Do you think it is possible to control the magnetic properties of a magnet? Can a magnet be turned on and off? Explain your answer.

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.