According to their web site on September 20, 2019, Rolla Municipal Utilities charges 8.9¢/kWh for residential electricity. A 100W light bulb is left connected to a 120V outlet for a week while the resident is away. a. Determine the cost of leaving the light bulb on. b. Determine the number of electrons that pass through the light bulb.

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”

Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?