A marathon is 26mi and 385yd long. Estimate how many strides ...

[Coya19@aol.com]

A marathon is 26mi and 385yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride
 
  A) 4.5  106 strides B) 4.5  104 strides C) 4.5  105 strides D) 4.5  103 strides

Question 2

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2, and the separation of the plates is 0.020 mm.
 
  An electric field of 3.9  106 V/m is present between the plates. What is the surface charge density on the plates? (0 = 8.85  10-12 C2/N  m2)
  A) 35 C/m2
  B) 73 C/m2
  C) 17 C/m2
  D) 52 C/m2
  E) 87 C/m2

[coyin]

Answer to Question 1

B

Answer to Question 2

A

[Coya19@aol.com]

Great answer, keep it coming

[jamesnevil303]

Gracias!