Which of the following is true of an isothermal process?
O A. AU = 0
B. Volume is constant.
C. Temperature is constant.
O D. W = 0
Answers
Answer:
Isothermal process = Temperature is constant
Explanation:
As the name implies, iso means same and thermal is related to temperature. In isothermal process, the temperature of the system remains constant throughout. The exchange of heat takes place such that the thermal equilibrium is maintained.Hence, the correct option is (c) " temperature is constant".Answer:
A, C, & D
Explanation:
A. ΔU = 0
C. Temperature is constant
D. W = Q
a p e .x approved right answers
Related Questions
Sandra wants to know how many students are a part of the business department at her school. She has a list of 240
students' majors. She goes to her record and selects the column for the department and the column with the student
names. She clicks on the Total button and in the Student Name column selects
Average
Count
Maximum
Minimum
Answers
Answer:
Count
Explanation:
The count will show you how many students are apart of the business department
Mars, which has a radius of 3.4 × 106 m and a mass of 6.4 × 1023 kg, orbits the Sun, which has a mass of 2.0 × 1030 kg at a distance of 2.3 × 1011m. Mar’s revolution around the sun is 687 days. It takes 24 hours and 37 minutes to complete one revolution. Which is greater, the tangential speed of Mars’s rotation or revolution?
Answers
Answer:
Tangential speed of Mass revolution is greater
Explanation:
In the above question, we are given the following values:
Radius of Mars = 3.4 × 10^6 m
Mass of Mars = 6.4 × 10^23 kg
Mass of the sun = 2.0 × 10^30 kg at a distance of 2.3 × 10^11m.
Mar’s revolution around the sun = 687 days.
Time of Revolution = 24 hours and 37 minutes to complete one revolution.
Step 1
Find the tangential speed of rotation of Mars
Rotation of Mars = 2 × π × r
Radius of Mars = 3.4 × 10^6 m
Rotation of Mars = 2 × π × 3.4 × 10^6 m
Rotation of Mars = 21362830.044m
= 21.4 × 10^6 m
Tangential Speed of rotation for Mars = Rotation of Mars/ time
Time = 24 hrs 37 minutes
Converting to seconds = 88620s
Tangential Speed of rotation = 21.4 × 10^6 m/ 88620s
= 241.48047845m/s
= 241.5 m/s
Step 2
revolution of Mars = 2 × π × d
d = 2.3 × 10^11m.
= 2 × π × 2.3 × 10^11m = 1.45 × 10^12m
Revolution of Mars = 687 days
Converting 687 days to seconds = 59356800s
Tangential Speed of Revolution of Mars = Revolution of Mars/ times
Tangential Speed of Revolution = 1.45 × 10^12m/595356800s
Tangential Speed of Revolution = 24420m/s
Comparing the Tangential Speed of Rotation with the Tangential speed of Revolution, we can see the GREATER ONE IS THE TANGENTIAL SPEED OF REVOLUTION.
Answer:
revolution
Explanation:
on edgenuity :)
If you try opening a door by pushing too close to the side where the hinges are, you may find it difficult to push open. Suppose you are trying to open a door that is 75 cm wide. (Hint: To solve this one, remember the example problem in the lesson about the MA of the broom). a. If you push on the door at a point 15 cm away from the hinges, what is the mechanical advantage? b. What is the best mechanical advantage that you can obtain for any door that you simply push open? Your answer:
Answers
Answer:
a) Mechanical advantage is 0.2
b) maximum obtainable mechanical advantage is 1
Explanation:
The opening of the door is only possible when a force is used to push the door, by generating a torque on the door around the hinge.
Since the door is 75 cm wide, torque generated will be the product of the force applied and the width of the door.
torque = F x 75 = 75F
If the door was pushed at point on the door 15 cm from the hinges, the torque that will be generated will be
torque = F x 15 = 15F
a)The mechanical advantage MA is therefore
MA = 15/75 = 0.2
b) The best mechanical advantage that can be obtained from when you simply push it open is 1
From the case above, if we assume we push it at its maximum width from the hinge, then
MA = 75/75 = 1
Which option describes a phase change
Answers
Answer:
b. Gasloine evaporating into the air
I tryed to answer
plZ help !!
plz answer correctly!
will give the brainliest!!
Answers
Answer:
Explanation:
I-V graph always represent a straight line
Which line shows both positive velocity and positive acceleration?
Answers
I THINK LINE [ D ] IS THE RIGHT ANSWER....
Explanation:
BECAUSE IN [ D ] THERE SHOWS MANY ANGLE AND THERE LIES BOTH POSITIVE VELOCITY AND POSITIVE ACCELERATION.......
HOPE IT HELP.......❣❣❣
Answer:
Line C
Explanation:
Start at point O and accelerates upwards in a positive slope.
A pendulum clock is taken to the moon (g = 1.6 N/kg). How long must the pendulum be in order for the clock to
continue keeping accurate time (1 second cycle)?
3.2 m
7.9 m
0 0.25 m
0.041 m
Answers
Answer:
0.041 m
Explanation:
T = 2π√(L/g)
1 s = 2π√(L / (1.6 N/kg))
L = 0.041 m
Answer:
0.041
Explanation:
got right on test!
Which statement describes a characteristic of a spiral galaxy?
O It is shaped like a pinwheel.
O It has no new star formation.
O It is made only of gases.
O It is smaller than other types of galaxies.
Answers
Answer:
It is shaped like a pinwheel
Explanation:
That's the shape.
The shape is like a pinwheel, which best describes a characteristic of a spiral galaxy. So option 1 is correct.
What is a Spiral Galaxy?The twisted clusters of stars and gas known as spiral galaxies, which are frequently formed of hot, young stars, have striking shapes. As opposed to the other two major groups of galaxy forms, elliptical and irregular, spiral galaxies make up the majority of the galaxies that astronomers have so far discovered.
A spiral galaxy is one that contains Earth and our solar system, such as the Milky Way.
Approximately 72% of the galaxies that have been spotted by scientists are spiral galaxies, according to a 2010 Hubble Space Telescope survey.
The arms that circle the galaxy are formed when the disc of stars orbiting the bulge divides. These spiral arms are rich in gas, dust, and newborn stars that shine brilliantly before dying suddenly.
Hence, the first option is correct that a spiral galaxy is shaped like a pinwheel.
To learn more about Spiral Galaxy :
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why some bulbs are transparent and some are translucent
Answers
On the other hand, the frosted glass LED bulb won’t give you that type of shadow, rather it softens the shadow in a room like a cloudy day. It gives a sharp contrasting shadow with bright colors.
Which point is labeled in the scatterplot below?
Answers
1. Click Play ( ). You are looking down on the North Pole of Earth. From this perspective, do Earth and Venus revolve around the Sun in a clockwise or counterclockwise direction?
Answers
Answer:
Counterclockwise
Explanation:
Earth and Venus revolve around the Sun in a counterclockwise direction.
The planets of our solar system orbit the Sun in a counterclockwise direction (when viewed from above the Sun's north pole) because of the way our solar system formed.The influence of other Solar System bodies, Earth's orbit is an ellipse with the Earth-Sun barycenter as one focus and a current eccentricity of 0.0167. Since this value is close to zero, the center of the orbit is relatively close to the center of the Sun (relative to the size of the orbit).Learn more:
brainly.com/question/17717852
48:09 Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? The first law describes how thermal energy is conserved but not the direction it moves. The first law describes the direction thermal energy moves but not how it is conserved. The first law describes how thermal energy can be created but not how it can be destroyed. The first law describes how thermal energy can be destroyed but not how it can be created.
Answers
Answer:
A). The first law describes how thermal energy is conserved but not the direction it moves.
Explanation:
Thermodynamics is demonstrated as the branch of physics that deals with the associations or relationships between heat and other energy forms like mechanical, chemical, and electrical).
As per the question, the first law discusses that heat is a kind or form of energy and thus, processes associated with thermodynamics are subject to energy conservation principle. Therefore, heat energy can neither be destroyed nor created but rather transferred to one place to another and converted to and from other energy forms.
Thus, the first law of thermodynamics is distinct from the second law as 'the former describes how thermal energy can be conserved to and from other forms of energy and not the direction in which it moves' while the second law focuses on entropy. Therefore, option A is the correct answer.
The first law of thermodynamics describes the conservation of heat energy but not the direction it moves. Option A correct.
First law of Thermodynamics:
It states that the energy cannot be produced or destroyed it just change from one form to another.
Heat is a form of energy and thus, follow the energy conservation principle. So, heat can be change into mechanical energy.
The second law describe the direction of movement of heat.
Therefore, option A is the correct answer.
To know more about First law of Thermodynamics:
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Why does a gneiss rock have bands
Answers
Answer:
Gneiss is a metamorphic rock. The cause of the bands is from segregation.
Answer:
Gneiss rock is a type of metamorphic rock. Gneiss rock is composed of layers of different minerals. The bands are caused by segregation of different types of rock.
Which explains the operation of a hydraulic lift system? A. Archimedes' principle B. Pascal's principle C. Newton's principle D. Bernoulli's principle
Answers
Answer: B. Pascal's principle
This is the idea where you compress a liquid on one end of a tube (more or less), and the liquid's pressure is transmitted to the other end to help lift a heavy object. Often the compressing force is downward to take advantage of gravity.
Distinguish between constructive and destructive interference. Please use 3 content related sentences.
Answers
Answer:
In constructive interferance the waves are added up. While in distructive interferance they are subtracted.
Constructive interferance causes the increase in the amplitude of wave. While distructive interferance decreases the amplitude.
In constructive interferance crust lies over the crust of other wave. While in distructive the crust of one wave lies on the trough of other wave.
Explanation:
A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following correctly lists an advantage and a disadvantage of this project?
A) Advantage: it could help get rid of unwanted waste. Disadvantage: there is no way to use the electricity created.
B) Advantage: it reduces dependence on fossil fuels. Disadvantage: it would emit pollution into the air.
C) Advantage: it is a commonly used energy source. Disadvantage: building the plant would attract new people to the area.
D) Advantage: it would use energy from the sun and wind. Disadvantage: it is a non-renewable source of energy.
Answers
Answer:
A ' is the only choice that has a true advantage and a true disadvantage.
Explanation:
An object moving north with an initial velocity of 14 m/s accelerates 5 m/s2 for 20 seconds. What is the final velocity of the object? 39 m/s 90 m/s 114 m/s 414 m/s
Answers
Answer:
Final velocity of the object(v) = 114 m/s
Explanation:
Given:
Initial velocity (u) = 14 m/s
Accelerates (a) = 5 m/s²
Time taken = 20 seconds
Find:
Final velocity of the object(v) = ?
Computation:
According to 1st law of motion.
⇒ v = u +at
⇒ v = 14 + (5)(20)
⇒ v = 14 + 100
⇒ v = 114 m/s
Final velocity of the object(v) = 114 m/s
In the demolition of an old building, a 1,300 kg wrecking ball hits the building at 1.07 m/s2. Calculate the amount of force at which the wrecking ball strikes the building. The wrecking ball strikes the building with a force of N.
Answers
Answer: F = 1391 N
Explanation:
The information given to you are:
Mass M = 1300 kg
Acceleration a = 1.07 m/s^2
The magnitude of the force striking the building will be
F = ma
Where
F = force
Substitute mass M and acceleration a into the formula
F = 1300 × 1.07
F = 1391 N
Therefore, the wrecking ball strikes the building with a force of 1391 N
Can please tell what mistake I did??question number 10
Answers
Explanation:
When we draw the diagram of the motion we get a right angled triangle.
We have an angle of 30° and a base of 17.3M.
We will use trigonometric ratios to solve this.
We will use tan.
Tan = Opposite / adjacent
Tan 30° = h / 17.3
h = Tan 30 × 17.3
h = 0.5774 × 17.3 = 9.99 M
or 9.99 can be roundoffed with 10m
Which vector below goes from (0,0) to (4.1)?
Answers
Answer:
Vector B
Explanation:
(0,0) is the origin or the middle. In (4,1), the 4 is the x-axis and the 1 is the y-axis.
Solve the given parallel circuit by computing the desired quantities. I1 = amperes I2 = amperes I3 = amperes P1 = watts P2 = watts P3 = watts total current = amperes total power = watts
Answers
Answer:
1. Current 1 (I1) is 2 A.
2. Current 2 (I2) is 4 A.
3. Current 3 (I3) is 1.3 A.
4. Power 1 (P1) is 48 W.
5. Power 2 (P2) is 96W.
6. Power 3 (P3) is 31.2 W.
7. Total current is 7.3 A.
8. Total power is 175.2 W.
Explanation:
Data obtained from the question include the following:
Voltage (V) = 24 V
Resistance 1 (R1) = 12 Ω
Resistance 2 (R2) = 6 Ω
Resistance 3 (R3) = 18 Ω
1. Determination of the current 1 (I1)
Voltage (V) = 24 V
Resistance 1 (R1) = 12 Ω
Current 1 (I1) =..?
V = I1R1
24 = I1 x 12
Divide both side by 12
I1 = 24/12
I1 = 2 A
Therefore, the current 1 (I1) is 2 A
2. Determination of the current 2 (I2)
Voltage (V) = 24 V
Resistance 2 (R2) = 6 Ω
Current 2 (I2) =..?
V = I2R2
24 = I2 x 6
Divide both side by 6
I2 = 24/6
I2 = 4 A
Therefore, the current 2 (I2) is 4 A
3. Determination of the current 3 (I3)
Voltage (V) = 24 V
Resistance 3 (R3) = 18 Ω
Current 3 (I3) =..?
V = I3R3
24 = I3 x 18
Divide both side by 18
I3 = 24/18
I3 = 1.33 A
Therefore, the current 3 (I3) is 1.3 A.
4. Determination of power 1 (P1)
Voltage (V) = 24 V
Current 1 (I1) = 2 A
Power 1 (P1) =..?
P1 = I1V
P1 = 2 x 24
P1 = 48 W
Therefore, power 1 (P1) is 48 W.
5. Determination of power 2 (P2)
Voltage (V) = 24 V
Current 2 (I2) = 4 A
Power 2 (P2) =..?
P2 = I2V
P2 = 4 x 24
P2 = 96 W
Therefore, power 2 (P2) is 96W.
6. Determination of power 3 (P3)
Voltage (V) = 24 V
Current 3 (I3) = 1.3 A
Power 3 (P3) =..?
P3 = I3V
P3 = 1.3 x 24
P1 = 31.2 W
Therefore, power 3 (P3) is 31.2 W.
7. Determination of the total current
Current 1 (I1) = 2 A.
Current 2 (I2) = 4 A.
Current 3 (I3) = 1.3 A
Total current =.?
Total current = I1 + I2 + I3
Total current = 2 + 4 + 1.3
Total current = 7.3 A
Therefore, the total current is 7.3 A.
8. Determination of the total power.
Power 1 (P1) = 48 W.
Power 2 (P2) = 96W.
Power 3 (P3) = 31.2 W.
Total power =..?
Total power = P1 + P2 + P3
Total power = 48 + 96 + 31.2
Total power = 175.2 W
Therefore, the total power is 175.2 W.
Which answer best describes the scientific method?
A. An experiment that has no independent variables
o
B. Ten steps that are followed in a certain order
C. The basic categories for five processes that scientists use
D. The exact order of steps used in every experiment
SUBMIT
Answers
Answer:
D. The exact order of steps used in every experiment
Explanation:
since the scientific meathod is a process of exact steps used to create an experiment this would be the closest answer
Answer:
C. The basic categories for five processes that scientists use
Pirates drag a treasure chest to the left across a sandy beach. In which direction does the treasure chest experience a frictional force, and why?
Answers
Answer:
Chest experiences the friction forces towards right
Explanation:
Friction forces can be defined as a force a body experiences when it is made to slide against the surface. Friction force always acts to stop the the body which is moving. To stop the body, it always acts in the opposite directions to the motion of the body. Therefore, if the treasure chest is dragged across a sandy beach to the left, the frictional forces will act in the right direction.
What are the two reasons why metals are good conductors of electricity?
Answers
Answer:
Metals are excellent conductors because the atoms in a metal form a matrix through which their outer electrons can move freely.
Explanation:
Answer:
Explanation:
Metals are good conductor of electricity because they have very large number of free valance electrons whereas glass has no free electrons to conduct electricity. So metals good conductor whereas glass is a bad conductor of electricity.
The _________of friction is a number that represents the resistance to sliding between two surfaces in contact with one another.
Answers
Answer:
coefficient
Explanation:
vocabulary
Answer:
Hey!
Your answer is definitely coefficient!
Explanation:
Hope this helps!
20. Which of the following ray diagrams is correct?
Answers
Explanation:
The second one is the correct answer
an object that does not allow any light to pass through it is commonly known as
A: Translucent
B: Visible
C: Transparent
D: Opaque
This is not physics fyi this is physical science but it was not on the list
Answers
Answer: D: Opaque
Explanation:
Definition of Opaque on Merriam Webster: blocking the passage of radiant energy and especially light
Answer:
opaque
Explanation:
Definition of Opaque on Merriam Webster: blocking the passage of radiant energy and especially light
hope this helps stay safe :)
The frequency of which type of electromagnetic wave is just higher than that of radio waves? Infrared rays Ultraviolet rays X-rays Microwaves Gamma rays
Answers
Answer: gamma rays
Explanation:
A metallic rod has a length 1.5m and a diameter 0.2 cm. The rod carries a current of 5A
when a p.d of 75V is applied between its ends.
(a) Find the current density in the rod.
(b) Calculate the magnitude of the electric field applied to the rod.
(c) Calculate the resistivity and conductivity of the material of the rod.
Answers
Answer:
Explanation:
Current density J = i / A where i is current and A is cross sectional area
J = 5 / π x ( .1 x 10⁻² )²
= 1.6 x 10⁶ A / m²
b )
electric field applied E = V / l where V is potential difference and l is lemgth of rod
E = 75 / 1.5
= 50 v / m
c )
J = σ E
J is current density , σ is conductivity and E is electric field .
1.6 x 10⁶ = σ x 50
σ = 3.2 x 10⁴ Ω⁻¹ m⁻¹
Resistivity = 1 / σ
= 1 / 3.2 x 10⁴
= .3125 x 10⁻⁴
=3.125 x 10⁻⁵ Ω m
what property of water results from high boiling point
Answers
Answer:
water is able to keep itself
in liquid form on the Earth's surface.
Explanation: