A 66-kg woman runs up a flight of stairs having a rise of 4.0 m ...

[BrownTown3]

A 66-kg woman runs up a flight of stairs having a rise of 4.0 m in a time of 4.2 s. What average power did she supply?
 a. 380 W
  c. 620 W
  b. 560 W
  d. 670 W

Question 2

The charge per unit length on an insulator is . On a 2.0-m length of this material, what is the difference in the number of electrons and the number of protons?
 a. There are more electrons than protons.
  b. There are more protons than electrons.
  c. There are more protons than electrons.
  d. There are more electrons than protons.

[quynhmickitran]

Answer to Question 1

C

Answer to Question 2

B

[BrownTown3]

Thanks for the timely response, appreciate it

[alexanderhamilton]

Excellent