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3 years ago

If cooling occurred at the bottom of a lake instead of its surface, the lake

2 answers:

8 0

I do not believe that the lake would freeze at the bottom only because of the fact that fish ( sharks mostly) live deep in the waters and it is actually warmer down there. the higher up you are, the more closer you are to the atmosphere and the climate change. Anything way under the water does not always get affect by the climate. the only thing that would affect anything for the most part underwater could be underwater volcanic eruptions and underwater earthquakes, which would essentially cause the bottom of the ocean or lake to split and become reefs.

AlladinOne [14]3 years ago

5 0

No because the top has more oxygen to it which will break the particles up and have them freeze easier.

so if something froze at the bottom of the lake it would float to the top and that's why water always freezes from the top down :))

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3 years ago

Calculate the acceleration of a 1000 kg car if the motor provides a small thrust of 1000 N and the static and dynamic friction c

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Explanation :

It is given that,

Mass of the car, m = 1000 kg

Force applied by the motor, $F_A=1000\ N$

The static and dynamic friction coefficient is, $\mu=0.5$

Let a is the acceleration of the car. Since, the car is in motion, the coefficient of sliding friction can be used. At equilibrium,

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3 years ago

A car travels a distance of 320 km in 4 hours. What is your average speed in meters per second?

Andreas93 [3]

Answer:

22.2 m/s

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First, we need to convert km to m by multiplying by 1000. This means that the car traveled 320 000 meters.

Next, we convert hours to minutes by multiplying by 3600 (the number of seconds in an hour). This means that overall, the car traveled 320 000 m in 14 400 seconds.

The average speed can be found by using the equation $\frac{distance}{time}$ . After substitution, this gives the fraction $\frac{320 000}{14 400}$ , which reduces to 22 $\frac{2}{9}$ m/s, or about 22.2 m/s.

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4 years ago

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timofeeve [1]

Answer:

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3 years ago

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