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3 years ago

All organisms need energy to function. Which cell organelle provides this energy

2 answers:

8 0

Mitochondria is the cell organelle the provides energy to function it also helps in respiration .It is called also as the power house of the cell

RUDIKE [14]3 years ago

4 0

Mitochondria is the answer the nickname I have for it is that it's the "powerhouse"

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So that your grandmother can listen to A Prairie Home Companion, you take her bedside radio to the hospital where she is staying

g100num [7]

The old radio will not be safe in a hospital and buying a new one is the best thing to do as to prevent the risk of her or other individuals getting electrocuted.

<h3>What is Voltage?</h3>

This is referred to as the difference in electric potential between two points or the work done which is needed per unit to move a charge between two points in a circuit.

All individuals have varying skin resistance which is why exposure to that radio which develops 120V on one of its knobs may lead to electrocution or other types of injuries to the grandma or other individuals in the hospital.

This is therefore the reason why the old radio will be dangerous in a hospital environment.

Read more about Resistance here brainly.com/question/17563681

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4 0

2 years ago

If the diffusion coefficient doubles, and the average diffusion distance across a membrane remains the same, what can be said ab

Alex777 [14]

Answer:

<u>time taken will be halved</u>

Explanation:

we have

$t=\frac{x^{2}}{2D}$ ..................(1)

where

t = time elapsed since diffusion began

$x^{2}$ = mean distance traveled by the diffusion solute

D = Diffusion coefficient

now, according to the conditions given in the question

when, diffusion coefficient (D) doubles i.e D' = 2D

Average diffusion distance remains same i.e $x' = x$

substituting the values in the equation we get

$t=\frac{x'^{2}}{2D'}$

$t=\frac{x^{2}}{2(2D)}$

$t=\frac{x^{2}}{4D}$ ...............(2)

hence, on comparing equation (1) and (2) we can say that the<u> time taken will be halved</u> when the diffusion coefficient doubles and the mean distance traveled remains the same

6 0

3 years ago

Look at the graph below.

Fiesta28 [93]

Answer:

I'm pretty sure its C

Explanation:

4 0

3 years ago

A satellite is orbiting the earth just above its surface. The centripetal force making the satellite follow a circular trajector

Pavlova-9 [17]

Answer:

$v=7905m/s$

$t=5063s$

Explanation:

A satellite is orbiting the earth just above its surface. The centripetal force making the satellite follow a circular trajectory is just its weight, so its centripetal acceleration is about 9.81 m/s2 (the acceleration due to gravity near the earth's surface). If the earth's radius is about 6370 km, how fast must the satellite be moving? How long will it take for the satellite to complete one trip around the earth?

The weight of the satellite is the centripetal force, so:

$W=mg=F_{cp}=ma_{cp}=m\frac{v^2}{r}$

Which means: $g=\frac{v^2}{r}$

We can calculate then the velocity:

$v=\sqrt{gr}=\sqrt{(9.81m/s^2)(6370000m)}=7905m/s$

For calculating how long will it take for the satellite to complete one trip around Earth we consider that the distance of the trip is the circumference of the orbit. This is calculated as $C=2\pi r$ .

Since velocity is v=d/t, we have:

$t=d/v=C/v=2\pi r/v=\frac{2\pi 6370000}{7905m/s} =5063s$

5 0

3 years ago

Sever21 [200]

Three units deformations observed in these bands.

<h3>What forces do a rubber band encounter?</h3>

Elastic force is the force that permits some materials to regain their former shape after being stretched or crushed. Thus, a stretched rubber band is subject to an elastic force.

The rubber band experiment uses a straightforward rubber band to show entropic force and a refrigeration cycle. The rubber band experiment involves stretching and then releasing a rubber band while measuring its temperature.

Always acting in the opposite direction of motion is friction. This indicates that if friction is there, it cancels out some of the force driving the motion (if the object is being accelerated). This results in a decreased acceleration and a smaller net force.

learn more about Elastic force refer

brainly.com/question/5055063

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7 0

1 year ago