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4 years ago

What is the job of chlorophyll in photosynthesis?

2 answers:

8 0

A
Green substance in producers that traps light energy from the sun, which is then used to combine carbon dioxide and water into sugars in the process of photosynthesis. Chlorophyll is vital for photosynthesis, which helps plants get energy from light

kykrilka [37]4 years ago

4 0

Answer:

Explanation:

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Two particles with positive charges q1 and q2 are separated by a distance s. Part A Along the line connecting the two charges, a

liraira [26]

Answer:

$x=s*\frac{q_{1} +-\sqrt{q_{1}q_{2}}}{q_{1}-q_{2}}$

we choose the sign, in order to x<s

Explanation:

x=distance from q1

$E_{1} =E_{2}$

$k*q_{1}/x^{2}=k*q_{2}/(s-x)^2}$

$q_{1}*(s^{2}-2sx+x^{2})-q_{2}x^{2}=0$

$(q_{1}-q_{2})x^{2}-2sq_{1}x+q_{1}*s^{2}=0$

this is a quadratic equation:

$x=\frac{-b+-\sqrt{b^{2}-4ac} }{2a}=\frac{2sq_{1} +-\sqrt{(-2sq_{1})^{2}-4(q_{1}-q_{2})q_{1}s^{2}}} {2(q_{1}-q_{2})}$

$x=s*\frac{q_{1} +-\sqrt{q_{1}q_{2}}}{q_{1}-q_{2}}$

4 0

4 years ago

You are designing a toaster heating element to consume 10A at 120V. The heating element will be made from a length of cylindrica

bulgar [2K]

Answer: a) 12 Ω; b) 15.10 m; c) 360 kJ

Explanation: In order to explain this problem we have to considere the OHM law which is given by:

V=R*I where R is the resistance and I the current, V is the voltage.

For the toaster heating the resistance must be equal

R=V/I=120/10= 12 Ω

We also know that R=ρ*L/A where L and A are the length and area of the wire.

Then the length of the wire is given by:

L=R*A/ρ= 12*π*(0.8*10^-3)^2/1.6*10^-6=15.10 m

Finally we can calculate the consumed energy by the toaster heating during 5 minutes (5*60s=300 s).

The power is equal:

P=I*V= 10*120=1200 W

E= P*time (s)= 1200*300=360*10^3J

4 0

3 years ago

Read 2 more answers

In which biome would you most likely find plants and animals that are adapted to survive in hot humid climates

joja [24]

in the desert, I believe

7 0

3 years ago

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A ball moving 2 ft/s rolls off a table (on earth) that is 32 inches high. How long will it take the ball to hit the floor answer

mart [117]

Answer:When the ball rolls off the edge of the table, it will continue moving forward at 2.0 m/s until it hits the floor.

Explanation:This is what I would say is the answer bc I had to do reasearch on a lot of this for my work this year so if its not im veery sorry

3 0

3 years ago

A ball is thrown vertically upward from the top of a building 80 feet tall with an initial velocity of 64 feet per second. The d

-BARSIC- [3]

Answer:

a) $t=6.37s$

b) $t=3.3333s$

Explanation:

The knowable variables are the initial hight and initial velocity

$s_{o}=80ft$

$v_{os}=64ft/s$

The equation that describes the motion of the ball is:

$s=80+64t-16t^{2}$

If we want to know the time that takes the ball to hit the ground, we need to calculate it by doing s=0 that is the final hight.

$0=80+64t-12t^{2}$

a) Solving for t, we are going to have two answers

$t=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

a=-16

b=64

c=80

$t=-1.045 s$ or $t=6.378s$

<em><u>Since time can not be negative the answer is t=6.378s </u></em>

b) To find the time that takes the ball to pass the top of the building on its way down, we must find how much does it move too

First of all, we need to find the maximum hight and how much time does it take to reach it:

$v_{y}=v_{o}+gt$

at maximum point the velocity is 0

$0=64-32.2t$

Solving for t

$t=1.9875 s$

Now, we must know how much distance does it take to reach maximum point

$s=0+64t-16t^{2} =64(1.9875)-12(1.9875)^{2} =80ft$

So, the ball pass the top of the building on its way down at 160 ft

$160=80+64t-16t^{2}$

Solving for t

$t=2s$ or $t=3.333s$

Since the time that the ball reaches maximum point is almost t=2s that answer can not be possible, so the answer is t=3.333s for the ball to go up and down, passing the top of the building

4 0

3 years ago

Read 2 more answers