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NARA [144]
3 years ago
5

explain how a convection current is set up in water. The explanation has been started for you: When the heating element is switc

hed on, the hot water nearest the element rises because...
Physics
2 answers:
Montano1993 [528]3 years ago
3 0
It is less dense than the water above it and so it the heated less dense water rises upwards to replace the denser water and the denser water falls below to the heating element below, and this also becomes less dense and the circle continues, thus setting up the convection current.

Similar principle is applied in convection current for land and sea breezes.
Kamila [148]3 years ago
3 0
It is less dense than the surrounding water
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You are conducting an experiment inside an elevator that can move in a vertical shaft. A load is hung vertically from the ceilin
Ivan

Answer: The elevator must be accelerating.

Explanation:

As the tension force is opposing to the the force of gravity on the load which is hung vertically, and the tension force can adopt any value in order to comply with Newton's 2nd law, if the tension force is less than the force due to gravity, this means that all system is not in equilibrium, so it must be accelerating.

If we assume that the downward is the positive direction, we can write:

mg - T = ma

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3 years ago
A 2.964 kilogram truck strikes a fence at 7.00 meters/second and comes to
Makovka662 [10]

10.92N

Explanation:

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Unknown:

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The force with which the truck struck the fence is the same as the force the fence acted on the truck with but in another direction.

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learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

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