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3 years ago

PHYSICAL SCIENCE: What are some methods used to control the types and sources of pollution?

1 answer:

3 0

Gaseous emissions are industrial products such as sulfur dioxide, carbon monoxide, and oxides of nitrogen also released during various manufacturing operations. Particulate control. Methods for particulate control tend to operate on a common principle.

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Can someone help me with this? (The answer marked in red text is a incorrect answer)

KIM [24]

I think the answer is A

Explanation:

the bus has more kg than the car so. the bus need to stop first

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2 years ago

Which of the following would be most likely to lead to increased biodiversity

marishachu [46]

C. National Park Planning

Biodiversity - <span>the variety of life in the world or in a particular habitat or ecosystem.

Clear cutting and oil drilling both decrease the variety of life, destroying habitat around them.

Farming decreases biodiversity because it decrease the variety of flora in that area, depending on what crop is planted.</span>

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3 years ago

Energy is transferred as the heat between two objects, one with a temperature of 5 C and the other with a temperature of 20 C. I

Delicious77 [7]

Answer:

Final temperature is located between 5 °C and 20 °C.

Explanation:

The object with high temperature transfers energy to the object with low temperature until thermal equilibrium is reached, that is, when both objects have the same temperature.

$Q_{H} = -Q_{L}$

$C_{H}\cdot (20^{\textdegree}C - T) = -C_{L}\cdot (5^{\textdegree}C-T)$

$20\cdot C_{H} - C_{H}\cdot T = -5\cdot C_{L}+ C_{L}\cdot T$

$(C_{H}+C_{L})\cdot T=20\cdot C_{H} + 5\cdot C_{L}$

$T = 20\cdot\frac{C_{H}}{C_{L}+C_{H}} + 5\cdot \frac{C_{L}}{C_{L}+C_{H}}$

Now, let consider three scenarios:

Scenario 1 - $C_{H} = C_{L]$

$T = 12.5^{\textdegree}C$

Scenario 2 - $C_{H}>> C_{L}$

$T = 20^{\textdegree}C$

Scenario 3 - $C_{H}$

$T = 5^{\textdegree}C$

Final temperature is located between 5 °C and 20 °C.

8 0

3 years ago

HELP ME ASAP!!!!! This is 7th grade science! Will give brainliest, five starts, and a heart!

stira [4]

Answer:

A- Carries urine to the bladder

B- excretes urine out of the body

C- Stores urine temporarily

D- Produces urine

6 0

2 years ago

Find the wavelength (in nm) of a 2.52 eV photon. a. 492.34127 nm.b. 585.88611 nm.c. 541.5754 nm.d. 418.49008 nm.

elena-14-01-66 [18.8K]

Answer:

The correct option is (a).

Explanation:

Given that,

The energy of photon, E = 2.52 eV

We need to find the wavelength of the photon in nm. The formula for the energy of a photon is given by :

$E=\dfrac{hc}{\lambda}\\\\\lambda=\dfrac{hc}{E}\\\\\lambda=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{2.52\times 1.6\times 10^{-19}}\\\\=4.93\times 10^{-7}\ m\\\\=493\ nm$

The nearest option is a) i.e. 492.34127 nm.

6 0

3 years ago