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zhannawk [14.2K]
3 years ago
9

Could someone please help me??

Chemistry
2 answers:
gizmo_the_mogwai [7]3 years ago
8 0

7.9×10^-1 Kg/m³

or, 0.79 Kg/m³

Hope it helps you...

zloy xaker [14]3 years ago
8 0

Answer:

okay in converting g to kg divide my 1000 and in converting cm³ to m³ divide by 1000000

7.9 x 10^-4 g/cm³ to kg/m³

we divide by 1000 and at the same time by 1000000

so that gives 1000000/1000 (it flips)

so we have 7.9 x 10^-4 x 1000000/1000

that gives 7.9 x 10 ^-1 kg/m³

which is 0. 79 kg/m³

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Lorico [155]

Answer:

Potential energy is stored energy. An object has a measurable amount of potential energy depending on where it’s located and how it relates to other objects around it — the energy of position.[1]  

An apple on the floor has very little potential energy. Lift it to the top of a skyscraper, and suddenly it has a lot of potential energy. It can fall to the ground under the force of gravity. It can also interact with other objects on its descent, such as striking a flying bird or landing on a car roof and damaging it.  

When the apple is descending, its potential energy has become kinetic energy, which is the energy of motion. Kinetic energy is the energy a person or an object has due to its motion — in this example, the falling apple. A parked bike on top of a hill has potential energy, which becomes kinetic energy once you start riding it downhill.  

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The potential energy of an object cannot be transferred to another entity – you cannot suck the potential energy out of the apple atop a skyscraper. Kinetic energy is transferable, as witnessed with the falling apple’s kinetic energy damaging a car or hitting a bird.  

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Relationship Potential and Kinetic Energy explained | Waterfall energy image

The relationship between potential energy and kinetic energy is that potential energy can transform into kinetic energy.  

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If we think about a waterfall, some still water at the top of the waterfall has potential energy. It isn’t moving and hasn’t gone over the edge. The water flowing from the waterfall has kinetic energy as it flows.[3]  

A pendulum is an excellent example of this relationship. As the pendulum swings ever higher upwards, its potential energy increases until it reaches its optimum at the highest point of the swing. At the top of the arc, the potential energy turns into kinetic energy as it swings back down.[4]  

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2 years ago
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