A helium balloon containing 5m³ of gas at a pressure of 30kPa is released into the air. Assuming that the temperature is constant calculate the volume the balloon would have when the pressure inside the balloon has fallen to 5kPa. Answer in m³.
Answers
Answer:
30 m³
Explanation:
Parameters given:
Initial volume of helium, V1 = 5 m³
Initial pressure in balloon, P1 = 30 kPa
Final pressure, P2 = 5 kPa
To find the volume of the balloon at that volume, we apply Boyle's law.
It states that at constant temperature, the pressure of a gas is inversely proportional to the volume of the gas.
Mathematically:
P = k / V
Where k = constant of proportionality
This implies that:
P * V = k
This means that if the pressure or volume of the gas changes at the same temperature, the product of the pressure and volume would be the same:
Hence:
P1 * V1 = P2 * V2
Hence, to find the final volume:
30 * 5 = 5 * V2
=> V2 = (30 * 5) / 5
V2 = 30 m³
The volume of the gas when the pressure is 5 kPa is 30 m³.
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B. Athletic ability
C. Number of teeth
D. Shape of earlobes
Answers
Genes determine the physical traits and functions of the organism. But some characteristics are influenced by the environment. Option B, Athletic ability.
What are genes?
Genes are the hereditable DNA fragments that transmit the information needed to specify traits. This information passes from parents to offspring, generation to generation.
Genes are physically placed and arranged in the chromosomes. Each chromosome contains too many genes that might vary in length.
Geneslength depends on the pairs of bases composing them. These sequences vary in number, producing genes of different lengths.
Genes code for proteins. Proteins create the organism tissues and perform or carry out specific functions in the organisms, controlling almost all processes and chemical reactions.
According to this information, we can assume that genes are involved in determining the person's Eye color, Number of teeth, and Shape of earlobes.
Athletic ability is also influenced by the environment. Genes might be involved in the physical traits that lead a person to be athletic or not (such as muscles or strength). But the enviroment plays a significant role in determing if the person has the athletic ability or not.
Option B. Athletic ability
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doldrums
polar easterlies
trade winds
horse latitudes
Answers
Answer:
doldrums
Explanation:
Just need to type something more to be able to post
at the bottom of each page
at the end
in the appendix
Answers
Answer:
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Explanation:
leave a rating for my dying soul please. :)
Answer:
at the end
Explanation:
Answers
By using the relation between period and frequency, we conclude that the period of the fork is0.0023 seconds.
What is the period of the vibrating fork?
We know that the relation between period and frequency is:
T = 1/f
where T is the period and f is the frequency.
In this case, we know that the frequency of the fork is 440 Hz, where:
1 Hz = 1/s
Then the period of the fork will be:
T = 1/(440 Hz) = (1/440) s = 0.0023 s
Meaning that each complete vibration of the fork takes 0.0023 seconds.
If you want to learn more about waves, you can read:
or, 440 = 1/t
thus, 440t = 1
thus, t = 1/440
thus, time period is 0.002273 seconds
Answers
The work done to launch the spacecraft in low earth orbit is
Work-energy theorem:
The gravitational force is a conservative force. So, the total energy of the system must be conserved.
According to the work-energy theorem:
work done = - change in potential energy of the system.
W = -ΔPE
Initially, the potential energy of the satellite on the surface is:
PE =
where m is the mass of the satellite
Let the orbit be at a height of h from the surface, so the potential energy in the orbit is :
PE' =
ΔPE = PE'-PE
ΔPE =
Now work done:
W = - ΔPE
Thus,
Learn more about work energy theorem:
Answer:
Work done to shift the spacecraft from Earth surface to low Earth radius is given as
Explanation:
As we know that spacecraft is at surface of Earth initially
So we will have
now when it is at low radius Earth Orbit then we have
now we know that work done to shift the spacecraft from Earth Surface to Low earth orbit is change in total energy
so we have
since we know h << Re
so work done is given as