14. This diagram describes the mechanisms of Coulomb's law in Physics/Electromagnetism; two equal (like) point charges repel each other, and two opposite charges attract each other, with an electrostatic force F which is directly proportional to the product of the magnitudes of each charge and inversely proportional to the square of the distance r between the charges. Regardless of attraction, repulsion, charges or distance, the magnitudes of the forces, |F| (absolute value), will always be equal. K C is Coulomb's constant.
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19. S N – + High voltage Cathode Ray Tube Anode A B C Cathode Fluorescent screen
20. S N – + High voltage Anode Cathode Fluorescent screen
21. S N – + No external fields High voltage Anode Fluorescent screen Cathode B
22. S N – + Magnetic field applied High voltage Anode A Fluorescent screen Cathode
23. S N – + Electric field applied High voltage Anode C Fluorescent screen Cathode
24. S N – + High voltage Anode Cathode Fluorescent screen
25. S N – + Effects of electric field and magnetic field cancel High voltage Anode B Fluorescent screen Cathode
28. A cathode ray produced in a discharge tube travelling from the cathode (left) to the anode(right). The ray itself is invisible, but the fluorescence of a zinc sulfide coating on the glass causes it to appear green
29. The cathode ray is bent downward when the north pole of the bar magnet is brought toward it. When the polarity of the magnet is reversed, the ray bends in the opposite direction
50. HOW IS THE CHARGE OF A PARTICLE MEASURED? Atomizer Viewing microscope Charged plate (+) Charged plate Small hole Oil droplet under observation Oil droplets (–)
51. Small hole Atomizer Viewing microscope HOW IS THE CHARGE OF A PARTICLE MEASURED? Charged plate (+) Charged plate (–)
52. Atomizer Viewing microscope HOW IS THE CHARGE OF A PARTICLE MEASURED? Charged plate (+) Charged plate Small hole Oil droplets (–)
53. Atomizer Viewing microscope HOW IS THE CHARGE OF A PARTICLE MEASURED? Charged plate (+) Charged plate Small hole Oil droplet under observation Oil droplets (–)
73. What he got They observed that although majority of the alpha particles passed through undeflected, some were only slightly deflected, some were scattered by more than 90 degrees and a few by nearly 180 degrees or almost completely turned back