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faltersainse [42]
4 years ago
15

HELP ASAP!!!

Physics
2 answers:
11111nata11111 [884]4 years ago
7 0

Answer:

Burning of fossil fuel-cause

Using electric cars- prevention

using aerosols= Cause

Smog- Effect

Loss of ozone layer=Effect

Acid rain- Effect

Smog-reducing filter- prevention

Volcanic eruption- cause

Explanation :

Air pollution cause items : it is defined as that items which made air polluted.

Air pollution effect items: it is defined as that items that are effected by air pollution.

Air pollution Prevention items : It is defined as that items which decrease in air pollution or prevent air to be polluted.

We are given following items

Burning of fossil fuel

Using electric cars

Using aerosols

Smog

Loss of ozone layer

Acid rain

Smog reducing filter

Volcanic eruption

Burning of fossil fuel: It is a cause of air pollution because when it burns then the smoke will cause the air and it makes air polluted.

Using electric cars- It is a prevention of air pollution because when we uses electric cars then no smoke out from vehicle then the air will be fresh and no polluted. Hence, it  prevent air to be pollute.

Using aerosols:It is used in perfumes, insecticides spray etc.  It is also cause of air pollution because it made air polluted.

Smog : It is mixture of  smoke and fog. It is also cause air pollution.

Loss of ozone layer: it is a effect of air pollution.Air pollution effect the ozone layer therefore, hole is created in ozone layer and damage the ozone layer.

Acid rain: It  is contain sulphur and nitrogen oxides  which combine with atmospheric water and produce acids. It is effect of air pollution.Because when fossil fuel burns then the gases emit from burning of fossil fuels combine with atmospheric water and produce acid rain.

Smog reducing filter: It is prevention of air pollution. Because it prevent air to be polluted.It reduce the air pollution.

Volcanic eruption:It is occurs when hot substances comes out from interior of  earth's surface  such as lava,rocks, gases etc. It is also cause an air pollution.

S_A_V [24]4 years ago
5 0
Hi there,

Burning fossil fuel should be a cause. Using aerosols also would be a cause.

Smog is an effect of air pollution. As well as acid rain, also I believe that loss of the ozone layer should be an effect of air pollution. I believe that volcano eruptions should be an cause of air pollution

I believe that smog reducing filters should be in the prevention box, as well for using electric cars.
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The clothes washer in your house consumes 470 kWh of energy per year. Price of the washer is $360 and the lifetime of the washer
VashaNatasha [74]

Answer:

$893

Explanation: the complete question should be

The clothes washer in your house consumes 470 kWh of energy per year. Price of the washer is $360 and the lifetime of the washer is 10 yrs. Energy price in your city is 9 cents per kWh. What is the lifecycle cost of the clothes washer? (assume a maintenance cost of $11 per year)

SOLUTION

Given:

The clothes washe power consumption (PC) is 470 kWh

Price of the washer (P) is $360

lifetime of the washer (L) is 10 yrs

Energy price in the city (E) is 9 cents per kWh (Covert to $ by dividing 100)

maintenance cost (M) is $11 per year

Lifecycle cost = P + (PC × L × E) +M + L

Lifecycle cost = $360 + (470kWh × 10years × 9cents/100) + ($11 × 10years)

=$893

7 0
3 years ago
A 87 kgkg skydiver can be modeled as a rectangular "box" with dimensions 18 cmcm ×× 47 cmcm ×× 180 cmcm . If he falls feet first
garik1379 [7]

Answer:

Therefore the terminal velocity = 1.45 m/s

Explanation:

Terminal velocity: Terminal velocity is the highest velocity of an object when it falls from rest trough a media.

V_t=\sqrt{\frac{2w}{c_d\rho A}}

V_t= terminal velocity

w = weight of the object = mg

c_d = drag coefficient=0.80

A= frontal area

\rho = media density = 1.2 kg/m³

m = mass = 8 kg

g= acceleration due to gravity = 9.8 m/s²

Front area = length× breadth

                 = (18×47)cm²

                 =846 cm²

Therefore the terminal velocity

v_t= \sqrt{\frac{2\times 87\times 9.8}{0.80\times 846 \times 1.2}

    =1.45 m/s

Therefore the terminal velocity = 1.45 m/s

8 0
3 years ago
You weigh 716 newtons on Earth. You
Otrada [13]

Answer:

537 N

Explanation:

The force due to gravity of a planet is:

F = GMm / r²

where G is the universal gravitational constant

M is the mass of the planet

m is the mass of the object

and r is the distance between the object and the center of the planet

On Earth, you weigh 716 N, so:

716 N = GMm / r²

On planet X:

F = G (3M) m / (2r)²

F = 3/4 GMm / r²

F = 3/4 (716 N)

F = 537 N

8 0
4 years ago
A rod is given a charge of +16.7 UC, how many extra protons does It contain?
satela [25.4K]

Answer:

We know that the electronic charge is 1.6 E-19 coulombs

Therefore 1 coulomb of charge contains 1.6  E19 electrons

A charge of 16.7 E6 coulombs therefore contains

N = 16.7 E6 * 1.6 * E-19 = 2.67 E-12 electrons

Also, the charge on the proton equals that on the electron

3 0
3 years ago
A kitten has a mass of 0.8 kg. It is moving forward with a momentum of 0.5 kg • m/s. What is the kitten’s velocity?
morpeh [17]

The kitten's velocity is   V=0.625 m/s

<u>Explanation:</u>

<u>Solving the problem,</u>

Given

Mass=0.8 kg

Momentum=0.5 kg.m/s

Velocity=?

We have the formula,

P=M*V

V=P/M

V=0.5 kg.m/s/0.8 kg

V=0.625 m/s

The kitten's velocity is   V=0.625 m/s

<u />

5 0
4 years ago
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