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3 years ago

14

What is the gasoline doing to our environment?

1 answer:

luda_lava [24]3 years ago

5 0

Gasoline use contributes to air pollution
Gasoline is a toxic and highly flammable liquid. The vapors given off when gasoline evaporates and the substances produced when gasoline is burned (carbon monoxide, nitrogen oxides, particulate matter, and unburned hydrocarbons) contribute to air pollution. Burning gasoline also produces carbon dioxide, a greenhouse gas.

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1. Calculate the momentum of a 1,500 kg car traveling at 6 m/s.

ziro4ka [17]

Answer:

1. $9000kgm/s$

2. $258,000kgm/s$

Explanation:

1.Momentum is given as the product of mass by velocity of an object.

Momentum, $p=mv$

m=1,500kh, v=6m/s

$p=1500*6\\p=9000kgm/s$

2.Momentum, $p=mv$

m=7800kg, v=30m/s

$p_1=7800*30\\p_1=234,000kgm/s\\$

new mass=7800+800=8600

As mass is increased, so does the resultant velocity as mass is directly proportional to velocity.

$p_2=8600*30\\p_2=258,000kgm/s$

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3 years ago

Why can characteristics properties be used to identify unknown substances

frozen [14]

Characteristic properties are used because the sample size and the shape of the substance does not matter.

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2 years ago

How does a magnet separate mixtures like sand and iron filings?

algol13

Answer:

because iron is magnetic and sand is not

Explanation:

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A sample of juice has a pH of 4.2. Whsat is the concentration in mol/dm3 of OH in the juice?<br>

Annette [7]

Answer:

6 * 10^-4M

Explanation:

use this equation

[ H + ] = 10 − pH

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