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aleksley [76]
3 years ago
10

Which statement is false? Question 23 options: A) The average kinetic energies of molecules from samples of different "ideal" ga

ses is the same at the same temperature. B) The molecules of an ideal gas are relatively far apart. C) All molecules of an ideal gas have the same kinetic energy at constant temperature. D) Molecules of a gas undergo many collisions with each other and the container walls. E) Molecules of greater mass have a lower average speed than those of less mass at the same temperature.
Physics
1 answer:
zavuch27 [327]3 years ago
3 0

Answer:

The false statement is C).

Explanation:

Individual molecules of an ideal gas could have any velocity, and so, any kinect energy. Temperature is related to the average kinectic energy of all molecules, but not to inidividual ones.

This means that option C) is FALSE.

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Coulomb measured the deflection of sphere A when spheres A and B had equal charges and were a distance d apart. He then made the
sdas [7]

Answer:

The new distance is     d = 0.447 d₀

Explanation:

The electric out is given by Coulomb's Law

         F = k q₁ q₂ / r²

This electric force is in balance with tension.

We reduce the charge of sphere B to 1/5 of its initial value (q_{B}=q₂ = q₂ / 5) than new distance (d = n d₀)

dat

     q₁ = q_{A}

     q₂ = q_{B}

     r = d₀

In order for the deviation to maintain the electric force it should not change, so we apply the Coulomb equation for the two points

         F = k q₁ q₂ / d₀²

         F = k q₁ (q₂ / 5) / (n d₀)²

         .k q₁ q₂ / d₀² = q₁ q₂ / (5 n² d₀²)

          5 n² = 1

          n = √ 1/5

          n = 0.447

The new distance is

         d = 0.447 d₀

6 0
3 years ago
Which term describes the number of crests that pass a point in a given amount of time
joja [24]
The term is frequency.

The frequency is the number of vibrations per unit of time or the number of waves that passes a point per unit of time.

Every crest (and every trough) represents a pass of the wave so you can count the number of crests in an intervavl of time to find the frequency as the number of crests divided by the time elapsed. 
7 0
4 years ago
Read 2 more answers
A stone is dropped from the top a 45m hign building how fast will it moving when it reaches the ground? Ande what will its veloc
posledela

Answer:

29.7 m/s fast, velocity is 29.7 m/s

Explanation:

Applying,

v² = u²+2gs...................... Equation 1

Where v = final velocity, u = initial velocity, g = acceleration due to gravity, s = distance.

Given: u = 0 m/s (dropped from height), s = 45 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

v² = 0²+2×9.8×45

v² = 882

v = √(882)

v = 29.7 m/s.

Hence the stone will be moving 29.7 m/s fast and the velocity is also 29.7 m/s

7 0
3 years ago
Several years from now you have graduated with an engineering/physics degree and have been hired by a nanoengineering firm as an
nadya68 [22]

Answer:

See attached handwritten document for answer

Explanation:

5 0
4 years ago
!!!!!URGENT!!!!!!
Vadim26 [7]

Answer:

The specific heat of air is 100  J/kg°C.

Explanation:

mass, m = 5 kg

Temperature change, T' - T =  37 °C - 22 °C = 15°C

heat, H = 7500 J

let the specific heat of air is c.  

The formula of heat is

H = m c (T' - T)

7500 = 5 x c x 15

c = 100 J/kg°C

4 0
3 years ago
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