To change km to m: multiply km by 1000 In a thundercloud there may be an electric
charge of 33 C near the top of the cloud and
−33 C near the bottom of the cloud.
If these charges are separated by about
3 km, what is the magnitude of the electric force between these two sets of charges?
The value of the electric force constant is
8.98755 × 109 N · m2
/C
2
.
Answer in units of N.

Fran would like to estimate the mean amount of time it takes people in her town to travel to work. the town's population is 150,000 and about 90,000 of those are working adults. which statements are true? select each correct answer. there is no way to infer the value of the mean. she must collect data for all 90,000 working adults and calculate the mean. a larger sample of working adults will provide a better estimate of the true mean than a smaller sample. the population of working adults is too large for using a sample to estimate the mean of the entire group. if she takes a random sample of the population of working adults in her town, the mean for that group is likely close to the mean for the entire group.

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0