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We measured the force of this object, out and then in the water.

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We suspended a weight of 100 grams from the dynamometer.

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Any body plunged in a liquid is subject to a push acting from down to up equals to the weight of the liquid's volume displaced by the object.

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Laser
Interferometer
Gravitational waves
Observatory
It is a laser which makes us to observe gravitational waves.

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Tides are a phenomenon which makes going up and goes down the sea. In a day, there are 2 high tides and 2 low tides, separated by 6 hours between them.
Tides are caused by the moon because of the gravitational force which attracts the Earth. In fact the moon is stretching our planet, and so it gives to Earth a sort of rugby ball shape.

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For m the Universe is the whole of all that exists and what does not exist

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Dr. Padi Boyd is a very cultivated scientist who works at NASA.
When she was a kid, she didn't spend much time thinking about science, she was very interested in writing, art, dance, gymnastics, and music. Today she is part of a project called Astro Capella, which is an a capella group that performs songs about astronomy.
It is at the high school that Padi discovered that she was fascinated by astronomy.
She studied physics in graduate school at Drexel University.
Padi's main interest is analyzing data from astronomical objects to search for periodic and non-periodic variations, to learn about the dynamical interactions taking place in the objects.

I chose to present Dr. Padi Boyd because she is a woman and I think that, when we say "a scientist" most of people think at a man so I wanted present a woman.
Padi is an artist, and me too, I'm an artist, I enjoy dancing and playing an instrument.
Finally, like Padi, I like astronomy, not as much as her but I'm interested in astronomy as well.

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For me the gravitation it is the force of attraction between two different things. For exemple it is because there is the force of gravitation that two planets are "attracted".