Answer:
a) Dalton
Explanation:
In Dalton's model atoms are imagined as tiny balls. This model was introduced in the year 1803 by John Dalton.
Please disregard. Didn't mean to post a question.
Oops.
That's my bad then.
Part 1- An ideal gas, initially at a volume of 1.71429 L and pressure of 7 kPa, undergoes isothermal expansion until its volume is 6 L and its pressure is 2 kPa. Calculate the work done by the gas during this process. Answer in units of J.
Part 2- Find the heat added to the gas during this process.
Answer in units of J.
Part 1- The work done by the gas during this process will be 5.65 ×10⁻³ kJ.
Part 2-The heat added to the gas during this process will be 5.65 ×10×10⁻³ kJ.
What is work done by the gas?Work is the product of pressure p and volumes V during a volume change for such a gas. The work seems to be the area under the curve that indicates how the state changes.
The work done under the isothermal process is;
[tex]\rm W= P_1V_1 log_e(\frac{P_1}{P_2} )\\\\ W= 7 \times 1.71429 \times 10^{-3} log_e(\frac{7 }{2} )\\\\\ W= 0.0044 \ kJ[/tex]
For the isothermal process;
ΔU=0
[tex]\rm \triangle Q = \triangle E + \triangle W \\\\ Q = 0 + 5.65 \times 10^{-3}\\\\ Q = 5.65 \TIMES 10^{-3} \ kJ[/tex]
Hence, the work done, and the heat added by the gas during this process will be 5.65 ×10⁻³ kJ and 5.65 ×10×10⁻³ kJ respectively.
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I have got a project about hacks so i need help
What Are hacks not computeer hacks like hack in real life
Hacks in real life are tricks to help solve a problem with a simple solution.
Say for example, add a pinch of salt to whip egg white faster.
Answer:
you mean life hack ?...
Explanation:
well life hack is a strategy adopted in order to manage one's time and daily activities in a more efficient way.
life hacks are intended to improve your life e.g setting an alarm clock in order to wake up on time or putting a stoking over the end of your vacuum cleaner to help you find a tiny item etc.
Hope this helps
Often times we think about insulation, we think about keeping cold items cold, such as drinks in an ice chest or the cool temperature in your home. But insulation also keeps things high! The same thermos that keeps your water cold keep your hot chocolate worm. How was that possible?
Answer:
So, insulation essentially works by creating a sort of barrier between the hot and the cold object. This barrier helps to reduce heat transfer by either reflecting the thermal radiation or by decreasing thermal conduction and convection from one object to the other.
Answer:
So, insulation essentially works by creating a sort of barrier between the hot and the cold object. This barrier helps to reduce heat transfer by either reflecting the thermal radiation or by decreasing thermal conduction and convection from one object to the other.
It is important to be careful when using nonrenewable resources because
A
there is a limited supply of them and we can’t make any more.
B
harnessing their energy is a very dangerous process.
C
they are more likely to produce excess thermal energy that we can’t use.
D
there is a possibility of finding dinosaur bones in petroleum or coal deposits.
Answer:
The answer is A because it is a resource that takes many many years to make more of and we cannot make it ourselves
Calculate the resistance of a lamp if the current through it is 0. 4 A and the potential differnces across it is 8 V
Answer:
20 volts per amp (ohms), sorry the doesn't let me to type below than 20 characters
Based on the tug of war pictured below, what is the net force? –190 n 10 n –10 n 190 n
The net force in the tug of war which is shown in the picture provided will be 0N.
What is a Force?This is defined as the power exerted on a body and the unit of Force is referred to as Newton.
In the tug of war, the net force is gotten by summing up all the forces.
–190N + 10N –10N + 190N = 0N.
Therefore the net force is 0N.
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Answer:
B. 10 N
Explanation:
EGDE 2022
The energy emitted from a single photon is 1.68 x 10-27 Joules. Which of the following is most likely the type of electromagnetic wave that was
emitted?
Answer:
I think the answer is gamma or x ray
find out how was life like in ancient China by exploring the engineering and metal technology of Ancient China. Gather some points about the building of Grand Canal.
The grand canal was built to make easier the transportation of grains to the power center of north china.
How was the Grand Canal built?The canal was built in order to connect the Yellow River in the north with the Yangtze River in the south. This canal is built for making easier the transportion of grain from the south to the centers of north China. The total length of the Grand Canal is 1,776 km.
So we can conclude that the grand canal was built to make easier the transportation of grains to the power center of north china.
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What does the law of reflection describe?
a a) Wavelength b) Bending of light c) Angles d) Mirrors only e) Laser light
Answer:
e
Explanation:
I think hope it's correct
Which missing item would complete this alpha decay reaction? a. b. c. d. e.
Alpha decay is the term that is used to describe a type of radioactive decay that involves the evolution of a helium nucleus.
What is alpha decay?The term alpha decay is the term that is used to describe a type of radioactive decay that involves the evolution of a helium nucleus. In this case the question is incomplete but I will try to paint a general picture of alpha decay.
The general equation for an alpha decay will produce a daughter nucleus that has an atomic mass less by four units and atomic number that is less by two units.
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As of 2022, what is the total population of the planet?.
Answer:
the total population of the planet is 248
Pleaseeee helppp!! The picture is below with answer choices
Answer:
Desiree, did you really take a picture of your computer with your phone? :0 , print screen, (prt sc) and open paint, or the clip tool to paste pic into where you choose. no lines needed. It's harder to read the pictures when you take a phone picture. just screen capture, it's clean, and neat.
Explanation:
conduction is how quickly the temp equalize. A is the best conductor.
FORENSICS!!
What are physical properties for each piece of evidence?
1. Blood
2. Body
3. gun
4. White powder
5. cup
6. Dark hair strand
7. Shell casing
8. Light hair strand
Which of the following is NOT one of the dialectical tensions that Baxter and Montgomery address in their theory of relational dialectics?
A) conventionality-uniqueness B) revelation-concealment C) inclusion-seclusion D) judgement-acceptance
Judgement-acceptance is NOT one of the dialectical tensions that Baxter and Montgomery address in their theory of relational dialectics.
What is the Baxter and Montgomery theory?The Baxter and Montgomery theory is a model used in psychology to describe different parts of dialectics.
The Baxter and Montgomery theory put special emphasis on the existence of different layers (dimensions) in dialectics.
The Baxter and Montgomery theory is used to treat dialectical tensions by selecting autonomy over interdependence.
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Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 10^9 N · m^2/C^2 and the elemental charge is 1.6×10^−19C. Answer in units of N.
The electric force between these two electrons will be 2.8 ×10⁻¹⁹ C. The concept of electric force is used in the given problem.
What is electric force?Force on the particle is defined as the application of the force field of one particle on another particle. It is a type of virtual force.
The given data in the problem is;
F is the electric force
K is the Coulomb constant = 9 × 10⁹ Nm²C²
q is the elemental charge = 1.6×10^⁻¹⁹ C
The electric force is found as;
[tex]\rm F=K\frac{Q_1Q_2}{r^2} \\\\ \rm F=9 \times 10^9 \frac{(1.6 \times 10^{-9} \times 1.6 \times 10^{-9}}{((2.82 \times 10^{-15}^2} ) \\\\ \rm F=2.8 \times 10^{-9}\ N[/tex]
Hence the electric force between these two electrons will be 2.8 ×10⁻¹⁹ C.
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What types are used in our homes? *
A. Open circuits
B. Series circuits
C. Parallel circuits
D. None of the Above
Answer:
A parallel circuit is used generally.
Explanation:
Because of that, each appliance gets the same potential difference (voltage ). So that they work better and outlets, switches, and light fixtures are wired in such a way that the hot and neutral wires maintain a continuous circuit pathway independent from the individual devices that draw their power from the circuit.
hope this helps.
A heat conducting rod consists of an aluminum section 0.20 m long and a copper section 0.70 M long both sections have a cross-sectional area of 4 X 10 -4 m2 The aluminum end of the rod is maintained at a temperature of 30 Celsius while the copper and is maintained at 230 Celsius what is the temperature at the point where the aluminum and copper sections meet the thermoconductivity of aluminum is 205W/M k. copper is a 385W/M.K.
A.74°c
B.86°c
C.100°c
D.80°c
E.93°c
The starting materials in a nuclear change have a total mass of 2.3465 × 10–27 kg. after the change, the resulting materials have a mass of 2.3148 × 10–27 kg. how much energy was released during the change? 2.85 × 10–12 j 2.08 × 10–10 j 2.11 × 10–10 j 8.56 × 10–4 j
The energy released during the nuclear change is 2.853*10^(-12) J.
What is Nuclear change?
A nuclear change -- involves changes in nuclear structure, such as fission (splitting) of a nucleus or an atom, or fusion (combining) of neutrons and protons to form heavier atoms
Given that,
Total mass
[tex]m=2.3465\times 10^{-27}\ kg[/tex]
After change , the mass of resulting materials
[tex]m'=2.3148\times 10^{-27}\ kg[/tex]
Using the Einstein's mass energy equation
[tex]E=mc^2[/tex]
The energy released during the change is given by
[tex]\Delta E=mc^2[/tex]
Where, [tex]\Delta m[/tex] is the change of mass in the process
c = speed of light
The change in mass
[tex]\Delta m=m-m'[/tex]
[tex]\Delta m=2.3465\times 10^{-27}-2.3148\times 10^{-27}[/tex]
[tex]\Delta m =0.0317\times 10^{-27}\ kg[/tex]
We substitute the value into the formula
[tex]\Delta E=0.0317\times 10^{-27}\times (3\times 10^8)^2[/tex]
[tex]\Delta E=2.853\ti,es 10^{-12}\ J[/tex]
Hence, The energy released during the change is 2.853*10^(-12) J.
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Answer:
A
Explanation:
An apple is released from rest 500 m above the ground. Due to the combined forces of air resistance and gravity, it has a speed of 40 m s when it reaches the ground. What percentage of the initial mechanical energy of the apple-Earth system was dissipated due to air resistance
Answer:
84%
Explanation:
Find a ratio
**Will Give Brainliest If Answered Correctly**
Why is data sent digitally from space probes instead of using an analog device?
Which is not an example of a scalar?
a) 6.2 m north
b) 2 ft/s
c) 3 kg
d) -100 o C
Answer:
b) 2ft/s
Explanation:
A scalar has only magintude, not direction
6.2m, 3kg, and -100 o C are all scalars because they only have magnitude.
2ft/s is not a scalar because it has a direction.
For further Reflection
# Do you find Legrain's arguments and examples compel.
ling? Could cultural exchanges such as those detailed in
Legrain's article be more complicated or problematic than
Legrain proposed? Consider how other cultural products-
perhaps those from Africa or Asia--might either uphold or
undermine Legrain's thesis on globalization
Source Philippe Legrain. "Cultural Globa ization
Answer:
Possible Answers:
How the points made can be more complicated or problematic:
The author seems to be focusing on pop culture or pastime activities.
The author isn’t taking into account economic differences between the average citizens of different nations.
All of these examples still follow the American idea of capitalism, not other economic systems.
Explanation:
pf
A white dwarf is ________.an early stage of a neutron stara precursor to a black holea brown dwarf that has exhausted its fuel for nuclear fusionwhat most stars become when they die
Where must the moon be in its orbit for the full moon phase to be visible?.
Answer:
On the side of the Earth opposite from the sun
Explanation:
As our Moon continues its orbit counterclockwise around Earth (viewed from above the north pole), more and more of the illuminated part of the Moon becomes visible to us, until it reaches the “full Moon” stage. A full Moon occurs when the Moon has moved in its orbit so that Earth is “between” the Moon and the Sun.
Answer: the sun:
Explanation:
the moon reflects the light coming from the sun. hope this helps. Can I pls have brainllyistbrainllyistbrainllyistbrainllyist
Which factor suggests that an elliptical galaxy will form?
A. formed in Isolation
B. Higher angular momentum
C. Faster cooling rate
The factor that suggests that an elliptical galaxy will form is : ( B ) Higher angular momentum
Formation of elliptical galaxyThe formation of elliptical galaxy occurs when two sprial corals collide with eachother which causes the spiral corals to lose their shape forming elliptical galaxies in the process. the collision of the spiral corals is made possible by angular momentum possesed by the spiral corals.
Hence we can conclude that The factor that suggests that an elliptical galaxy will form is Higher angular momentum
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How many kilowatts does it take to charge an electric car.
Answer:
The consumption of electric cars depends on the model and the manufacturer. Most electric vehicles can cover up to 100 kilometres with 15 kWh
Just a question anybody playing minècraft here?
Answer:
yes/nope
Explanation:
............... :)
Why electromagnetic energy is renewable? Explain.
A block is pushed against the spring with spring constant 15 kN/m (located on the lefthand side of the track) and compresses the spring a distance 5 cm from its equilibrium position (as shown in the figure below). The block starts at rest, is accelerated by the compressed spring, and slides across a frictionless track (as shown in the figure below). It leaves the track horizontally, flies through the air, and subsequently strikes the ground. The acceleration of gravity is 9.81 m/s
a) What is the speed v of the block when it
leaves the track?
Answer in units of m/s.
b) What is the horizontal distance x the block
travels in the air?
Answer in units of m
c) What is the total speed of the block when it
hits the ground?
Answer in units of m/s
Answer:
F = -K x = 15 kN/m " .05 m = .75 kN = 750 N
W = 1/2 K X^2 original potential energy of block
W = 1/2 * 15 Kn/m * .0025 m^2 = 18.75 J
One cannot calculate speed of block without knowing mass of block.