Two identical positive charges are separated by a distance of 2.4 × 10−10 m. If the charges repel each other with a force of 5.7 × 10−9 N, what is the magnitude of each positive charge? A.
2.8 × 10−8 C
B.
1.9 × 10−19 C
C.
1.2 × 10−5 C
D.
3.6 × 10−20 C

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

Select the correct answer. anna will wear a black dress when she attends het cousin's wedding. which color(s) does the dress absorb? a. all colors b. no colors c. red and green d. white

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force