All categories

4 years ago

What was significant about the atomic theory that democrituis proposed?

Physics

1 answer:

Vikki [24]4 years ago

7 0

Democritus theorized that atoms were specific to the material which they composed

You might be interested in

Is a vector necessarily changed if it is rotated through an angle ?Explain

gavmur [86]

Yes, since it depends on the normal and resultant

6 0

4 years ago

Construct a process by which rocks may change form

love history [14]

<span>Crystallization, metamorphism, and erosion and sedimentation.<span>Any rock can transform into another rock by passing through one or more of these processes.
Hope it helps :)</span></span>

5 0

3 years ago

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

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

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

3 0

4 years ago

Read 2 more answers

TAKE 100 POINTS!!!please help look the picture!!!!

UNO [17]

Answer:

A major challenge in the drug delivery field is to enhance transport of therapeutics across biological barriers such as the blood brain barrier (BBB), the small intestine, nasal, skin and the mouth mucosa.

4 0

3 years ago

Read 2 more answers

Which contains the particles that are vibrating fastest?

Phantasy [73]

Answer:

Boiling water

Explanation:

3 0

3 years ago