Answer:
See the explanation below
Explanation:
First example
The water contained in a lake or tank is in equilibrium there is no movement of the fluid and the water exerts pressure on the bottom of the tank or lake.
Second example
A floating buoy that is on the high seas, the buoy is in static equilibrium and these developed forces allow the buoy not to sink.
Third example
A hydraulic press which uses the principle of pascal and the mechanical advantage due to the relation of areas, where applying a smaller force, you can obtain a much greater force, communicating the energy through a fluid such as oil.
Fourth Example
The atmospheric pressure, which depends on the height of a place above sea level, in this case the fluid is the air. Although the air cannot be seen, it exerts a pressure column on the bodies on the Earth's surface.
Jacob is a white male who has lived in an economically depressed area for his entire life. His mother had him when she was very young, so he lives with her, his grandmother, his uncle, and his little sister in a small appointment. There is not a lot of space, so it is hard for Jacob to concentrate on homework and often he doesn’t do it. Is Jacob at risk for dropping out of high school?
A.
Yes. Jacob’s background suggests a lot of risk factors.
B.
Yes. It is clear that Jacob thinks he can succeed without school.
C.
No. Race is the most important factor in determining which students drop out.
D.
No. Jacob just needs to find a place where he can focus and complete his work.
The environmental and familial challenges he faces indicate an increased risk of dropping out. Yes. Jacob's background suggests a lot of risk factors is the most accurate response. Here option A is the correct answer.
Jacob's situation presents several risk factors that could increase his likelihood of dropping out of high school. First, living in an economically depressed area can limit access to quality educational resources and opportunities, making it harder for Jacob to thrive academically. The lack of space in his small apartment further compounds the problem, as it becomes challenging for him to concentrate on his homework. The absence of a conducive environment for studying can negatively impact his motivation and ability to complete assignments consistently.
Moreover, Jacob's family dynamics may also contribute to his risk of dropping out. Being raised by a young mother, living with his grandmother, uncle, and little sister in a crowded space could imply limited financial resources and potential disruptions at home. These factors may increase stress levels and make it more difficult for Jacob to prioritize his education and engage in school-related activities effectively.
While race and ethnicity can influence educational outcomes, it is essential to consider the specific circumstances and individual factors in Jacob's life rather than assuming that race alone is the most important determinant.
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Can you help me with this question?
Verse 16:
A particle oscillates harmonically on the axis
. The graph below shows a fraction of the particle's displacement over time. Which of the following is the maximum velocity of the particle closest to?
The maximum velocity is vmax = ωA = (2π)(0.04) = 0.08π units/s.
In order to find the maximum velocity of a particle oscillating harmonically on the axis, we must use the relationship between velocity and displacement. The graph of the particle's displacement over time can help us find this relationship.Verse 16: This verse contains the necessary information to answer the question. The graph shows the displacement of the particle over time, with the highest point being 0.04 units and the lowest point being -0.04 units. From this, we know that the amplitude of the oscillation is 0.04 units.To find the maximum velocity, we can use the formula:v = ωAcos(ωt + φ), where: v = velocity, ω = angular frequency, A = amplitude, cos = cosine function, t = time, φ = phase angleSince we are looking for the maximum velocity, we need to find when the cosine function is at its maximum. This occurs when cos(ωt + φ) = 1. Therefore, the maximum velocity is given by:vmax = ωAAt maximum displacement, the velocity is zero. Therefore, we need to find the angular frequency, which is given by:ω = 2πf, where f is the frequency. From the graph, we can see that one complete cycle takes 1 second. Therefore, the frequency is: f = 1 cycle/1 sec = 1 HzTherefore,ω = 2πf = 2π(1) = 2π rad/sNow we can find the maximum velocity: vmax = ωA = (2π)(0.04) = 0.08π units/sSummary: To find the maximum velocity of a particle oscillating harmonically on the axis, we can use the relationship between velocity and displacement. The graph of the particle's displacement over time can help us find this relationship. The formula v = ωAcos(ωt + φ) is used to find the maximum velocity, which occurs when the cosine function is at its maximum.The maximum velocity is given by vmax = ωA. From the graph, we know that the amplitude of the oscillation is 0.04 units and that one complete cycle takes 1 second. Therefore, the maximum velocity is vmax = ωA = (2π)(0.04) = 0.08π units/s.For more questions on maximum velocity
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EXTREMELY URGENT! DUE IN 15 MINUTES
Answer:
Antibiotics can only kill bacterial infections. they cant treat viruses because it's a viral infection that spreads through the body
They can't be used to treat infections caused by the Corona or any virus because antibiotics only kill bacterial infections. They can not treat Corona or any virus because it's a viral infection that spreads through out the body.
What is motion physics
Answer:
B) A change in the position of an object with respect to a reference pointExplanation:
Motion, in physics, change with time of the position or orientation of a body. Motion along a line or a curve is called translation.True or false. The number of images formed depends upon the angle between the mirrors.
* ****
yes it's true................
#indian
When can thermal energy in a system move from lower to higher temperatures?
Answer:
When the object in creases or decreases in temperature.
Explanation:
Heat flow moves energy from a higher temperature to a lower temperature. The bigger the difference in temperature between two objects, the faster heat flows between them. When temperatures are the same there is no change in energy due to heat flow. Radiation and Conduction are the two methods of heat transfer..
The diameter of an atom is about 1 angstrom (10-10 m). In order to develop some intuition for the molecular scale of a gas, assume that you are considering 1 liter of air (mostly N2 and 02, with molar masses of 28 g/mol and 32 g/mol respectively) at room temperature and atmospheric pressure (about 105 Pa). As always, be sure to show your work and explain your reasoning.
a) Calculate the number of molecules in this sample of air.
b) Estimate the average spacing between the molecules.
c) Estimate the average speed of a molecule based on the Maxwell-Boltzmann distribution. Convert your answer to miles per hour.
d) Suppose that we scale up the gas so that each atom is the size of a tennis ball. We also scale up the spaces between the atoms proportionally. Now what would be the average spacing between molecules? What would be the mass of a single molecule (assuming that the density of a molecule remains the same)?
Answer:
A) 2.5 * 10^22 molecules
B) 3.33 * 10^-9 m
C) 1134 miles/hour
D) average spacing = 2.1 m , New mass = 17 kg
Explanation:
Given data :
diameter of atom = 10^-10 m
volume of air = 1 liter
molar masses : 28 g/mol of N2, 32 g/mol of O2
atmospheric pressure = 10^5 Pa
attached below is the detailed solution
How can we get a last beace
Which statement is the inverse of:
If today is Tuesday, then I have Geometry class.
A.I have Geometry class if, and only if, today is Tuesday.
B.I do not have Geometry class today and it is not Tuesday.
C.If today is not Tuesday, then I do not have Geometry class.
D.If I do no have Geometry class today, then it is not Tuesday.
E.If I have Geometry class today, then it is Tuesday.
Answer:
Option c.
Explanation:
Inverse of a statement is defined as the statement in which both hypothesis and conclusion are in negative form.
In the given sentence, "If today is Tuesday, then I have Geometry class", hypothesis is "If today is Tuesday" and the conclusion is "I have Geometry class.".
Inverse of the given statement is :
If today is not Tuesday, then I do not have Geometry class.
A jump ball in the center of the court is used to start a game
Question 1 options:
True
False
Question 2 (1 point)
Saved
A personal foul is a player that delays the game, has unsportsmanlike conduct, illegal entry or has excessive timeouts
Question 2 options:
True
False
Question 3 (1 point)
Saved
A offended player is awarded 2 free throws if the foul occurred while attempting to make a basket and the basket was missed
Question 3 options:
True
False
Question 4 (1 point)
A basketball game is played with 5 players from one team against 5 players from another team
Question 4 options:
True
False
Question 5 (1 point)
The height of the basket is:
Question 5 options:
9 ft.
11 ft.
10 ft.
8 ft. 6 in.
Three vectors with magnitudes 120N, 100N and 80N are given in the diagram below. Write them using the unit vectors i, j and k. . 100N 80N 53° 40° Y 37° 120N X Trigonometric values you may use Cos37⁰ = 0.8 = sin53° sin37° 0.6 = cos53° cos40° = 0.766, sin40° = 0.643
The vectors can be expressed using unit vectors as follows:
Vector A = 96N i + 96N j + 0N k
Vector B = 76.6N i + 64.3N j + 0N k
Vector C = 64N i + 48N j + 0N k.
In the given diagram, let's consider the vectors as follows:
Vector A with magnitude 120N, Vector B with magnitude 100N, and Vector C with magnitude 80N.
To express these vectors using unit vectors i, j, and k, we need to determine their respective components in the x, y, and z directions.
For Vector A (120N), we have the following information:
Magnitude = 120N
Direction: X-axis (cosine component) with an angle of 37° and Y-axis (sine component) with an angle of 53°.
Using the trigonometric values provided:
cos37° = 0.8 and sin53° = 0.8
Therefore, the components of Vector A are:
Ax = 120N * 0.8 = 96N (in the X-direction)
Ay = 120N * 0.8 = 96N (in the Y-direction)
Az = 0N (no component in the Z-direction)
Thus, Vector A can be written as 96N i + 96N j + 0N k.
Similarly, using the trigonometric values for Vector B and Vector C, we can calculate their components:
For Vector B (100N):
Bx = 100N * cos40° = 100N * 0.766 = 76.6N
By = 100N * sin40° = 100N * 0.643 = 64.3N
Bz = 0N
Vector B can be expressed as 76.6N i + 64.3N j + 0N k.
For Vector C (80N):
Cx = 80N * cos37° = 80N * 0.8 = 64N
Cy = 80N * sin37° = 80N * 0.6 = 48N
Cz = 0N
Vector C can be written as 64N i + 48N j + 0N k.
In summary, the vectors can be expressed using unit vectors as follows:
Vector A = 96N i + 96N j + 0N k
Vector B = 76.6N i + 64.3N j + 0N k
Vector C = 64N i + 48N j + 0N k.
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1. Which object would have more inertia — a 1,000 kg car or a 150 kg golf cart?
Answer:a car with 1,000kg
Explanation: A car with a mass of 1,000kg has more inertia than 150 kg
Out of the two objects a 1000-kilogram car and a 150-kilogram golf cart, the 1000-kilogram cart will have more inertia as the inertia of any object is directly proportional to its mass.
What is Newton's first law?According to Newton's first law, until pushed to alter its condition by the intervention of an external force, every object will continue to be at rest or in uniform motion along a single direction.
The larger the mass of the object, the greater would be the inertia of the object.
Thus, a 1000-kilogram automobile will have higher inertia than a 150-kilogram golf cart since any object's inertia is directly proportionate to its mass.
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which wavelengths does nitrogen catch ?
Answer:
The strongest lines are at 337.1 nm wavelength in the ultraviolet. Other lines have been reported at 357.6 nm, also ultraviolet. This information refers to the second positive system of molecular nitrogen, which is by far the most common.
Explanation:
What is SeaWorld?
What is this
What is that
SeaWorld is a chain of theme parks and oceanariums that showcase marine life through educational exhibits, live shows, and thrilling rides. While it has faced criticism for its treatment of animals, SeaWorld has made changes to prioritize conservation and phased out its orca breeding program.
SeaWorld is a chain of theme parks and oceanariums that primarily focuses on marine life and entertainment. The company operates various parks across the United States, including SeaWorld parks in Orlando, San Diego, and San Antonio, as well as Busch Gardens parks in Tampa and Williamsburg. SeaWorld offers a combination of educational exhibits, live shows, and thrilling rides, with a special emphasis on marine animals such as dolphins, whales, sea lions, penguins, and sharks.
SeaWorld parks provide visitors with opportunities to observe and interact with marine creatures up close, while also offering educational programs that aim to raise awareness about marine conservation and preservation. The parks feature captivating shows featuring trained animals, where they perform impressive behaviors and stunts, showcasing their intelligence and natural abilities.
Over the years, SeaWorld has faced criticism from animal rights activists and environmentalists, who argue that the captivity and use of marine animals for entertainment purposes is unethical and harmful to the animals' well-being. These concerns have led to significant changes in the company's practices, including the phasing out of its orca breeding program and the introduction of more educational and conservation-focused initiatives.
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3. Range of a projectile motion is
maximum at angle of:
О O
А. 180°
В. 75°
С. 45°
D.90
Answer:
a
Explanation:
18. A cup contains hot liquid. Some of the liquid evaporates.
What happens to the mass and what happens to the weight of the liquid in the cup?
(1 Point)
Mass Weight
A decreases decreases
B decreases stays the same
C stays the same decreases
D stays the same stays the same
Which statement is the contrapositive of:
If two angles are vertical angles, then they are not adjacent angles.
A.If two angles are not adjacent angles, then they are vertical angles.
B.If two angles are not vertical angles, then they are adjacent angles.
C.If two angles are not vertical angles, then they are not adjacent angles.
D.If two angles are adjacent angles, then they are not vertical angles.
E.Two angles are vertical angles if, and only if, they are not adjacent angles.
Answer:
E.two angles are vertical angles if, and only if they are not adjacent angles
Question Completion Status:
A Moving to the next question prevents changes to this answer.
Question 5
A ball gets pushed off a 1.2m high table with a horizontal speed of 9m/s. How far does the ball travel horizontally before hitting the ground?
Answer:
The ball will travel 4.45 m horizontally before hitting the ground
Explanation:
Horizontal Motion
When an object is launched horizontally with a speed v from a height h, the maximum horizontal distance traveled by the object, also called range can be calculated as follows:
[tex]\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}[/tex]
The question provides us with the following data:
Initial speed of the ball: vo=9 m/s
Height: h=1.2
Proceed to calculate the range:
[tex]\displaystyle d=9\ m/s\cdot\sqrt{\frac {2\cdot 1.2\ m}{9.8\ m/s^2}}[/tex]
Calculating:
[tex]\displaystyle d=9\ m/s\cdot\sqrt{0.2449\ s^2}[/tex]
[tex]d=9\ m/s\cdot 0.4949\ s[/tex]
d=4.45 m
The ball will travel 4.45 m horizontally before hitting the ground
The ossicles (the three tiny bones in the middle ear) are responsible for __________.
A.
converting sound vibrations into neural signals
B.
relaying sound vibrations to the eardrum
C.
vibrating in response to sound waves
D.
amplifying sound vibrations from the eardrum
Answer:
It's actually ( D )
Explanation:
NOT B
Answer:
The answer is D. Just took the test
Explanation:
Peace and love and give the other person the brainliest lol
If the surface area of a sphere increased by a factor of 3, by what factor did the radius of the sphere change?
Explanation:
The surface area of a sphere is given by :
[tex]A=4\pi r^2[/tex]
r is the radius of the sphere
It can also be written as :
[tex]r\propto \sqrt{A}[/tex]
If the surface area of a sphere increased by a factor of 3, it would mean that,
[tex]r'=k\sqrt{3A}[/tex]
or
[tex]r'=k\sqrt{3} r[/tex]
So, the radius of the sphere change by a factor of [tex]\sqrt{3}[/tex].
Lab Report
Light
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_Light_Alice_Jones.doc).
Introduction
1. What was the purpose of the experiment?
Type your answer here:
2. What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Type your answer here:
Experimental Methods
1. What tools did you use to collect your data?
Type your answer here:
2. Describe the procedure that you followed to collect your data.
Type your answer here:
Data and Observations
1. Record your observations in the data tables.
Type your answer here:
Table 1. Angles of Incidence and Angles of Reflection for a Beam of Light Reflected off a Mirror
Angle of incidence (°) Angle of reflection (°)
Table 2. Angles of Incidence and Angles of Refraction for a Beam of Light Refracted through a Glass Lens
Angle of incidence (°) Angle of refraction (°)
Conclusions
1. Draw a diagram (develop a model) that shows what happens to light when it reflects off a mirror. Look for patterns in your data to help you develop your model. Hint: Is the angle of reflection always greater than, less than, or equal to the angle of incidence? Include labels.
Type your answer here:
2. Use your model to predict the angle of reflection of a beam of light reflected off a mirror if the angle of incidence of the beam of light is 40 degrees.
Type your answer here:
3. Draw a diagram (develop a model) that shows what happens to light when it is refracted through a glass lens. Look for patterns in your data to help you develop your model. Hint: Is the angle of refraction always greater than, less than, or equal to the angle of incidence? Include labels.
Type your answer here:
Answer:
Explanation:
the answer is b
Henrietta is going off to her physics class, jogging down the sidewalk at a speed of 4.15 m/s . Her husband Bruce suddenly realizes that she left in such a hurry that she forgot her lunch of bagels, so he runs to the window of their apartment, which is a height 44.4 m above the street level and directly above the sidewalk, to throw them to her. Bruce throws them horizontally at a time 8.00 s after Henrietta has passed below the window, and she catches them on the run. You can ignore air resistance.
Required:
a. With what initial speed must Bruce throw the bagels so Henrietta can catch them just before they hit the ground?
b. Where is Henrietta when she catches the bagels?
Answer:
a 15.22 m/s
b 45.65 m
Explanation:
Using the same formula,
x = vt, where
x is now 45.65, and
t is 3 s, then
45.65 = 3v
v = 45.65/3
v = 15.22 m/s
See the attachment for the part b. We used the distance gotten in part B, to find question A
L 1.1.4 Quiz: Wave Interactions
Question 2 of 10
A light wave traveling through air passes into a new medium. What can result
when some of the wave's energy is absorbed by the new medium?
A. The wave's amplitude increases.
B. The wave's energy decreases.
C. The medium's energy decreases.
O D. The medium's mass increases.
Answer:
Answer B is correct: The wave's energy decreases.
Explanation:
When some of the wave's energy is absorbed by the new medium, the wave's energy decreases. Hence, option (B) is correct.
What is wave?A wave is an energetic disturbance in a medium that doesn't include any net particle motion. Elastic deformation, a change in pressure, an electric or magnetic intensity, an electric potential, or a change in temperature are a few examples.
When light wave transmits from one medium to another medium, some amount of energy of the light wave is absorbed by the new medium. Then the transmitted light wave travels with remaining energy. So, the energy of the wave decreases in this case. Hence, option(B) is correct.
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How much work does the force F(x)=(−2.0/x)N do on a particle as it moves from x=2.0m to x=5.0m?
Answer:
F(2.0)= -1N
F(5.0)= -0.4
Explanation:
The work done by the force F(x) as the particle moves from x = 2.0 m to x = 5.0 m is -6.0 Joules.
Given,
Force = (−2.0/x)N
Initial point = 2m
Final point = 5m
To calculate the work done by a force, the formula:
Work = Force × Displacement × cos(θ)
The angle θ between the force and displacement vectors is 0 degrees since they are aligned.
Plugging these values into the formula:
Work = (-2.0/2.0 N) × 3.0 m × cos(0°)
Simplifying,
Work = -2.0 N × 3.0 m × 1
Work = -6.0 Joules
Therefore, the work done by the force F(x) as the particle moves from x = 2.0 m to x = 5.0 m is -6.0 Joules. The negative sign indicates that the work is done in the opposite direction of the displacement.
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As mass decreases, kinetic energy increases.
Question 1 options:
True
False
Answer: False
Explanation: Kinetic energy and mass are directly proportional. So a decrease in mass would cause a decrease in energy.
False. As mass decreases, kinetic energy also decreases.
The energy possessed by a body due to its motion is called kinetic energy.
If m is the mass of the object moving with a velocity v, then the kinetic energy of the object is given by:
KE= (1/2)m×v²
As given in question mass is decreasing, so kinetic energy also decreases because it is directly proportional to mass.
Therefore, the kinetic energy decrease with a decrease in mass. So, the correct option is "false.
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Electric bees. Flying insects such as bees may accumulate a small positive electric charge as they fly. In one experiment, the mean electric charge of 50 bees was measured to be +30 PC per bee. Researchers also observed the electrical properties of a plant consisting of a flower on top of a long stem. The charge on the stem was measured as a positively charged bee approached, landed, and flew away. Plants are normally electrically neutral, so the measured net electric charge on the stem was zero when the bee was very far away. As the bee approached the flower, a small net positive charge was detected in the stem, even before the bee landed. Once the bee landed, the whole plant became positively charged, and this positive charge remained on the plant after the bee flew away. By creating artificial flowers with various charge values, experimenters found that bees can distinguish between charged and uncharged flowers and may use the positive electric charge left by an earlier bee as a cue to indicate that a plant has already been visited (in which case, little pollen may remain).
In a follow-up experiment, a charge of 38 pC was placed at the center of an artificial flower at the end of a 30-cm-long stem. Bees were observed to approach no closer than 17 cm from the center of this flower before they flew away. This observation suggests that the smallest external electric field to which bees may be sensitive is closest to which of these values?
a. 2.4 N/C
b. 16 N/C
c. 2.7 x10^-10 N/C
d. 4.8 x 10^-10 N/C
Answer: E = 11.8 N/C
Explanation: Electric field is electric force per unit of charge or
[tex]E=\frac{F}{q}[/tex]
F is electric force calculated as:
[tex]F=\frac{kQq}{r^{2}}[/tex]
Electric field will be:
[tex]E=\frac{kQq}{qr^{2}}[/tex]
[tex]E=\frac{kQ}{r^{2}}[/tex]
where k is coulomb constant and is approximately [tex]9.10^{9}\frac{Nm^{2}}{C^{2}}[/tex]
Changing units to match the constant:
38pC = [tex]38.10^{-12}[/tex]C
17cm = [tex]17.10^{-2}[/tex]m
So, electric field for bees in the given conditions is:
[tex]E=\frac{9.10^{9}.38.10^{-12}}{(17.10^{-2})^{2}}[/tex]
[tex]E=\frac{342.10^{-3}}{289.10^{-4}}[/tex]
E = 11.8N/C
The smallest external electric field to which bees nay be sensitive is 11.8N/C
A ball is thrown up with a speed of 30 m/s and caught when it comes back down. You can ignore air resistance.
Where will the ball's instantaneous VELOCITY be 0 m/s?
A. At the top of its path
B. Just before it is caught at the end of it's path
C. Half way to the top of it's path
D. Just after leaving the throwers hand
Answer:
The answer is B have a great day hope I helped
Select the correct answer from each drop-down menu. Danica observes a collision between two vehicles. She sees a large truck driving down the road. It strikes a small car parked at the side of the road. Complete the passage summarizing the collision. On colliding, the truck applies a force on the stationary car, and the stationary car applies and opposite force on the truck. The front of the truck is designed to crumple in order to , which protects the well-being of the passengers.
On colliding, the truck applies a force on the stationary car, and the stationary car applies an opposite force on the truck. The front of the truck is designed to crumple in order to absorb the impact of the collision, which protects the well-being of the passengers.
A car is traveling at 114 m/s and changes its velocity to 77 m/s in 9 sec.
What is the car's acceleration?
Answer:
Given -
Initial Velocity, u = 114 m/sFinal velocity, v = 77 m/s.Time taken, t = 9 sec.To find -
Acceleration of the car.Solution -
Here, using the equation of motion v = u + at we can find the acceleration easily.
★ Here,
V = Final velocityU = Initial VelocityA = AccelerationT = Time.Substituting the values -
→ 77 = 114 + a(9)
→ 9a = 114 - 77
→ 9a = 37
→ a = 37/9
→ a = 4.1 m/s
Therefore, the acceleration of the car will be 4.1 m/s.
Four kilograms of carbon monoxide (CO) is contained in a rigid tank with a volume of 1 m^3. The tank is fitted with a paddle wheel that transfers energy to the CO at a constant rate of 14 W for 1 h. During the process, the specific internal energy of the carbon monoxide increases by 10 kJ/kg. If no overall changes in kinetic and potential energy occur,
determine:
a. the specific volume at the final state;
b. the energy transfer by work;
c. the energy transfer by heat transfer, and the direction of the heat transfer.
Answer:
(a). The specific volume at the final state is 0.25 m³/kg.
(b). The energy transfer by work is 50.4 kJ.
(c). The energy transfer by heat is -10.4 kJ.
Negative sign shows the direction of heat
Explanation:
Given that,
Weight of carbon monoxide = 4 kg
Volume of tank = 1 m³
Constant rate of 14W for 1 hour
The specific internal energy of the carbon monoxide increases by 10 kJ/kg.
(a). We need to calculate the specific volume at the final state
Using formula of specific volume
[tex]V'=\dfrac{V}{m}[/tex]
Put the value into the formula
[tex]V'=\dfrac{1}{4}[/tex]
[tex]V'=0.25\ m^3/kg[/tex]
(b). We need to calculate the energy transfer by work
Using formula of work
[tex]W=Pt[/tex]
Where, P = power
t = time
Put the value into the formula
[tex]W=14\times1\times3600[/tex]
[tex]W=50.4\ kJ[/tex]
(c). The energy transfer by heat transfer, and the direction of the heat transfer
We need to calculate the [tex]\Delta U[/tex]
Using formula of internal energy
[tex]\Delta U=m\Delta u[/tex]
Put the value into the formula
[tex]\Delta U=4\times10[/tex]
[tex]\Delta U=40\ kJ[/tex]
We need to calculate the energy transfer by heat
Using formula of energy transfer
[tex]Q=\Delta U-W[/tex]
Put the value into the formula
[tex]Q=40-50.4[/tex]
[tex]Q=-10.4\ kJ[/tex]
Negative sign shows the direction of heat that is removed from CO.
Hence, (a). The specific volume at the final state is 0.25 m³/kg.
(b). The energy transfer by work is 50.4 kJ.
(c). The energy transfer by heat is -10.4 kJ.
Negative sign shows the direction of heat.
