15 POINTS PLZ HELP please look at the images below

Which chemical reaction releases the most energy?

IceJOKER [234]

A.nuclear chain reaction

8 0

4 years ago

A person who has a job that requires working all night and sleeping during the day will end up fighting hos or her natural

LuckyWell [14K]

Answer:

A

The answer to this question is circadian rhythm. A person who has a job that requires working all night and sleeping during the day will end up fighting his or her natural circadian rythm. Hope it helps!

5 0

4 years ago

Read 2 more answers

Two sites are being considered for wind power generation. In the first site, the wind blows steadily at 7 m/s for 3000 hours per

slavikrds [6]

Answer:

E.year₂ > E.year₁ (Second site is better)

Explanation:

Given data

$V_{1}=7 m/s\\Time_{1}=3000 hours/year\\V_{2}=10m/s\\Time_{2}=1500hours/year$

The power generation is the time rate of kinetic energy which can be calculated as:

Power=ΔKE=m×V²/2

Regarding that m ∝ V.Then

Power ∝ V³ ⇒ Power=constant×V³

Since ρa is constant for both sides and Area is the same as same wind turbine is used

For First site

$Power_{1}=const.V^3\\Power_{1}=const.(7m/s)^3\\Power_{1}=const.343Watt\\$

For second site

$Power_{2}=const.V_{2}^3\\Power_{2}=const.(10m/s)^3\\Power_{2}=const.1000W$

Calculating energy generation per year for each of two sites

E.year=Power×Operation time per year

For First site

E.year₁=Power₁×Operation time₁ per year

$E_{year1}=const.*343W*3000\\E_{year1}=const.1029000(W.hour/year)$

For Second site

E.year₂=Power₂×Operation time₂ per year

$E_{year2}=const.*1000W*1500\\E_{year2}=const.1500000(W.hour/year)$

So

E.year₂ > E.year₁ (Second site is better)

3 0

4 years ago

Read 2 more answers

Someone please help with this

SSSSS [86.1K]

Answer:

The new force is 2/3 of the original force

Explanation:

Coulomb's Law

The electrical force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

$\displaystyle F=k\frac{q_1q_2}{d^2}$