Elements are arranged in the periodic table based on various patterns. For example, the element magnesium (Mg) has a higher atomic mass than the element sodium (Na). Hence option B is correct.
Atom is smallest entity of a body. Body is made up of atoms. it is basic building block of a body. An atom or Elements consist of electrons, protons and neutrons as sub atomic particle. whole mass of the atom is concentrated at the center of the atom which we call it as nucleus, nucleus consist of proton and neutron. Electron revolve around the nucleus at determined(fixed) orbit. Total number of protons in the atom decides the atomic number and the elements in the periodic table.
Hence option B is correct.
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under what circumstances do we see a comet with a nucleus, coma, and tails? match the words in the left column to the appropriate blanks in the sentences on the right.
A comet is typically seen with a nucleus, coma, and tails when it gets close enough to the sun to start heating up.
As the icy nucleus melts, it releases gas and dust, creating a coma around the nucleus. The solar wind then pushes some of this material away from the nucleus, forming the comet's tails. Therefore, we can see a comet with a nucleus, coma, and tails when it enters the inner solar system and begins to heat up due to the sun's radiation.
We see a comet with a nucleus, coma, and tails under the following circumstances: A comet approaches the inner solar system, where the Sun's heat causes the nucleus, which is made of ice and dust, to vaporize and create the coma, a cloud of gas and dust surrounding the nucleus. As the comet gets closer to the Sun, solar radiation pressure and solar wind push the gas and dust in the coma away from the Sun, forming the tails. There are typically two tails: the dust tail, which reflects sunlight and appears bright and curved, and the ion tail, which is made of ionized gas and follows the magnetic field lines of the solar wind, appearing straight and less bright.
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temperature also decreases with altitude. how does that relate to the change in air density?
As altitude increases, the temperature decreases due to the decrease in air pressure. This decrease in temperature causes the air molecules to move slower and become more compact, which in turn decreases the air density.
Therefore, the decrease in temperature at higher altitudes directly relates to the decrease in air density.
As temperature decreases with altitude, it affects air density. When the temperature drops, the air molecules move slower and become more compact, leading to an increase in density.
However, since air pressure also decreases with altitude, this counteracts the increased density due to temperature drop. Overall, air density decreases as altitude increases because the decrease in air pressure has a more significant impact.
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Find the value of F1 (Rounded to 3 digits)
The value of the force F1 is 460 N. The right option is None of the above.
What is a force?Force is the product of mass and acceleration.
To find the value of the force F1 as shown in the diagram, we use the formula below
Formula:
sin∅(F+F1) = mg.................... Equation 1Where:
∅ = Angle to the horizontal = 30°m = Mass = 100 kgg = Acceleration due to gravity = 9.8 m/s²F = Force = 1500 NF1 = Unkown forceSubstitute these values into equation 1 and solve for F1
cos30°(1500+F1) = 100×9.80.5(1500+F1) = 9801500+F1 = 980/0.51500+F1 = 1960F1 = 1960-1500F1 = 460 NHence, the right option is None of the above.
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a thin reflective coating is applied to glass to increase the amount of infrared (ir) light that is reflected from the glass. the refractive index of the coating is 1.7 and the refractive index of the glass is 1.5. what is the thinnest layer of coating that will result in the constructive interference of reflected infrared light with wavelength of 800 nm?
The thinnest layer of coating that will result in the constructive interference of reflected infrared light with a wavelength of 800 nm is approximately 235.3 nm.
For constructive interference to occur, the extra distance traveled by the wave reflected from the coating must be equal to an integer number of wavelengths. We can use the following formula to find the thinnest layer of coating that satisfies this condition:
2nt = mλ
where t is the thickness of the coating, n is the refractive index of the coating, m is an integer representing the order of the interference (m = 0 for the first order), and λ is the wavelength of the light.
In this case, we want to find the thickness of the thinnest coating that will result in constructive interference for infrared light with a wavelength of 800 nm. We can assume that m = 0 for the first order of interference, so the formula simplifies to:
2nt = λ
Solving for t, we get:
t = λ/2n
Substituting the values given in the problem, we get:
t = (800 nm) / (2 x 1.7)
t = 235.3 nm
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two waves are travelling through outer space. wave 1 has a frequency of 300 mhz and wave 2 has a frequency of 300 hz. how does the speed of wave 1 (v1) compare to wave 2 (v2)?
Wave 1 is traveling much faster than wave 2.The speed of a wave depends on the properties of the medium through which it is traveling.
In outer space, there is no medium, so the speed of the waves is determined by the fundamental properties of space itself, which is the speed of light (c).
The frequency of a wave is the number of complete cycles it completes in one second. Therefore, wave 1, with a frequency of 300 MHz (million hertz), completes 300 million cycles per second, while wave 2, with a frequency of 300 Hz (hertz), completes only 300 cycles per second.
The speed of a wave is related to its frequency and wavelength through the equation v = fλ, where v is the wave speed, f is the frequency, and λ is the wavelength.
Since both waves are traveling through the same medium (outer space) and the speed of the waves is the same, we can set the two equations equal to each other to compare the wavelengths of the two waves:
v1 = f1λ1
v2 = f2λ2
c = f1λ1
c = f2λ2
λ1 = c/f1
λ2 = c/f2
Substituting the given frequencies, we get:
λ1 = c/300 MHz
λ2 = c/300 Hz
Since the speed of light is much greater than the speed of either wave, we can assume that it is the same for both waves. Therefore, we can compare the wavelengths directly:
λ1/λ2 = (c/300 MHz)/(c/300 Hz) = 10^6
This means that the wavelength of wave 1 is a million times shorter than that of wave 2. Since the speed of light is the same for both waves, we can see that the speed of wave 1 (v1) is also a million times faster than that of wave 2 (v2):
v1 = c/λ1 = c/(c/300 MHz) = 300 MHz
v2 = c/λ2 = c/(c/300 Hz) = 300 Hz
Therefore, wave 1 is traveling much faster than wave 2.
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When calcuating a direction of magnetic force using velocity direction and direction of magnetic force, if you hand points into page and fingers point of of page, what does this mean?
To calculate the direction of the magnetic force using velocity direction and direction of the magnetic field, you can use the right-hand rule.
In this case, when your hand points into the page (representing the direction of the velocity) and your fingers point out of the page (representing the direction of the magnetic field), it means the following:
1. Align your right hand such that your thumb points in the direction of the velocity (into the page).
2. Point your fingers in the direction of the magnetic field (out of the page).
3. The direction of the magnetic force is indicated by the direction of your palm when you curl your fingers from the magnetic field direction towards the velocity direction.
So, if your hand points into the page and your fingers point out of the page, the magnetic force direction will be perpendicular to both the velocity direction and the magnetic field direction, following the right-hand rule.
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how are wavelength, frequency, and energy related for photons of light? how are wavelength, frequency, and energy related for photons of light? there is no simple relationship because different photons travel at different speeds. longer wavelength means higher frequency and higher energy. longer wavelength means lower frequency and higher energy. longer wavelength means higher frequency and lower energy. longer wavelength means lower frequency and lower energy.
Wavelength, frequency, and energy are all related to photons of light. Photons are the smallest unit of light and they have a unique relationship between their wavelength, frequency, and energy.
The wavelength of a photon determines its color, and the frequency of the photon determines its energy. A longer wavelength means lower frequency and lower energy, while a shorter wavelength means higher frequency and higher energy.
This relationship is known as the wave-particle duality, which suggests that photons behave both as particles and waves. The energy of a photon is directly proportional to its frequency, which means that higher frequency photons have higher energy.
This is why ultraviolet light, which has a higher frequency, is more dangerous to humans than visible light, which has a lower frequency.
Understanding the relationship between wavelength, frequency, and energy is important for various applications, including in the development of lasers, telecommunications, and medical imaging.
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if a battery is short-circuited by a heavy copper wire being connected from one terminal to the other, the temperature of the copper wire rises. why does this happen?
The temperature of the copper wire rises due to the high current flow and the resistance of the wire causing Joule heating.
The rise in temperature of the copper wire is due to the high current flowing through it.
When the battery is short-circuited, the resistance in the circuit is very low, causing a large current to flow.
The wire's resistance causes it to heat up, as power is dissipated in the form of heat. The heavier the wire and the longer it is, the more heat it will generate. This is known as Joule heating. In summary, the temperature of the copper wire rises due to the high current flow and the resistance of the wire causing Joule heating.
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if the height difference between the lower and upper pipe is 12 m and the area of the upper pipe is 10 cm2, what is the water pressure in the upper pipe? ignore the viscosity of water and assume the water always fills the pipe. (the density of water is 1000 kg/m3.)
The water pressure in the upper pipe is approximately 117.72 Pa if the height difference between the lower and upper pipe is 12 m and the area of the upper pipe is 10 cm2.
The pressure of water in the upper pipe can be calculated using the following formula:
P = ρgh
where P is the pressure, ρ is the density of water (1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²), and h is the height difference between the lower and upper pipe (12 m).
However, the area of the upper pipe is given in square centimeters (cm²), so we need to convert it to square meters (m²) before we can use the formula.
1 cm² = 0.0001 m²
Therefore, the area of the upper pipe is:
10 cm² * 0.0001 m²/cm² = 0.001 m²
Now we can plug in the known values into the formula to get:
P = ρgh = 1000 kg/m³ * 9.81 m/s² * 12 m * 0.001 m²
Simplifying, we get:
P = 117.72 Pa
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a circular metal ring is situated above a long straight wire, as shown in the figure. the straight wire has a current flowing to the right, and the current is decreasing with time. which statement is true?
The statement that is true is B. There is an induced current in the wire ring directed in clockwise orientation.
It should be observed that as the current in the wire increases, so will the outward flux. Because the magnetic flux that is associated with the wire ring changes, an emf is induced in the wire ring.
The induced current in the wire ring will flow in a direction to lower the outward magnetic flux, according to Lenz law. The ring will also follow the right-hand palm rule. As a result, an induced current will flow through the wire ring in a clockwise direction.
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correct form of question
A circular metal ring is situated above a long straight wire, as shown in the figure. The straight wire has a current flowing to the right, and the current is increasing in time at a constant rate. Which statement is true?
a. There is no induced current in the wirering.
b. There is an induced current in the wire ring,directed in clockwise orientation.
c. There is an induced current in the wire ring,directed in a counterclockwise orientation
Which device makes use of Pascal's principle to turn a small amount of force into a large amount of force?
A. Bourdon gages
B. Hydraulic press
C. Archimedes screw
D. Barometer
The device that makes use of Pascal's principle to turn a small amount of force into a large amount of force is the hydraulic press (option B).
What is hydraulic press?Pascal's principle states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.
One of the technological applications of Pascal’s principle is found in a hydraulic system, which is an enclosed fluid system used to exert forces.
The hydraulic pressure is a device that makes use of Pascal's principle to turn a small amount of force into a large amount of force.
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Heating the metal Imagine that, in lab, you record the mass of a piece of metal, mmetal, as mstal 45.00 g 3어 metal 5. In the next step of the lab (as shown in the animation to the left) you heat up the piece of metal. Play the animation, and record the metal's highest temperature, Tmetal Number metal Hot Plate Reset Begin
Heating up a piece of metal involves adding thermal energy to the metal, which causes its temperature to rise. The metal's highest temperature, Tmetal, is dependent on various factors such as the amount of thermal energy added, the specific heat capacity of the metal, and its mass.
When a metal is heated, the kinetic energy of its particles increases, causing the particles to vibrate and move more quickly. This increase in energy causes the metal to expand slightly, which can be observed as a change in its dimensions. The amount of expansion that occurs is dependent on the coefficient of thermal expansion of the metal.
In addition to expansion, heating a metal can also cause it to change its physical properties. For example, some metals become more malleable when heated, which means they can be easily shaped or molded. On the other hand, some metals become brittle and may crack or break when exposed to high temperatures.
To determine the metal's highest temperature, it is important to use a reliable temperature measuring device such as a thermometer or a thermocouple. Once the metal reaches its highest temperature, it may be cooled down using various methods such as air cooling or water cooling.
Overall, heating up a piece of metal involves adding thermal energy to the metal, which causes its temperature to rise. The metal's highest temperature, Tmetal, is dependent on various factors such as the amount of thermal energy added, the specific heat capacity of the metal, and its mass.
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when two waves with equal and opposite amplitude interfere what will the resulting amplitude measure
When two waves with equal and opposite amplitude interfere, the resulting amplitude will be zero.
This is known as destructive interference. When two waves with equal amplitude but opposite phase (i.e., one wave is at its peak while the other is at its trough) meet at the same point in space, their individual amplitudes will cancel each other out, resulting in a total amplitude of zero. This can occur when waves are perfectly out of phase with each other, meaning that the crest of one wave meets the trough of the other wave. In this scenario, the amplitude of the resulting wave will be the difference between the amplitudes of the two original waves. However, when the waves have equal and opposite amplitudes, they will completely cancel each other out and the resulting amplitude will be zero. This is an important concept in wave theory and has practical applications in fields such as acoustics and optics.
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Why does knowing the velocity of a cloud in the disk of the milky way help astronomers figure out how far away it is?
Knowing the velocity of a cloud in the disk of the Milky Way helps astronomers figure out how far away it is because of a principle called the Doppler effect.
The Doppler effect is the change in the frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. When an object, such as a cloud of gas, is moving away from an observer, the wavelength of light it emits appears longer, or red-shifted. Conversely, when an object is moving towards an observer, the wavelength of light it emits appears shorter, or blue-shifted.
By measuring the Doppler shift of the light emitted by a cloud in the disk of the Milky Way, astronomers can determine whether it is moving towards or away from us. If they know the cloud's velocity and can measure the Doppler shift, they can calculate how far away the cloud is using the Doppler equation. This allows astronomers to map out the structure of the Milky Way and better understand the movements of objects within it.
In conclusion, knowing the velocity of a cloud in the disk of the Milky Way helps astronomers figure out how far away it is through the use of the Doppler effect, which allows them to measure the shift in light wavelength and calculate distance.
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is it a b c d i think it is b but im not to sure
Answer:
D
Explanation:
the answer is D
The spring constant of a quantum harmonic oscillator in a potential well is 7.65 N/m. Determine the wavelength (in nm) of light the electron will emit as it jumps from the n = 5 to n = 3 state.
The result will give you the wavelength in meters; multiply by 10^9 to convert it to nanometers.
To calculate the wavelength of light emitted when an electron jumps from n=5 to n=3 in a quantum harmonic oscillator, we can use the energy difference between these two states and then apply the Planck-Einstein relation. The energy of a quantum harmonic oscillator is given by:
E_n = (n + 1/2)hf, where n is the energy level, h is Planck's constant (6.63 x 10^(-34) Js), and f is the frequency.
Since we are given the spring constant (k) instead of frequency (f), we can use the relation between spring constant and angular frequency (ω): ω = sqrt(k/m), where m is the mass of the electron (9.11 x 10^(-31) kg). Angular frequency and frequency are related by: ω = 2πf, so we can substitute f = ω/(2π) into the energy equation.
First, find ω = sqrt(7.65 N/m / 9.11 x 10^(-31) kg) and then f = ω/(2π). Calculate the energy difference between n=5 and n=3 states: ΔE = E_5 - E_3. Then use the Planck-Einstein relation:
ΔE = hc/λ, where c is the speed of light (3 x 10^8 m/s) and λ is the wavelength.
Solve for λ: λ = hc/ΔE. The result will give you the wavelength in meters; multiply by 10^9 to convert it to nanometers.
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What is a dipole? when solving a dipole problem with a distant point in space, what is the equation used?Also what is the equation for dipole moment?
A dipole refers to a pair of electric charges or poles, with opposite charges or polarities, separated by a distance.
In physics, a dipole is a term used to describe the separation of electrical charges within a molecule or compound.
When solving a dipole problem with a distant point in space, the equation used is the inverse square law. This law states that the force between two charges is proportional to the inverse square of the distance between them.
The equation for dipole moment is μ = q x d, where μ is the dipole moment, q is the magnitude of the charge, and d is the distance between the charges. The dipole moment is a vector quantity that points from the negative charge towards the positive charge. It measures the strength of the dipole and is expressed in units of Coulomb-meters (C m).
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a rogue planet or planetary mass objects that is not in orbit around any particular star
A rogue planet or planetary mass object is a celestial body that is not gravitationally bound to any particular star and does not orbit around it.
These objects can either be ejected from their original star system or may have formed independently. Due to their lack of a central star, rogue planets can be difficult to detect and are often discovered through their gravitational effects on other nearby objects. Despite their isolated existence, these rogue planets can still have their own moons and even support life, depending on factors such as their size, composition, and distance from any potential heat source.
A rogue planet, also known as a planetary-mass object, is a celestial body that does not orbit around any particular star. These objects have masses similar to planets but are not gravitationally bound to a star, thus making them "rogue" in nature as they freely move through space.
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two vectors 6N and 8N respectively are inclined at angle 30 degrees to each other. find the magnitude of their resultant vector and the direction of their resultant vector
The direction of the resultant vector is approximately 19 degrees from the 6 N vector and 26 degrees from the 8 N vector.
What is Vector?
In physics, a vector is a mathematical quantity that has both magnitude and direction. It is represented by an arrow, where the length of the arrow represents the magnitude of the vector and the direction of the arrow represents the direction of the vector. Vectors are used to represent physical quantities such as velocity, acceleration, force, and displacement, among others.
where c is the magnitude of the resultant vector, a and b are the magnitudes of the given vectors, and C is the angle between them.
In this case, a = 6 N, b = 8 N, and C = 30 degrees. Substituting these values into the equation, we get:
So the magnitude of the resultant vector is approximately 4.1 N.
To find the direction of the resultant vector, we can use the law of sines:
sin(A)/a = sin(B)/b = sin(C)/c
where A and B are the angles between the resultant vector and the given vectors.
In this case, we can choose A to be the angle between the 6 N vector and the resultant vector, and B to be the angle between the 8 N vector and the resultant vector. We already know that C = 30 degrees and c ≈ 4.1 N. Substituting these values into the equation, we get:
sin(A)/6 = sin(30)/4.1
sin(A) ≈ 0.325
A ≈ [tex]sin^{-1(0.325)}[/tex] ≈ 19 degrees
sin(B)/8 = sin(30)/4.1
sin(B) ≈ 0.433
B ≈ sin^-1(0.433) ≈ 26 degrees
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If the wavelength of a set of waves is 20 feet long, how deep is the wave base?
If the wavelength of the waves is 20 feet long, the depth of the wave base would be approximately 10 feet deep.
In shallow water, the depth of the wave base is affected by the shape and slope of the seafloor.
If the seafloor is gradually sloping, the wave base will be deeper than if the seafloor is steeply sloping.
Additionally, as waves approach the shore, the decrease in water depth causes the wave speed to decrease and the wavelength to shorten, which in turn affects the depth of the wave base.
In such cases, the depth of the wave base can be calculated using mathematical formulas that take into account the depth of the water and the properties of the waves.
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A dart gun vertically launches a 25g dart 50 cm high. Determine the minimum energy stored in the spring when the dart gun was loaded.
what is the far point in m of a person whose eyes have a relaxed power of 55.0 d? (assume a lens-to-retina distance of 2.00 cm.)
The far point of a person with relaxed eye power of 55.0 d and a lens-to-retina distance of 2.00 cm is 0.03818 m, or approximately 38.18 cm.
The far point of a person is the farthest distance from which they can see objects clearly without any accommodation, which is the process by which the eye changes its focus to see objects at different distances.
The formula to calculate the far point is:
Far point = 1 / (relaxed power of the eye in diopters) + distance from lens to retina in meters
First, we need to convert the distance from the lens to the retina from centimeters to meters:
distance from lens to retina = 2.00 cm = 0.02 m
Now we can substitute the given values into the formula and solve for the far point:
Far point = 1 / (55.0 d) + 0.02 m
Far point = 0.01818 m + 0.02 m
Far point = 0.03818 m
Therefore, the far point of a person with relaxed eye power of 55.0 d and a lens-to-retina distance of 2.00 cm is 0.03818 m, or approximately 38.18 cm.
This means that this person can see objects clearly from a distance of 38.18 cm or farther without any accommodation.
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An oscillating object takes 0.10 ss to complete one cycle; that is, its period is 0.10 ss. What is its frequency fff?
Express your answer in hertz.
An oscillating object takes 0.10 ss to complete one cycle which means, its period is 0.10 ss. We have to find its frequency and express the answer in hertz.
The terms "oscillating," "cycle," "period," and "frequency" are defined as follows:
1. Oscillating: Refers to an object that moves back and forth in a regular pattern.
2. Cycle: One complete oscillation, starting from the initial position, going through the entire motion, and returning to the initial position.
3. Period (T): The time taken to complete one cycle.
4. Frequency (f): The number of cycles completed per unit of time, usually measured in hertz (Hz).
To find the frequency (f), you can use the formula:
f = 1/T
The period (T) is 0.10 seconds, you can plug it into the formula:
f = 1/0.10
=>f = 10 Hz
The frequency of the oscillating object is 10 hertz.
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What three-letter basic unit of area in the metric system is equal to 100 square meters, or approximately 0.02471 acres?
The three-letter basic unit of area in the metric system that is equal to [tex]100[/tex] 100 square meters is "are" (symbol: "a").one hectare is approximately equal to [tex]2.471[/tex] 2.471 acres.
What three-letter basic unit of area in the metric system is equal to 100 square meters, or approximately 0.02471 acres?
One hectare is equal to[tex]100[/tex] 100 acres or[tex]10,000[/tex] 10,000 square meters. Therefore, one hectare is approximately equal to [tex]2.471[/tex] 2.471 acres.
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if you wanted to store 10.0 j of potential energy in this spring, what would be its total length? assume that it continues to obey hooke's law. express your answer in centimeters to three significant figures. if there is more than one answer, separate them by a comma.
The total length of the spring when 10.0 J of potential energy is stored in it , as we calculated, is 0.2 meters.
The potential energy stored in a spring is given by the equation:
U = (1/2)[tex]kx^2[/tex]
where U is the potential energy, k is the spring constant, and x is the displacement of the spring from its equilibrium position.
We can rearrange this equation to solve for x:
x = [tex]\sqrt{((2U) / k)[/tex]
Substituting the given values, we get:
x = [tex]\sqrt{((2 * 10.0 J) / 500 N/m)[/tex]
x = [tex]\sqrt{(0.04 m^2)[/tex]
x = 0.2 m
Therefore, the total length of the spring when 10.0 J of potential energy is stored in it is 0.2 meters.
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--The complete Question is, A spring has a spring constant of 500 N/m. If you wanted to store 10.0 J of potential energy in this spring, what would be its total length? Assume that it continues to obey Hooke's Law. --
help.. Given
,
,
, and
. Determine the magnitude of
.
Given:
[tex]||\vec u||=8, \ \theta_{\vec {u}}=55 \textdegree[/tex]
[tex]||\vec v||=6, \ \theta_{\vec {v}}=40 \textdegree[/tex]
Find:
[tex]||\vec u + \vec v || = \ ??[/tex]
In order to complete this problem we first have split each vector given in magnitude-angle form into its components.
[tex]\vec u = < \vec u_x, \vec u_y > = < ||\vec u||cos \theta_{\vec {u}},||\vec u||sin \theta_{\vec {u}} >[/tex]
[tex]\vec v = < \vec v_x, \vec v_y > = < ||\vec v||cos \theta_{\vec {v}},||\vec v||sin \theta_{\vec {v}} >[/tex]
For vector u:
[tex]\vec u = < (8)cos(55\textdegree),(8)sin (55\textdegree) > \Longrightarrow \boxed{\vec u = < 4.589,6.553 > }[/tex]
For vector v:
[tex]\vec v = < (6)cos(40\textdegree),(6)sin (40\textdegree) > \Longrightarrow \boxed{\vec v = < 4.596,3.857 > }[/tex]
Now we have vectors u and v split into their x and y components. We can now add these vectors.
[tex]\vec u + \vec v = < \vec{u_x}+\vec{v_x},\vec{u_y}+\vec{v_y} >[/tex]
[tex]\Longrightarrow \vec u + \vec v = < 4.589+4.596,6.553+3.857 > \Longrightarrow \boxed{\vec u + \vec v = < 9.185,10.41 > }[/tex]
The question asks for the magnitude of vectors u plus v. So,
[tex]||\vec u + \vec v|| = \sqrt{((\vec u + \vec v)_x)^2+((\vec u + \vec v)_y)^2}[/tex] and the angle, [tex]\theta=tan^{-1}(\frac{(\vec u + \vec v)_y}{(\vec u + \vec v)_x} )[/tex]
[tex]\Longrightarrow ||\vec u + \vec v|| = \sqrt{(9.185)^2+(10.41)^2} \Longrightarrow \boxed{ ||\vec u + \vec v||=13.883}[/tex]
[tex]\Longrightarrow\theta=tan^{-1}(\frac{10.41}{9.185} ) \Longrightarrow\boxed{\theta=48.577 \textdegree}[/tex]
Thus, [tex]\boxed{ ||\vec u + \vec v||=13.883 \ at \ {\theta=48.577 \textdegree}} \therefore Sol.[/tex]
Particle Physics: There are six quarks. The up and down quarks make up well known particles like the proton and neutron. Name the four other quarks. While there is truth and beauty in particle physics, there is not in this answer?
The study of quarks and their interactions is an important area of research in particle physics, as it can shed light on the fundamental nature of matter and the universe.
In addition to up and down quarks, there are four other quarks in the standard model of particle physics. These are the charm, strange, top, and bottom quarks.
The strange quark was first discovered in the 1960s and was named for its unusual behavior. It has a mass about 80 times that of the up quark and is unstable, decaying quickly into lighter particles. The charm quark was discovered in the 1970s and has a mass about twice that of the strange quark. The top quark is the heaviest of all the quarks, with a mass about 100 times that of the up quark. It was discovered in the 1990s and is produced only in high-energy particle collisions. Finally, the bottom quark has a mass about four times that of the up quark and was discovered in the 1970s.
Quarks are fundamental particles and are the building blocks of protons and neutrons, which in turn make up the nuclei of atoms. They interact through the strong force, which is mediated by particles called gluons. The study of quarks and their interactions is an important area of research in particle physics, as it can shed light on the fundamental nature of matter and the universe.
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The earth is negatively charged, carrying 500,000 C of electric charge. This results in a 300 kV potential differencebetween the earth and the positively-charged ionosphere. What is the capacitance of the earth-ionospheresystem?
Since capacitance is a scalar quantity and cannot be negative, the capacitance of the Earth-ionosphere system is 1.67 Farads
The Earth is negatively charged, carrying a total electric charge of -500,000 Coulombs (C). There is a potential difference of 300,000 Volts (300 kV) between the Earth and the positively charged ionosphere.
In order to determine the capacitance of the Earth-ionosphere system, we will use the formula for capacitance:
C = Q/V
where C represents capacitance, Q is the charge, and V is the potential difference. Plugging in the given values:
C = (-500,000 C) / (300,000 V)
C = -1.67 Farads
. Keep in mind that this is a simplified model of the Earth-ionosphere system, but it provides a useful estimation of its capacitance.
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which of the following properties is absolute and independent of frame of reference? the time for a particular kind of subatomic particle to decay the mass of a particular kind of subatomic particle the speed of light the size of earth c and d
The property that is absolute and independent of the frame of reference is the speed of light. The correct option is c.
This is known as a fundamental constant of nature and is denoted by the letter "c." The speed of light is the same for all observers, regardless of their relative motion, and is approximately 299,792,458 meters per second.
The other properties listed, such as the time for a subatomic particle to decay, the mass of a subatomic particle, and the size of Earth, are not absolute and independent of the frame of reference. These properties can vary depending on the observer's relative motion or position in space.
For example, the time for a subatomic particle to decay may appear longer or shorter depending on the observer's relative velocity. Similarly, the mass of a subatomic particle may appear to increase as its velocity approaches the speed of light.
In summary, the speed of light is the only property that is constant and independent of the observer's frame of reference. This property plays a crucial role in the theory of relativity and has far-reaching implications for our understanding of the universe.
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a block of mass m , with its center of mass at height h , starts from rest and slides down a frictionless semi-circular track as shown. when it reaches the lowest point of the track, it collides elastically with a second block of mass m . what is the maximum height achieved by the center of mass of the second block after the collision?
The maximum height achieved by the center of mass of the second block after the collision is equal to h.
The initial total mechanical energy of the system is equal to the potential energy at the top of the track, which is mgh, where m is the mass of the first block, and h is the height of its center of mass above the lowest point of the track.
As the first block slides down the track, its potential energy is converted into kinetic energy, and the total mechanical energy of the system remains constant. At the bottom of the track, the first block collides elastically with the second block, which is initially at rest.
After the collision, the first block and the second block move together as a single body with a mass of 2m.
The maximum height achieved by the center of mass of this body is equal to h, which is the same as the height of the center of mass of the first block at the top of the track. This is because the collision was elastic, so the kinetic energy of the first block was transferred to the second block, but the total mechanical energy of the system was conserved.
Therefore the maximum height achieved by the center of mass of the system after the collision is the same as the maximum height of the first block before the collision.
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