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oksano4ka [1.4K]
3 years ago
9

Plants make food through photosynthesis, a chemical reaction. What are the starting substances of the reaction?

Physics
2 answers:
Nana76 [90]3 years ago
4 0

Answer:

carbon dioxide, water and solar energy.

Explanation:

  • Equation is attached in the picture.
  • Carbon do oxide, water & sunlight combine to form Glucose & Oxygen. Glucose is utilized as energy by plant cells where as the oxygen is released into the atmosphere.
  • This reaction is catalyzed by chloroplast and chlorophyll enzymes.
  • This process of converting Carbon dioxide to Oxygen is known as photosynthesis.
vekshin13 years ago
3 0
The answer is the 4th option because they don't use oxygen, that's what they produce
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The Answer is B because primary consumers need to get their food from plants.

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3 years ago
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an electric device is plugged into a 110v wall socket. if the device consumes 500 w of power, what is the resistance of the devi
andreev551 [17]

Answer: R=24.2Ω

Explanation: <u>Power</u> is rate of work being done in an electric circuit. It relates to voltage, current and resistance through the following formulas:

P=V.i

P=R.i²

P=\frac{V^{2}}{R}

The resistance of the system is:

P=\frac{V^{2}}{R}

R=\frac{V^{2}}{P}

R=\frac{110^{2}}{500}

R = 24.2Ω

<u>For the device, resistance is 24.2Ω.</u>

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3 years ago
You are on a ParKour course. First you climb a angled wall up 9.5 meters. They you shimmy along the edge of a 3.5 meter long wal
Svet_ta [14]

The average speed would be  0.65 m/s, therefore the correct option is (A).

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Average speed= (total distance/ total time)

The total distance of the trip=9.5+3.5+15=28 m

The total time of trip=43 sec

Therefore the average speed=28/43=0.65 m/s.


8 0
3 years ago
The water is reflecting light, Is this specular or diffuse reflection? explain your answer​
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2 years ago
A 2.0-kg object moving with a velocity of 5.0 m/s in the positive x direction strikes and sticks to a 3.0-kg object moving with
Andrej [43]

Answer:

5.4 J.

Explanation:

Given,

mass of the object, m = 2 Kg

initial speed, u = 5 m/s

mass of another object,m' = 3 kg

initial speed of another orbit,u' = 2 m/s

KE lost after collusion = ?

Final velocity of the system

Using conservation of momentum

m u + m'u' = (m + m') V

2 x 5 + 3 x 2 = ( 2 + 3 )V

16 = 5 V

V = 3.2 m/s

Initial KE = \dfrac{1}{2}mu^2 + \dfrac{1}{2}m'u'^2

              = \dfrac{1}{2}\times 2\times 5^2 + \dfrac{1}{2}\times 3 \times 2^2

              = 31 J

Final KE = \dfrac{1}{2} (m+m')V^2 = \dfrac{1}{2}\times 5 \times 3.2^2 = 25.6 J

Loss in KE = 31 J - 25.6 J = 5.4 J.

4 0
3 years ago
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