Answer:
the answer is below
Explanation:
a) The conductivity of graphite (σ) is calculated using the formula:

where f = frequency = 100 MHz, δ = skin depth = 0.16 mm = 0.00016 m, μ = 0.0000012
Substituting:

b) f = 1 GHz = 10⁹ Hz.

Answer:
Cleavage occurs in straight lines in a mineral, with different minerals exhibiting 1, 2, or 3 directions of cleavage. Fractures however are irregular and follow how specific pattern or cleavages
Answer:
Explanation:
effective delay = delay when no traffic x 
effective delay = 
Answer:
Magnitude of force P needed to start
towing the 40-kg crate = 140.14 N
Location of the resultant normal force acting on the crate, measured from point A = 500
Explanation:
The explanation for this question is given in the attachment below.