# Intro to Physical Science

Define physical science

Andrew: I went to www.dictionary.com and typed in physical science. The following is what it returned.I hope this helps.
physical science

1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy.
2. these sciences collectively.

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1. A cannon that is 10m long is designed to launch a 10kg ball over a castle wall.
In order to do this the ball must have a speed of at least 50m/s as it exits the
cannon. For every 10kg of explosives used, the force on the ball in the cannon
increases by 1000N. How many kg of explosives should they use?
2 Gravitation(100pts.)

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2. it a substance that their molecurle can be identified

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3. Two 2.2 kg physical science textbooks on a bookshelf are 0.29 m apart. What is the magnitude of the gravitational attraction between the books?

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4. 2.By what criteria might you determine whether a question might be answered using the scientific method?

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5. 2,5mol of chlorine gas (ci2)

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