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4 years ago

Help please!:)

1 answer:

8 0

Many every day activities produce pollution, which leads to global warming. For example, when gas is burned in a car it produces carbon dioxide, a Greenhouse gas. This CO2 then becomes a part of the Earth's atmosphere causing the heat from the sun's light to get trapped, bouncing from the earth to the atmosphere and back again. The sun doesn't stop producing light, so the world keeps gettting hotter, causing increasing temperature as each decade goes by.

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The shorter an elecrtomagnetic waves wavelength, the ___

grandymaker [24]

<h3>Answer:</h3>

The higher is its frequency.

<h3>Explanation:</h3>

Electromagnetic waves are types of waves that do not require a material medium for transmission.
They include radio waves, microwaves, infra-red and gamma rays among others.
Frequency refers to the number of complete oscillations in one second while wavelength is the distance between two successive crests or trough in a transverse wave.
The frequency of electromagnetic waves varies inversely to the wavelength.
Electromagnetic waves with higher frequencies such as x-rays and gamma rays have lower wavelengths.
Those with higher wavelengths, on the other hand, such as microwaves and radio waves have lower frequencies.

7 0

3 years ago

The radius of the smaller circle is 8 feet. The distance from the rim of the inner circle to the rim of the outer circle is 3 fe

postnew [5]

Answer:

178.98 sq. feet

Explanation:

The path and the garden has been shown in the figure below. The green area is the garden and the area in brown is the path.

It has been given that,

Radius of garden = 8 feet

So, the area of garden = 3.14 × 8 × 8 = 200.96 sq. feet

The total radius of the land including garden and path = 8 + 3 = 11 feet

So, the total are of land including garden and path = 3.14 × 11 × 11 = 379.94 sq. feet

So, the area of path = Total area of the land - area of garden

Area of path = 379.94 - 200.96 = 178.98 sq. feet

5 0

4 years ago

If the principal quantum number is n = 3, what are the name(s) of the subshells?

Ede4ka [16]

The name(s) of the subshells are s,p and d

<h3>Further explanation</h3>

Each orbital in an atom consists of 4 quantum numbers

n is the principal quantum number.

l is the angular momentum / azimuthal quantum number

ml, the magnetic quantum number

ms, the electron-spin quantum number

Value of n: positive integer

value of l: s = 0, p = 1, d = 2, f = 3 , ..(n-1)

ml value: between -l to + l

ms value: +1/2 or -1/2

n=3, then the possible value of l is a maximum of n-1 = 3-1 = 2

So the value of subshells = 0,1 and 2

8 0

3 years ago

Read 2 more answers

A cake rises as it bakes because a chemical change causes ________to be produced

Sidana [21]

The correct answer to this question is carbon dioxide. A cake rises as it bakes because a chemical change causes carbon dioxide to be produced. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.

5 0

3 years ago

A container of hydrogen at 172 kPa was decreased to 85.0 kPa producing a new volume of 3L. What was the original volume?

Aneli [31]

Answer:

<h2>The answer is 1.48 L</h2>

Explanation:

In order to find the original volume we use the same for Boyle's law which is

$P_1V_1 = P_2V_2$

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the original volume

$V_1 = \frac{P_2V_2}{P_1} \\$

From the question

P1 = 172 kPa = 172000 Pa

P2 = 85 kPa = 85000 Pa

V2 = 3 L

We have

$V_1 = \frac{85000 \times 3}{172000} = \frac{255000}{172000} = \frac{255}{172} \\ = 1.482558139...$

We have the final answer as

Hope this helps you

4 0

3 years ago