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3 years ago

How can you analyze a compound formula

Physics

1 answer:

STALIN [3.7K]3 years ago

4 0

Answer:

Chemical formulas tell you how many atoms of each element are in a compound, and empirical formulas tell you the simplest or most reduced ratio of elements in a compound. If a compound's chemical formula cannot be reduced any more, then the empirical formula is the same as the chemical formula. Combustion analysis can determine the empirical formula of a compound, but cannot determine the chemical formula (other techniques can though). Once known, the chemical formula can be calculated from the empirical formula.

Explanation:

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Which phrase best describes the path of a light wave

Reptile [31]

Answer:

Explanation:

Straight away from the source

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2 years ago

What has greater inertia: a heavy truck at rest or a rolling skateboard?

e-lub [12.9K]

Answer:

A rolling Skateboard

Explanation:

Hope it was right

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2 years ago

When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for

GaryK [48]

Answer:

$F=4945.7N$

Explanation:

Most of the power developed by the engine is used to compensate for the mechanical energy loss due to frictional forces because these are the only forces on the horizontal direction the automobile is subjected to, besides of that generated by the engine itself. If the automobile is moving at constant speed, then these the force the engine provides is equal to the total friction force acting on the car.

We calculate then the force the engine provides. We know that power relates to work by the equation $P=\frac{W}{t}$ , and that work relates to force by the equation $W=Fd$ , so combining them we have:

$P=\frac{Fd}{t}=Fv$

Which can be written as:

$F=\frac{P}{v}$

And since $179hp$ are $179hp(\frac{746W}{1hp})=133534W$ , for our values the force the engine provides is:

$F=\frac{133534W}{27m/s}=4945.7N$

Which is also then the total friction force acting on the car.

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2 years ago

How does the size of the ears help to keep an artic fox warm in a cold environment?

Mice21 [21]

As the artic fox has very small ears it helps prevent the heat from his body from escaping quickly.
The bigger the ears the faster the heat escapes basically.

7 0

3 years ago

The black mamba is one of the world's most poisonous snakes, and with a maximum speed of 18.0 km/h, it is also the fastest. supp

photoshop1234 [79]

Speed of the black Mamba = 18 km/h = 5m/s

now the distance that black mamba cover to catch prey

$d = v*t$