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3 years ago

Which color is absorbed and which is reflected by the leaves of most plants?

2 answers:

7 0

The answer is D, Red and blue are absorbed and green is reflected, but remember, an object will be the color it reflects!

Alex73 [517]3 years ago

6 0

Im pretty sure the answer is D, Red and blue are absorbed and green is reflected i think this because when i google this, it brings up different colors for different objects, for leaves it says that it is green but reflects other colors besides red and blue(which are absorbed)

I REALLY HOPE THIS IS CORRECT!!
-toast

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Before the drawbridge starts to open, it is perfectly level with the ground. the dancer is standing still on one leg. what is th

seropon [69]

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types offriction: Dry friction resists relative lateral motion of two solid surfaces in contact. i hope you can give the figure and values given

6 0

3 years ago

A certain radioactive nuclide decays with a disintegration constant of 0.0178 h-1.

umka21 [38]

Explanation:

Given that,

The disintegration constant of the nuclide, $\lambda=0.0178\ h^{-1}$

(a) The half life of this nuclide is given by :

$t_{1/2}=\dfrac{ln(2)}{\lambda}$

$t_{1/2}=\dfrac{ln(2)}{0.0178}$

$t_{1/2}=38.94\ h$

(b) The decay equation of any radioactive nuclide is given by :

$N=N_oe^{-\lambda t}$

$\dfrac{N}{N_o}=e^{-\lambda t}$

Number of remaining sample in 4.44 half lives is :

$t_{1/2}=4.44\times 38.94$

$t_{1/2}=172.89\ h^{-1}$

So, $\dfrac{N}{N_o}=e^{-0.0178\times 172.89}$

$\dfrac{N}{N_o}=0.046$

$t_{1/2}=14.6\times 24$

$t_{1/2}=350.4\ h^{-1}$

So, $\dfrac{N}{N_o}=e^{-0.0178\times 350.4}$

$\dfrac{N}{N_o}=0.0019$

Hence, this is the required solution.

4 0

3 years ago

RACTIC PTUDIES

Amanda [17]

Answer:

The illumination on the book before the lamp is moved is 9 times the illumination after the lamp is moved.

Explanation:

The distance of the book before the lamp is moved, $d_{b} = 30 cm$

The distance of the book after the lamp is moved, $d_{a} = 90 cm$

Illumination can be given by the formula, $E = \frac{P}{4 \pi d^{2} }$

Illumination before the lamp is moved, $E_{b} = \frac{P}{4 \pi d_{b} ^{2} }$

Illumination after the lamp is moved, $E_{a} = \frac{P}{4 \pi d_{a} ^{2} }$

$\frac{E_{a}}{E_{b}} } = \frac{\frac{P}{4 \pi d_{a} ^{2} } }{\frac{P}{4 \pi d_{b} ^{2} } }$

$\frac{E_{a} }{E_{b} } = \frac{d_{b} ^{2} }{d_{a} ^{2}} \\\frac{E_{a} }{E_{b} } = \frac{30^{2} }{90 ^{2}}\\\frac{E_{a} }{E_{b} } =\frac{900 }{8100}\\\frac{E_{a} }{E_{b} } =\frac{1 }{9}$

$E_{b} = 9E_{a}$

The illumination on the book before the lamp is moved is 9 times the illumination after the lamp is moved.

6 0

3 years ago

Where are the most asteroids founds

SVETLANKA909090 [29]

Answer:

Explanation:

Hello bro!!!!!

Here's your answer

Most of the asteroids are found in the solar system. Some of them are found between orbits of mars and jupiter.

This image might help you

Hope this helps

plz mark as brainliest!!!!!!

6 0

4 years ago

Read 2 more answers

How long will it take a 6000W motor to lift a 5000kg load through a height of 2.5m?

erma4kov [3.2K]

Answer:

20.4375 seconds.

Explanation:

Wattage = Work / time

Work = f * d

F = mass * acceleration

mass = 5000 kg

acceleration = force of gravity

acceleration = 9.81

Force = 5000 * 9.81

Force = 49050 N

Work = F * d

d = 2.5

Work = 49050 * 2.5

Work = 122625 Joules

Wattage = Work / time

time = work / wattage

wattage = 6000 watts

time = 122625 / 6000

time = 20.4375 seconds.

5 0

3 years ago