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Alexandra [31]
3 years ago
5

An object of mass 0.5 kg is swung in uniform circular motion. The radius is 2 meters, and the force exerted is 4 N. Calculate th

e centripetal acceleration.
Chemistry
1 answer:
ZanzabumX [31]3 years ago
7 0

Answer:

8 m/s²

Explanation:

m = 0.5kg

r = 2m

F = 4 N

f=  \frac{ {mv}^{2} }{r}

make v the subject

v =  \sqrt{( \frac{fr}{m}) }

v = √(4×2)/0.5

v = √16

v = 4 m/s

a =   \frac{ {v}^{2} }{r}

a = 4²/2

a = 16/2

a = 8 m/s²

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Balance the equation

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Always leave hydrogen and oxygen for last.

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A+\text{heat}\rightleftharpoons B

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Increase temperature →  increase in heat → forward direction

Decrease temperature →  decease in heat → backward direction

System C - Increase temperature : Reaction will move forward

System C - Decrease temperature : Reaction will move backward

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The total enthalpy of the reaction comes out to be negative .

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For an exothermic reaction, heat is released during a chemical reaction and is written on the product side.

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Treat heat as a product and on increasing a product at equilibrium, shifts the reaction in the backward direction.

Increase temperature →  increase in heat → backward direction

Decrease temperature →  decease in heat → forward direction

System D - Increase temperature : Reaction will move backward

System D - Decrease temperature : Reaction will move forward

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