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Natali [406]
3 years ago
14

Some trees have red leaves all year long. You know that plants with green leaves make their food for themselves. How do you thin

k trees with red leaves gets its food?

Physics
2 answers:
nexus9112 [7]3 years ago
8 0
"The chlorophyll needed for photosynthesis is 'hiding' within the leaf color, whether it be purple, yellow or red<span>. Our eyes lack the ability to see that chlorophyll is there." Plant </span>leaves<span> have three primary classes of pigments: chlorophyll, carotinoids and anthocyanins</span>
marshall27 [118]3 years ago
6 0
The same way as the trees with green leaves. Through photosynthesis :)
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2 years ago
When the current through a circular loop is 6.0 A, the magnetic field at its center is 2.0 * 10-4 T. What is the radius of the l
Leona [35]

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5 0
2 years ago
Two forces are exerted on an object in the vertical direction: a 20 N force downward and a 10 N force upward. The mass of the ob
VMariaS [17]

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Explanation:

6 0
2 years ago
A wire of Nichrome (a nickel– chromium– iron alloy commonly used in heating elements) is 1.0 m long and 1.0 mm² in cross-se
Lyrx [107]

Answer:

The conductivity of Nichrome is 2\times 10^6\ S/m.

Explanation:

Given:

Potential difference (V) = 2.0 V

Current flowing (I) = 4.0 A

Length of wire (L) = 1.0 m

Area of cross section of wire (A) = 1.0 mm² = 1 × 10⁻⁶ m² [1 mm² = 10⁻⁶ m²]

We know, from Ohm's law, that the ratio of voltage and current is always a constant and equal to the resistance of the resistor. Therefore, the resistance of the nichrome wire is given as:

R=\frac{V}{A}=\frac{2.0}{4.0}=0.5\ \Omega

Now, resistance of the nichrome wire in terms of its resistivity, length and area of cross section is given as:

R=\rho\frac{L}{A}

Where, \rho\to resistivity\ of\ Nichrome

Now, plug in all the values given and solve for \rho. This gives,

0.5\ \Omega=\rho\frac{1.0\ m}{1\times 10^{-6}\ m^2}\\\\\rho=\frac{0.5\times 1\times 10^{-6}}{1.0}=0.5\times 10^{-6}\ \Omega-m

Now, conductivity of a material is the reciprocal of its resistivity. Therefore, the conductivity of Nichrome is given as:

\sigma=\frac{1}{\rho}=\frac{1}{0.5\times 10^{-6}}=2\times 10^6\ S/m

Conductivity is measured in Siemens per meter (S/m)

Therefore, the conductivity of Nichrome is 2\times 10^6\ S/m.

7 0
2 years ago
In what way is consciousness a construct?
-Dominant- [34]

Answer:

Consciousness is a psychological construct because it is believed to exist, but we are unable to physically measure it, so descriptions are 'constructed' to explain it. ... The more aware we are of our thoughts, feelings, perceptions and surroundings, the higher the level of consciousness.

5 0
2 years ago
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