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Lena [83]
4 years ago
6

True or False: Molecules in a gas resist crowding and get as far apart as possible. Free electrons also resist crowding and get

as far apart as possible. When a tank is filled with gas the molecules distribute themselves more or less uniformly throughout the tank's volume, thereby giving each molecule the maximum possible distance from its nearest neighbors. When a copper ball is charged with electricity, the free electrons will distribute themselves more or less uniformly throughout the ball's volume for much the same reason.
Physics
1 answer:
AfilCa [17]4 years ago
4 0

Answer:

This statement is False.

Explanation:

This is because the molecules of gases are randomly traveling and they even sometimes collide with each other. So, it is true that they resist crowding but it is not always possible for the gas molecules to be as far apart as possible because of their random movements. This also makes it impossible for the gas molecules in the tank to be always at the maximum possible distance from its nearest neighbor.

However, the distance between the electrons is not due to random movements like gases. Electrons are placed at the distance from each other due to the forces of repulsion between them, as the same charged particles always repel each other. So, the dispersion of the electron on the copper ball is not due to the random distribution of electrons. However, they will be placed at a distance to each other due to the force of repulsion between them.

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In a certain experiment, a radio transmitter emits sinusoidal electromagnetic waves of fre- quency 110.0 MHz in opposite directi
Shkiper50 [21]

To solve the problem it is necessary to take into account the concepts related to frequency depending on the wavelength and the speed of light.

By definition we know that the frequency is equivalent to,

f=\frac{c}{\lambda}

where,

c= Speed of light

\lambda = Wavelength

While the wavelength is equal to,

\lambda = \frac{2L}{n}

Where,

L = Length

n = Number of antinodes/nodes

PART A) For the first part we have that our wavelength is 110MHz, therefore

\lambda = \frac{c}{f}

\lambda = \frac{3*10^8}{11*10^6}

\lambda = 1.36m

Therefore the distance between the nodal planes is 1.36m

PART B) For this part we need to find the Length through the number of nodes (8) and the wavelength, that is,

\lambda'=\frac{2L}{n}

L = \frac{\lambda n}{2}

L = \frac{8*2.72}{2}

L = 10.90m

Therefore the length of the cavity is 10.90m

4 0
3 years ago
What is the name for family labeled #4 (Yellow)?
goldfiish [28.3K]

Answer:

transition metals im sorry if this was too late

4 0
3 years ago
Introduction: The specific heat capacity of a substance is the amount of energy needed to change the temperature of that substan
ki77a [65]

Answer:

A) 8,368 J

B) ) 0.893 J/gºC

Explanation:

A)

  • The heat gained by the water can be obtained solving the following equation:

       q_{g} = c_{w} * m *  \Delta T (1)

  • where cw = specific heat of water = 4.184 J/gºC
  • m= mass of water = 1,000 g
  • ΔT = 2ºC
  • Replacing these values in (1) we get:

       q_{g} = c_{w} * m *  \Delta T = 4.184 J/gºC*1,000 g* 2ºC = 8,368 J (2)

B)

  • Assuming that the heat energy gained by the water is equal to the one lost by the aluminum, we can use the same equation, taking into account that the energy is lost by the aluminum, so the sign is negative:  -8,368 J.
  • Replacing by the mass of aluminum (125 g), and the change in temperature (-74.95ºC), in (1), we can solve for the specific heat of aluminum, as follows:

       q_{l} = c_{Al} * m_{Al} *  \Delta T  (3)

⇒    -8,368 J = c_{Al}* 125 g * (-74.95ºC) (4)

       c_{Al} = \frac{-8,368J}{125g*(-74.95ºC} = 0.893 J/gºC (5)

  • which is pretty close to the Aluminum's accepted specific heat value of 0.900 J/gºC.

8 0
3 years ago
A rock is dropped from rest. How fast is it going after it has been falling for 9.2 s?
natka813 [3]

90.2 m/s. A rock dropped from rest after it has falling for 9.2 seconds will have a velocity of 90.2m/s.

The bodies left in free fall increase their speed (downwards) by 9.8 m/s² every second. The acceleration of gravity is the same for all objects and is independent of the masses of these. In the free fall the air resistance is not taken into account.

v = g*t

v = (9.8m/s²)(9.2s) = 90.2 m/s

6 0
4 years ago
What does N.A.S.A stand for?
spayn [35]

Answer : National Aeronautics and Space Administration

Problem : What does N.A.S.A stand for?

Explanation: NASA astronaut Christina Koch is pictured during a spacewalk. NASA stands for National Aeronautics and Space Administration. NASA was started on October 1, 1958, as a part of the United States government. NASA is in charge of U.S. science and technology that has to do with airplanes or space.

Hopefully this helps you!

4 0
3 years ago
Read 2 more answers
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