Author Question: A marathon is 26mi and 385yd long. Estimate how many strides would be required to run a marathon. ... (Read 85 times)

Coya19@aol.com · **on:** Jul 29, 2018

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