Answers
Answer:
2. The temperature doubles.
014) 48.6 J
015) 13,700 J
016) 5.94×10⁻²¹ J
Explanation:
PV = nRT
P and n are constant.
nR/P = k
V/T = k
If the volume doubles, the temperature also doubles.
014) The kinetic energy per atom is:
KE = 3/2 kT
KE = 3/2 (1.38×10⁻²³ J/K) (21 + 273) K
KE = 6.09×10⁻²¹ J
The total kinetic energy is:
KE = (6.09×10⁻²¹ J) (7.99×10²¹)
KE = 48.6 J
016) The kinetic energy per atom is:
KE = 3/2 kT
KE = 3/2 (1.38×10⁻²³ J/K) (14 + 273) K
KE = 5.94×10⁻²¹ J
015) The total kinetic energy is:
KE = (5.94×10⁻²¹ J) (3.82 mol) (6.02×10²³ atom/mol)
KE = 13,700 J
Related Questions
what are the physical changes on water
Answers
car 2 has a mass of 150 kg and moves westward towards car 3 at a velocity of 2.2 m/s. car 3 has a mass of 265 kg and moves eastward towards car 2 at a velocity of 1.5 m/s. calculate the force of Car 3 and Car 2. dunno if I phrased this right so I included a screenshot too. pls help asap will give brainliest
Answers
Answer:
The force of car 3 on car 2 ≈ 1810.82 N
Explanation:
The equation for the change in momentum of the two cars are;
Conservation of linear momentum
150( 2.2 - v) = 265(1.5-v)
150 × 2.2 - 265×1.5 = (150+265)v
150 × 2.2 - 265×1.5 = -67.5 = 415×v
∴ v = -67.5/415 = -0.1627 m/s West = 0.1627 m/s East
The impulse of the net force is the amount of momentum change experienced given by the equation;
Impulse force = [tex]m \times v_f[/tex] - [tex]m \times v_0[/tex]
Where;
[tex]v_f[/tex] = The final velocity
[tex]v_0[/tex] = The initial velocity
For the the 265 kg mass, we have;
[tex]v_f[/tex] = 0.1627 m/s
[tex]v_0[/tex] = 1.5 m/s
Which gives the impulse a s F×Δt = 265×0.1627 - 265×1.5 = -354.38 kg·m/s
The change in kinetic energy of the collision = 1/2×265×(0.1627^2 - 1.5^2) =-294.62 J
Whereby the distance moved in one second is 0.1627 m, we have;
Work done = Force × Distance = Force × 0.1627 = 294.62
Force = 294.62/0.1627 = 1810.82 N.
Plz Help me with this
Answers
Answer:
Cools ; size
Explanation:
The rate at which magma cools determines the size of the crystals in the new rock. Igneous rocks are formed from the cooling and solidification of molten magma which finds its way to the surface or depth of very low pressure beneath the surface. This place or depth of cooling of magma affects the cooling rate and hence the size of the crystals formed. Igneous rocks formed at depths below the surface have more time to cool and allows more time for Crystal growth and hence produce coarse grained crystal grains called Intrusive igneous rocks which have significantly larger crystals than those formed on the surface which cools rapidly and allowing very little time for crystal growth giving rise to the formation of fine grained crystals and are called extrusive igneous rocks.
And observer reviews for identical objects that are traveling at speed close to the speed of light in their legs be used to rank the objects according to their speeds A. No the Lankes of the four objects should be the same regardless of the speed B. Yes the shortest object is traveling the fastest C. Yes the longest object is traveling the fastest D. No the length of each object demands on the frame of reference of the observer
Answers
Answer:
C :)
Explanation:
conditions of equilibrium of parallel coplanar forces
Answers
Answer:
Bruh............
Explanation:
A -0.00125 C charge is placed 3.62 m from a +0.00333 C charge. What is the magnitude of the electric force between them?
Remember, magnitudes are positive.
[?] N
Answers
Answer: 2858.7726N
Explanation:
Given that :
Charge 1 (q1) = -0.00125 C
Charge 2 (q2) = +0.00333 C
Distance (r) = 3.62 m
According to columb's Law: The magnitude of the force between any two charged objects :
Fe = (Kq1q2) / r^2
Coloumb's constant(k) = 9×10^9 Nm^2/C^2
Fe = (9×10^9 * 0.00125 * 0.00333) / 3.62^2
Fe = (0.0000374625 * 10^9) / 13.1044
Fe = 37462.5 / 13.1044
Fe = 2858.7726N
Answer:
2858.7726 N
Explanation:
acellus
Which of the following pure elements exist as liquids at normal Earth temperatures?
Answers
Answer:
The only liquid elements at standard temperature and pressure are bromine (Br) and mercury (Hg).
Write a report on the lap experiment: Motion with Constant Acceleration
Answers
Answer:
Purpose: To observe how an object’s position and velocity change while it is moving with a constant acceleration.
Question: How does an object’s position and velocity change as the object accelerates?
Hypothesis: If the fan speed increases, then the acceleration of the cart increases, because a greater fan speed supplies more energy to move the cart.
Variables:
• Independent variable: fan speed
• Dependent variable: acceleration of the cart
• Controlled variables: mass
Materials:
• Cart with Fan (1 kg)
• CM ruler (1 cm)
• Stop watch (0.0 cm pe sec)
• Flag
Procedure:
1. Use the setup on “Force and Fan Carts” Gizmo.
2. First, put the fan speed on low and no friction surface.
3. Press the start button and record the final time when the cart crosses the finished line. Record on table B.
4. Then, click on the data tab to record the speed data, total distance, average velocity, and acceleration. Record on table A and B.
5. After, observe the position vs. time graph with the speed and line graph toggled. Record on table C.
6. Repeat steps 2-5 on fan speed on medium and high with no friction surface.
7. Next, reset and put fan speed on low.
8. Press start and pause on 4 seconds.
9. On the same trial turn off the fan speed and hit start again.
10. Observe the graph and write observations on table D.
Analysis and Conclusion:
In conclusion, my hypothesis matches the data, because the data shows that increasing the fan speed increases the acceleration of the cart. The trends for all fan speeds are linear slope for speed. The higher the fan speed, the less time it took for the cart to cross the finish line.
Data:
Explanation:
Sorry can’t copy and paste results
Answer:
for that pervious answer why cant we copy and paste?
Explanation:
What has resulted in significant climate changes?
A. Plate tectonics
B. Doppler effects
C. Water pollution
Answers
Answer:A
Explanation:glass window allow light in but trap the heat inside
Plate tectonics cause climate change when moved together
Example: you rub your foot across the carpet causing heat
A boy on a chairlift moving parallel to the mountain slope at a speed of +15 m/s watches a skier going straight down the mountain with a speed of -35 m/s. What is the velocity of the skier relative to the chairlift? A. -50 m/s B. -35 m/s C. -20 m/s D. +15 m/s E. +50 m/s
Answers
Answer:
A. -50 m/s
Explanation:
Given
Velocity of Chairlift = +15m/s
Velocity of Skier = -35m/s
Required
Determine the velocity of the skier relative to the chairlift
Basically, relative velocity is the difference between the two velocities;
Having said that;
Relative velocity of the skier relative to the chairlift = Velocity of the Skier - Velocity of the Chairlift
Relative velocity of the skier relative to the chairlift = -35m/s - (+15m/s)
Open bracket
Relative velocity of the skier relative to the chairlift = -35m/s - 15m/s
Relative velocity of the skier relative to the chairlift = -50
By which mechanism does older oceanic rock move at a ridge?
Answers
Answer:
The ridge subducts and moves the rock
Explanation:
You got the right answer
Help me please, help
Answers
Answer:
455,000 Pa
Explanation:
PV = nRT
If n is constant:
PV / T = PV / T
(101,325 Pa) (718 mL) / (273 K) = P (175 mL) / (26 + 273) K
P = 455,000 Pa
explain what a insulator , conductor, and semi conductor is and what it does
Answers
Conductors are the substance that transmits heat or electricity through them, insulators are basically the opposite. They prevent heat or electricity from passing through them. Semiconductors can act as either a conductor or an insulator under different conditions.
1) (c)Describe how you would use the apparatus and what readings would you take?
I need the answer only for the '' c'' part
Answers
Answer:
A
Explanation:
How many hydrogen atoms are there in the following compound: 4CHA (2 points)
Select one:
a 4
b. 8
c. 12
d. 16
Answers
Answer:
4
Explanation:
The number 4 that is infront of the CHA(4CHA) means to say that there are 4C 4H and 4A
Tip:the number infront of a equation is call the coefficient
Help me please savior
Answers
Answer:
-16°C
Explanation:
PV = nRT
V and n are constant.
P / T = P / T
(2 atm + 1 atm) / (266 K) = (1.9 atm + 1 atm) / T
T = 257.1 K
T = -16°C
"How does mass affect thermal energy transfer?
Answers
Answer:
The greater the mass of a substance the more thermal energy. The thermal energy of a substance depends on the temperature and mass of that substance.
Explanation:
Answer:
Explanation:
If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature affects thermal energy, but temperature isn't the same thing as thermal energy. That's because an object's mass also affects its thermal energy.
Which of the following is an accurate statement? A. Step-up voltage transformers have fewer turns in the primary that in the secondary winding. B. aC generators produce current that's pulsating but always remains positive C. Step-down voltage transformers have a different number of turns in the primary than in the secondary winding, so they change the incoming collage to a higher voltage D. DC generators produce current with a voltage that changes from positive to negative
Answers
Answer:
Option A is an accurate one.
Explanation:
A transformer being considered as a step-up transformer during which the performance (supplementary) voltage becomes stronger than that of the input (main) impedance of it. This kind of transformer reduces the electrical output to constantly keep the product input as well as power consumption equivalent.The other provided alternative is not related to the information provided there. So the response to the above seems to be the correct one.
a ball is projected with a certain angle with initial velocity u. it covers horizontal range R. With what initial velocity it must be projected keeping the angle of projection same so its horizontal range becomes 2.25R
Answers
Answer:
1.5 u
Explanation:
The range equation is:
R = u² sin(2θ) / g
When u = v, R = 2.25 R.
2.25 R = v² sin(2θ) / g
2.25 u² sin(2θ) / g = v² sin(2θ) / g
2.25 u² = v²
1.5 u = v
Which choice most accurately defines resistance and voltage of a circuit?
Resistance can be defined as the potential difference between two points in a circuit, while voltage is the amount of electrons moving through a point in a circuit every second.
Voltage can be defined as the potential difference between two points in a circuit, while resistance is the amount of electrons moving through a point in a circuit every second.
Voltage can be defined as the potential difference between two points in a circuit, while resistance opposes the flow of electrons in a circuit.
Resistance can be defined as the potential difference between two points in a circuit, while voltage opposes the flow of electrons in a circuit.
Answers
Answer:
Resistance can be defined as the potential difference between two points in a circuit, while voltage is the amount of electrons moving through a point in a circuit every second.
Explanation:
A study finds that there is a positive correlation between height and math test scores. The researcher concludes that taller people are better at math. However, another researcher points out that height is also correlated with age, and age is correlated with greater knowledge of math. What issue does this example represent?
Answers
Answer:
Spurious relationship
Explanation:
In statistics a spurious relationship is a correlated mathematical relationship of covariation between two variables or more which by themselves have no cause and effect relationship as a result of a coincidence or the existence of a third or confounding factor
The variables have covariation due to their correlation but they don't have a cause and effect relationship
An example of a spurious relationship is the increase in ice cream sales when there is an observed increase in the rate of drowning.
0
Which of the following can you conclude about a particle labeled
Check all that apply.
O A. It has one electron.
OB. It has one neutron.
I C. It has one nucleon.
O D. It has one proton.
E. It is negatively charged.
OF. It is an alpha particle.
O G. It is a beta particle.
Answers
Answer:
B and C
Explanation:
The given symbol [tex]_{-1}^{0}e[/tex] denotes an electron. An electrons has neglecting mass and has one unit of negative charge. Thus, option A is correct.
What is an electrons?An electron is a subatomic particle. the other subatomic particles that constitutes an atom are neutrons and protons. neutrons and protons are located inside the nucleus and electrons are revolving around the nucleus through circular paths of fixed energies.
Electrons are having negative charge and protons are positively charged particles. For an atom the number of protons and electrons are the same. Therefore, an element in its atomic state is neutral.
Neutrons are neutral. However both neutrons and protons are having significant mass compared to an electrons. Hence, the representation of electrons include zero mass and -1 charge. Hence, option A is correct.
To find more on electrons, refer here:
https://brainly.com/question/1255220
#SPJ5
(06.01 LC)
A molecule contains 18 atoms and undergoes a physical change. How does the physical change affect the total number of atoms of
each element? (2 points)
Select one:
a. It remains the same.
b. It increases
O
c. It changes to zero.
d. It decreases
Answers
Answer:
It remains the same.
Explanation:
During physical change, the mass, number of atoms and number of molecules will remain the same.
Answer: A
Explanation:
After a chemical change, the total number of atoms of each elements stays the same.
According to the law of conservation of matter "During a chemical reaction, matter is neither created nor destroyed".
This law provides us with a good view into what happens to atoms after a chemical change.
Simply, since we know that atoms are not created nor destroyed, that means their number cannot increase nor decrease.
The simply remain the same.
This is why every chemical equation must be balanced.
A magnifying glass uses a convex lens of focal length 5.25 cm. When it is held 5.00 cm in front of an object, what magnification does it create? pls help
Answers
Answer:
21
Explanation:
You are in a desert on a hot day and see water in the distance. It is not really there, you see it because light bends due to a difference in the temperature of air. Which behavior of light best explains this? Select one: a. reflection b. translocation c. diffraction d. refraction
Answers
Answer:
d) refraction
Explanation:
in physics, refraction is the change of direction of a wave passing from one medium to another. refraction of light is the most commonly observed phenomenon but other waves such as sound waves and water waves also experience refraction
Answer:
B. Translocation
Explanation:
It means a change in location. It often refers to genetics, when part of a chromosome is transferred to another chromosome, you want a change in location because you are so thirsty in the desert and need water
What three colors can be combined to produce any color within the visible spectrum
Answers
Answer:
red, green, and blue.
Explanation:
The primary colors of light that combine to produce any color within the visible spectrum are red, green, and blue.
Which types of waves requires matter to carry energy? electromagnetic waves only mechanical waves only electromagnetic and mechanical waves longitudinal and electromagnetic waves
Answers
Answer: Mechanical waves
Explanation:
Mechanical waves require a medium in order to transport their energy from one location to another. A sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum.
Answer:
Mechanical waves
Explanation:
edge 22'
If 400 joules of heat are added to a gas in an isochoric process, what is the
change in its internal energy?
O A. 400 J
O B.-400 J
O C. 100 J
OD. 200
Answers
Answer:
A. 400 J
Explanation:
Because the process is isochoric, no volume change, so no work, so none of the energy is lost or converted. In other words, the system will gain and hold onto all of the J of heat put into it, which was 400J
If the angle of incidence of a light source to a shiny surface is 30 degrees, what will the angle
of reflection be?
150 degrees
90 degrees
60 degrees
30 degrees
Answers
Angle of incidence always equals angle of reflection. Think of a tennis ball being hit into a wall. The ball will bounce off at the same angle that it approached with. The angles mentioned are formed through the line called the "normal", which is the line perpendicular to the surface.
*** HOPE THIS HELP YOU***
Plz help me with question 3
Answers
Answer:
C. 110 - 140
Explanation:
Answer:
i think the best answer is c