When a dilute gas expands quasi-statically from 0.50 to 4.0 l, it does 250 j of work. assuming that the gas temperature remains constant at 300 k, what is the change in the internal energy of the gas?
Answers
The change in the internal energy of the gas is ΔE int =0 J.
Q=250J heat is absorbed by the gas in this process.
What is isothermal process?
A thermodynamic process known as an isothermal process keeps the system's temperature constant. Because heat is transferred into or out of the system so slowly, thermal equilibrium is preserved.
Givens:
Vi =0.5 L=0.5×10^ −3 m^3
Vf =4.0 L=4.0×10^−3 m^3
W= 250 J
T= 300 K
Because the gas temperature is constant, the process is ISOTHERMAL. As a result, the system's internal energy is constant.
ΔE int =0 J
We know that, ΔE int =Q−W
And we are aware that there has been no change in the system's inherent energy.
Therefore,0=Q−W
Q=W=250J
Q=250J
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Question:
When a dilute gas expands quasi-statically from 0.50 to 4.0 L, it does 250 J of work. Assuming that the gas temperature remains constant at 300 K, (a) what is the change in the internal energy of the gas? (b) How much heat is absorbed by the gas in this process?
Related Questions
What is the relationship between net force and balanced forces.
Answers
A balloon and a mass are attached to a rod that is pivoted at P.
The balloon is filled with helium, a gas less dense than air, so that it applies an upward force on
the rod.
The rod is horizontal and stationary.
Which action causes the rod to rotate clockwise?
A Move both the balloon and mass 10 cm to the left.
B Move both the balloon and mass 10 cm to the right.
C Move both the balloon and mass to the 25 cm mark.
D Move the balloon to the 20 cm mark and the mass to the 30 cm mark.
Answers
Answer:
The correct option is;
B Move both the balloon and mass 10 cm to the right
Explanation:
Given that the system is in equilibrium, we have;
Force of balloon = \(F_b\)↑
Force of mass = \(F_m\) ↓
The direction of the balloon is having an upward motion which gives a clockwise moment or motion to the rod while the direction of the force of the mass weight is downwards, giving the rod an anticlockwise moment
for the rod to rotate clockwise, the moment of the balloon should be larger than that of the rod
At the present equilibrium we have;
\(F_b\) × 30 = \(F_m\) × 20
Therefore;
\(F_m\) = 1.5×\(F_b\)
Moving both balloon and mass 10 cm to the right gives;
The moment of the balloon = \(F_b\) × (30 - 10) = \(F_b\) × 20 = 20×\(F_b\),
The moment of the mass = \(F_m\) × (20 - 10) = \(F_m\) × 10
When we substitute \(F_m\) = 1.5×\(F_b\) in the moment equation for the mass, we have;
The moment of the mass = \(F_m\) × 10 = 1.5×\(F_b\) ×10 = 15×\(F_b\)
Therefore, the balloon now has a larger momentum than that of the mass and the rod will rotate clockwise.
Answer:
the answer is
Explanation:
the ballon's force is clockwise will the mass's force is anticlockwise
the mass will have a smaller moment due to less distance, while the balloon will have a greater distance, therefore more moment
determine the gravitational attraction between Earth (6.0 x 10^24 kg) and a 2,500 kg car if the car is 6.38 x 10^6 m from Earth's center.
Answers
Answer:
The gravitational attraction between Earth and a 2,500 kg car is 24,592.49 N.
Explanation:
The law of universal gravitation, or simply the law of gravity, establishes the force with which two bodies attract each other simply because they have mass. This law was developed by Sir Isaac Newton.
This law describes the gravitational interaction between massive bodies, and establishes a proportional relationship of the gravitational force with the mass of the bodies.
The Universal Law of Gravitation states that all objects attract each other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
This means that any two bodies attract each other with a greater or lesser force depending on their mass is greater or less, and according to the distance between them.
The fundamental formula of the Law of Universal Gravitation is as follows:
\(F=\frac{G*m1*m2}{d^{2} }\)
Where:
F is the force of attraction between two masses. G is the universal constant of gravitation (6.673484*10⁻¹¹ N.m²/kg²). m1 is the mass of one of the bodies. m2 is the mass of another of the bodies. d is the distance that separates them.In this case:
m1: 6*10²⁴ kgm2: 2,500 kgd: 6.38*10⁶ mReplacing:
\(F=\frac{6.673484*10^{-11}\frac{N*m^{2} }{kg^{2} } *6*10^{24} kg*2,500 kg}{(6.38*10^{6} m)^{2} }\)
Solving you get:
F= 24,592.49 N
The gravitational attraction between Earth and a 2,500 kg car is 24,592.49 N.
please solve this question
Answers
A bicycle has a momentum of 25.00 kg·m/s and a velocity of 2.5 m/s. What is the bicycle’smass?
Answers
Answer:
10 kg
Explanation:
p=ma
25=2.5m
m=25/2.5
m=10 kg
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what maximum current is delivered by an ac source with δvmax = 52.6 v and f = 76.0 hz when connected across a 3.70-µf capacitor?
Answers
An ac source with δvmax = 52.6 v and f = 76.0 hz when connected across a 3.70-µf capacitort the maximum current delivered by the AC source across the 3.70 µF capacitor is approximately 7.931 Amperes.
To calculate the maximum current delivered by an AC source connected across a capacitor, we can use the formula
Imax = δvmax * 2πf * C
where:
Imax is the maximum current
δvmax is the peak voltage (in volts)
f is the frequency (in hertz)
C is the capacitance (in farads)
Let's plug in the given values:
δvmax = 52.6 V
f = 76.0 Hz
C = 3.70 µF = 3.70 × 10^(-6) F
Imax = (52.6 V) * (2π * 76.0 Hz) * (3.70 × 10^(-6) F)
Imax = (52.6 V) * (2 * 3.14159 * 76.0 Hz) * (3.70 × 10^(-6) F)
Imax = (52.6 V) * (150.796 * 10^(-3) F)
Imax = 7.931 A
Therefore, the maximum current delivered by the AC source across the 3.70 µF capacitor is approximately 7.931 Amperes.
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For freely falling objects near earth's surface, _____ is constant.
A
acceleration
B
speed
C
velocity
D
momentum
Answers
The correct option is A. acceleration.
For freely falling objects near Earth's surface, acceleration is constant. An object that is allowed to fall freely under the influence of Earth's gravity is known as a freely falling object. Gravity is an acceleration that acts on any two masses.
For freely falling objects near Earth's surface, the acceleration is indeed constant. This fundamental concept is a result of gravity's influence on objects in free fall. When an object is in free fall, it means that no forces other than gravity are acting upon it. In this scenario, the acceleration experienced by the object remains constant and is equal to the acceleration due to gravity, which is approximately 9.8 meters per second squared (m/s²) near Earth's surface.
The constancy of acceleration in free fall can be attributed to the consistent force of gravity acting on the object. Gravity pulls objects downward towards the center of the Earth, causing them to accelerate uniformly. Regardless of the object's mass, shape, or composition, the acceleration remains constant. This is known as the equivalence principle, which states that all objects experience the same acceleration due to gravity in the absence of other forces.
As an object falls freely, its velocity increases at a steady rate. Each second, the object's velocity increases by approximately 9.8 m/s. This means that in the first second, the velocity increases by 9.8 m/s, in the second second it increases by an additional 9.8 m/s, and so on. The consistent acceleration enables the object to cover greater distances in successive time intervals.
In conclusion, for freely falling objects near Earth's surface, the acceleration remains constant at approximately 9.8 m/s². This constancy arises from the unchanging force of gravity acting on the objects, leading to a uniform increase in velocity over time.
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Brianna is rowing a small boat across a pond. The air is calm; there is no wind
blowing.
a. What type of friction is resisting her motion?
b. If two friends join her in the boat, will the friction force change? Why or why not?
PLEASE I NEEEED HEEEEEEEEEEEELP.
Answers
An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c. take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface
A. Fluid Friction B. Yes, there is more mass on the boat.
Explanation:
Not very sure about B but goodluck.
dry air will break down and generate a spark if the electric field exceeds about 2.85e 6 n/c. how much charge could be packed onto a green pea (diameter 0.620 cm) before the pea spontaneously discharges?
Answers
2.48 × 10⁻¹² C charge can be packed onto a green pea before the pea spontaneously discharges.
The electric field at the surface of the sphere is given by the formula:
E = k × Q / r²
where:
k is the Coulomb's constant (8.99 × 10^9 N m²/C²),
Q is the charge on the sphere, and
r is the radius of the sphere.
Given:
Electric field strength for the breakdown, E = 2.85 × 10^6 N/C
Diameter of the pea, d = 0.620 cm = 0.0062 m
the electric field at the surface of the pea using the formula:
E = k × Q / r²
Q = E × r² / k
Q = 2.85 × 10⁶ × 0.0062²/ 8.99 × 10⁹
Q = 2.48 × 10⁻¹² C
Therefore, 2.48 × 10⁻¹² C charge can be packed onto a green pea before the pea spontaneously discharges.
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Label the graph below with the appropriate phrase.Question 5 options:TimeFaster and faster growth as population becomes largerPopulation sizeSlow growth when population is small1.A. 2.B. 3.C4.D
Answers
Looking at the graph and its missing parts, we can identify the following items to fill each box:
A. Population Size.
Since the population size is a dependent variable in relation to time, we should use it in the vertical axis.
B. Slow growth when population is small.
In the first part of the graph, the population is small and also grows slowly.
C. Faster and faster growth as population becomes larger.
In the final part of the graph, the population is big and also grows fast.
D. Time
Since the time usually is an independent variable, we should use it on the horizontal axis.
An object on Earth's surface has a mass of 18.7 kg. The object's weight is ________ N.
Answers
Answer:
The mass of an object is the same on Earth, in orbit, or on the surface of the Moon. ... the absence of air resistance, all objects fall with the same acceleration g. ... A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N ... What force does he apply if the stone accelerates at a rate of 1.5m/s2?
Explanation:
what is the correct answer for this ?
Answers
Answer: the correct answer is option "C"
Explanation:
Which of the following is most likely to require direct current (DC) for proper operation?
a. A blender
b. A flashlight
c. An electric heater
d. A microwave oven
Answers
Answer:
the answer is b
Explanation:
why does it hurt more to kick a bowling ball than a soccer ball
Answers
The combination of higher mass and lower elasticity in a bowling ball results in a more painful experience when compared to kicking a soccer ball.
Kicking a bowling ball is more painful than kicking a soccer ball because of the differences in their masses and elasticity. The pain experienced when kicking an object is determined by the transfer of kinetic energy and the interaction between the object and the body.
A bowling ball is much heavier and has a higher mass compared to a soccer ball. When you kick a bowling ball, it has a greater amount of momentum, which is the product of mass and velocity. The higher momentum results in a greater force being exerted on your foot upon impact, leading to a higher level of discomfort or pain.
In addition, the elasticity of the objects plays a role. Soccer balls are designed to be more elastic, allowing them to absorb and distribute the impact force more effectively. This elasticity helps to reduce the amount of force transmitted back to your foot, resulting in less pain. On the other hand, bowling balls are typically less elastic, leading to a greater transfer of force and more discomfort when kicked.
Overall, the combination of higher mass and lower elasticity in a bowling ball results in a more painful experience when compared to kicking a soccer ball.
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How many degrees Celsius is 57.39o F?
Answers
Given,
The temperature in Fahrenheit, F=57.39 °F
The temperature can be converted from degree Fahrenheit to degree celcius using the formula,
\(C=\frac{5}{9}(F-32)\)On substituting the known values,
\(\begin{gathered} C=\frac{5}{9}(57.39-32) \\ =14.11^{\circ}\text{C} \end{gathered}\)Thus 57.39 °F in degree celcius is 14.11 °C
During a collision with another car, the occupants of a minivan initially travelling at 4.0 m/s come to a complete stop in 0.5 s. What was the acceleration of the occupants of the minivan?
a) 8.0 m/s2
b) –8.0 m/s2
c) 2.0 m/s2
d) –2.0 m/s2
Answers
Answer: b) - 8.0 \(m/s^{2}\)
Explanation: Acceleration is a vector indicating a rate an object's velocity changes over time:
a = \(\frac{v}{t}\)
and its SI unit is \(m/s^{2}\)
For the minivan to stop, it takes a period of 0.5s:
a = \(\frac{4.0}{0.5}\)
a = 8.0 \(m/s^{2}\)
As a vector, acceleration has magnitude (8\(m/s^{2}\)) and direction. Since it is stopping, the minivan has a direction opposite to the other car, which means acceleration is negative. So: a = \(- 8.0 m/s^{2}\).
what is vertical wind shear? change in the wind speed and/or direction with height change in the vertical wind with distance north or south change in wind speed with direction north or south change in wind direction with horizontal distance
Answers
The correct answer is option D.
Vertical wind shear changes in wind direction with horizontal distance.
Generally, atmospheric wind is referred to as vertical or horizontal wind shear. It is also called wind gradient.
Simply put, win shear is defined as the change in wind speed over a particular distance.
More specifically, vertical wind shear refers to the alter in wind speed along altitude while the horizontal change refers to the change in wind speed that occurs along lateral side or position of the atmosphere in a given altitude.
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light of wavelength 431 nm in incident on a pair of narrow slits. a screen is placed 3 m away, and the distance between the zero order and first order diffraction spots is 1.15 cm on the screen. how far apart are the slits in mm?
Answers
The slits are 0.0981 mm apart.
What is wavelength?
The distance between identical points (adjacent crests) in adjacent cycles can be used to calculate the length of a waveform signal that is traveling through space or over a wire. When referring to length in wireless systems, the units of measurement are commonly meters (m), centimeters (cm), or millimeters (mm).
What is distance?
Distance is a term used to describe the extent or magnitude of a difference between two points. Be aware that the distance between two points and the distance traveled between them are not the same. Distance traveled refers to the overall length of a path that connects two sites. The distance traveled does not have a vector.
Using this equation
y= mλR/d
where m is the order
y is the distance central spot to the nth order fringe or fringe width.
R is the distance from the slit screen
λ is the wavelength
so,
d= mλR/y
= 1*424*10⁻⁹*3.10/1.34*10⁻²
d=0.0981 mm
Therefore, the slits are 0.0981 mm apart.
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As shown in the diagram below, a 1 kg rock tied to a rope is
swung by a boy. This rock has a constant speed of 5 m/s,
and the length of the rope is 1 m. The rock's angular
momentum is
Answers
Answer:
Explanation:
Angular momentum has a formula of L = mvr. Fillingin:
L = (1.0)(5.0)(1.0)
L = 5.0 kg*m/s
Approximately 1. 000 g each of four gasses h2, ne, ar, and kr are placed in a sealed container all under1. 5 atm of pressure. Assuming ideal behavior, determine the partial pressure of the h2 and ne?.
Answers
Answer:2.25atm , because doubling the number of moles of Ar doubles its partial pressure.
Explanation:
Which of the following is NOT considered a moral value?
Ohonesty
O integrity
Orespect
Opriorities
Answers
Answer: Priorities
Explanation:
Having integrity means that you live in accordance to your deepest values, you're honest with everyone, Honesty is the quality of being truthful and transparent in all interactions, whether personal or professional. And Respect ties both honesty and integrity together making priorities not considered a moral value because a value is something outside influences can't change, while priorities can change.
if the ectopic impulse arises from the middle of the right atrium the p' wave is:
Answers
An ectopic heartbeat is an irregular heartbeat that happens when the heart's sinoatrial node (SA node), which is its normal heartbeat pacemaker, is disrupted. Ectopic beats originate from a location outside of the SA node, disrupting the normal heart rhythm. When it comes to the various types of ectopic beats, the most common is premature ventricular contraction (PVC).
If the ectopic impulse arises from the middle of the right atrium, the P wave will be abnormal. This occurs when the heart's ventricles experience an unexpected electrical impulse, causing them to contract prematurely. The P wave is a wave that appears on an electrocardiogram (ECG) and represents the electrical activity of the atria. The sinoatrial node generates a normal P wave, which spreads through both atria and then travels to the atrioventricular node, which slows the impulse and transmits it to the ventricles. P’ waveIf the ectopic impulse arises from the middle of the right atrium, the P' wave is abnormal.
As a result, the ECG can display the following:P waves with a single, smooth contour that are narrower than normal, P waves that have a pointed apex and are taller than normal, and P waves that merge with other waves, making them indistinguishable on the ECG.P prime waves, which are visible on an ECG, are related to supraventricular beats. They're usually seen in the early part of a supraventricular tachycardia event, which is a fast heart rate originating from the atria.
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Electromagnetic radiation consists of discrete packets of kinetic energy called ______, which are characterized by a certain wavelength and energy level.
Answers
Electromagnetic radiation consists of discrete packets of kinetic energy called Photons, which are characterized by a certain wavelength and energy level.
What are photons?The representation by a particle of a quantum of light or any other electromagnetic radiation is called photons. The energy is proportional to the frequency of radiation however it has zero mass. It travels at a constant speed. It is a carrier of energy. When the sun changes the particles into both light and heat, it is a photon. They don’t carry any electrical charge. They are like electric fields traveling through space as shown by Maxwell in his theory. They can be easily created and destroyed. They are also called light quantum.
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When learning a new exercise what is the first thing you should focus on?
A
how much weight you can lift
B
if your form is correct
Dc
how many sets you can complete
D
if you can get done first
Answers
Answer:
If your form is correct (b)
Answer:
The answer is B if your form is correct
Consider this situation: A block is at rest on an inclined
plane. Of the forces listed, identify which act upon the block.
•normal
•gravity
• applied
• friction
•tension
• air resistance
Answers
The forces, act upon the block which is at rest on an inclined plane, are:
normal force.force due to gravity.force due to friction.What is frictional force?Two surfaces that come into contact and glide against one another produce frictional force.
When the block is on an inclined plane, its weight is acting downwards for force of gravity, the surface on the plane acts an upward force named normal force. But to become it rest, a resistive frictional force acts on it. Hence, the forces, acts upon the block, are:
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How to solve for partial pressure?
Answers
Partial pressures can be calculated in one of two ways: 1) To determine the individual pressure of each gas in a mixture, use PV = nRT. 2) Determine the proportion of pressure from the total pressure that may be assigned to each individual gas by using the mole fraction of each gas.
What is partial pressure, and what is its definition?The physiological effects of the various breathing gas components are dependent on partial pressure when diving underwater. Partial pressure is computed using diving terminology as follows: partial pressure = (total absolute pressure) (volume fraction of gas component)
P = (nRT)/V, where P is partial pressure, n is the number of moles of the gas, R is the universal gas constant, T is the temperature, and V is the volume, is the formula used to compute partial pressure.
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One of two methods can be used to compute partial pressures: 1) Use PV = nRT to calculate the individual pressure of each gas in a mixture. 2) Using the mole fraction of each gas, calculate the percentage of the total pressure that may be allocated to each individual gas.
What does the term "partial pressure" mean?While diving underwater, partial pressure affects how the various breathing gas components behave physiologically. In diving jargon, partial pressure is calculated as follows: (Total absolute pressure - partial pressure) (volume fraction of gas component)
The formula used to calculate partial pressure is P = (nRT)/V, where P is partial pressure, n is the number of moles of the gas, R is the universal gas constant, T is the temperature, and V is the volume.
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The peak of the Earth's emission is ______, while the sun's peak is 0.5 micron: A.0.1 microns. B.1 microns. C.10 microns. D.100 microns.
Answers
The peak of the Earth's emission is 10 microns, while the sun's peak is 0.5 micron. Therefore, the correct answer is C. 10 microns.
About MicronsMicron is a unit of measure equivalent to one millionth of a meter or one thousandth of a millimeter. Microns are usually used to measure very small things, such as dust, bacteria, or airborne particles. One micron is equal to 0.001 millimeter or 0.000001 meter.
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In the "Big Bang" model, which describes the formation of the universe, energy accelerated so fast that: a. gravity was produced b. black holes were formed c. hyperspace was formed d. subatomic particles like protons and electrons were produced as well as simple forms of matter like hydrogen
Answers
In the Big Bang theory, which describes the creation of the universe, energy accelerated so quickly that elementary forms of matter like hydrogen and subatomic particles like protons and electrons were created. Here option D is the correct answer.
In the "Big Bang" model, which is the prevailing cosmological theory describing the formation and evolution of the universe, energy accelerated so fast that subatomic particles like protons and electrons were produced, as well as simple forms of matter like hydrogen.
The theory suggests that the universe began as a singularity - an infinitely hot and dense point of matter and energy. The universe then underwent a rapid expansion known as cosmic inflation, during which particles were created from the energy of the expanding universe.
As the universe cooled down, these particles combined to form atoms and molecules, eventually giving rise to stars, galaxies, and everything we observe in the universe today.
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Light of wavelength A and frequency fpasses through a single slit of width a. A diffraction pattern is observed on a screen at a distance x from the slit. Which change will decrease the width of the central maximum?
A. Decrease the frequency of the light
B. Decrease the wavelength of the light.
C. Decrease the width of the slit.
Answers
Which arrow indicates the direction of centripetal force on the object represented by the dot?
Answers
The arrow that indicates the direction of centripetal force on the object represented by the dot is the arrow that points towards the center of the circle.
Centripetal force is the force that keeps an object moving in a circular path. It always acts towards the center of the circle, which is why the arrow pointing towards the center of the circle represents the direction of centripetal force. In the diagram below, the object represented by the dot is moving in a circular path, and the arrow pointing towards the center of the circle represents the direction of centripetal force:
```
^
|
<-----O----->
|
v
```
In conclusion, the arrow that indicates the direction of centripetal force on the object represented by the dot is the arrow that points towards the center of the circle.
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Answer:
C
Explanation:
The arrow labeled C, pointing towards the middle of the circle