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3 years ago

10

One major difference between plant and animal cells is that plant cells are the only ones with A) cellulose. B) lysosomes. C) nu

clei. D) vacuoles.

2 answers:

stira [4]3 years ago

5 0

The correct answer is A .

I am Lyosha [343]3 years ago

3 0

Answer is A and that has to be correct

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If a car is moving at a constant velocity of 10 m/s, what is its acceleration?

marin [14]

Answer:

If a car is moving at a <em><u>constant velocity of 10 m/s,</u></em> there will be no change in the velocity per time.

Acceleration is the rate of change of velocity

Acceleration=(Final velocity-Initial velocity)/Time

Acceleration=(10m/s-10m/s)/Time= <em><u>0 m/s²</u></em>

<h3>★ <u>0 m/s²</u> is the right answer. </h3>

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3 years ago

The speeds of 22 particles are as follows: two at 5.30 cm/s, four at 1.40 cm/s, six at 7.14 cm/s, eight at 1.52 cm/s, two at 7.6

Leona [35]

Answer:

Average velocity is 3.93 cm/s

Root mean square velocity is 4.79 cm/s

Velocity peak to peak is 6.28 cm/s

Explanation:

Speed of 2 particles = 5.3 cm/s

Speed of 4 particles = 1.4 cm/s

Speed of 6 particles = 7.14 cm/s

Speed of 8 particles = 1.52 cm/s

Speed of 2 particles = 7.68 cm/s

$v_{avg}=\frac{2\times 5.3+4\times 1.4+6\times 7.14+8\times 1.52+2\times 7.68}{22}\\\Rightarrow v_{avg}=\frac{86.56}{22}\\\Rightarrow v_{avg}=3.93\ cm/s$

Average velocity is 3.93 cm/s

$v_{rms}=\sqrt{\frac{2\times 5.3^2+4\times 1.4^2+6\times 7.14^2+8\times 1.52^2+2\times 7.68^2}{22}}\\\Rightarrow v_{rms}=\sqrt{\frac{507.34}{22}}\\\Rightarrow v_{rms}=4.79\ cm/s$

Root mean square velocity is 4.79 cm/s

$v_p=7.68-1.4=6.28\ cm/s$

Velocity peak to peak is 6.28 cm/s

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3 years ago

What is a blue moon

Irina18 [472]

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a phenomenon whereby the moon appears bluish owing to smoke or dust particles in the atmosphere

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3 years ago

Friction removes energy from objects in motion. Which statement best describes how this works?

xenn [34]

<em>friction transforms KE into thermal energy (a)</em>

That's why, if it goes on long enough, the moving object actually gets warm.

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3 years ago

What form of government concentrates power in a central government

spin [16.1K]

The answer is
Unitary system : All government power is held by a central government

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3 years ago

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