A plastic scale is rubbed against dry hair. The scale is placed over small bits of paper. (i) What is your observation? (ii) is it contact or non contact force? (iii) Why so they attract each other? (iv) Name the force. (v) Are they all charged bodies? (vi) If the distance between the scale and the bits of paper increases,then what will happen? (vii) Explain question no. (vi) with Coulomb's law.
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Hey Hailey!
I) you will observe that the particles will stick to the rubber
II) YES, it is a contact force
III)Because when we rub it to hairs it got charged and charged objects attract particles.
IV)It is electrostatic force.
V)NO only rubber had charge and its charged particles are in motion whether paper has at rest.
VI)Force will decrease(force inversely proportional to square of distance)
VII) coulomb's law states that force directly proportional to product of charges and inversely proportional to square of distance between them
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I) you will observe that the particles will stick to the rubber
II) YES, it is a contact force
III)Because when we rub it to hairs it got charged and charged objects attract particles.
IV)It is electrostatic force.
V)NO only rubber had charge and its charged particles are in motion whether paper has at rest.
VI)Force will decrease(force inversely proportional to square of distance)
VII) coulomb's law states that force directly proportional to product of charges and inversely proportional to square of distance between them
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