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2 years ago

13

Why is this statement false?

1 answer:

koban [17]2 years ago

7 0

The statement is false because as the temperature of water is decreased from 4C to 0C, <em>expansion</em> occurs.

You should understand that this is very weird behavior for any compound ... within a small temperature range, the stuff actually gets bigger as it gets colder. That's why cubes float in your sody, and bergs float in the ocean.

Water is one of only two known substances that do this. And if water didn't do it, then life on Earth would not be possible.

Hmmm....

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A bobsled team pushes a 132-kilogram bobsled. If the combined push of the team is 450.0 Newtons and the bobsled also experiences

lesantik [10]

Answer:

A. The bobsled acceleration is 3.14 m/s²

Explanation:

Given:

Mass of the bobsled (m) = 132 kg

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Let the acceleration of the bobsled be 'a' m/s².

Now, as per Newton's second law, the net force acting on a body is equal to the product of mass and acceleration.

Net force acting on the bobsled is equal to the difference of applied force and friction and is given as:

$F_{net}=F-f\\\\F_{net}=450.0\ N-35\ N=415\ N$

Now, from Newton's second law,

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Plug in all the values given and solve for 'a'. This gives,

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Answer:

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2. Longitudinal wave motion

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