Magnetic Flux is the magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity
What does magnetic flux depend on ?The magnetic flux or field lines linking a coil depends on;
The magnetic field strengthThe number of turns of the coilThe area of each turnAccording to the question, the Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called magnetic flux
To obtain a large induced electromotive force, we cause a coil of many turns to move at a high speed across a strong magnetic field.
According to Faraday's law, which state that whenever there is a change in the magnetic lines of force, an electromotive force is induced, the strength of which is proportional to the rate of change of the flux linked with the circuit.
Therefore, Magnetic Flux is the magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity
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What charge appears on the plates of a 6. 0-μf capacitor when it is charged to 40 v?
Charge appeared on the plates of a 6.0 μf capacitor when it is charged to 40V is 240μC.
Capacitance of the capacitor is determined by the area of the plate of Capacitor and distance between the plates of capacitor.
Capacitor is dependent on the area of the plates, distance between the plates and medium present between the plates.
It is not dependent of the charge and voltage across the capacitor.
We know that Q = CV, where Q is the charge on capacitor, C is the Capacitance and V is the voltage applied across the capacitor.
Q = 6 × 10⁻⁶ × 40
Q = 240× 10⁻⁶ C
Q = 240 μC
Hence the charge on the plates of the capacitor is 240 μC.
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If a wave has a wavelength of 4.5 meters and a period of 0.007 second, what’s the velocity of the wave? be sure to show the steps of your work.
Answer:
v = λ f wavelength * frequency
v = λ / P
v = 4.5 n / .007 sec = 643 m/s
How does betelgeuse compare to the other stars in the amount of light it is giving off?
Betelgeuse is the 10th brightest star in the night sky comparing to other stars. And it is the second brightest in Orion's constellation.
Betelgeuse is the tenth brightest star in the night sky and, after Rigel, the second brightest in Orion's constellation. it is a distinctly reddish semiregular variable star with the widest apparent magnitude range of any first-magnitude star, ranging from +0.0 to +1.6. Betelgeuse is the brightest star in the night sky at near - infrared wavelengths. Its Bayer name is Orionis, which is Latinized to alpha Orionis and abbreviated alpha Ori or Ori
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What would be the greatest effect of the finite size of molecules on the ideal gas law?
At high density of the molecules tends to be greater pressure that of molecules and at low density of the molecules tends to be less pressure that of molecules.
It is given that the molecules are in the ideal gas.
It is required to find the greatest effect of the finite size of molecules on the ideal gas law.
What would be the greatest effect of the finite size of molecules on the ideal gas law?According to ideal gas law, at high density of the molecules tends to be greater pressure that of molecules and at low density of the molecules tends to be less pressure that of molecules.
From ideal gas equation,
PV = nRT
Where,
P - Pressure of the molecules
V - Volume of the molecules
n - Total amount of substance
R - Gas constant
T - Temperature of the molecules
As shown from above equation, both the quantities are directly proportional to each other and also ideal gas law follows the kinetic molecular theory where it suggests that the volume of the molecules have negligible point.
Thus, at high density of the molecules tends to be greater pressure that of molecules and at low density of the molecules tends to be less pressure that of molecules.
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Which prompting system involves providing a prompt with a 0 second delay and never increasing that delay?
Simultaneous prompting method involves providing a prompt with a 0 second delay and never increasing that delay.
The simultaneous prompting method is a technique created to reduce errors. It entails using a controlling prompt (i.e., one that causes the learner to give the right answer every time) right away after the instruction.
As a result, the learner never makes a mistake and always has access to reinforcement. It is a teaching strategy without flaws. To avoid or minimise errors, this prompt is always given with a zero-second delay or right away after the target stimulus (cue). Prior to training sessions, probe sessions are used to evaluate skill mastery.
Therefore, Simultaneous prompting method involves providing a prompt with a 0 second delay and never increasing that delay.
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______ enables digital computers to communicate across different media, including telephone wires, cable lines, and radio waves.
Modem enables digital computers to communicate across different media, including telephone wires, cable lines, and radio waves.
A modulator-demodulator or modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. Modems converts or modulates the analog signals coming from telephone wire into digital form for example in form of 0 s and 1 s.
To transmit digital data, the sending modem must first modulate, or encode, a computer's digital signal into an analog signal that can travel over the phone line. The receiving modem must then demodulate, or decode, the analog signal back into a digital signal recognizable to a computer.
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The ________ explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles.
The nebular hypothesis explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles.
The nebular hypothesis has the sun and planets forming at the same time. According to this model, our solar system began as a gigantic, disc-shaped interstellar cloud of gases and dust about 5 or 6 billion years ago .What hypothesis explains how our solar system probably formed?
The nebular hypothesis is the theory of planetary creation that is most widely accepted. According to this theory, the Solar System was created 4.6 billion years ago as a result of the gravitational collapse of a massive molecular cloud that stretched across several light-years.What is the nebular theory ?
4.6 billion years ago, the solar nebula, a cloud of gas and dust, gave rise to the Sun and the planets. The collapse of the solar nebula was most likely brought on by a shock wave from a nearby supernova explosion. The planets formed in a thin disk around the Sun, which formed in the center of the solar system.Learn more about nebular hypothesis
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(Repost) I need help with this physics question. Thanks in advance! Answer ASAP.
(a) The gravitational force received by each 1 kg mass is 8.66 N.
(b) The magnitude of gravitational acceleration is 8.66 m/s².
(c) The orbital speed of the ISS is 7,663.6 m/s.
(d) The time take for the ISS to orbit round the Earth is 5,558.75 seconds which is equal to 1.54 hours.
Gravitational force received by each 1 kg massThe gravitational force received by each 1 kg mass is calculated as follows;
F = Gm₁m₂/r²
where;
m₁ is mass of Earthm₂ is mass of ISSr is the distance between the ISS and center of EarthF = (6.67 x 10⁻¹¹ x 5.97 x 10²⁴ x 1) / (6780,000)²
F = 8.66 N
Magnitude of gravitational accelerationmg = GMm/r²
g = GM/r²
where;
M is mass of Earthg = (6.67 x 10⁻¹¹ x 5.97 x 10²⁴ ) / (6780,000)²
g = 8.66 m/s²
Orbital Speed of the ISSv = √GM/r
v = √(6.67 x 10⁻¹¹ x 5.97 x 10²⁴ / 6780,000)
v = 7,663.6 m/s
Time of motion of the ISS round the EarthT = 2πr/v
T = (2π x 6780,000) / (7663.6)
T = 5,558.75 seconds
1 hour = 3600 seconds
= 5,558.75/3600
= 1.54 hours
Thus, the gravitational force received by each 1 kg mass is 8.66 N.
The magnitude of gravitational acceleration is 8.66 m/s².
The orbital speed of the ISS is 7,663.6 m/s.
The time take for the ISS to orbit round the Earth is 5,558.75 s = 1.54 hours.
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A string with mass density equal to 0. 0025 kg/m is fixed at both ends and at a tension of 290 n. resonant frequencies are found at 558 hz and the next one at 744 hz. what is the length of the wire?
A string with mass density equal to 0. 0025 kg/m is fixed at both ends and at a tension of 290 n. Resonant frequencies are found at 558 Hz and the next one at 744 Hz. The length of the wire will be L = 0.91 m
A resonant frequency of a string is its natural frequency of a standing wave that is produced in it. The standing waves in the string are called harmonics. A string of a fixed length can have many standing waves. The frequencies of these standing waves are called resonant frequencies.
frequency = 1 / 2L ([tex]\sqrt{\frac{T}{mu} }[/tex])
L = length of the spring
T = Tension
fundamental frequency = 744 - 558 = 186 Hz
186 = 1/2(L) ([tex]\sqrt{\frac{290}{0. 0025 } }[/tex])
L = 340 / (186 * 2)
L = 0.91 m
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This layer of the Earth is made of solid rock, it is hot and made of peridotite.
1. Continental crust
2. Kimberlite pipe
3. Oceanic crust
4. Mantle
the answer is the mantle.
A particular star's spectrum shows the same hydrogen line at a wavelength of 486.0 nm. what can we conclude?
We can conclude that The star is moving toward us; shift to a shorter wavelength.
The transfer of an electron to a higher energy level, such as n = 1 or n = 2, occurs when a hydrogen atom absorbs a photon. The Balmer series refers to this group of hydrogen emission spectra.
The phrase "blueshift" describes how light waves change as an object approaches toward us in space, shifting wavelengths toward the blue end of the spectrum. Change to a shorter wavelength when the star approaches us. A shorter wavelength indicates a blueshift (shift to the blue end of the spectrum), which indicates that the object is travelling in our direction.
Therefore, We can conclude that The star is moving toward us; shift to a shorter wavelength.
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When inspecting a transmission case for defects, measure seal surface openings by using a(n):_______
A Final statement or concluding statement
When inspecting a transmission case for defects, measure seal surface openings by using a(n) dial caliper
What is a dial caliper and why do we use it?For taking precise measures, a dial caliper is a calibrated precision measuring device. Normally, minor amounts of movement and material thickness are measured with dial calipers.
They are particularly well-liked for machining and automotive applications.
Most dial calipers have a measuring range of 150mm (6 inches), however there are other calipers with measuring ranges of 100mm (4 inches) and 300mm (12 inches). Dial calipers do not require batteries because they use a rack and pinion mechanism.
As a result, they are both environmentally and economically friendly.
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Two wires meet at a junction, merging into one wire, and 6 a and 4 a flow into the junction. How much current flows out of the junction?
The current flows out of the junction will be Ten Ampere.
To find the answer, we have to know about the Kirchoff's Current Law (KCL).
What is Kirchoff's Current Law (KCL)?KCL states that, in any electrical network, the algebraic sum of currents meeting at a junction will be equal to zero.We can say that the incoming current flow will be equal to the outgoing current flow.In the question it is given that two wires meet at a junction with 4A and 6A currents, merging into one wire and going out.Thus, the total incoming current will be 4+6=10A, and as per KCL which is same as the outgoing current.Thus, we can conclude that the current flows out of the junction will be Ten Ampere.
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Diagram A shows two laser beams, one blue and one red, that are incident on a mirrored surface. Diagram B shows two laser beams, one blue and one red, that are incident on a transparent block of glass.
Which statement about the situation shown in these diagrams is CORRECT when light is refracted through the glass and reflected from the mirror?
A
The blue and red laser beams reflect at different angles, and they refract at different angles.
B
The blue and red laser beams reflect at the same angle, and they refract at the same angle.
C
The blue and red laser beams reflect at different angles, and they refract at the same angle.
D
The blue and red laser beams reflect at the same angle, and they refract at different angles.
Diagram A shows two laser beams, one blue and one red, that are incident on a mirrored surface. Diagram B shows two laser beams, one blue and one red, that are incident on a transparent block of glass then The blue and red laser beams reflect at the same angle, and they refract at different angles.
A laser emits a very focused beam of light that can be used in a variety of equipment and technologies. Light Amplification by Stimulated Emission of Radiation is what the letters in the term laser stand for. The word "laser" is an acronym for "Light Amplification by Stimulated Emission of Radiation." In a laser beam, the light waves are "coherent," which means they are all traveling at the same speed and wavelength. To do this, excited electrons are passed through an optical "gain medium," which could be a solid substance like glass or a gas.
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A light wave moves from diamond (n= 2.4) into water (n= 1.33) at an angleof 24°. what angle does it have in water?
Answer:
n1 sin θ1 = n2 sin θ2 Snell's Law (θ1 is the angle of incidence)
sin θ2 = n1 / n2 * sin θ1
sin θ2 = 2.4 / 1.33 * sin θ1
sin θ2 = 1.80 * .407 = .734
θ2 = 47.2 deg
An object is thrown upwards with a speed of 16 m/s. how long does it take it to reach a height of 7.0 m on the way up? neglect air resistance.
Given:
initial velocity,u=16m/s
final velocity,v=0m/s
acceleration due to gravity,a=9.8 m/s²
height,h=7m
To find:
time taken,t
we can find the time taken by using second equation of motion as well as first equation of motion,so we use first equation of motion.
v=u+at
substitute the values,we get
0=16+(-9.8)×t
-16=-9.8×t
t=-16/-9.8
t=16/9.8
t=1.63s
Therefore,the time to reach the height of 7m is 1.63s
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Help on this physics question
By using the equations for parabolic motion, we proceed to present the answers for the paragraph seen in the picture: a) t ≈ 0.553 s, b) s = 2.212 m, c) s = 11.060 m.
How to analyze a system on parabolic motion
A system is on parabolic motion if such system can be represented as a particle, that is, a system whose geometry is negligible, and its motion is a combination of horizontal movement at constant velocity and vertical uniformly accelerated movement due to gravity and all viscous and rotational effects are negligible.
The time required for the droplet to reach the ground is:
1.5 m = (1 / 2) · (9.807 m / s²) · t²
t = √[2 · (1.5 m) / (9.807 m / s²)]
t ≈ 0.553 s
And the horizontal distance traveled by the droplet is:
s = (4 m / s) · (0.553 s)
s = 2.212 m
Now, we apply the same procedure for the case of sneezing person:
1.5 m = (1 / 2) · (9.807 m / s²) · t²
t = √[2 · (1.5 m) / (9.807 m / s²)]
t ≈ 0.553 s
s = (20 m / s) · (0.553 s)
s = 11.060 m
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What was discovered in atomic spectra by physics pioneers balmer, rydberg, and ritz?
Mathematical order in atomic spectra was discovered by physics pioneers Balmer, Rydberg, and Ritz.
Atomic spectra are defined as the spectrum of the electromagnetic radiation emitted or absorbed by an electron during transitions between different energy levels within an atom.
When an electron gets excited from one energy level to another, it either emits or absorbs light of a specific wavelength. The collection of all these specific wavelengths of the atom in a given set of conditions like pressure, temperature, etc. is the atomic spectra of atoms. There are three types of atomic spectra and they are :
Emission spectraAbsorption spectraContinuous spectra.Using the Rydberg formula, it becomes easy to calculate the spectral lines. Following is the formula:
[tex]\begin{array}{l}\frac{1}{\lambda }=RZ^{2}(\frac{1}{{n}’^{2}}-\frac{1}{n^{2}})\end{array}[/tex]
Where,
R is the Rydberg constant (1.09737*107 m-1)
Z is the atomic number
n is the upper energy level
n’ is the lower energy level
λ is the wavelength of light
Spectral series of single-electron atoms like hydrogen have Z = 1.
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The virus-induced, specific damage to the host cell that can be seen in a light microscope is called:________
Answer:
It's called, "Cytopathic effects."
The human body has an average density of 979 kg/m3 , what fraction of a person is submerged when floating gently in fresh water?
A person is submerged of about 97.9%.
The average density of the human body is given as 979 kg/ m³.
Define Law of floatation.Law of floatation can be defined as the volume of the liquid displaced when a body floats on the liquid surface is equal to the body submerged in the water.
As body has the stable equilibrium state, the buoyancy of the fluid will be equal to the weight.
Weight of the body floating = Weight of the body immersed in fluid
Law of floatation = Density of the floating object / density of fluid
As fluid is the freshwater here, the density of fluid will be 1000 kg/ m³.
= (979 kg/ m³) / ( 1000 kg/ m³)
= 97.9 %
A person is submerged when floating gently in fresh water about 97.9%.
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The air pressure within a container is inversely related to the volume of the container. thus, as the volume of the container ______, the pressure of the air within it _
Decreases, increases
As the volume of the container decreases, the pressure of the air within it increases.
When the temperature is held constant, pressure decreases as volume increases and vice versa.
What is the relation between pressure and volume ?The amount of force delivered perpendicularly to an object's surface in relation to its area is known as pressure. Its abbreviation is "p" or "P."
Volume is a three-dimensional measurement that's used to gauge a solid shape's capacity. It implies that the volume of a closed form determines how much space it can occupy in three dimensions.When T and n are constants, the relationship between a gas's pressure and volume is inverse. The volume V decreases as the pressure P rises. As long as T and n stay constant, the product P x V is constant.Learn more about Pressure and Volume here:
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This is 25 points!!!
Although geothermal power is renewable and widely accessible due to geothermal energy being present all over the Earth, it is the least used type of power.
Only a few countries produce more than 15% of their total electricity from geothermal power; these countries include Iceland, El Salvador, New Zealand, the Philippines, and Kenya.
Why do you think those five countries use so much more l geothermal power? How could where they are located influence their use of geothermal power?
Answer in 3-5 complete sentences please.
Answer:
Geothermal energy is heat that is generated within the Earth. It is a renewable resource that can be harvested for human use.
the location of the following countries are very near to sea level giving them easy access to the energy.
This is what I think is the answer.
pls tell me if any mistakes..
I hope it was helpful..
A 1. 30 kg block slides with a speed of 0. 855 m/s on a frictionless horizontal surface until it encounters a spring with a force constant of 552 n/m. The block comes to rest after compressing the spring 4. 15 cm. Part a. Find the spring potential energy, u , the kinetic energy of the block, k , and the total mechanical energy of the system, e , for compressions of 0 cm. Part b. Find the spring potential energy, u , the kinetic energy of the block, k , and the total mechanical energy of the system, e , for compressions of 1. 00 cm. Part c. Find the spring potential energy, u , the kinetic energy of the block, k , and the total mechanical energy of the system, e , for compressions of.
a) U = 0 J
k = 0.383 J
E = 0.383 J
b) U = 0.0228 J
k = 0.155 J
E = 0.383 J
c) U = 0.1104 J
k = 0.272 J
E = 0.383 J
d) U = 0.248 J
k = 0.177 J
E = 0.383 J
Method for solving:The equations for kinetic energy is:
k= 1/2*m*[tex]v^{2}[/tex]
The equation for elastic potential energy is:
U= 1/2*ks*[tex]x^{2}[/tex]
Where,
m= mass of the block
v= velocity
ks= spring constant
x= displacement of the spring
(a)when compression= 0 cmU= 1/2*ks*[tex]x^{2}[/tex]
U= 1/2*552*[tex](0)^{2}[/tex]
= 0 J
Kinetic energy:
k= 1/2*m*[tex]v^{2}[/tex]
k= 1/2*(1.05)*[tex](0.855)^{2}[/tex]
k= 0.383 J
Mechanical energy:
E= k + U
E= 0.383+0
E= 0.383 J
There will be no work done by friction or any other dissipative force, hence this energy will be conserved, or it will remain constant (like air resistance). This indicates that only spring potential energy will be created from the kinetic energy (there is no thermal energy due to friction, for example).
(b) spring potential = ?
U= 1/2* 457 N/m*[tex](0.01)^{2}[/tex]
U= 0.0228 J
Since the mechanical energy must remain constant, we may calculate the kinetic energy using the mechanical energy equation:
E= k + U
0.383= k + 0.0228
k= 0.383 - 0.228
k= 0.155
(c)spring constant when x= 0.02
U= 1/2*552*[tex](0.02)^{2}[/tex]
U= 0.1104 J
Using the equation of mechanical energy:
E= k +U
0.383= k+ 0.1104
k= 0.383 - 0.1104
k= 0.272 J
(d) U= 1/2*552*[tex](0.03)^{2}[/tex]
U= 0.2484 J
E= 0.383 J
k = E - U
k= 0.383- 0.206
k= 0.177
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What happens to the observed wavelength if the source of a wave travels toward an observer?
If the observer and source are moving toward each other, then the frequency increases and the wavelength decreases.
What is dopper effect?The Doppler effect defines the shift in frequency of a wave sound caused by movement of the wave source and/or receiver. We'll talk about it in terms of sound waves, but the Doppler effect applies to any type of wave. The Doppler effect, like ultrasound, has a wide range of uses, from medical (with sound) to police radar and astronomy (with electromagnetic waves).The Doppler effect happens when there is relative motion between the observer and the source, not just for sound. Doppler shifts, for example, occur in the frequency of sound, light, and water waves. When ultrasonography is reflected from blood in a medical diagnosis, Doppler shifts can be utilized to assess velocity.To learn more about dopper effect from the given link
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A car goes 122m at 30m/s How long did it travel?
Answer:
It took [tex]\bf 4.07 \space\ \mathrm{s}[/tex] to travel.
Explanation:
To calculate the time taken to travel a distance of 122 m at a speed of 30 m/s, we can use the formula for speed:
[tex]\boxed{speed = \frac{distance}{time}}[/tex].
We can substitute the known values, and then solve for time:
[tex]30 = \frac{122}{\mathrm {time}}[/tex]
⇒ [tex]\mathrm{time } = \frac{122}{30}[/tex]
⇒ [tex]\mathrm{time } \approx \bf 4.07 \space\ \mathrm{s}[/tex]
A car coasts 62. 2 meters along a hill that makes a 28. 3° angle with the ground. if the car's mass is 1234 kg, then what is the change in potential energy?
The change in Potential energy is = 662,292.459 J.
How can we calculate the value of change in potential energy?Here, to calculate the potential energy change we use the formula,
[tex]W= F \times d \times cos\theta[/tex]
Or, [tex]W= m\times g \times d \times cos\theta[/tex]
Here we are given,
d= Distance the car makes = 62. 2 m.
[tex]\theta[/tex] = Angle that the car make along the hill = 28. 3°
F= The amount of force affect on the car = [tex]m\times g[/tex] .
m= Mass of the car = 1234 kg.
g= Acceleration of gravity = 9.8 [tex]m/s^2[/tex]
Now we substitute the known values in the above equation,
[tex]W= m\times g \times d \times cos\theta[/tex]
Or, [tex]W= 1234 \times 9.8 \times 62.2 \times cos(28.3)[/tex]
Or, [tex]W= 662,292.459 J[/tex]
From the above calculation we can conclude that the amount of work done on the car is, 662,292.459 J.
We know, from the work energy theorem that,
The change in Potential energy = The work done on the mass.
So, From the above theorem the change in potential energy is 662,292.459 J.
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A scientist is searching the moons of the solar system for signs of life. He knows that an atmosphere is one of the key features of a location that can
develop life as we know it. Where should he focus his search?
A. Titan
B. Ganymede
C. Luna (Earth's moon)
D. lo
When a substance changes from one type of matter into another, such as two or more substances combining to form compounds, the substance undergoes a:_________
When a substance changes from one type of matter into another, such as two or more substances combining to form compounds, the substance undergoes a: chemical reaction
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
Whereas , When matter undergoes physical change, it doesn't become a different substance. Therefore, physical changes are often easy to reverse.
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The thermodynamic efficiency of a heat engine that rejects heat at a rate of 20 mw when heat is supplied to it at a rate of 60 mw is:_____.
The thermodynamic efficiency of a heat engine that rejects heat at a rate of 20 mw when heat is supplied to it at a rate of 60 mw is 66.67%.
It is given that,
Rejected heat at the rate of 20 mw and supplied heat a rate of 60 mw.
It is required to find the thermodynamic efficiency of a heat engine.
What is the thermodynamic efficiency of a heat engine that rejects heat at a rate of 20 mw when heat is supplied to it at a rate of 60 mw?As we know that
Work Done = Heat Supplied - Heat Rejected
Work Done = 60 mw - 20 mw
Work Done = 40 mw
So the efficiency of heat engine will be:
[tex]\eta=\frac{Work done}{Heat energy supply}[/tex]
[tex]\eta=\frac{40}{60}[/tex]×[tex]100\\[/tex]
η = [tex]\frac{2}{3}[/tex]×[tex]100\\[/tex]
η = 66.67%
Thus, thermodynamic efficiency of a heat engine that rejects heat at a rate of 20 mw when heat is supplied to it at a rate of 60 mw is 66.67%.
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What is the mathematical relationship between wavelength and energy transmission?.
Answer: Wavelength is related to light and also related to energy. The shorter the wavelengths and the higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy. The energy equation is E = hν.