Answer:
Explanation:
wow that looks really really easy so the answer is
75km=75000m
35min=2100 seconds
Velocity=Displacement/Time
=75000/2100
=750/21
=35.71 m/s
Answer:
Statement B would be correct because alpha particles are the most peretrating radioactive particles.
Explanation:
So we can now calculate the area of the wire
We need also the resistivity specific of cupper, that is:
a) We have to calculate the current that is given by,
b)
c) current density
d) Rate of thermal energy