IB Physics 12 Mr. Jean October 10 th, 2014. In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass.

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IB Physics 12 Mr. Jean October 10 th, 2014

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (a)action at a distance

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (a)action at a distance In the action-at-a-distance theory, an object is believed to exert a force directly on another object some distance away.

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (b) fields

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (b) fields A field is the influence that an object (mass, charge, or magnet) has on the properties of the space around it.

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (c) electric field intensity

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (c) electric field intensity Electric field intensity is the electric force exerted per unit charge at a point in space.

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (d) gravitational field intensity

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (d) gravitational field intensity Gravitational field intensity is the gravitational force exerted per unit mass at a point in space.

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (e)field lines

In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass. (e)field lines Field lines indicate the direction of the field vectors throughout space, and their density indicates the strength of the field.

Question to do: 1)Calculate the gravitational field intensity at a height of km from Earth’s surface. 2)Challenge Question: Two point charges, +36  C and –28  C, are 15.0 cm apart in a vacuum. What is the electric field intensity at a point midway between them?

Question to do: 1)Calculate the gravitational field intensity at a height of km from Earth’s surface. 2)Challenge Question: Two point charges, +36  C and –28  C, are 15.0 cm apart in a vacuum. What is the electric field intensity at a point midway between them?