The segment of wire (total length including portions of incoming and outgoing wire = 6R) is formed into the shape shown and carries a current I. What is the magnitude of the resulting magnetic field at the point P?





a.




a

Physics & Space Science

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Three point charges, two positive and one negative, each having a magnitude of 20 mC are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrostatic force on the negative charge?

a. 80 N b. 40 N c. 69 N d. 57 N e. 75 N

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Ozone

A. is a molecule consisting of two oxygen atoms and a hydrogen atom. B. is a molecule consisting of three oxygen atoms. C. is a molecule consisting of two oxygen atoms and a nitrogen atom. D. is an element.

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Tycho used his high accuracy observations to conclude that the Earth revolves around the sun

Indicate whether the statement is true or false

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In the context of planetary geology, what do we mean by outgassing?

A) the release by volcanism of gases that had been trapped in a planetary interior B) the loss of atmospheric gas to outer space C) another name for a volcanic eruption D) the evaporation of water that adds water vapor (a gas) to an atmosphere

Physics & Space Science