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An ideal transformer has 50 turns in its primary and 250 turns in its secondary. When 12-V ac is connected to the primary, the voltage available to the secondary is

Which emits radiation of the highest frequency?

Two lamps, a thick-filament one and a thin-filament one, are connected in parallel to a battery. The current is greater in the lamp with the

To say a circuit is dc is to say that current in the circuit

Two positively-charged plastic straws near each other tend to

Sound refraction depends on the speed of sound being

A coulomb of charge passing through a 6-V battery acquires

Ultrasonic sound that travels at 1530 m/s in ocean water is bounced off the ocean floor and returns to the ship above. If the round trip takes 3 s, the depth of the water is

A lamp rated 23W-120V means that it will deliver 23 W

The amount of energy given to each coulomb of charge flowing through a 12-V battery is