If for every action force an equal and opposite reaction force exlsts, how can anything ever be accelerated? The action and reaction forces act on different objects, therefore the net force is not always zero.
The action force, when accelerating, is greater than the reaction force.
The reaction force is not always in the same vector direction as the action force.
none of the above
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DANALITIN

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.