The change in the system's net heat content is what generates the work in an isothermal operation. The change in an adiabatic process' internal energy is what causes the work to be done.
The work done w = 0 as P=0 when an ideal gas is subjected to isothermal expansion (T = 0) in vacuum. Joule established q = 0 empirically; hence, U = 0. Isothermal reversible change can be stated as: q = -w = P for both reversible and irreversible changes (Vf-Vi). The following are the steps to determine the work involved in an ideal gas's isothermal expansion:
Identify the proportion between the gas's final and starting quantities. Calculate the temperature of the gas, its number of moles, and, if necessary, convert it to Kelvin. The work equation for isothermal processes is now W = -nRTln(V2/V1).
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The change in the system's net heat content is what generates the work in an isothermal operation. The change in an adiabatic process' internal energy is what causes the work to be done.
The work done w = 0 as P = 0 when an ideal gas is subjected to isothermal expansion (T = 0) in vacuum. Joule established q = 0 empirically; Hence, U = 0. Isothermal reversible change can be stated as: q = -w = P for both reversible and irreversible changes (Vf-Vi). The following are the steps to determine the work involved in an ideal gas's isothermal expansion:
Identifying the proportion between the gas's final and starting quantities. Calculating the temperature of the gas, its number of moles, and, if necessary, converting it to Kelvin. The work equation for isothermal processes is now W = -nRT ln(V₂/V₁).
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What used to indicate the beginning of the solar system formation?
The beginning of solar system development is most likely indicated by the big bang theory. An explanation for how the universe grew from a high density starting state is provided by the Big Bang theory.
And temperature. The evolution of the observable universe from the earliest known times through its later large-scale form is explained by a variety of cosmological models of the Big Bang theory. The Sun and the things that circle it make up the solar system, which is gravitationally bound. The gravitational collapse of a massive interstellar molecular cloud gave it birth 4.6 billion years ago. 99.86% of the system's mass is in the Sun, with the planet holding the majority of the remaining mass.
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The nebular hypothesis is the most widely recognized cosmogony theory to explain how the Solar System started and evolved (as well as other planetary systems). It implies that gas and dust orbiting the Sun are what created the Solar System.
What has science discovered to be the strongest proof of the solar system's age?Over 70 different types of meteorites have undergone radiometric dating to ascertain their ages. The findings suggest that between 4.53 and 4.58 billion years ago, the Solar System and meteorites both began to develop.
What are the 4 phases of the development of the solar system?Scientists believe that the formation of terrestrial planets like Earth several billion years ago resulted from the coalescence of hot blobs of molten rock and metal from dust and gas. Before they developed into separate planets, they went through four stages of development: differentiation, cratering, flooding, and surface evolution.
What is the name of the solar system's nucleus?The solar nebula
4.6 billion years ago, the solar nebula, a cloud of gas and dust, gave rise to the Sun and the planets.
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find a taylor polynomial of order 3, t3(x) centered at a = 0 for the function f(x) = 9x + e −4x .
The Taylor polynomial of order 3, t3(x) centered at a = 0 for the function f(x) = 9x + e −4x is [tex]1 + 5x - 2x^2 + 10.66666x^3[/tex].
To find the Taylor polynomial of order 3, t3(x) centered at a = 0 for the function f(x) = 9x + e −4x, we need to find the function's value, first derivative, second derivative, and third derivative at a = 0, and then plug them into the Taylor series formula.
The function's value at a = 0 is:
f(0) = [tex]1 + 5x - 2x^2 + 10.66666x^3[/tex] = 0 + 1 = 1
The first derivative at a = 0 is:
f'(x) = 9 - [tex]4e^{(-4x)}[/tex]
f'(0) = 9 - [tex]4e^0[/tex] = 9 - 4 = 5
The second derivative at a = 0 is:
f''(x) = [tex]-16e^{(-4x)} + 4^{2x(-1)}[/tex]
f''(0) = [tex]-16e^{(-4(0))} + 4^{2(0)(-1)}[/tex] = -16 + 0 = -16
The third derivative at a = 0 is:
f'''(x) = [tex]-16e^{(-4(0))} + 4^{2(0)(-1)}[/tex]
f'''(0) = 64e^(-4(0)) + 4^3(0)(1) = 64 + 0 = 64
Now we can plug these values into the Taylor series formula:
t3(x) = [tex]f(0) + f'(0)x + (f''(0)/2!)x^2 + (f'''(0)/3!)x^3[/tex]
t3(x) = 1 + 5x + (-16/2!)[tex]x^2[/tex]+ (64/3!)[tex]x^3[/tex]
= 1 + 5x - 2x^2 + (64/6)[tex]x^3[/tex]
= 1 + 5x - 2x^2 + (64/6)[tex]x^3[/tex]
= 1 + 5x - 2x^2 + 10.66666[tex]x^3[/tex]
So the Taylor polynomial of order 3, t3(x) centered at a = 0 for the function f(x) = 9x + e −4x is:
t3(x) = [tex]1 + 5x - 2x^2 + 10.66666x^3[/tex]
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Why are there volcanoes along the west coast of the United States?
Answer: (Look in explanation)
Explanation:
There are volcanoes along the west coast of the United States because East and other places because they don't have global tectonic features (tectonic plate boundaries and hot spots in the mantle layer). Those cause volcano's activity to start.
Two objects are dropped from a bridge, an interval of 1. 0 s apart. Air resistance is negligible. During the time that both objects continue to fall, their separation.
A bridge drops two items at a distance of 1.0 seconds apart. There is very little air resistance. It implies that distance grows with passing time.
Describe resistance.Resistance seems to be the capacity of a chemical to prevent the movement of electrical charge. R, capitalized, serves as its emblem. The most common unit of resistance is the ohm, which is frequently expressed as a syllable and occasionally represented by that of the classical Greek letter omega.
What metrics are used to quantify resistance?Resistance is measured with a device like a multimeter, either analog or digital. Both kinds of instruments are valuable in a variety of applications since they can act a certain way as well as stream, voltage, or other factors.
let first object at t = 0,
initial velocity, u = 0,
1st ball, s1 = 1/2gt²
2nd ball s2 = 1/2 g(t - 1)²
separation between them,
s1 - s2 = 1/2 gt² - 1/2g(t - 1)²
= 1/2 g[t² - t² + 2t - 1]
= 1/2 g(2t - 1)
= separation ∝ (2t - 1)
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What is the kinetic energy of translation of one molecule of a gas at 300 K?
The kinetic energy of translation of one molecule of a gas at 300 K is 6.21 × 10⁻²¹ J.
Given that,
Temperature of ideal gas = 300 K
The kinetic translational energy of an ideal gas is mathematically given as,
Kinetic energy = 3/2 Kb × T
where,
Kb is Boltzmann constant
T is the temperature of the gas
Placing the values in the above formula, we have
⇒ 3/2 × 1.38× 10⁻²³ × 300 m² kg s⁻² K⁻¹ = 621 × 10⁻²³ J = 6.21 × 10⁻²¹ J
Thus, the required kinetic energy of translation of one molecule of a gas at 300 K is 6.21 × 10⁻²¹ J.
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A mixture of sand, salt, and sawdust was stirred in the water and the mixture was allowed to stand.
a) How might you collect the pure substance?
b) What is the sediment that forms?
c) the clear liquid was poured off and divided into 2 parts. One part was evaporated and the other was distilled.
1) what substances would be collected by distillation?
2) what would be collected by distillation?
3) what difference in properties allows the separation in both evaporation and distillation.
Give the answer and the reason and I will mark you as the brainiest whoever answers this.
Answer:
Explanation:
a) To collect the pure substance, you could use a separation technique such as filtration to remove the solid mixture of sand, salt, and sawdust from the water. The pure substance in this case would be the water.
b) The sediment that forms is the mixture of sand, salt, and sawdust that settles to the bottom of the container after the mixture is allowed to stand.
C)
1. If the clear liquid that was poured off is distilled, the substances that would be collected would depend on the boiling points of the substances present in the liquid. Substances with lower boiling points will vaporize and be collected first, while substances with higher boiling points will be collected later.
2. If the clear liquid is evaporated, the substance that would be collected is the liquid itself, in a more concentrated form.
3. The difference in properties that allows separation in both evaporation and distillation is the difference in boiling points of the substances present. In evaporation, the liquid with the lowest boiling point will evaporate first, while in distillation, the substance with the lowest boiling point will be vaporized and collected first.
A white pool ball of mass 200g is hit with a velocity of 1.6ms^-1 and collides with a stationary
striped ball of the same mass.
If the striped ball moves off with a velocity of 1.9ms^-1
then calculate or find:
a) Velocity of the white ball after the collision
a 0.5kg mass on a 1 m long string swings in a circle on a horiontal frictionless table at a steady speed of 2m/s. how much work does the tension on the string do on the mass
0 joule work done does the tension in the string do on the mass during one revolution.
What is a joule equal to?One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m). One newton equals a force that produces an acceleration of one meter per second (s) per second on a one kilogram (kg) mass.
What is the value of 1 unit in joule?Let us calculate the value of 1 unit of electrical energy in terms of the SI unit of energy which is joules. Converting the equation in terms of energy gives us: Energy consumed=Power×Time. One unit of electrical energy is equal to 3.6×106J of energy.
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If skater has 2000 joules of energy of potential energy at 4m how much energy the skater have at the bottom of the ramp
The kinetic energy of the skater at the bottom of the ramp is 2000 J.
What is the law of conservation of energy?The law of conservation of energy states energy can neither be created nor destroyed but can be converted from one form to another.
Mathematically, the formula for conservation of energy mechanical energy is given as;
P.E ( top ) = K.E ( bottom)
where;
P.E ( top ) is the potential energy of the object at the maximum heightK.E ( bottom ) is the kinetic energy of the object at bottom of the ramp.In the absence of friction, the potential energy of the skater at the maximum height is equal to his kinetic energy at the bottom of the ramp.
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a car is traveling at 20 m/s when the driver sees a ball roll into the street. from the time the driver applies the brakes, it takes 2 s for the car to come to a stop. What is the acceleration of the car during that period?
The acceleration of the car during that period is 10 m/s.
What is acceleration?The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily.
An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.
The velocity of the car traveling is 20 m/s
The time taken to stop the car is 2 seconds.
a = Δ v / Δt
a = 20 / 2 = 10 m/s
Therefore, the acceleration of the car during that period is 10 m/s.
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5.40×10^21 electrons flow through another appliance in 3.0minutes.
How much charge goes through the appliance?
A car travels 100m in 2s northbound. What is it’s velocity
Answer:
50m/s
Explanation:
velocity= displacement/time
v=100m/2
v=50m/s
Multiple Choice: Identify the choice that best completes the statement or answe
Which item would have more inertia?
1.
a. truck
b. paper
c. baseball
d. cat
The best item that would have more inertia is a truck. The correct option is a.
What is inertia?A feature of matter known as inertia is the ability to maintain either a state of rest or uniform motion in a straight line without the assistance of an external force. Case Studies of the Law of Inertia in Daily Life (Inertia of Motion) People slump forward when the bus abruptly stops.
The top part of the body continues to move forward due to inertia of motion when the driver of a bus abruptly brakes, but the bottom section of the body comes to rest along with the bus.
Therefore, the correct option is a. truck.
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The rate of decomposition of N2O3 (g) to NO2 (g) and NO (g) is followed by measuring NO2 at different times. The following data are obtained. [NO2 (mol/L) 0 0.193 0.316 0.427 0.784]
t (s) 0 884 1610 2460 50,000]
The reaction follows a first-order rate law.
Calculate the specific rate constant. Assume that after 50,000 s all the N2O3( g) had decomposed.
The reaction rate for this first order reaction is given as: r = - d[N₂O₃]/dt = k∙[N₂O₃] and ( [NO₂]e∙[NO]e ) / [N₂O₃]e = kf/ke = constant.
What is rate of decomposition?The average rate is given by change in concentration, ∆[A], divided by change in time, ∆t. Because A is reactant, minus sign is used in the calculation to make the rate a positive quantity.
As , ln[N₂O₃] = -k∙t + ln[N₂O₃]₀
ln( [N₂O₃]₀ / [N₂O₃] ) = k∙t
and N₂O₃ → NO₂ + NO
-∆[N₂O₃] = ∆[NO₂]
Now, - ( [N₂O₃]₀ - [N₂O₃] ) = [NO₂] - [NO₂]₀
As, [NO₂]₀=0
So,- [N₂O₃]₀ + [N₂O₃] ) = [NO₂]
[N₂O₃] = [N₂O₃]₀ - [NO₂]
Given, t=50000s [N₂O₃] = 0
So,0 = [N₂O₃]₀ - 0.784M
Hence, [N₂O₃]₀ = 0.784M
As, y = ln( [N₂O₃]₀ / [N₂O₃] )
= ln( 0.784M/(0.784M - [NO₃] )
we know, y = k∙t
so, k = ∑ y∙t / ∑ t²
Hence, k = 3.20×10⁻⁴ s⁻¹
r = k_f∙[N₂O₃] - k_r∙ [NO₂]∙[NO]
As, ( [NO₂]e∙[NO]e ) / [N₂O₃]e = constant
k_f∙[N₂O₃]e - k_r∙ [NO₂]e∙[NO]e = 0
So, ( [NO₂]e∙[NO]e ) / [N₂O₃]e = kf/ke = constant.
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What is the displacement for 9 meters north and 12 meters west
Answer:
15 meters
Explanation:
Displacement is a vector quantity that describes the change in position of an object. In this case, the displacement is the change in position of an object that has moved 9 meters north and 12 meters west.
To find the displacement, you need to find the resulting change in position of the object. This can be done by drawing a vector diagram and finding the vector that represents the net change in position.
To do this, you can draw a coordinate grid and mark the starting position of the object at the origin (0,0). Then, draw a vector that points 9 meters north and another vector that points 12 meters west. The displacement vector is the vector that connects the starting position to the final position, which is the sum of the two movement vectors.
In this case, the displacement vector would point in a direction that is slightly northwest of due west. Its length could be calculated using the Pythagorean theorem:
displacement = squaeroot((9^2) + (12^2))
displacement = 15 meters
So, the displacement of the object that moves 9 meters north and 12 meters west is 15 meters.
the magnetic field in the figure is decreasing at the rate 0.7 t/s . (figure 1)
The magnitude of the acceleration of a proton at rest at point a is [tex]3.35\times10^{5} m/s[/tex]
The concepts of Faraday's law, Ampere's law, Lenz's law, and the right-hand thumb rule are needed to solve this problem. First, determine the relationship between the electric field and the rate of change of the magnetic field using Faraday's law and Ampere's law. Discover the expression of a proton's acceleration at various sites by using the relationship between force and the dielectric field.
[tex]\frac{dB}{dT} =0.7T/sec[/tex]
F=ma=qE
a= [tex]\frac{qE}{m}[/tex]
a = [tex](\frac{qr}{2m})\times(\frac{dD}{dt} )[/tex]
a=[tex]\frac{1.6\times10^{-19}\times0.01\times0.7 }{2\times1.67\times10^{-27} }[/tex]m/[tex]sec^{2}[/tex]
a=[tex]3.35\times10^{5}[/tex]m/[tex]sec^{2}[/tex]
Direction:Up
a = 0 as r = 0
direction: No acceleration.
a=[tex]3.35\times10^{5}[/tex]m/[tex]sec^{2}[/tex]
Direction: Down
a=[tex]\frac{1.6\times10^{-19}\times0.02\times0.7 }{2\times1.67\times10^{-27} }[/tex]m/[tex]sec^{2}[/tex]
a=[tex]-6.7\times 10^{5}[/tex]m/[tex]sec^{2}[/tex]
Direction:Down.
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Physical causes of stress include ______. Check all that apply. A. anger. B. malnutrition. C. intense exercise. D. infection infection. E. grief.
Physical causes of stress include (B) malnutrition and (C) intense exercise.
As it is reported, malnutrition is a potent stress inducer that raises cortisol levels and has catabolic effects. Additionally, a lack of meals lessens the insulin-dependent anabolic activity of tissue synthesis.
Physical activity can strengthen your bones and muscles, help you maintain a healthy weight, increase your ability to carry out daily tasks, and improve your cognitive health.
Intense exercise can trigger a stress response by placing psychological and physical demands on the body, which can activate the sympathetic-adrenomedullary and hypothalamus-pituitary-adrenal (HPA) axes and cause the release of catabolic and stress hormones, inflammatory cytokines, and microbial molecules.
So the right options among the given are (B) malnutrition and (C) intense exercise.
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Two students push a car out of the mud. One pushes with 10 Newtons, the other with 7
Newtons. Will they overcome the friction force of 15 Newtons?
Answer:
The students will be able to overcome the friction force if the combined force they apply is greater than 15 Newtons. To find the combined force, you can add the forces applied by each student: 10 Newtons + 7 Newtons = 17 Newtons. Since 17 Newtons is greater than 15 Newtons, the students will be able to overcome the friction force and push the car out of the mud.
Explanation:
A television that is 83% efficient provides 4,600J of useful energy.
How much energy does it use?
Answer: 5542J (rounded)
Explanation:
we need to work out 100% energythat is done by dividing 4600 by 834600/83 = 55.42155.421 x 100=5542.168I dont know what you need to round your answer to but 5542.168 is my final answerTwo plane mirrors meet at a 135º angle (see Figure 1). If light rays strike one mirror at an angle of 38 º, as shown, at what angle ϕ do they leave the second mirror?
The light rays leave the second mirror at an angle of 173º.
The angle of incidence of light rays striking the first mirror is 38º. When light strikes a mirror, the angle of incidence is equal to the angle of reflection.
So, the angle of reflection of the light rays striking the first mirror is also 38º.
The two mirrors form a 135º angle, and the angle of reflection of the light rays is 38º. So, if we add those two angles together, we get:
38º + 135º = 173º
The light rays leave the second mirror at an angle of 173º. Therefore, the angle ϕ is equal to 173º.
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Mr. Starr pushed a cart full of groceries to his car. After emptying the cart, he pushed it back to the store. He pushed the cart
at a speed of 2 meters per second each way. Which is the best prediction? (1 point)
The cart had the same kinetic energy going each way.
The cart's kinetic energy depends on Mr. Starr's mass.
When it was empty, the cart had less kinetic energy.
When it was full, the cart had less kinetic energy.
Answer:
The shopping cart has less kinetic energy when it is empty.
Explanation:
When an object of mass [tex]m[/tex] travels at a speed of [tex]v[/tex], the kinetic energy of that object would be [tex](1/2)\, m\, v^{2}[/tex].
In this question, the speed of the shopping cart is fixed ([tex]v = 2\; {\rm m\cdot s^{-1}}[/tex].) Kinetic energy would be proportional to the mass [tex]m[/tex] of the shopping cart (including that of its contents.)
The mass of the shopping cart is lower when it is empty on the way back to the store. Therefore, the kinetic energy of the shopping cart would also be lower than when it was full.
Answer:
(Question) A city gets its electricity from a dam, where water is stored in a reservoir. How does the water provide the city with its power?
(Answer) Potential energy in the water becomes kinetic energy as it moves through turbines, which turn kinetic energy into mechanical energy that spins a generator, which changes mechanical energy into electricity.
(Question) An acorn rolls off a roof and falls to the ground. Which statement best describes the change in energy?
(Answer) The acorn’s potential energy decreases as its kinetic energy increases.
(Question) An airplane carries 320 passengers from Phoenix to Los Angeles flying at an average speed of 490 miles per hour. On the return flight, the plane carries 164 passengers and travels at the same average speed. What happens to the plane’s kinetic energy?
(Answer) On the return flight, the plane has less kinetic energy.
(Question) A racehorse is running at 42 miles per hour, equivalent to 18.8 meters per second. The horse and its jockey have a combined mass of 512 kilograms. How much kinetic energy do they have?
(Answer) 90,480.6 J
(Question) Which object has kinetic energy?
(Answer) balloon rising in the sky
(Question) Mr. Starr pushed a cart full of groceries to his car. After emptying the cart, he pushed it back to the store. He pushed the cart at a speed of 2 meters per second each way. Which is the best prediction?
(Answer) When it was empty, the cart had less kinetic energy.
(Question) A student fires a toy rocket into the sky. When does the rocket have the most potential energy?
(Answer) when the rocket reaches its highest point
(Question) What is the best description of one billiard ball hitting a second billiard ball?
(Answer) Most of the kinetic energy in the first ball is transferred to the second ball.
(Question) A roller-coaster car is at the top of a hill. The car and its passengers have a combined mass of 1,088 kilograms. If the hill is 62 meters tall, how much potential energy does the car have?
(Answer) 661,068.8 J
(Question) A roller-coaster is at the top of a 62-meter hill. The car and its passengers have a total mass of 1,088 kilograms. By the time the car reaches the bottom of the hill, its speed is 74 miles per hour (33 meters per second). How much kinetic energy does the car have at the bottom of the hill?
(Answer) 592,416 J
(Question) A diagram is drawn showing a swing set with a swing pulled backward prior to release. The diagram shows how the swing will move forward and then backward after it is initially released. At which point in the diagram is all of the energy gravitational potential energy?
(Answer) when the swing is pulled back prior to release
(Question) essay
(Answer) good luck
(Question) essay
(Answer) good luck
Explanation:
I just completed this assignment UwU
Calculate the magnitude of the impulse applied to a 0. 75-kilogram cart to change its velocity from 0. 50 meter per second east to 2. 00 meters per second east. [show all work, including the equation and substitution with units. ].
The impulse's strength would be 1.125 N s in the direction of the east.
We are given that,
Final velocity =V final = 2.00m/s
Initial velocity = V initial = 0.50m/s
ΔV = V final - V initial
ΔV = 2.00 - 0.50
ΔV = 1.50 towards East
Therefore , impulse can be calculated as ,
impulse = change of linear momentum
impulse = mass × change in velocity
impulse = 0.75 ×1.5
impulse = 1.125 N s towards East
Therefore, the impulse's strength would be 1.125 N s in the direction of the east.
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Impulse's strength would be 1.125 N s in the east direction.
As per the given information:
Final velocity =V final is 2.00m/s
Initial velocity = V initial is 0.50m/s
ΔV = V final - V initial
ΔV = 2.00 - 0.50
ΔV = 1.50 towards East direction
The total impulse can be calculated as ,
Impulse = change of linear momentum
Impulse = mass × change in velocity
Impulse = 0.75 ×1.5
Impulse = 1.125 N s towards East
Hence, the impulse's strength would be 1.125 N s in the direction of the east.
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suppose the distance from the lens system of the eye (cornea + lens) to the retina is 17 mm.
A) The power of the lens be when looking at distant objects is 58.823 D
B) The power of the lens be when looking at an object 20.0 cm from the eye is 63.823 D
According to the Dictionary of Ophthalmic Optics, the definition is stated thus: “The straight line measurement in millimeters (z axis) from the back or ocular surface vertex of a mounted spectacle lens to the apex of the cornea.” For a more practical definition, it is the straight line distance in millimeters from the back surface of any lens (mounted in spectacles or not) to the apex of the cornea.
(a) Power 1/p
= 1/f
= 1/ .017 m
= 58.823 D
(b) 1/q + 1/p
= (1/0.20 m) + (1/.017 m)
= 63.823 D
The given question is incomplete, the complete question is
Suppose the distance from the lens system of the eye (cornea +lens) to the retina is 17 mm.
(a) What must the power of the lens be when looking at distant objects?
(b) What must the power of the lens be when looking at an object 20.0 cm from the eye?
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A tennis ball and a solid steel ball of the same diameter are dropped at the same time. Which ball has the greater acceleration
A tennis ball and a solid steel ball of the same diameter are dropped at the same time. The solid steel ball has the greater acceleration.
If two things of the same size and different materials are present, the heavy (higher density) object will fall first. This is because the drag and buoyancy forces on both objects will be the same, but the gravitational pull on the heavier object will be stronger.
Gravity causes things to descend to the ground more quickly. Velocity, which is a measure of the speed and direction of motion, is modified by acceleration. An object falls faster toward the ground as it falls in free fall for a longer period of time. Therefore, a solid steel ball has a high mass and is under more force.
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An action/reaction pair of forces ....
Select all that are True.
act on the same object.
point in the opposite direction.
act on two different objects.
point in the same direction.
Action-reaction pairs are forces that operate on separate objects in opposing directions and at identical magnitudes. Never do they affect the same thing. We learn that forces are interactions from Newton's third law.
An action-reaction pair is what?When two bodies contact, they exert an equal and opposite force on one another in accordance with Newton's third rule of motion. Action-reaction forces are made up of these forces.
What do action and reaction forces look like in practice?Think about how a baseball bat and a ball interact, for instance. The bat forces the ball to the right while the baseball forces the bat to the left. The action-reaction force pair is made up of these two forces acting on two separate objects together.
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What is the 3rd Law of coilation?
1. Bounce
2. Gravity
3. Re-flux
Answer:
Re-flux
Explanation:
a galaxy with little cool gas or dust and no evidence of ongoing star formation is most likely a(n)
A galaxy with little cool gas or dust and no evidence of ongoing star formation is most likely an elliptical galaxies.
Most brilliant galaxies are spiral galaxies that have been compressed. But a sizable portion of brilliant galaxies are elliptical galaxies. Elliptical galaxies have relatively little gas and dust, and what little gas and dust they do have is hot and diffuse. As a result, star formation is not currently occurring in elliptical galaxies. Old Population II stars make up the stars in elliptical galaxies. Ellipsoidal galaxies Do Not rotate quickly, in contrast to the disks of spiral and lenticular galaxies.The majority of elliptical galaxies are made up of older, low-mass stars, have a scant interstellar medium, little star formation, and are frequently ringed by numerous globular clusters. Elliptical galaxies aren't the most prevalent type of galaxy in the cosmos, accounting for only about 10-15% of galaxies in the Virgo Supercluster. They are more frequently discovered close to the galactic cluster centers.
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Name two types of natural disasters that often occur at plate boundaries
Answer:
Earthquakes and tsunamis
a voltaic cell is based on ag+(aq)/ag(s) and fe3+(aq)/fe2+(aq) half-cells. A.) Which reaction occurs at the cathode, and which at the anode of the cell?Express your answer as a chemical equation. Identify all of the phases in your answer. B.) Express your answer as a chemical equation. Identify all of the phases in your answer.
A) The reaction that occurs at the cathode of the cell is the reduction of Ag+ ions to Ag metal:
Ag+(aq) + e- → Ag(s)
The reaction that occurs at the anode of the cell is the oxidation of Fe2+ ions to Fe3+ ions:
Fe2+(aq) → Fe3+(aq) + e-
B) The overall reaction for the voltaic cell can be obtained by combining the half-cell reactions:
Ag+(aq) + Fe2+(aq) → Ag(s) + Fe3+(aq)
Note that this overall reaction is the sum of the two half-cell reactions. The overall cell reaction is not a redox reaction but it's a combination of two different oxidation-reduction reactions.
In this case, Ag+(aq) is the oxidizing agent and Fe2+(aq) is the reducing agent on the cathode side, and Fe3+(aq) is the oxidizing agent on the anode side.
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a man traveled 2.2 in to the store in 5.0 minutes and then stayed at the store for 10.0 minutes. he than traveled 6.1 kn to the bank in 12 minutes and stayed in the bank for 5.0 minutes. he than travelled 4.7 km to his home in 7.0 minutes. what was his average speed in units of km/min
The speed of the man is obtained as 0.54 Km/min.
What is the average speed?One of the first things that must come to our minds is that fact that speed is a scalar quantity and as such we do not look at the direction of the movement of the object but just the algebraic sum.
We then have that;
Total distance = 2.2 + 6.1 + 4.7 = 13 Km
Total time = 5 + 12 + 7 = 24 min
Note that we do not count the times that were spent in the store without moving
The speed is now; = 13 Km/24 min
= 0.54 Km/min
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