03:53duration 3 minutes 53 seconds
Forces Between Charged Objects
Two ping-pong balls, hanging on separate strings, are each rubbed with the same piece of fur and are shown to repel and move apart. Next a hanging ping-pong ball is rubbed with a piece of fur and is…
01:03duration 1 minute 3 seconds
RPReplay_Final1652398412
01:23duration 1 minute 23 seconds
Video Recording - Sun Jan 16 2022 16:23:07…
Video Recording - Sun Jan 16 2022 16:23:07 GMT-0700 (Mountain Standard Time)