Wien's law states that the peak wavelength will: if the surface temperature increases by a factor of 2, the peak wavelength will: decrease by a factor of 2.
What is Wien's law in simple terms?
According to this, the wavelength at which the radiation curve reaches its maximum decreases as temperature increases. Higher energy photons are associated with the shift to shorter wavelengths. In other words, the relationship between max (peak wavelength) and temperature is inverse.
According to Wien's Law, which bears the name of German physicist Wilhelm Wien, objects with varying temperatures emit spectra with varied peak wavelengths. Shorter wavelength radiation is emitted by hotter things, giving them their blue appearance.
Wien's constant is a physical constant that describes the correlation between the black body's thermodynamic temperature and wavelength. It is a result of the black body's temperature and wavelength, which decreases as temperature increases until the wavelength is at its shortest.
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Suppose a doctor advises a patient to go on a diet. Will the patient lose mass in the process or will he/she lose weight? Explain.
When a patient go on a diet, he or she will lose both the mass and weight.
Differences Between Mass and WeightMass is the quantity of an object while weight is the gravitational pull on an object. Mass is constant while weight is not. The unit of mass is Kg while weight is Newton.
Suppose a doctor advises a patient to go on a diet. Will the patient lose mass in the process or will he/she lose weight?
When a patient is on diet, he or she will deprive himself of certain nutrition that can nourish the body. Some of the masses of the body will be converted to energy thereby causing less fat in the body, decrease in body fluid and muscle mass.
Since Weight W = mg, decrease in body mass will eventually lead to weight loss.
Therefore, when a patient go on a diet, he or she will lose both the mass and weight.
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What is the kinetic energy of a he2 ion released from rest and accelerated throught a potential difference of 2.5?
The kinetic energy of a he2 ion released from rest and accelerated through a potential difference of 2.5 is 4.32J.
What is the kinetic energy?In material science, the motor energy of an article is the energy that it has because of its movement. It is characterized as the need might have arisen to speed up a body of a given mass from rest to its expressed speed. Having acquired this energy during its speed increase, the body keeps up with this dynamic energy except if its speed changes. A similar measure of work is finished by the body while decelerating from its ongoing pace to a condition of rest. At the point when work is finished on an item, energy is moved, and the article moves with another steady speed. We call the energy that is moved motor energy, and it relies upon the mass and speed accomplished. Active energy of an item is the proportion of the work an article can do by uprightness of its movement.
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The flow rate of incoming solar energy, as measured at the top of the atmosphere is called?
The flow rate of incoming solar energy, as measured at the top of the atmosphere is called: insolation
The insolation is known as the amount of radiation from the sun's energy that the planet receives. A portion of the energy is absorbed or reflected by the atmosphere and another portion reaches the surface.
The insolation is caused major by:
Solar constantThe angle of the incidence of the sun's ray Duration of the dayThe distance of Earth from sunTransparency of the atmosphereWhat is solar energy?The solar energy is a type of energy whose source is the sun that radiates heat.
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The work function for chromium metal is 4.37 ev. What wavelenght of radation must be used to eject?
Wavelength of radiation must be used to eject electrons with a velocity of 2300 km/s is 63.9nm.
Equation :Einstein's equation for the photoelectric effect
hv = A + W
Where,
Energy of photon : E = hvx = hxc/λ
The work function for chromium is A
Planck's constant h= 6.626X 10⁻³⁴ Js
speed of light c = 2.998X10⁸ m/s
Velocity of 2300 km/s = 2300 X 10⁶ m/s
The kinetic energy of emitted electron
W = mv²/2 = (9.10939 X 10⁻³¹ kg X (2300X10⁶ m/s)²)/2 = 2.409X10⁻¹⁸
Hence,
λ = ch/A+W
λ = (6.626X10⁻³⁴JsX2.998X10⁸m/s)/(7X10⁻¹⁹J + 2.409X10⁻¹⁸J)
= 19.865X10²⁶Jm/3.109X10⁻¹⁸J = 6.39X10⁻⁸= 63.9 nm
Wavelength of radiation must be used to eject electrons with a velocity of 2300 km/s is 63.9nm
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I understand that the question you are looking for is "The work function for chromium metal is 7.0 x 10-19 J (4.37 eV). What wavelength of radiation must be used to eject electrons with a velocity of 2300 km/s?"
Letgbe a group. an elementgofgis calledidempotentifg2=g.1. show that every group has at least one idempotent element.2. show that every group has at exactly one idempotent element
Let g be a group An element of G is called Idempotent if g² = g.
(1)Show that every group has atleast one idempotent element.
Proof: Let G be a group and we know that every group has identity element let e G be a identity element
since e²=e
this shows that e is the idempotent element in G
Hence every group has atleast one idempotent element which is the identity element.
(2) Shows that group has at exactly one idempotent element.
Proof: Let G be a group Now by Part 1 we see that every group has e is the idempotent element.
Now let g∈G be idempotent element other than identity element.
since g is Idempotent.
g²=g
g.g=g
g.g=g.e i.e. (g.e=g)
By left cancellation law we get
g = e
Thus e is the only Idempotent element is G.
hence Every group has at exactly Idempotent Element.
What exactly is an element?Any of more than 100 chemicals that cannot be divided into various substances using common chemical methods Elements include gold and carbon. There is a risk component to surfing one of the constituent pieces of something. The fundamentals of arithmetic, which are a subject of study.
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explain why ???? and ???? can have magnitudes higher than the magnitude of the input source voltage when circuit 2 is at (or close to) resonance.
The reason why voltage across the inductor and capacitor can have higher magnitudes than that of input source voltage is because of electrical energy's oscillation between magnetic and electric field.
When current passes through an inductor a magnetic field is produced and the collapsing magnetic field produced by the inductor charges the capacitor. This process repeats itself causing the electrical energy to oscillate between magnetic and electric field. Because of this oscillation, at resonance, voltage across the inductor and capacitor can be greater than the input voltage.
For a RLC circuit,
[tex]V_{s}[/tex] = [tex]\sqrt[]{V_{R}^{2} + (V_{L} - V_{C})^{2} }[/tex]
where,
[tex]V_{R}[/tex] = Voltage across the Resistor
[tex]V_{L}[/tex] = Voltage across the inductor
[tex]V_{C}[/tex] = Voltage across the capacitor
At resonance,
[tex]V_{L}[/tex] = [tex]V_{C}[/tex]
Therefore, the reason why voltage across the inductor and capacitor can have higher magnitudes than that of input source voltage is because of electrical energy's oscillation between magnetic and electric field.
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A car goes through a circular highway ramp while maintaining constant speed. the correct statement is:_____.
A car goes through a circular highway ramp while maintaining constant speed. The correct statement is the velocity of the car is zero.
What is Velocity?This is defined as the rate of change of distance with time and is a vector quantity which measures both the rate and the direction of the motion.
A car maintaining constant speed means that distance covered is also 0m and the formula for velocity is distance / time.
This therefore means that velocity = 0m / 5s where time can be any digit.
This will result in the velocity being zero which is therefore the reason why it was chosen as the correct choice.
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A charged particle decelerates as it moves from location a to location b. if va = 210 v and vb = 120 v, what is the sign of the charged particle?
The particle is positively charged
What determines the movement of charged particles?The potential difference between the 2 point through which the charged particle moves governs the movement of that particle. An electron moves from lower to higher potential which is negatively charged, and a positively charged particle moves from higher to lower potential.
Now, since the particle is moving from a point A having 210 v potential to point B having 120 v potential that is it is moving from higher potential to a lower potential therefore the particle will be a positively charged one.
What is potential difference?When a single charge is transported in an electric field, work is done by the potential difference (also known as electrical potential). There is potential energy stored in this charge that could flow when work is done on it. Voltage is the shortened form of potential difference and it is measured in volts (V). Voltage is the possibility of a single charge flowing. The need to flow increases with voltage.
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In an inductive circuit with an uncorrected power factor of 40 percent to 60 percent, the power factor can be corrected to within 5 percent of unity by the addition of a(n) ____
In an inductive circuit with an uncorrected power factor of 40 percent to 60 percent, the power factor can be corrected to within 5 percent of unity by the addition of a(n) capacitor.
What is capacitor?A capacitor is a gadget that stores electrical energy in an electric field. It is an inactive electronic part with two terminals. The impact of a capacitor is known as capacitance. A capacitor is a gadget that stores electrical energy in an electric field. It is an uninvolved electronic part with two terminals. The impact of a capacitor is known as capacitance. While some capacitance exists between any two electrical conduits in closeness in a circuit, a capacitor is a part intended to add capacitance to a circuit. The capacitor was initially known as a condenser or compensator. This name and its cognates are still generally utilized in numerous dialects, yet seldom in English, one eminent exemption being condenser mouthpieces, likewise called capacitor receivers.
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Two 10-cm-diameter charged rings face each other, 18.0 cm apart. both rings are charged to 40.0 nc . what is the electric field strength?
The electric field strength = 1104.31 N/C
How do magnetic waves function?When charged particles, including electrons, are accelerated, an electromagnetic field, also known as an EM field, is created. Electric fields surround all electrically charged particles. Particles in motion generate magnetic fields.
Where can I find electromagnetic fields?Electromagnetic fields can be found throughout our environment yet are undetectable to the eye. Electric fields are created by the local accumulation of electric charges inside the atmosphere caused by thunderstorms.
According to the given information:diameter of rings, d = 10 cm
Distance between the rings, r = 18 cm
Charge of the rings, q = 40 nc
The electromagnetic field strength at the rings' midway is computed as follows:
E[tex]_n_e_t[/tex] = E₁ - E₂
E[tex]_n_e_t[/tex] = E₁(₊ve) - E₂(-ve)
The strength of the electric field at the center of a left ring is computed as follows;
[tex]E=\frac{k q L}{\left(R^2+L^2\right)^{3 / 2}}\\[/tex]
E = [tex]E=\frac{9 \times 10^9 \times 20 \times 10^{-9} \times 0.18}{\left(0.05^2+0.18^2\right)^{3 / 2}}[/tex]
E = 1104.31 N/C
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If a force of 1.15 x 103n is required to lift an object with a uniform velocity, determine the mass, in kg, of the object if the acceleration due to gravity is: a) 32.5 ft/sec2 b) 7.86 m/sec2
a) mass of object with acceleration 32.5 ft/sec2 is 116 kg
b) mass of object with acceleration 7.86 m/sec2 is 146 kg
Given:
Force = 1.15 x 10^3 N
Acceleration = a) 32.5 ft/sec2 b) 7.86 m/sec2
Solution: The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
Force = mass x acceleration
mass(a) = Force/Acceleration
= 1.15 x 10^3 N/32.5 ft/sec2 x 3.2808 ft/m = 116 kg
mass(b) = 1.15 x 10^3 N/7.86 m/sec2 = 146 kg
Hence, mass of object with acceleration 32.5 ft/sec2 is 116 kg
Hence, mass of object with acceleration 7.86 m/sec2 is 146 kg
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A pizza delivery must make three stops on her route. She will first leave the restaurant and travel 4km due north to the first house. The next house is 6km away at 45 south of west according to her map. The final stop is 5km away at 60 north of west. What is her displacement from the restaurant to the final stop
5.3 km
This question involves continuous displacement in various directions. When it becomes difficult to imagine, vector analysis becomes handy.
Let us denote each of the individual displacements by a vector. Consider the unit vectors as the unit vectors in the direction of East and North respectively.
By simple calculations, we can derive the unit vectors j,[tex]\frac{-i-j}{2}[/tex] and in the directions North, South of West, and North of West respectively.
So Total displacement vector = The Sum of individual displacement vectors.
Displacement vector = -4.25i + 3.165j
The magnitude of Displacement =| -4.25i + 3.165j | = 5.3km
∴ Total displacement = 5.3km
A displacement is a vector in geometry and mechanics that have a length equal to the shortest distance between a point P's initial and final positions. It measures the length and angle of the net motion, or total motion, in a straight line from the starting point to the destination of the point trajectory. The translation that links the starting point and the ending point can be used to spot a displacement.
The final location xf of a point relative to its beginning position xi, or a relative position (derived from the motion), is another way to express a displacement. The difference between the final and initial coordinates can be used to define the equivalent displacement vector.
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What is displacement?
A an action exerted on a body in order to change the body's state of rest or motion
B the distance traveled divided by the time interval during which the motion occurred
the change in position of an object
Dan object's change in position relative to a reference point
Displacement is the change in position of an object. Displacement is a vector quantity.
As for the given options, option (a) is the definition of Force. Option (b) is the definition of velocity. Option (d) is the definition of motion. Displacement is the shortest distance between initial point and final point whereas distance is the total distance covered from initial point to final point.
Since displacement is a measure of length, its unit is usually meter. It is denoted as Δx. The formula for calculating displacement is Δx = [tex]x_{2}[/tex] - [tex]x_{1}[/tex], where [tex]x_{2}[/tex] is the final position and [tex]x_{1}[/tex] is the initial position.
Therefore, Displacement is the change in position of an object.
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Sketch the vector v in space and write its component form. v lies in the xz-plane, has magnitude 5, and makes an angle of 45 degree with the positive z-axis.
The component form is [tex]5/2 [\sqrt{2} /2,0,\sqrt{2}/2], 5/2 [-\sqrt{2} /2,0,\sqrt{2}/2][/tex].
If vv lies in the xz-plane then yy coordinate is 0.
We can have two scenarios: when vv lies in front of yz-plane and when vv lies behind yz-plane.
If vv lies in front of yz plane, then v=5×[tex][\sqrt{2} /2,0,\sqrt{2}/2][/tex]
If vv lies behind yz-plane then v=[tex][-\sqrt{2} /2,0,\sqrt{2}/2][/tex]
What is a vector parametric equation?A linear combination of vectors with potentially unknowable coefficients makes up a vector equation. It is the same as asking if a given vector is a linear combination of some other provided vectors to determine whether or not a vector equation has a solution.
The vector equation's components, x = x0 + at, y = y0 + bt, and z = z0 + ct, are the line's parametric equations. The direction numbers of the line are the three elements a, b, and c.
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Increase the distance between you and the car ahead of you to more than 3 seconds when __________.
When the road and weather are ideal, the three-second rule is advised for passenger cars. When driving in bad weather or when visibility is poor, slow down even more and widen your following space. If you are operating a bigger vehicle or pulling a trailer, you should also widen your following distance.
What is distance?
Distance is a measure of how far away two objects or locations are using numbers. Distance can refer to a physical length in physics or to an estimate based on other factors in ordinary language (e.g. "two counties over"). It is occasionally used to indicate the distance between two points[tex]{\displaystyle |AB|}|AB|[/tex]. The terms "distance from A to B" and "distance from B to A" are frequently used interchangeably. A distance function or metric is a technique to describe what it means for components of a space to be "near to" or "far away" from each other in mathematics. It is an extension of the idea of physical distance.
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Match the math problem to the correct equation you would use to solve it
The equation can be used to obtain the weight as 40N.
What is the weight?In this problem, we are asked to obtain the equations and thus the problems as shown. We shall now proceed to use the equations are required.
1) W = mg
W = weight
m = mass
g = acceleration due to gravity
W = 4 Kg * 10 m/s^2 = 40 N
2) v = u + at
v = final speed
u = initial speed
a = acceleration
t = time
3 = 0 + 2a
3 == 2a
a = 1.5 m/s^2
3) v = d/t
v = speed
d = distance
t = time
v = 15 m/30 s = 0.5 m/s
4) W = fd
W = work
f = force
d = distance
W = 25 N * 8 m = 200 J
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During an isothermal process, 10 j of heat is removed from an ideal gas. What is the work done by the gas in the process?
The work done in the isothermal process is 10 joule.
We need to know about the isotherm process to solve this problem. The isotherm process can be described as a process where the initial temperature system will be the same as the final temperature. Hence, the internal energy change will be zero.
ΔU = 0
Hence,
ΔU = Q - W
0 = Q - W
Q = W
It means that the heat transferred is the same as the work done.
From the question above, we know that the heat transferred is 10 joule. Thus, the work done in the isothermal process is 10 joule.
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The earth is an open system for energy. What should be added to the pyramids to make them correct due to that statement?
The earth is an open system for energy. Sunlight should be added to the pyramids to make them correct.
A system that is in touch with its surroundings or the external environment through the exchange of energy, matter, and materials is called an open system.
In an open system, the energy and matter flow in and out of the boundaries of the system. Earth is a perfect example of the open system as it is in contact with its surroundings.
The exchange between materials such as energy and information takes place in such a system.
The stove top is an example of an open system because in this system the exchange of both heat and moisture occurs with the surrounding. On the other hand, in a closed system, only energy is exchanged.
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Hi can someone explain me to find the answer of this equation?
I am not able to calculate because there is different units such as kg/m^3,m/s^2
(1000kg/m^3)x(9.8m/s^2)x(1.2m)
I have test tommorow, I will mark you as Brainliest!
Answer:
11760 kg / (m-s^2)
Explanation:
Just do the units FIRST
kg m m
m^3 s^2 1
now you can see that the two m's in the top cancel two m's in the denominator and you are left with
kg/ (m-s^2) as units
Now do the numbers
1000 * 9.8 * 1.2 = 11760
so answer is 11 760 kg / (m-s^2)
Rotation curves for spiral galaxies show? they are slowing down. most of the mass lies in the nucleus. no relation to mass. most have dark halos. rotation speed drops off further from the nucleus.
Rotation curves for spiral galaxies show (C) most have dark halos since It appears that spiral galaxies are encased in the substantial dark matter "halos".
What do spiral galaxies' rotation curves show, and what can their rotation curves tell us about their mass and composition?Abstract The main method for ascertaining the mass distribution in spiral galaxies is to analyse the rotation curves of spiral galaxies. They offer vital knowledge for comprehending spiral galaxies' dynamics, evolution, and creation. This substance, which has mass but emits no light, is referred to as "dark matter." The dispersion of dark matter appears to extend much beyond the host galaxy's borders, according to the rotation curves of satellite galaxies.
Rotation curves are used by astronomers to calculate the masses of specific spiral galaxies. There is more mass between the stars and the galactic centre the quicker the stars orbit the galaxy's centre.
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Using a _____ microscope, cells appear as translucent objects against a bright background
Cells can be observed under a brightfield microscope as translucent objects against a vivid background.
By translucent items, what do you mean?Objects that are translucent allow some light to pass through them. Translucent materials include certain polymers and frosted glass. Only a portion of the light that strikes transparent materials goes through. It takes the materials some time for the light to flow through them. Waxed paper, thin plastic sheets, butter paper, and vegetable oil are a few examples of translucent materials. This mnemonic should help you remember when to use transparent because transparent objects are clear and light may readily pass through them. The thing would be translucent if light still enters it, but it is less noticeable. An opaque object is one through which no light can flow.
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Calculate the magnitude of the electric field at the location of given that the square is 6.05 cm on a side.
The term “electric field” refers to the physical field that surrounds electrically charged particles and acts to either attract or repel all other charged particles in the field (also known as an E-field).
It can also refer to the physical field surrounding a system of charged particles. Electric fields are composed of electric charges and time-varying electric currents.
Both electric and magnetic fields are manifestations of the electromagnetic field, one of the four fundamental interactions (sometimes known as forces) of nature.
Electrical technology makes use of electric fields, which are significant in many branches of physics.
For instance, in atomic physics and chemistry, the electric field acts as an attractive force to hold atoms’ atomic nuclei and electrons together. It is also the force that causes atoms to chemically link together to form molecules.
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Calculate the energy of a photon with a wavelength of 410nm.
a) 4.85 x 10-19 j
b) 4.85 x 10-20 j
c) 4.85 x 10-18 j
d) 2.06 x 1019 j
e) 2.06 x 1020 j
What magnitude charge creates a 3.20 n/cn/c electric field at a point 3.40 mm away?
Magnitude charge creates electric field at a point 3.40m away is 4.11×1⁻⁹C
Electric field - It is defined as electric force per unit charge.
The direction of field is taken to be the direction of the force.
The electric field is outward from a positive charge and in towards negative point charge.
To calculate magnitude charge. Let us take electric field
E = Kq/r²
where
K = electric field constant
q = magnitude of charge
r = distance of separation
E = Kq/r²
Er² = Kq
q = Er²/K -------1.
given values are
E =3.20 n/c
r = 3.40 m
q = 9.0 × 10⁹
using these values in equation 1 we get
q = 3.20N/C * (3.40 m)^2/9.0 × 10⁹
q = 4.11×1⁻⁹C
Magnitude charge that creates electric field at a point 3.40m away is 4.11×1⁻⁹C.
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Think back to the snack food calorimeter. describe an example of each of these occurring in the lab: conduction, convection, and radiation.
An good example would be using a Bunsen burner to heat water in a tin container. The flame initially heats the tin can by radiating heat. Conduction then transfers heat from the tin can to the water. The convection process causes the hot water to then climb to the top.
What is Bunsen Burner?A laboratory piece of equipment known as a Bunsen burner, which bears Robert Bunsen's name, produces a single open gas flame and is used for heating, sterilization, and combustion. Natural gas, liquefied petroleum gas, such as propane, butane, or a combination, are all acceptable choices for the gas.
What three types of flames can you get from a Bunsen burner?Bunsen burner flames come in three primary categories:Because it is simple to notice in a well-lit space, a yellow flame is also referred to as a safety flame.Flaming Blue. A burner's specific flame can reach temperatures of 500 degrees.Blue Flame in Flames The roaring blue flame setting on a Bunsen burner produces the hottest flames.To know more about Bunsen Burner visit:
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if 2 objects are in motion but one has a larger mass does this change the amount of energy that can be transferred during the collision?
Yes, the energy transmission is increased by an object's mass.
When two objects come into touch, they collide. When two items collide, energy is transferred from one thing to the other. Energy is the power to perform tasks (or in more simple terms: energy makes things happen). Any two items that are acting in response to one another create a pair of forces that are of the same size but acting in the opposite direction.
The amount of energy exchanged during a collision depends on the weight and speed of the moving object; bigger objects carry more energy. This explains why truck collisions cause such severe automotive damage. In a collision, the energy carried by the large truck is transferred to the lighter vehicle.
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With your hand parallel to the floor and your palm upright, you lower a 3-kg book downward. If the force exerted on the book by your hand is 20 n, what is the book’s acceleration?.
According to the net force, the acceleration of the book is 16.47 m/s².
We need to know about force to solve this problem. According to second Newton's Law, the force applied to an object will be proportional to mass and acceleration. Hence, it can be written as
∑F = m . a
where F is force, m is mass and a is acceleration
From the question above, we know that
m = 3 kg
g = 9.8 m/s²
F1 = 20 N
Find the net force
∑F = F1 + W
∑F = 20 + m . g
∑F = 20 + 3 . 9.8
∑F = 20 + 29.4
∑F = 49.4 N
Find the acceleration
∑F = m . a
49.4 = 3 . a
a = 16.47 m/s²
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If an elevator is accelerating upward, in which direction is a passenger in the elevator accelerating.
They are not accelerating
Upward
Downward
Falling
If a football quarterback can throw the ball at 20.0 m/s, what is the furthest distance the quarterback could throw the ball neglecting air resistance?
The furthest distance the quarterback could throw the ball neglecting air resistance is 81.63 meters.
The situation given above is an example of projectile motion.
The maximum distance up to which a projectile can be thrown is known as its range, which is given by the formula,
Range(R) = 2u^2 sin(2θ)/g
Here u is the maximum velocity of the projectile= 20 m/s
θ is the angle at which the projectile is launched = 45°
g is the acceleration due to gravity = 9.8 m/s^2
Putting the above values in the given equation,
The range comes out to be 81.63 meters.
Hence, the furthest distance the quarterback could throw the ball neglecting air resistance is 81.63 meters.
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In the canopies of tropical forests, plants are able to survive despite the high temperatures and high levels of solar radiation due to the process of?
In the canopies of tropical forests, plants are able to survive despite the high temperatures and high levels of solar radiation due to the process of Transpiration.
Most of the water absorbed by roots of water is not used for growth of plant but to maintain a moisturized environment. For this purpose water is evaporated as vapour from stoma on the underside of leaves.
This process is called transpiration. Transpiration is the evaporation of water from plants. This cools down plants under hot conditions. This process also pulls water from stems and roots to leaves to hydrate mesophyll cells.
Therefore, In the canopies of tropical forests, plants are able to survive despite the high temperatures and high levels of solar radiation due to the process of Transpiration.
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