the moon
The moon has a gravitational field strength one-sixth that of earth's. If a person has a mass of 60kg on Earth. Weight on moon = 10kg.
The weight of an object is the force exerted on it by gravity, which is proportional to its mass and the strength of the gravitational field. The gravitational field strength on the moon is one-sixth that of Earth's, meaning that the force of gravity pulling on objects is weaker on the moon.
To calculate the weight of a person on the moon, we need to multiply their mass by the gravitational field strength of the moon, which is 1/6 or 0.1667 of the Earth's. Therefore, the weight of a 60kg person on the moon would be:
Weight on moon = mass x gravitational field strength on moon
Weight on moon = 60kg x 0.1667
Weight on moon = 10kg
The person would weigh 10kg on the moon, which is significantly less than their weight on Earth. This is because the gravitational pull on the moon is much weaker than that on Earth. It's important to note that the person's mass remains the same regardless of where they are, while their weight varies depending on the strength of the gravitational field.
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Can someone please help me with science.
Answer:
I think it is D or A
Explanation:
I have not done this in a long time, so sorry if wrong.
obtain an expression for the isothermal compressibility κ = −1/v(∂v/∂p)t for a van der waals gas.
The van der Waals equation of state can be written as (P + a/v²)(v - b) = RT, where P is the pressure, v is the molar volume, T is the temperature, R is the gas constant, and a and b are constants that account for intermolecular forces and finite molecular size, respectively.
Differentiating this equation with respect to pressure at constant temperature gives ∂v/∂P = R(v - b)/(P + a/v²)². Substituting this expression into the definition of isothermal compressibility κ = −1/v(∂v/∂P)t yields κ = (RT/(P + a/v²) - b)/(vRT). Simplifying this expression and noting that a/v² is small compared to P for a van der Waals gas, we can write κ = (1/v - b)/(RT). This expression shows that the isothermal compressibility of a van der Waals gas is influenced by both its molar volume and the constant b that accounts for molecular size.
The isothermal compressibility (κ) of a Van der Waals gas can be obtained using the given expression: κ = -1/v(∂v/∂p)t. Here, v represents the molar volume, p is the pressure, and t is the temperature. For a Van der Waals gas, the equation of state is given by (p+a/v²)(v-b)=RT, where a and b are constants, and R is the gas constant. By differentiating this equation with respect to pressure and holding temperature constant, we can obtain the required expression for isothermal compressibility. After differentiation and some simplification, we arrive at the expression: κ = (1/(RT - a/v²)).
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1. If a car travels 40m in 30 seconds how fast is it
going?
Answer: 80 mph
Explanation:
if an electric field is being generated by a positive charge a. what will be direction of electric field lines - away or toward the charge? b. if another test charge q is brought in this electric field, and released, where will q move - toward or away from original charge q? c. if instead a -ve charge q is brought into the field and released, predict where would it move - toward or away from the charge q?
An electric field is a field that surrounds a charged particle or a collection of charged particles and can affect other charged particles in the vicinity.
What do you mean by electric field ?The strength of the electric field at a particular point is defined as the force per unit charge at that point. It is a vector field that represents the force that would be exerted on a test charge placed in that field.
Electric fields can be created by stationary charges or by changing charges, such as those in an oscillating electric circuit. They are an essential component of our understanding of the behavior of charged particles and play a crucial role in many natural phenomena and technological applications, including electricity, electromagnetism, and electronics.
a. The direction of electric field lines generated by a positive charge is away from the charge. Electric field lines always point away from positive charges and toward negative charges.
b. If a positive test charge "q" is brought into this electric field and released, it will move away from the original positive charge. Electric field lines exert a force on charged particles in the direction of the field lines, and positive charges experience a force away from a positive charge.
c. If a negative test charge "q" is brought into this electric field and released, it will move toward the original positive charge. Electric field lines exert a force on charged particles in the direction of the field lines, and negative charges experience a force towards a positive charge.
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An object of height 2.3 cm is placed 27 cm in front of a diverging lens of focal length 17 cm. Behind the diverging lens, and 11 cm from it, there is a converging lens of the same focal length. A 50% Part (a) Find the location of the final image, in centimeters beyond the converging lens. A 50% Part (b) What is the magnification of the final image? Include its sign to indicate its orientation with respect to the object.
(a) The location of the final image beyond the converging lens is 12.67 cm.
(b) The magnification of the final image is -0.82, indicating that it is inverted with respect to the object.
To find the location of the final image, we can use the lens formula for thin lenses, which is given by 1/f = 1/v - 1/u, where f is the focal length, v is the image distance, and u is the object distance.
For the diverging lens, u = -27 cm (since the object is in front of the lens), and f = -17 cm (negative for diverging lens). Using the lens formula, we find v1 = -153 cm.
For the converging lens, the object distance is -11 cm (since it is behind the diverging lens), and f = 17 cm. Using the lens formula again, we find v2 = 12.67 cm.
The magnification of the final image can be calculated using the formula magnification = v2/v1, which gives us -0.82. The negative sign indicates that the image is inverted with respect to the object.
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Brainliest if correct!_A particle is projected vertically upwards from a fixed point O. The speed of projection is u m/s. The particle returns to O 4 seconds later. Find:
a) the value of u
b) the greatest height reached by the particle
c) the total time of which the particle is at a height greater than half its greatest height
Thank you so much!
The velocity, u, has a value of 19.6 m/s. The particle has a maximum height of 19.6 m. The particle spends a total of 2.33 s at a height more than half of its highest height.
What does the velocity, u, equal?We can apply the formula for the period of flight of a vertically projected particle to determine the value of the velocity, u: t = 2u/g.
After 4 seconds, the particle returns to the same location, therefore we have:
2t = 4
When the value of t is substituted in the first equation, we obtain:
u = gt/2 = 9.8 x 2
u = 19.6 m/s
b) The formula for the maximum height attained by a vertically projected particle can be used to determine the particle's greatest height:
h = u²/2g
Substituting the value of u, we get:
h = 19.6²/(2 x 9.8)
h = 19.6 m
b) We can first determine the height at which the particle is half its greatest height in order to determine the total amount of time the particle is at a height higher than half its greatest height:
\(h/2 = (u^2/2g)/2 = u^2/4g\)
Substituting the value of u, we get:
\(h/2 = 19.6^2/(4 x 9.8) = 24.01 m\)
Therefore, when the particle is over 24.01 m, it is at a height that is larger than half of its maximum height.
Next, we can determine how long it took the particle to ascend to this height:
\(h = ut - (1/2)gt^224.01 = 19.6t - (1/2)9.8t^2\)
Solving this quadratic equation, we get:
t =2.33s or t=4.10 s
The particle ascends to a height of 24.01 m in 2.33 seconds, and it descends to the ground in 1.67 seconds (4 - 2.33).
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what max shear stress formula with poisson ratio?
The max shear stress formula with Poisson ratio is: τmax = (σ1 - σ2) / 2 + ((σ1 + σ2) / 2) * ν
τmax is the maximum shear stress, σ1 is the maximum normal stress, σ2 is the minimum normal stress, and ν is the Poisson ratio.
The Poisson ratio is a constant that represents the ratio of the transverse strain to the axial strain.
By using this formula, engineers and designers can determine the maximum amount of stress that a material can withstand before it fails, allowing them to design safer and more efficient structures and components.
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a race car is traveling at a speed of 80.0m/s on a circular race track of radius 450m what is the centripetal acceleration
Answer:
The answer of this question is =1.258*10-4
3. Two identical metal balls carry charges q₁ and q2 a. Take q₁ =-q2 = 2x10¯²C. Put them in contact. What is then the charge and the number of electrons forming the charge on each ball? b. Same question if 9₁= 1.5x10¯² C and q₂ = -2x10¯² C
(a) The number of electrons in charge q₁ and q₂. are 12 × 10¹⁶ electrons respectively.
(b) The number of electrons in charge q₁ and q₂. are 9 × 10¹⁶ electrons and 12 × 10¹⁶ electrons respectively.
Two identical metal balls carry charges q₁ and q₂.
Now, we have:
q₁ = - q₂ = 2 × 10⁻² C
The charge, when we put them in contact is:
q = q₁ + q₂ = 2 × 10⁻² C - 2 × 10⁻² C = 0
`Now we know, that the number of electrons in one coulomb of charge is 6 × 10¹⁸.
Therefore, the number of electrons in q₁ is:
Number of electrons = 2 × 10⁻² × 6 × 10¹⁸
= 12 × 10¹⁶ electrons
Now,
q₁ = 1.5 × 10¯² C
q₂ = - 2 × 10¯² C
Now, the number of electrons in charge q₁,
= 1.5 × 10¯² × 6 × 10¹⁸ = 9 × 10¹⁶ electrons
The number of electrons in the charge q₂ is:
= 2 × 10¯² × 6 × 10¹⁸ = 12 × 10¹⁶ electrons
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The diagram below shows a wave. The feature of the wave are labeled A, B, C, and D. Which label identifies the wavelength?
According to the given diagram, the c identifies the wavelength of the curve. Hence, option C is correct.
What is wavelength?In order to characterize waveform signals that are transmitted across wires or into space, the term "wavelength" is used to refer to the separation between two identical positions (adjacent crests) in succeeding cycles. Typically, this length in wireless systems is measured in meters (m), centimeters (cm), or millimeters (mm) (mm). When describing the wavelength of infrared (IR), visible light (UV), and gamma radiation, units of 10-9 nanometers (nm) or angstroms (10-10 m) are more usually used.
The relationship between frequency and wavelength is inverse, with frequency being the number of wave cycles per second. A signal's wavelength shortens as its frequency rises, or we may say that the relationship between wavelength and refractive index is inverse.
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suppose you want to observe the apparent retrograde motion of mars. how long will you need to see it?
You would need to observe Mars for several weeks to see its apparent retrograde motion.
Mars undergoes retrograde motion when it appears to move backwards in its orbit relative to the background stars. This is an optical illusion caused by the motion of Earth and Mars around the sun.
The apparent retrograde motion of Mars lasts for several weeks, typically between 20 and 80 days. During this time, Mars appears to move westward across the sky instead of its usual eastward motion. To observe this phenomenon, you would need to track the position of Mars over a period of several weeks and compare it to the positions of the surrounding stars.
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