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Leviafan [203]
3 years ago
15

A boy who weighs 30 kg is skateboarding at a speed of 5 m/s. What is the boys kinetic energy?

Chemistry
1 answer:
Assoli18 [71]3 years ago
6 0

the answer is 375 joules

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A gas has a pressure of 810 kPa at 227°C. What will its pressure be at 27°C?
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486 kPa will be the pressure of gas at 27 degrees.

Explanation:

Data given :

Initial pressure of the gas P1 = 810 kPa

initial temperature of the gas T1 = 227 degrees OR 500.15 K

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Gay Lussac's law is used to calculate the pressure of the gas at 27 degrees or 300.15 K

\frac{P1}{T1} = \frac{P2}{T2}

P2 = \frac{P1T2}{T1}

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P2 = \frac{810 X 300.15}{500.15}

P2 = 486 KPa

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