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aniked [119]
3 years ago
15

How does the physical structure of a plant have Large leaves help it survive?

Physics
1 answer:
elena-14-01-66 [18.8K]3 years ago
3 0

The large leaves help it survive as they serve as the<u> organ for photosynthesis.</u>

Explanation:

  • Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy.
  • During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds
  • Leaves provide food and air to help a plant stay healthy and grow. Through photosynthesis, leaves turn light energy into food.
  • Through pores, or stomata, leaves breathe in carbon dioxide and breathe out oxygen. Leaves also release excess water.
  • Most leaves are broad and so have a large surface area allowing them to absorb more light
  • A thin shape means a short distance for carbon dioxide to diffuse in and oxygen to diffuse out easily.
  • The exchange of oxygen and carbon dioxide in the leaf occurs through pores called stomata.
  • Normally stomata open when the light strikes the leaf in the morning and close during the night.

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Is Switching drugs to OTC status generally increases costs for insured patients true or false
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Which object has the most momentum if they were all traveling 50 mph? a) A bicycle
SCORPION-xisa [38]

Train has the most momentum if they were all traveling 50 mph

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6 0
3 years ago
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s^2 for 20s.
svet-max [94.6K]

Answer:

A) The distance between the stations is 1430m

B) The time it takes the train to go between the stations is 80s

Explanation:

First we will calculate the distance covered for the first 20s.

From one the equations of kinematics for linear motion

S = ut + \frac{1}{2}at^{2}  \\

Where S is distance traveled

u is the initial velocity

t is time

and a is acceleration

Since the train starts from rest, u = 0 m/s

Hence,  for the first 20s

a = 1.1 m/s²; t = 20s,  u = 0 m/s

∴ S = ut + \frac{1}{2}at^{2}  \\ gives

S = (0)(20) + \frac{1}{2}(1.1)(20)^{2}

S =  \frac{1}{2}(1.1)(20)^{2}

S = 220m

This is the distance covered in the first 20s.

  • The train then proceeds at constant speed for 1100m.

Now, we will calculate the speed attained here

From

v = u +at

Where v is the final velocity

Hence,

v = 0 + 1.1(20)

v = 1.1(20)

v = 22 m/s

This is the constant speed attained when it proceeds for 1100m

  • The train then slows down at a rate of 2.2 m/s² until it stops

We can calculate the distance covered while slowing down from

v^{2} = u^{2} + 2as

The initial velocity, u here will be the final velocity before it started slowing down

∴u = 22 m/s

The final velocity will be 0, since it came to a stop.

∴ v = 0 m/s

a = -2.2 m/s² ( - indicates deceleration)

Hence,

v^{2} = u^{2} + 2as gives

0^{2} =22^{2} +2(-2.2)s

0=22^{2} - (4.4)s\\4.4s = 484\\s = \frac{484}{4.4} \\s = 110m

This is the distance traveled while slowing down.

A) The distance between the stations is

220m + 1100m + 110m

= 1430m

Hence, the distance between the stations is 1430m

B) The time it takes the train to go between the stations

The time spent while accelerating at 1.1 m/s² is 20s

We will calculate the time spent when it proceeds at a constant speed of 22 m/s for 1100m,

From,

Speed =\frac{Distance}{Time}\\

Then,

Time = \frac{Distance}{Speed}

Time = \frac{1100}{22}

Time = 50 s

And then, the time spent while decelerating (that is, while slowing down)

From,

v = u + at\\0 = 22 +(-2.2)t\\2.2t = 22\\t = \frac{22}{2.2} \\t= 10 s

This is the time spent while slowing down until it stops at the station.

Hence, The time it takes the train to go between the stations is

20s + 50s + 10s = 80s

The time it takes the train to go between the stations is 80s

6 0
3 years ago
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