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BARSIC [14]
3 years ago
6

This is a science question. What is the acceleration of the dragster?

Chemistry
2 answers:
Katena32 [7]3 years ago
8 0
The acceleration is -8.89 m/s
Zepler [3.9K]3 years ago
3 0

Answer:

8.89m/s^2

Explanation:

The question is asking what rate the dragster is accellerating. In science, acceleration is a change in velocity (speed) and direction. So, the speed decreases 40 m/s. It does this in 4.5 seconds. That's 40m/4.5 seconds. So, when you simplify that, it's 8.999999...m/s.

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brilliants [131]
1 μL = 10^-6 L by definition

So...
82 μL = 82x10^-6 L = 8.2x10^-5 L


3 0
3 years ago
What is the size of a popped balloon
Makovka662 [10]
9,000 meters
Because density is altered by altitude, the helium balloon can reach a height of 9,000 meters, or 29,537 feet. Anything higher than this altitude will cause the helium within the balloon to expand and the balloon to pop.
3 0
3 years ago
When 8.2 grams of LiBr are dissolved in enough water to create a 150-gram solution, what is the solution's concentration, expres
Dahasolnce [82]

Answer:

5.46% is the percent by mass concentration of the solution.

Explanation:

Mass of LiBr= 8.2 g(Solute)

Mass of solution = 150 g (Solution)

Mass of solution = Mass of solute + Mass of solvent

Mass of solute <  Mass of solvent   (Always)

Mass of water = 150 g - 8.2 g = 141.8 g (solvent)

Mass percentage is given as:

\frac{\text{mass of solute}}{\text{mass of solution}}\times 100

Mass\%=\frac{8.2 g}{150 g}\times 100=5.46\%

5.46% is the percent by mass concentration of the solution.

5 0
3 years ago
Why do scientists use SI?
garik1379 [7]
The SI<span> system, also called the metric system, is </span>used<span> around the world. There are seven basic </span>units<span> in the </span>SI<span> system: the meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd).

</span>
3 0
4 years ago
Read 2 more answers
Where do most earthquakes occur? Where do most volcanoes occur? Why do they occur here?
musickatia [10]

Answer:

The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. The majority of Earth's volcanoes and earthquakes take place along the Ring of Fire

Explanation:

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4 0
3 years ago
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