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2 years ago

5

How long does it take to freeze ice cubes?

1 answer:

eduard2 years ago

4 0

<span>It actually depends on what water and what is in the water that you are freezing. Normal temperature water will freeze in about 3 to 4 hours, if you want it to really be hard, but it can already start freezing in about an hour. However, boiling water said to freeze faster.</span>

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2 years ago

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Which expression is equivalent to g−m ÷ gn?

Vinvika [58]

<u>Answer</u>

(g²n - m)/(gm)

<u>Explanation</u>

g - m ÷ gn = g - m/gn

Make the equation have the same denominator

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2 years ago

Shelby the Skater's rocket provides a forward force of

DochEvi [55]

Answer:

$a=3.17\ m/s^2$

Explanation:

Given that,

Force force acting on the Skater's rocket is 220 N

Resistive force acting on it, F' = 30 N

Mass of Shelby, m = 60 kg

We need to find the acceleration of Shelby. Net force acting on Shelby is given by :

Net force = 220-30

= 190 N

The formula of net force is :

F = ma

a is acceleration of Shelby

$a=\dfrac{F}{m}\\\\a=\dfrac{190}{60}\\\\a=3.17\ m/s^2$

So, the acceleration of Shelby is $3.17\ m/s^2$

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2 years ago