Use the formula:

, where P is power (watts), I is current (amperes) and V is potential difference (volts).
For the first heater:


For the second heater:


For the third heater:

Answer:
Average velocity is the displacement of an object over time that also in a specified direction...
Explanation:
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The differences in energy released by earthquakes are too large to express with linear scales.
One end is sealed to prevent air from disturbing the scale and measures. Therefore, a Mercury Barometer works on the principle of balancing the atmospheric pressure with the volume of mercury present in the device