Alightbulb is connected to a 60 hz power
source having a maximum voltage of 156 v.,
what is the resistance of the light bulb that
uses an average power of 38.8 w?

The resistance of the light bulb is, R = 4.02 Ω                

Explanation:

Given data,

The frequency of the current, f = 60 Hz

The voltage of the source, V =  156 V

The power usage of the bulb, P = 38.8 watts

The resistance of the light bulb is given by the formula,

                                            R = V² / P

Substituting the values,

                                             R = 156 / 38.8

                                                 = 4.02 Ω      

Hence, the resistance of the light bulb is, R = 4.02 Ω                

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles