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Wood is a poor conductor

A boat at anchor is rocked by waves whose crests are 40 m apart and with wave speed 10 m/s. These waves reach the boat once every

A rubber rod rubbed with fur becomes

A wave with a high frequency has a relatively

When bringing water to a boil in the mountains, the time needed to reach the boiling point is

An electronic game requires 6 V for operation. With a transformer it can be powered by a 120-V outlet. If the primary has 500 turns, the secondary has

The metal detectors that travelers walk through at airports operate via

When you scuff electrons from a carpet onto your shoes, you become

A wave travels an average distance of 1 m in 1 s with a frequency of 1 Hz. Its amplitude is

A galvanometer measures