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Radda [10]
3 years ago
7

Which of the following biomes has tree leaves that change color and drop as the season changes from fall to winter. This covers

much of the eastern half of United States.
A.)Tropical Rainforest
B.)Grassland
C.)Temperate Deciduous Forest
D.)Taiga or Coniferous Forest
Physics
1 answer:
LenKa [72]3 years ago
4 0
D is the answer j think it is
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The average speed of a nitrogen molecule in air is about 6.70 ✕ 102 m/s, and its mass is about 4.68 ✕ 10-26 kg.(a) If it takes 3
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Answer:

a = 4.32*10^15 m/s^2

Explanation:

In order to calculate the acceleration of the nitrogen molecule, you take into account that the force experienced by the molecule, is equal to the change in its momentum:

F=\frac{\Delta p}{\Delta t}=m\frac{\Delta v}{\Delta t}       (1)

m: mass of the nitrogen molecule

Δv: change in the speed of the molecule

Δt: time lapse of the change of the momentum of the molecule = 3.10*10^-13 s

Furthermore, by the Newton second law, you have:

F=ma=m\frac{\Delta v}{\Delta t}\\\\a=\frac{\Delta v}{\Delta t}       (2)

The change in the speed is given by:

\Delta v=v-v_o=6.70*10^2m/s-(-6.70*10^2m/s)=1.34*10^3\frac{m}{s}

where you have taken into account the direction of the initial and final speed.

You replace the values of all parameters in the equation (1) in order to calculate the acceleration:

a=\frac{1.34*10^3m/s}{3.10*10^{-13}s}=4.32*10^{15}\frac{m}{s^2}

The acceleration of the nitrogen molecule is 4.32*10^15m/s^2

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3 years ago
For the sign show, select the statements below that describe the situation. Choose all that apply. The system is in equilibrium
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Answer:

A and D

Explanation:

I believe it is A and D because they appear to be the most accurate answers.

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Modern atomic theory is, of course, a little bit updated but original Daltons's theory is still remains. By modern atomic theory atoms can be destructed by nuclear reaction, but no with chemical reaction. Also there are different kinds of atoms in one element, their mass can be different. 
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