The time taken for one revolution of a rigid rotor to cross the nucleus is 6,240,000×10⁻¹⁵ sec .
Microwave rotational spectroscopy utilizes microwave radiation to quantify the energies of rotational advances for atoms in the gas stage. It achieves this through the communication of the electric dipole snapshot of the particles with the electromagnetic field of the astonishing microwave photon.
To test the unadulterated rotational advances for particles, researchers use microwave rotational spectroscopy. This spectroscopy uses photons in the microwave reach to cause changes between the quantum rotational energy levels of a gas particle.
We know that time taken to complete one revolution of a rigid rotor is
given by the formula J×(J+1)× B × h
where J is rotational quantum number,
B or I is rotational constant
and h or A is value of atomic mass of the nucleus.
So, on putting we get
=>t=2×(2+1)×5000×208
=>t=2×3×5000×208
=>t=6,240,000fm-sec or
=>t=6,240,000×10⁻¹⁵ sec
Hence, required time is 6.240,000×10⁻¹⁵ sec .
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What is transferred by a sound wave between particles?; What happens to sound waves as they get closer?; When the air particles in a sound wave are closer together it is called a?; What happens when sound waves compress?
Energy is transferred by a sound wave between particles, when sound waves get closer then frequency of wave is high.
Pulses caused by brief disturbances of the medium Wavepackets: like harmonic waves, but with finite extent. We usually focus on harmonic waves that extend forever. They are useful because they have simple math, and accurately describe a lot of wave behavior.
A harmonic wave moving in the positive x direction can be described by the equation y(x,t) = A cos(kx - wt).
Sound waves or electromagnetic waves that are created from a point source are spherical waves, i.e., they move radially from the source in all directions. These waves can be represented by circular arcs. These arcs are surfaces of constant phase (e.g., crests)
In general for spherical waves the intensity will fall off as 1/r2 i.e., the amplitude falls off as 1/r. We have all sorts of waveforms, but thanks to superposition, if we find a nice simple set of solutions, easy to analyze, we can write the more complicated solutions as superpositions of the simple ones.
It is a mathematical fact that any reasonable waveform can be represented as a superposition of harmonic waves. This is Fourier analysis, which many of you will learn for other applications.
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2.00 mol of the helium is confined to a 2.00-L container at a pressure of 11.0 atm. The atomic mass of helium is 4.00 u, and the conversion between u and kg is 1 u = 1.661 ××10−27 kg. 1)Calculate vrms
use P*V = n*R*T
==> T = P*V/(n*R)
= 11*1.013*10^5*2*10^-3/(2*8.314)
= 134 k
we know,
v_rms = sqrt(3*k*T/m)
v_rms = sqrt(3*1.38*10^-23*134/(4*1.66*10^-27))
= 914 m/s
The root-mean square (RMS) velocity is the cost of the square root of the sum of the squares of the stacking speed values divided via the variety of values. The RMS pace is that of a wave via sub-floor layers of different c programming language velocities along a selected ray route.
The rms speed is at once proportional to the square root of temperature and inversely proportional to the rectangular root of molar mass. for this reason quadrupling the temperature of a given gas doubles the rms pace of the molecules.
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[tex]V_{rms} = 914 m/s[/tex]
Use P*V = n*R*T
=> T = P*V/(n*R)
= 11*1.013*10^5*2*10^-3/(2*8.314 )
= 134 k
we know,
[tex]V_{rms} =[/tex] sqrt(3*k*T/m)
[tex]V_{rms} =[/tex] sqrt(3*1.38*10^-23*134/(4 *1.66*1 ^-27))
= 914 m/s
Helium is a chemical element with symbol He and atomic number.
It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first gas in the noble gas group of the periodic table.
Its boiling point and melting point are the lowest of all the elements. It is the second lightest and second most abundant element in the observable universe (hydrogen is the lightest and most abundant).
Helium is used as a coolant for the Large Hadron Collider (LHC) and superconducting magnets in MRI scanners and NMR spectrometers. It is also used to cool satellite instruments and is used to cool the liquid oxygen and hydrogen that power the Apollo spacecraft.
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Potential energy arises when _- O we consider only conservative forcesc the system is isolated thermal energy can be neglected O the work from external forces is zero O interaction are included within the system
The correct option is (a). Potential energy arises when we consider only conservative forces.
Indeed, potential energy has a conservative nature. Conservative forces in physics are ones where the work performed by the force on an object traveling along a straight line depends only on the object's beginning and final positions, and not on the path traveled. Conservative forces and potential energy have a close relationship.
A force is said to be conservative if it moves an object between two points without regard for the direction it travels. Potential energy is the energy related to the placement or arrangement of an object within a force field.
Hence, the correct option is (a). Potential energy arises when we consider only conservative forces.
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#Complete question is:
(a) We consider only conservative forces
(b) The system is isolated
(c) The thermal energy can be neglected
(d) the work from external forces is zero
(e) Interactions are included within the system
gelified acetate-based water-in-salt electrolyte stabilizing hexacyanoferrate cathode for aqueous potassium-ion batteries
In recent years, gelified acetate-based water-in-salt electrolyte stabilising hexacyanoferrate cathode for aqueous potassium-ion batteries has gained popularity.
Here, water activity in "Water-in-salt" electrolytes (WiSE) based on potassium acetate (KAc) is investigated using Raman and classical molecular dynamics (MD), demonstrating the significantly reduced water activity of these WiSEs because water can be efficiently coordinated by both the acetate anion and the potassium cation. It is discovered that the overall molecular arrangement resembles the "sponge-like" shape seen in several ionic liquids. According to comprehensive electrochemical, scanning electronic microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) study, such WiSE can also be compatible with Al current collectors with appropriately adjusted composition. However, due to the limited stability of the cathode material in the alkaline environment, the use of inexpensive potassium manganese hexacyanoferrate (KMHCF) in combination with these electrolytes is hampered by poor cycling performance.
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The reaction that converts a saturated dicarboxylic acid into an unsaturated one
Spell out the full name of the enzyme.
The reaction that converts a saturated carboxylic acid into an unsaturated one is the succinate dehydrogenase enzyme.
What is acid?Any material that tastes sour when dissolved in water is an acid. It also alters the color of some indicators (such as reddening blue litmus paper), reacts with some metals (such as iron) to release hydrogen, combines with bases to create salts, and facilitates a number of chemical activities (acid catalysis).
Sulfuric, nitric, hydrochloric, and phosphoric acids, as well as organic chemicals, belong to the carboxylic acid, ammonium sulfate, and phenol groups, are examples of acids.
Acids are also inorganic entities known as alkaline solutions. These chemicals have one or more hydrogen atoms, which are discharged as positively charged ions in solution.
The full name of the enzyme is succinate dehydrogenase enzyme.
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a line of dominos is knocked down. which explanation is true
An increase in acceleration led to an increase in force, as demonstrated by the falling of a line of dominos.
Based on the idea of force acting on an object, this.
Currently, the formula for force is known as;
Mass times acceleration equals force
Now, mass and acceleration are the input factors that determine whether the Force will rise or decrease as the output.
Now that the line of dominoes has fallen, it indicates that the force was so great that the dominoes were powerless to withstand it.
Now, this output which is the force became so great as a result of the rise in acceleration of the motion that initiated its movement.
Additionally, the force and acceleration are in direct proportion!
Therefore, we may conclude that a rise in acceleration led to a rise in force.
Correct question :
If a line of dominos is knocked down, which statement can be concluded about the dominos?
An increase in acceleration caused an increase in force.
An increase in force caused a decrease in acceleration.
An increase in acceleration caused a decrease in force.
An increase in force caused an increase in acceleration.
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Which of the following does not provide strong evidence for the Big Bang theory?
a) Observations of the cosmic microwave background
b) Observations of the amount of hydrogen in the universe
c) Observations of the amount of oxygen in the universe
d) Observations of the ratio of helium to hydrogen in the universe
b) Observations of the amount of hydrogen in the universe
The correct option is b) Observations of the amount of hydrogen in the universe.
What is big bang theory?
The Big Bang Theory is the most popular theory about how the cosmos came into being. Simply expressed, it claims the universe as we know it began with an unimaginably hot and dense single point that expanded and contracted over the course of the following 13.7 billion years, first at incomprehensible speeds and then at a more palpable rate, to the still-expanding cosmos that we know today.
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Part A
Give a combination of four quantum numbers that could be assigned to an electron occupying a 5p orbital.
Express your answers using one significant figure. Enter your answers separated by commas.
Part B
Do the same for an electron occupying a 6d orbital.
Express your answers using one significant figure. Enter your answers separated by commas.
Part A
The combination of 5 P orbital is :
n=5,l=1,ml=−1,ms=+[tex]\frac{1}{2}[/tex]
Part B
n = 6
l = 2
ml = 2 or 1 or 0 or -1 or -2
ms = +1/2 or -1/2
A total of four quantum numbers are used to fully describe the motion and orbit of each electron in an atom. The combination of all quantum numbers of all electrons in an atom is described by a wavefunction corresponding to the Schrödinger equation. Each electron in an atom has a unique set of quantum numbers. According to the Pauli exclusion principle, no two electrons can have the same combination of four quantum numbers. Quantum numbers are important because they can be used to determine the electron configuration of atoms and the putative positions of electrons in atoms. Quantum numbers are also used to understand other properties of atoms such as: B. Ionization energy and atomic radius.
Atoms have four quantum numbers. They are the principal quantum number (n), the orbital angular momentum quantum number (l), the magnetic quantum number (ml), and the electron spin quantum number (ms). The principal quantum number n describes the energy of an electron and its most probable distance from the nucleus. In other words, it refers to the size and energy level of the orbital in which the electron is placed. The number of subshells or l describes the shape of the orbitals. It can also be used to determine the number of angular nodes. The magnetic quantum number ml represents the energy level in the subshell and ms represents the electron spin. This is either upwards or downwards.
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7.33 moles of a diatomic gas are at a temperature of 317 K. What is the internal energy of the gas?
Thank you!
48296.23 Joule is the internal energy of the gas
What is the internal energy?In thermodynamics, internal energy is a characteristic or state function that characterizes a substance's energy in the absence of capillary effects and the impacts of external magnetic, electric, and other fields.
Given that,
No. of moles = 7.33 moles
temperature = 317 K
diatomic gas
As we know,
U = n × [tex]C_v[/tex]×T
U = internal energy
n = no. of moles
[tex]C_v[/tex] = specific heat
[tex]C_v[/tex] = (f/2) ×R = (degree of freedom of gas / 2) × R
For a diatomic gas, f = 5
T = temperature
Now, U = (f/2) × R × n ×T
or, U = (5/2) × 8.314 × 7.33 × 317
or, U = 48296.23 Joule.
Thus, 48296.23 Joule is the internal energy of the gas
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a lunar eclipse occurs when group of answer choices the earth lies directly between the sun and the moon the sun lies directly between the earth and the sun the moon lies directly between the sun and the earth
A lunar eclipse occurs when the earth is directly between the sun and the moon, thus, its shadow creates a lunar eclipse. Correct answer: letter A.
A lunar eclipse occurs when the Earth's shadow is cast on the surface of the Moon. This can only happen if the Sun, Earth, and Moon are all aligned in a straight line. In this configuration, the Earth is directly between the Sun and the Moon, blocking the light from the Sun and casting a shadow onto the Moon.
What is a lunar eclipse?Is an astronomical event that occurs when the Moon passes directly behind Earth and into its shadow. During a lunar eclipse, the Moon will appear dark as it is illuminated by only the faint, red-orange light of the sun scattered by Earth's atmosphere.
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A 2.3 kg , 20-cm-diameter turntable rotates at 150rpm on frictionless bearings. Two 550 g blocks fall from above, hit the turntable simultaneously at opposite ends of a diameter, and stick.What is the turntable's angular velocity, in rpm, just after this event
The turntable's angular velocity, in rpm, just after this event is ω(f) = 78.40 rpm
I'll suppose that the turntable is a solid disc with a moment of inertia of 0.5Mr2 and that the blocks stick out from the edge of the turntable, each 10cm (0.10 m) from the turntable's centre. This is the conservation equation:
0.5Mr²ω(i) = 0.5Mr²ω(f) + m₁r²ω(f) + m₂r²ω(f) ----(but m₁ = m₂ = m)
Mr²ω(i) = Mr²ω(f) + 4mr²ω(f)
Mr²ω(i) = ω(f)r²(M + 4m)
ω(f) = Mω(i) / (M + 4m)
ω(f) = (2.3kg)(150 rpm) / [2.3kg + (4 x 0.55 kg)]
The turntable's angular velocity, in rpm, just after this event is ω(f) = 78.40 rpm
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Why does a light ray bend when it travels from the air to water?
Answer: When the light hits the water, it causes the light to slow down, and when it does this, the light changes directions.
Explanation:
a free-falling object has a speed of 30 m/s at one instant. exactly 2 seconds later its speed will be
The velocity of the freely falling body after the time 2 second is found as 49.6 m/s.
Explain the term acceleration due to gravity?Gravitational acceleration is the rate at which the speed of a body falling freely increases. Gravitational acceleration is measured in SI units of m/s², m/s², m/s².A body is considered to be in freefall when it only moves in relation to the Earth's gravity. An external force exerted on the ball will cause its motion to accelerate. Gravitational acceleration is another name for this rate of free fall.For the given question-
The freely falling body has the speed at an instant as u = 30 m/s.
Acceleration due to gravity g = 9.8 m/s².
After time t = 2 sec, the final velocity v m/s.
Using equation of motion,
v = u + gt
v = 30 + 9.8 x 2
v = 49.6 m/s.
Thus, the velocity of the freely falling body after the time 2 second is found as 49.6 m/s.
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briefly outline the eight trace minerals reviewed in this week's readings, highlighting their primary function in the body and major food sources.
Answer:
college money
Explanation:
when light strikes a window pane some rays will be reflected back and forth in between the two glass surfaces. why do these reflected rays not produce visible colored interference fringes?
Yes, and the colors you see will now be the colors your eye perceives when you see the wavelengths producing the interference patterns.
In physics, the wavelengths is the length over which a periodic wave repeats or its spatial period. It is the separation between neighboring wave points that correspond to the same phase, such as two adjacent crests, troughs, or zero crossings. It is a property of both traveling waves and standing waves as well as other spatial wave patterns. The spatial frequency is the wavelength's reciprocal. The Greek letter lambda (), which represents wavelength, is frequently used. When describing modulated waves, their sinusoidal envelopes, or waves created by the interference of several sinusoids, the term wavelength is also occasionally used.
Wavelength is inversely related to frequency for a sinusoidal wave flowing at a constant speed.
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The reflected rays of light do not produce visible colored interference fringes in a window because the glass structure of a window pane prevent.
In the case of the window pane, it is true that the light is still reflected on the front and rear surface of the glass. the reflecting medium need to have a thickness that the that is comparable to the wavelength of light. windows are simply too thick. Due to the structure of glass, No Interference. In the case of thin film both reflected rays belong to the same waveform. light striking a film is partially reflected and partially refracted at the top surface. the refracted ray is partially reflected at the bottom.
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you have a horizontal grindstone (a disk) that is 87 kg, has a 0.35 m radius, is turning at 95 rpm (in the positive direction), and you press a steel axe against the edge with a force of 15 n in the radial direction. (a) Assuming the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone. (b) How many turns will the stone make before coming to rest?
The angular acceleration is 0.19 and the number of turns is 41.07 revolutions.
m = 87 kg be the mass of the grindstone,
r = 0.35 m be the radius of the grindstone,
I = mr²/2 be the grindstone's moment of inertia,
ω = 95 revolution/min = 95 2π/60s = 9.9 s-1 be initial angular velocity,
F = 15 N be the force pressing radially,
f = 0.2 be the coefficient of friction,
α (unknown) be the grindstones angular acceleration.
a)The tangential force slowing the grindstone is
fF
Its torque is
rfF
By Newton's Second Law
rfF = Iα
Therefore
α = rfF/I = 2rfF/mr² = 2fF/mr
Substituting actual numbers
α = 2×0.2×15/(87×0.35) = 0.19 s-2
Note that the above is the absolute value of the acceleration.
Depending on which direction is considered positive or negative,
the answer may need to be negated.
b)
Let
t be the time it takes the grindstone to come to rest,
θ be the total angle by which the grindstone will turn before coming to rest.We have the following identities, which follow from the definition of acceleration:
ω = αt
θ = αt²/2
From the first
t = ω/α
Plug into the second
θ = α(ω/α)²/2 = ω²/2α
Substitute actual numbers
θ = 9.9²/2×0.19 = 257.92
The above result is in radians.
Since the result is supposed to be given in revolutions,
we need to divide by the number of radians per revolutions:
257.92/2π = 41.07 revolutions
Therefore, the angular acceleration is 0.19 and the number of turns is 41.07 revolutions.
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basilisk lizards can run across the top of a water surface (fig. 9-52). with each step, a lizard first slaps its foot against the water and then pushes it down into the water rapidly enough to form an air cavity around the top of the foot. to avoid having to pull the foot back up against water drag in order to complete the step, the lizard withdraws the foot before the water can flow into the air cavity. if the lizard is not to sink, the average upward impulse on the lizard during this full action of slap, downward push, and withdrawal must match the downward impulse due to the gravitational force. suppose the mass of a basilisk lizard is 90.0 g, the mass of each foot is 2.53 g, the speed of a foot as it slaps the water is 1.08 m/s, and the time for a single step is 0.417 s. (a) what is the magnitude of the impulse on the lizard during the slap? (assume this impulse is directly upward.) (b) during the 0.417 s duration of a step, what is the downward impulse on the lizard due to the gravitational force? (clearly the push, not the slap, provides the primary support for the lizard.)
The magnitude of impulse acting directly upwards during the slap is -0.00273 N.s.
The magnitude of the impulse that is downward on the lizard due to the gravitational force is 0.375 kg.m/s.
Given that, mass of the basilisk lizard = 90 g = 90/1000 kg = 0.09 kg
Mass of each foot = 2.53 g = 0.00253 kg
Vf = 0
Vi = 1.08 m/s
Time taken for a single step is 0.417 s
I = Δp = Mf * (Vf - Vi ) = 0.00253* (0 - 1.08) = -0.00273 N.s
On each step, the basilisk lizard must provide an upward force that counters its weight which is equal to W= mg.
We know the formula for impulse acting downwards is, I = F Δt
It can also be written as I = W Δt = Ml* g Δt
Substituting the values in the above formula,
Ml*g Δt = 0.09* 10* 0.417 = 0.375 kgm/s
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What sort of energy do machines use to do work?; What is a machine that increases force?; What's a machine that increases speed?; What is a change caused by kinetic energy as well as a change that involves potential energy?
Mechanical energy is the energy that machines use to do work and levers are a machine that increases force sleever that increases speed.
There are two types of hydroelectric power projects is conventional and pumped storage. In a conventional hydroelectric facility, water passes from the intake and out the outflow one time.
In a pumped storage facility, water may pass through the turbine multiple times. The operation of a hydropower project, like any power plant, may generate solid and industrial wastes.
Hydroelectric power generation decommissioning includes waste management of any reservoir sediments, especially where power plant placement is downstream from significant industrial or natural environmental hazard sources.
In Hydroelectric power generation, kinetic energy of the water is converted into the mechanical energy of the turbine which further converted into the electrical energy.
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when we see x-rays from an accretion disk in a binary system, we can't immediately tell whether the accretion disk surrounds a neutron star or a black hole. suppose we then observe each of the following phenomena in this system. which one would rule out the possibility of a black hole?
When we see x-rays from an accretion disk in a binary system, we can't immediately tell whether the accretion disk surrounds a neutron star or a black hole. suppose we then observe each of the following phenomena in this system. Intense X-rays bursts would rule out the possibility of a black hole.
About accretion diskThis is rotating gas that forms around objects that have a large gravitational force. It can be found around black holes or stars where matter collapses due to gravity to a central object. Accretion disks are structures formed by matter orbiting very large objects. The object is usually a star.
Gravity pulls matter on the disk toward the object it is orbiting. The force of gravity and friction suppresses and raises the temperature of the material to form electromagnetic radiation. The frequency of the radiation depends on the mass of the object being surrounded.
The accretion disks of young stars and protostars form the infrared; The disk surrounding the neutron star and black hole forms X-rays. Research on accretion disks is called discoseismology.
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An 7.80-mF capacitor is connected across an AC source with an rms voltage of 71.0 V oscillating with a frequency of 30.0 Hz. What are the following for this circult? (a) capacitive reactance (b) rms current (c) maximum current
a)The capacitive reactance is 680 ohms.
[tex]X_{c}=1/2\pi fC[/tex]
[tex]X_{c}=1/2\pi *30*7.8*10^{-6}[/tex]
[tex]X_{c}=680\\[/tex]
b)The rms current is 0.10 amperes.
[tex]I_{rms}=V_{rms}/X_{c}[/tex]
[tex]I_{rms}=71/680[/tex]
[tex]I_{rms}=0.10A[/tex]
c)The maximum current in the circuit is 0.147 amperes.
[tex]I_{max}=\sqrt{2} *I_{rms}[/tex]
[tex]I_{max}=\sqrt{2} *0.10[/tex]
[tex]I_{max}=0.147A[/tex]
What is capacitive reactance?
The measure of the opposition to alternating current by the capacitor is called Capacitive Reactance. The unit of Capacitive Reactance is Ohms-like resistance. The symbol of Capacitive Reactance is XC
What is the capacitive reactance formula?
Xc = 1/2πfc
XC is the capacitive reactance, π is a constant with the value of 3.14, f is the frequency, and c is the capacitance.
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an ammonia refrigeration cycle involves the conversion of 0.93 kg of liquid ammonia into vapor every minute at the boiling-point temperature.
The rate at which ammonia absorbs energy, according to the question, is 32166.7 W.
What does physics mean when it refers to temperature?Temperature is a unit used to represent hotness or coolness on any of a range of scales, including F and Celsius. According to temperature, heat energy will naturally move from a hotter (body with a temperature higher) to a colder (body with a lower temperature) (one at a lower temperature).
Briefing:Heat of evaporation (L) is equal to 1369.5*10³ J/kg.
Mass (m) = 1.41 kg
Formula:
Q = m*L = 1.41 * 1369.5*10³
Q = 1.93 * 10⁶ J
Finally, the rate of energy absorption by ammonia is:
Q/t = 1.93 * 10⁶/60
= 32166.7 W
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The complete question is-
10 of 10 An ammonia refrigeration cycle involves the conversion of 1.41 kg of liquid ammonia into vapor every minute at the boiling-point temperature. At what rate does the ammonia absorb energy?
Is a net force of 0 balanced or unbalanced?; What does a net force of 0 N mean?; When the net force acting on an object is not 0 n the forces acting on the object are?; What happens when the net force is 0?
The forces acting on this object are Balanced and the net force is 0 N,
A system is said to be balanced, when the resultant of the forces acting on the system is 0.
If the net force acting on an object is 0 N the forces are balanced or not present.
What is force?
A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
If the net force acting on an object is zero, then there may be no forces at all acting on it. If there ARE any, then they're balanced.
If the net force acting on an object is 0 N the forces are balanced or not present.
Therefore, the resultant force on the system is 0 N
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According to the Bohr model of a hydrogen atom, the frequency of light radiated by an electron moving from an orbit n1 to an orbit n2corresponds to the energy level difference betweenn1 and n2 ofE=E0(1n21?1n22),whereE0=?meZ2e432?2?20?2,and where me is the electron mass, Z is the atomic number, e is the magnitude of the electron charge, ?0 is the permittivity of free space, and ?is Planck's constnt divided by 2?. In the case of hydrogen (Z=1) E0=?13.6eV.Part A: Find the frequency of light f radiated by an electron moving from orbit n1=2 to n2=1 inside of a He+ ion.Part B: In the Bohr model of hydrogen, the radius of the nth orbit is defined asrn=a0n2Z,wherea0=4???2mee2=5.29
9.86*1015 HZ, 2.65*10-11 m, and 40.8 eV of energy were released during the transition from phase 2 to phase 1. In accordance with the hydrogen atom's Bohr model.
A hydrogen atom is an atom belonging to the element hydrogen in chemistry. One positively charged proton and one negatively charged electron are both present in the electrically neutral atom and are held to the nucleus by the Coulomb force.
The energy released during the change from 2 to 1 is given by
E = Eo(1/n^2 - 1/na^2) (2)2(-13.6)(1/2^2-1) = 40.8eV
The frequency is calculated as follows:
f = E/h f = 9.86*1015 HZ
rn = Ao*n2/Z = (5.29*10-11)(1)/2 = 2.65*10-11m is the orbit's radius.
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heteroatoms make a difference in the physical and chemical properties of an organic molecule because___.
Heteroatoms make a difference in the physical and chemical properties of an organic molecule because they substitute extra mass in an organic molecule
• Each heteroatom has its own characteristic chemistry. They substitute extra mass for the hydrocarbon structure. They increase the polarity of the organic molecule.
• Heteroatoms have an intense effect on the reactivity of organic molecules. Hydrocarbons have only a limited range of reactions, and so organic chemistry is often defined as the chemistry of carbon, it is the other elements that make it interesting.
• They are also classified as diatomic, triatomic, or polyatomic molecules depending on the number of atoms present. H2O, NH3, CH4, etc. are examples of heteroatomic molecules.
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The largest telescopes in the world are used to detect:
A. ultraviolet
B. visible light
C. radio waves
D. x-ray
Answer: The largest telescopes in the world are used to detect:
B. visible light
Explanation:
The largest telescopes in the world are primarily used to detect visible light. These telescopes are designed to capture and analyze the light emitted or reflected by celestial objects such as stars, planets, galaxies, and other astronomical phenomena.
Visible light s a part of the electromagnetic spectrum that is visible to the human eye. It consists of different colors, ranging from red to violet, with each color corresponding to a specific wavelength. By studying the visible light emitted or reflected by celestial objects, astronomers can gather information about their composition, temperature, motion, and other properties.
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a 10.0 gram mass is tied to a string. the string is connected to a 500.0 g mass by a string that passes over a pulley. the 10.0 gram mass is suspended over the floor. there is no friction on the table. a. draw a fbd for each mass and of the system
In physics and engineering, a free frame diagram (FBD; also referred to as a force diagram) is a graphical instance used to visualize the applied forces, moments, and ensuing reactions on a frame in a given situation.
A free-body diagram is a sketch of an item of interest with all the surrounding items stripped away and all of the forces acting on the frame shown. The drawing of an unfastened-body diagram is a critical step in the solving of mechanics issues because it helps to visualize all the forces appearing on an unmarried object.
A free-body diagram is a graphic, dematerialized, symbolic representation of the body (structure, element, or segment of an element) wherein all connecting "pieces" have been removed. An FBD is a convenient method to model the structure, structural detail, or phase that is under scrutiny.
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according to present scientific understanding of the milky way's formation, which of the following statements are true?
The true statement is that; "Halo stars formed before disk stars, The protogalactic cloud contained essentially no elements besides hydrogen and helium."
What is a star?We know that a star is a part of the solar system. The solar system is made up of many of the celestial bodies that can be found in the outer space. Some of them are able to produce light while some of the bodies that can be found in the solar system do not produce light.
The milky way is the star galaxy that has been known to govern the earth and it is known to develop at a slower rate than all the other galaxies that we know.
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Missing parts;
According to present scientific understanding of the Milky Way's formation, which of the following statements are true? Select al that apply. Halo stars are stars that are born in the disk and ejected into the halo by gravitational encounters. The galaxy formed from the collapse of a single, giant protogalactic cloud. Disk stars formed before halo stars. Halo stars formed before disk stars. The protogalatic cloud(s) contained essentially no elements besides hydrogen and helium
when the input voltage to this circuit is 0.5 v, the output voltage is . a. -1.25 v b. 1.5 v c. 3.0 v d. - 3.0 v
e. 5.0 v
When the input voltage to this circuit is 0.5 v, the output voltage is 3v .
Calculation :
Rf = 10000
R = 2000
Vi = 0.5 v
It is an non inverting amplifier .
Voltage gain
A = v₀/vi =[tex](1+\frac{RF}{R} )[/tex]
v₀ = Vi[tex](1+\frac{RF}{R} )[/tex]
v₀ = 0.5[tex](1+\frac{10000}{2000} )[/tex]
= 0.5(1+5)
= 0.5(6)
v₀ = 3v
Stress, also known as pressure, voltage, or (electrical) potential difference, is the potential difference between two points. In an electrostatic field, it corresponds to the work per unit charge required to move the test charge between two points on it.
In the International System of Units, the derived unit of voltage is called the volt. freedom). Older SI definitions of volts used power and current. Quantum Hall and Josephson effects have been used since 1990, and recently (2019) fundamental physical constants were introduced to define all SI units and derived units.
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n empty bottle has a mass of 35.00 grams. When filled with water, it has a mass of 98.44 grams. Of the same bottle is filled with a different fluid, the mass is 89.22 grams. What is the specific gravity of this other fluid
The specific gravity of the liquid is 0.85
What is specific gravity of a liquid?The specific gravity of a liquid is the relative weight of that liquid compared to an equal volume of water. It can also be called relationship density. Specific gravity has no unit
Therefore specific gravity of a liquid = weight of the liquid/ weight of water OR mass of the liquid / mass of water.
Mass of water = 98.44-35.00 = 63.44g
mass of the liquid = 89.22-35.00 = 54.22
Therefore the specific gravity of the liquid = 54.22/63.44= 0.85
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Two vectors A and B have components (0, 1) and (-1, 3), respectively. What are the components of the sum of these two vectors?
The x and y components of the sum of these two vectors are -1 unit and 4 unit respectively.
What is vector?In physics, a vector is a quantity with both a magnitude and a direction. It is often represented by an arrow whose length is proportional to the magnitude of the quantity and whose direction is the same as that of the quantity.
Given that the two vectors A and B have components (0, 1) and (-1, 3), respectively.
Hence,
The x component of the sum of these two vectors is = 0+ (-1)unit = -1 unit.
the y component of the sum of these two vectors is = 1 + 3 unit = 4 unit.
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