The spring balance provides a mass measurement
Newtons Law of motion
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Answer:
0.0198 dollars
Explanation:
We first obtain the total energy drawn by the light bulb in kilowatt-hour (kW-hr) using the following relationship;
Energy = power rating x time
Given;
power rating = 60W,
time = 3hrs
Therefore,
Energy consumed = 60W x 3hr
Energy consumed = 180W-hr = 0.18kW-hr
We then multiply this energy in kW-hr by he amount charged per unit kW-hr as follows;
Given that 1kW-hr= 0.11 dollars
0.18kW-hr = 0.18 x 0.11
= 0.0198 dollars
The answer is A. <span> A flow of positive and negative charges. </span>
