The average velocity for the time interval from 2.10 s to 2.85 s is Vavg = 18 m/s.
What is average velocity?
A vector quantity is average velocity. The change in position or displacement (∆x) divided by the time intervals (∆t) during which the displacement happens is the definition of average velocity. Depending on how the displacement is spelled out, the average velocity might be either positive or negative.
Vavg = d X/ d T
Here d X = change in distance
and d T = change in time
there Therefore dT= 2 x 9 x t
so, at t= 2.10s x = 37.8 m/s
at t= 2.85s x= 51.3 m/s
Therefore Vavg = (51.3 m/s - 37.8 m/s) / ( 2.85s - 2.10s )
Vavg = 18 m/s
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A metal bowl with a weight of 1.05 n is placed in a larger kitchen container filled with soybean oil. how much soybean oil must the bowl displace in order to float? for reference, the mass density of soybean oil is about 917 g/liter and its weight density is about 8,99 n/liter. please give your answer in liters
The volume of soybean oil displaced by the boat to float is 0.00011 liters or 1.1 x 10^-4 liters.
An object floating in a liquid follows Archimedes’ Principle.
According to the Archimedes Principle, the amount of fluid displaced by the body is equal to its weight.
So, the buoyant force applied by the liquid should be equal to the weight of the bowl.
Hence
Weight of bowl = Buoyant Force of Soybean Oil
Mg = V(ρ)(g)
Here V = volume of soybean oil
ρ = density of soybean oil
1.05 = V x 917 x 9.8
The volume(V) comes out to be 0.00011 liters.
Thus, the volume of soybean oil displaced by the bowl to float is 0.00011 liters or 1.1 x 10^-4 liters.
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Is the magnetic field inside the loop increasing in strength, decreasing in strength, or steady?
There is a induced current in the conducting loop shown in the figure. According to the Lenz law, the magnetic field inside the loop is decreasing in strength.
State Lenz law.
The induced electromotive force (emf) with different polarities induces a current whose magnetic field opposes the change in magnetic flux through the loop in to ensure that the original flux is maintained throughout the loop when the current flows in it.
How is Lenz’s law conservation of energy?
Lenz’s law is based on the law of conservation of energy. The induced current is always opposed by the cause that produces it. Hence, there is extra work done against the opposing force. The work done against the opposing force results in the change in the magnetic flux and hence the current is induced. Hence the law of conservation of energy is satisfied.
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High temperature and pressure tend to favor flow rather than breakage, so it is surprising that large, very deep earthquakes are sometimes observed, occurring in warm places where the pressure is high. What is accurate about these rare, deep earthquakes?.
They happen at subduction zones, where shifting mineral assemblages appear to "implode" as a result of increased pressure on the rock as it is subducted deeper.
The notion that is currently preferred is "Implosion." The building blocks often reorganize to take up less space as subduction zones move rocks deeper where pressure is stronger, moving from, say, a one-on-top-of-another pattern to a fit-in-the-gap-between-those-below pattern. This might sometimes seem to happen gradually before happening abruptly (I can't move till my neighbor does...), resulting in an implosion. Where temperatures and pressures are just so high that we don't imagine rocks can break, the largest, deepest earthquakes occur. Nowhere near as deep as the earthquakes, humans have never dug a hole. Atomic bomb testing has mostly ended. A large earthquake is also much larger than a large atomic weapon.)
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Sodium is a metal and chlorine is a gas. Is sodium chloride (table salt) is there a gas or a metal like the elements it's made of?
A. Yes
B. No, it has completely different properties
Answer:
B. No, it has completely different properties
Explanation:
Sodium Chloride itself is not an element, but an ionic compound composed of two different elements.
The average distance between a planet and the sun is given by the ________ of its elliptical orbit.
The average distance between a planet and the sun is given by the Semimajor axis of its elliptical orbit.
All the planets present in our Solar System travel around the Sun in an elliptical orbits. Semimajor axis of its elliptical orbit is the longest semidiameter or one half of the major axis of the elliptical orbit.
The distance between the Sun and the planets can be easily calculated using the Equation of Motion. The average distance between Earth and the Sun, which is about 150 million kilometers. The average distance between a planet and the sun is given by the Semimajor axis of its elliptical orbit.
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3. If the current is 6 A and the voltage is 420 V, calculate the resistance
If the current is 6A and the voltage is 420 V, the resistance is 70ohms.
How to calculate resistance?Resistance is the opposition offered by an electrical conductor to the flow of a current through itself, resulting in a conversion of electrical energy into heat and radiation.
The resistance of a current can be calculated using the following formula;
V = IR
Where;
V = voltage R = resistanceI = currentAccording to this question, a current of 6 A and the voltage of 420V is given. The resistance is as follows:
420 = 6 × R
R = 420/6
R = 70 ohms
Therefore, If the current is 6A and the voltage is 420 V, the resistance is 70ohms.
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What is the potential difference between the plates of a 2.9-f capacitor that stores sufficient energy to operate a 75.0-w light bulb for one minute?
Answer:
Q = I t charge * time where I = charge / time
Q = V * C where Q is the charge stored on capacitor C
V C = I t
V = I t / C = 75 C/s * 60 sec / 2.9 farad = 1552 Volts
Note: farad = Coul / (J / Coul) = Coul^2 / J
15. The speed of light is very close to 300,000 km/s. The planet Jupiter is around
741 million km from the Sun. How long does it take for light from the Sun to reach
Jupiter?
Answer:it take light sun jupitor bang ding ow 3 seconds beofre bang bing boom
Explanation:
You push on a block on frictionless ice with a force of 8 n, causing it to accelerate at 2 m/s 2. the mass of the block is:________
The mass of the block is:_force
Given, force f=8N.
acceleration (a) = 2 m/s 2. Now, a cording to
Newtons Law of force where, me mass
or,
m-Ea
= 8 = 4kg
What is force ?
In physics, a force is a power that could exchange the motion of an item. A force can reason an item with mass to alternate its velocity (e.g. moving from a kingdom of relaxation), i.e., to accelerate. force also can be described intuitively as a push or a pull. A pressure has each significance and course, making it a vector amount. it's far measured within the SI unit of newton (N). force is represented by the symbol F (formerly P).
The original form of Newton's second regulation states that the net pressure acting upon an object is same to the price at which its momentum adjustments with time. If the mass of the item is consistent, this regulation means that the acceleration of an item is without delay proportional to the internet pressure performing on the item, is in the route of the net force, and is inversely proportional to the mass of the item.
principles associated with pressure include: thrust, which will increase the velocity of an item; drag, which decreases the velocity of an item; and torque, which produces changes in rotational velocity of an item.
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The average atomic mass of 6li and 7li are 6.0151 amu and 7.0160 amu, respectively. calculate the natural abundances of 6li. the average atomic mass of li is 6.941 amu.
Average atomic mass = f1M1 + f2M2 +… + fnMn
where f is the fraction representing the natural abundance of the isotope and M is the mass number (weight) of the isotope.
let x be the fraction of ^6li ,
then fraction abundance of [tex]^7li[/tex] will be (1-x)
now applying above equation:
6.941 = x × 6.0151 +(1-x) 7.0160
1.0009x = 0.075
x = 0.0749
so % of [tex]^6li[/tex]= 7.49%
% of [tex]^7li[/tex]= 92.50%
Average Atomic Mass is the average mass of an element based on the percent abundance of each isotope of that element. (atoms with different number of neutrons, but same number of protons).To know more about Average Atomic Mass visit : https://brainly.com/question/13753702
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Modifying games is one way to level the playing field for individuals of varying abilities provide four examples of how you could modify the game of baseball
It has been demonstrated that modified sports, in which the equipment and rules are altered to improve skill performance, foster skill learning and may even boost participation.
The sport is replicated in a modified game, although some of the regulations are altered. Limited touches or time with the ball, a smaller field or court, different-sized balls or goals, or the obligation to defend repeatedly are some examples of modified rules. Like any other sport you may have played, such as basketball or football, modified sports feature regulations that have been modified to take into account the talents and abilities of older or less mobile participants. Depending on the skills of the participants who want to participate, modified sports can be altered.
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A transverse wave travels along a string. where are the points of maximum kinetic energy? at the points of zero displacement at the points of extreme displacement
A transverse wave travels along a string. where are the points of maximum kinetic energy.
At instantaneous t=T/4 and t=3T/4, the incident wave travels a distance threeλ/4 to the right and the pondered wave travels the equal distance at the string to the left. transverse The equal path difference some of the waves is lambda/2 or threeλ/2. therefore, crest of 1 wave falls on trough of the opposite and vice-versa. the resultant displacement at all factors is 0 and is represented via thick horizontal line in determine. transverse, all of the particles are passing simultaneously via their suggest position, however in a route opposite to the path at t=T/four.what's the temperature you want in Kelvin to start fusing hydrogen to heliumas the protostar profits mass, its middle receives hotter and extra dense. in some unspecified time in the future, transverse it's miles going to be hot sufficient and dense enough for hydrogen to begin fusing into helium. It needs to be 15 million Kelvin within the middle for fusion to start.Learn more about transverse https://brainly.com/question/13618693
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What phrase describes radioactivite decay
the splitting of a large nucleus into smaller nuclei is the phrase that describes radioactive decay
The process through which an unstable atomic nucleus loses energy through radiation is known as radioactive decay, also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration. A substance with unstable nuclei is regarded as radioactive decay
The complete question is
Which phrase describes radioactive decay? (1 point)
the triggering of one reaction by the products of another
the joining of small nuclei into a laroid nucleus
o the splitting of a large nucleus into smaller nuclei
o the spontaneous emission of radiation
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Scientists are trying to create plasma in
An ionized plasma can be created in cyclotron with the help of superimposition of static magnetic field and electromagnetic field.
What is Plasma?Plasma is superheated matter. It is so hot that the electrons are ripped away from the atoms forming an ionized gas. It comprises over 99% of the visible universe.
Given in the question is about Plasma, which is also fourth state of matter.
Scientists are trying to create Plasma in cyclotrons. Cyclotron is a device that propels a beam of charged particles in a circular path. It is also called particle accelerator. Electron cyclotron resonance (ECR) occurs when the natural frequency of the rotating electrons coincides with the frequency of incident radiation. One method to produce ionized plasma is to superimpose a static magnetic field with the high frequency Electromagnetic field at the electron cyclotron resonance frequency.
Therefore, an ionized plasma can be created in cyclotron with the help of superimposition of static magnetic field and electromagnetic field.
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chanice drives her scooter 7 kilometres north. she stops for lunch and then drives 5 kilometres east. what distance did she cover? what was her displacement?/8
By using vector
a. the distance traveled is 12 kilometres
b. the resultant displacement is (7 i + 5 j) kilometres
We need to know about vectors to solve this problem. Vector has magnitude and also direction. Displacement is included in vector. It can be written as
s = sx i + sy j + sz k
where s is displacement, sx is displacement on x-axis, sy is displacement on y-axis and sz us displacement on z-axis.
From the question above, we know that
east = positive x
south = negative y
west = negative x
north = positive y
s1 = 7 j
s2 = 5 j
The distance traveled is
s = s1 + s2
s = 7 + 5
s = 12 kilometres
The resultant displacement is
s = s1 + s2
s = 7 i + 5 j
s = (7 i + 5 j) kilometres
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Were both sides of the single magnet attracted to the metal surface? use your results to support your answer.
YES both sides of the single magnet attracted to the metal surface because metals are not paramagnetic magnets, temporary magnetism can be induced in metal by bringing a magnet close to it . The pole of metal surface will be such that it is attracted by the magnet.
From result: A1 and A2 both side of magnet attract to metal surface.
when one magnet is removed from stack, magnetic poles of stack will not change because stack consist of many mgnet , after removing one magnet from stack pole strength of stack will reduce but pole of stack will remain same.
From result:
When A side of To know more about standard light intensity visit : https://brainly.com/question/13003361
#SPJ4interact with stack , they attract each other and after removal of one magnet from stack, stack repel with other side A2 of magnet. hence stack pole has not changed after removal of one magnet from it.
Initial most propble speed Vi= [tex]\sqrt 2RT/M[/tex]
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If the maximum e-component of an electromagnetic wave is 600 v/m, what is the maximum b-component?
the maximum e-component of an electromagnetic wave is 600 v/m then the maximum b-component is B = 2.0 * 10^-6 T.
What is electromagnetic wave?In terms of science, electromagnetic radiation is made up of electromagnetic field waves that are travelling through space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, light, and radio waves. These waves are all a component of the electromagnetic spectrum.
Em/Bm = c
Bm = c*Em
B = E/c
B = 600 V/m / 299,792,458 m/s
B = 2.0 * 10^-6 T
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solve problem 2.5 if a 150 mm thick brick wall, which is 2.1 m high and 7.5 m long, bears directly on the top of beam cd.
The tributary region of the beam CD is indicated by the shaded area. The tributary area of the beam CD has a width of B=3.6m. The CD beam's tributary area is 7.5 meters long. The concrete slab has a thickness of H=100mm.
What is structural analysis?
The goal of structural analysis is to forecast how a structure will react to a set of arbitrary external loads.
The goal of the structural analysis is to determine how changes to the structure as a whole or in part will affect the ultimate limit states and service ability limit states as described in Section 8.
Establishing a sensible distribution of internal forces, moments, stresses, strains, and displacements over the entire or a portion of a structure is the goal of a structural study.
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Two balls of masses 4kg and 2kg move towards each other with a velocity of 4ms-1 and -2ms-1 respectively. if after collision they stick together and move with +2ms-1, what is
The change in the momentum of the balls is -8 kg.m/s.
Initial momentum of the ballsThe initial momentum of the balls is calculated as follows;
Pi = 4 kg(4 m/s) + 2 kg(2 m/s)
Pi = 20 kg.m/s
Final momentum of the ballsPf = 2 m/s (4 kg + 2 kg)
Pf = 2 m/s (6 kg)
Pf = 12 kg.m/s
Change in momentum of the ballsΔP = Pf - Pi
ΔP = 12 kg.m/s - 20 kg.m/s
ΔP = -8 kg.m/s
Thus, the change in the momentum of the balls is -8 kg.m/s.
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The complete question is below:
What is is the change in momentum of the balls?
A car, travelling at 25 m/s, starts to accelerate uniformly at 3 m/s2 for 80 m.
A car, travelling at 25 m/s, starts to accelerate uniformly at [tex]3m/s^2[/tex]for 80 m.
The final velocity will be:
[tex]\sqrt{1105} m/s[/tex]
How to find the final velocity?
We will use Newton's third law.
[tex]v^2-u^2=2as[/tex]
where,
v = final velocity
u = initial velocity
a = acceleration
s = distance
Substituting the values, we get:
[tex]v^2=480+625=1105\\v=\sqrt{1105}[/tex]
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often a vector is specified by a magnitude and a direction; for example, a rope with tension t⃗ exerts a force of magnitude t
To study vectors it is best to select a coordinate system and manipulate it in that coordinate system and the component of A in x is 0.9396 while in y it is 0.342.
What is a vector?An item with both magnitude and direction is referred to be a vector.
A vector can be visualized geometrically as a straight spline, with a pointing in the orientation and a length equal to the value of the vector.
A vector has magnitude and direction so we can form a vector coordinate system and manipulate each vector in that such that it will be clear to study all vectors.
Given the vector A,
Magnitude |A| = 1 units
The angle of inclination from the x-axis is 20°.
Component of A in the x-axis ⇒
|A|cos20° = 1(0.9396) = 0.9396
Component of A in the y-axis ⇒
|A|sin20° =1(0.342) = 0.342
Hence "The component of A in x is 0.9396 while in y it is 0.342".
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Given question is incomplete with the missing image attached below;
Describe the changes of energy in an electrical train as it approaches a station and breaks to halt
The changes of energy in an electrical train as it approaches a station and breaks to halt are potential energy → friction → heat and sound
- → friction on train wheels due to brakes reduces KE of train to zero
- → heat and sound to surroundings
What is energy?Energy, according to scientists, is the capacity for work. The ability to transform energy from one form to another and use it to perform tasks is what makes modern civilization possible. People utilize energy to travel by foot and bicycle, drive vehicles on land and in water, prepare meals on stoves, create ice in freezers, illuminate our homes and workplaces, create goods, and launch people into space.
Energy comes in a wide variety of forms, including:
HeatLightMotionElectricalChemicalGravitationalThese energies can be divided into two categories for working energy:
Potential or stored energyKinetic or working energyLearn more about energy
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a 1550 kg car located at 275, 0, 0 m has a momentum of 46000, 0, 0 kg · m/s. what is its location 11 s later? (express your answer in vector form.) rf
The location of the car after 11 seconds will be 445.05 m.
Mass of the car = 1550 kg
The momentum of the car = 46000
Distance of the car = 275 m
The velocity of the car is,
Momentum = Mass × Velocity
M = m × v
[tex]v = \frac{M }{m}[/tex]
[tex] = \frac{46000}{1550} [/tex]
= 29.67 m/s
The velocity of the car is 29.67 m/s.
The location of the car after 11 seconds will be,
[tex]Velocity = \frac{ Distance}{ Time}[/tex]
[tex]v = \frac{d}{t} [/tex]
d = v × t
= 29.67 × 15
= 445.05 m
Therefore, the location of the car after 11 seconds will be 445.05 m.
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If the dark adapted eye has a pupil diameter of 7.0 mmmm , how many photons per second enter the eye from the star? assume the starlight has a wavelength of 550 nmnm .
1562.2 photons per second enter the dark adapted eye has a pupil from the star.
What is wavelength?A waveform signal's wavelength, which is the distance between two identical locations (adjacent crests) in the succeeding cycles, determines whether it is sent over space or via a wire. In wireless systems, this length is frequently specified in metres (m), centimetres (cm), or millimetres (mm) .
energy of each photon
E = hc/ lamda
E = 3.61 * 10 to power -19J
N, the number of photons that enter each second
NE = P
N = P/E
N = 1562.2 photons/sec
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Which of the following elements is likely to form an ionic bond with potassium?
Chlorine is likely to form an ionic bond with potassium.
A chemical bond is a strong bond that can be formed between atoms, ions, or molecules to generate chemical compounds. The bond may be created by the sharing of electrons in covalent bonds or by the electrostatic attraction of two oppositely charged ions, as in ionic bonds.
The main interaction in ionic compounds is ionic bonding, a type of chemical bonding that involves the electrostatic attraction between two atoms or ions with dramatically differing electronegativities.
When a metal and a non-metal react, an ionic bond is created.
To establish an ionic bond, the metal loses electrons (donates them), whereas non-metals receive electrons (accept them).
Chlorine (Cl) is a non-metal, whereas potassium is a metal. As they interact to create an ionic bond, potassium donates one electron while chlorine accepts one.
The correct option is (A).
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a ball is dropped from an upper floor, some unknown distance above your apartment. as you look out of your window, which is 1.50 m tall, you observe that it takes the ball 0.240 s to traverse the length of the window.
Height above the top of Tom's window the ball was dropped= 1.31m
Given that,
The height of window (s) = 1.50m
Time(t) = 0.240s
We have to find the height, and for this, we have to find the velocity using the equation of motion:
s = ut + 1/2 g[tex]t^{2}[/tex]
By putting the value of h and t in the equation
1.50 = u × 0.240 + 1/2 × 9.8 × [tex]0.240^{2}[/tex]
1.50 = u × 0.240 + 0.28224
u = (1.50 - 0.28224) / 0.240
u= 1.21776 / 0.240
u= 5.074
Now we have to calculate height by using the formula
[tex]v^{2}[/tex] = [tex]u^{2}[/tex] + 2gh
By putting the value of u and v we get
[tex]5.074^{2}[/tex] = 0 + 2 × 9.8 × h
h = [tex](5.074)^{2}[/tex]/ 2 × 9.8
h = 1.31 m
Therefore the height is 1.31 m above the window.
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The complete question is:
A ball is dropped from an upper floor, some unknown distance above Tom's apartment. As he looks out of his window, which is 1..50 m tall, Tom observes that it takes the ball 0.240 s to traverse the length of the window. Determine how high ℎ above the top of Tom's window the ball was dropped. Ignore the effects of air resistance.
Electron affinity is the energy associated with the gain of an electron by an atom in the gaseous state. Which element will release the most energy when gaining an electron?.
The element which release most energy while gaining an electron is Chlorine.
Chlorine has a higher affinity for electrons than fluorine does, despite the fact that fluorine is intended to have halogens with higher electron affinity .Therefore, chlorine has the highest electron affinity among the all elements in the group.
When an electron is added to a neutral atom to create a negatively charged ion, how much energy is released. Only a few chemical elements, primarily the halogens, have values available since it is difficult to determine the affinities of atom’s electrons.
Low melting and boiling points characterize the halogens. They all react with hydrogen to create acids. Salts are easily formed when they react with metals. Their outer shell contains seven valence electrons.
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Newton’s second law relates an object’s acceleration to its mass and the net force acting on it. Does newton’s second law apply to a situation in which there is no net force? select the best explanation.
Newton's second law does apply to a situation in which there is no net force as having a net force of zero will produce an acceleration having 0.
According to Newton's second law, the acceleration of an object depends upon two variables- the mass of the object and the net force acting on the object. Here, the acceleration of an object is directly proportional to the force acting on it and inversely proportional to the mass of that object. The net force applied is equal to the sum of all the forces acting on an object.
In a situation where the net force applied is zero, the object having a mass would have zero acceleration. This means that the object would have zero velocity and would be constant.
This depicts that Newton's second law can be applied to every situation where there is a net force applied, or not. Even if there is no net force, this law can still be applied.
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calculate the moment of inertia of a skater given the following information. the 58.0–kg skater is approximated as a cylinder that has a 0.102–m radius.
The Moment of Inertia of skater of mass 58 Kg with approximated radius of 0.102 m will be 0.301 kg m².will be 0.301 kg m².
We have a 58 kg skater who is approximated as a cylinder that has a radius of 0.102 m.
We have to determine the Moment of Inertia of the of the skater.
What is Moment of Inertia? What is its general formula?Moment of inertia is the property of the body by which it resists angular acceleration. The general formula of Moment of Inertia is given by -
I = Σ m[i] r[i]².
According to the question -
Mass of skater = 58 Kg
Radius = 0.102 m
Now, the moment of inertia of the cylinder about the axis of cylinder is -
I = 1/2 MR²
I = 0.5 x 58 x 58 x 0.102 x 0.102
I = 1682 x 0.010404
I = 0.301 kg m²
Hence, the Moment of Inertia of skater of mass 58 Kg with approximated radius of 0.102 m will be 0.301 kg m².
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a rigid tank contains an ideal gas at 40°c that is being stirred by a paddle wheel. the paddle wheel does 200 kj of work on the ideal gas. it is observed that the temperature of the ideal gas remains constant during this process as a result of heat transfer between th
The total entropy generation is 0.67 kJ/K
CalculationSince there is no increase in the temperature of the gas, so according to the 1st law of thermodynamics
δQ=dU+δW
⇒ δQ=δW=200KJ
Then here dU is zero because the temperature is constant.
Now, S2−S1=∫[tex]\frac{δQ}{T}[/tex]+ Sgen
Here as it can be seen, there is no increase in the temperature of the gas. So, here we apply the first law of thermodynamics.
∴ S2−S1=0
⇒ Sgen= [tex]-\frac{(-200)}{(27+273)}[/tex] = [tex]\frac{200}{300}[/tex] = 0.67kJ/K
What is the first law of thermodynamics?The first law of thermodynamics expresses that the entire energy of the universe remains the same. Even though the energy can be exchanged between the system and its surroundings, it can never be created not destroyed.
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