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.
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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
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.
Tycho used his high accuracy observations to conclude that the Earth revolves around the sun
Indicate whether the statement is true or false
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