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2 years ago

Hurry I am being timed Which organelle appears to be empty but is filled with liquid?

Physics

1 answer:

bagirrra123 [75]2 years ago

4 0

Answer:

The answer is the first option, vacuole.

Explanation:

The name vacuole has its origins in the Latin word vacuus meaning 'empty' and this unfortunately is how vacuoles appear in many slide preparations and photographs. The fact that vacuoles are fluid filled and that different vacuoles within the same cell can contain different chemicals is not normally visible.

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A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 15.0 m

Levart [38]

Answer:

1.3823 rad/s

20.7345 m/s

28.66129935 m/s²

$a=2.92164g$

2006.29095 N radially outward

Explanation:

r = Radius = 15 m

m = Mass of person = 70 kg

g = Acceleration due to gravity = 9.81 m/s²

Angular velocity is given by

$\omega=13.2\times \dfrac{2\pi}{60}\\\Rightarrow \omega=1.3823\ rad/s$

Angular velocity is 1.3823 rad/s

Linear velocity is given by

$v=r\omega\\\Rightarrow v=15\times 1.3823\\\Rightarrow v=20.7345\ m/s$

The linear velocity is 20.7345 m/s

Centripetal acceleration is given by

$a_c=r\omega^2\\\Rightarrow a_c=15\times 1.3823^2\\\Rightarrow a_c=28.66129935\ m/s^2$

The centripetal acceleration is 28.66129935 m/s²

Acceleration in terms of g

$\dfrac{a}{g}=\dfrac{28.66129935}{9.81}\\\Rightarrow a=2.92164g$

$a=2.92164g$

Centripetal force is given by

$F_c=ma_c\\\Rightarrow F_c=70\times 28.66129935\\\Rightarrow F_c=2006.29095\ N$

The centripetal force is 2006.29095 N radially outward

The torque will be experienced when the centrifuge is speeding up of slowing down i.e., when it is accelerating and decelerating.

3 0

3 years ago

I will give brainliest if right!!!!!!!!!!!

Leya [2.2K]

Answer:

A is a gas becasue it contracts and the containers change.

4 0

3 years ago

A young man walks daily through a gridded city section to visit his girlfriend, who lives m blocks East and nblocks North of whe

Arada [10]

Answer:

The man ate eggs.

Explanation:

He should brush his teeth before seeing his girlfriend.

4 0

2 years ago

what is the acceleration of a 2,000- kilogram truck if a force of 4,200. N is used to make it start moving forward?

cupoosta [38]

Newton's 2nd law of motion: Force = (mass) x (acceleration)

Divide each side by (mass) : Acceleration = (force) / (mass)

Acceleration of the truck = (4,200 N) / (2,000 kg) = 2.1 m/s²

5 0

2 years ago

You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to A) a piece of metal. B)

NikAS [45]

I believe the correct answer is B.<span>positively charged hair.</span>

8 0

2 years ago

Read 2 more answers