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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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DiKsa [7]

<u>Answer: </u>The amount of heat released is 84 calories.

<u>Explanation: </u>

The equation used to calculate the amount of heat released or absorbed, we use the equation:

Q= m\times c\times \Delta T

where,

Q = heat gained  or released = ? Cal

m = mass of the substance = 10g

c = specific heat of aluminium = 0.21 Cal/g ° C

Putting values in above equation, we get:

\Delta T={\text{Change in temperature}}=(10-50)^oC=-40^oC  

Q=10g\times 0.21Cal/g^oC\times-40^oC

Q = -84 Calories

Hence, the amount of heat released is 84 calories.

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3 years ago
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Answer:

A

Explanation:

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aleksandrvk [35]
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