Answer:
Explanation:
The resistance of a wire is given by:
where
is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire
For the wire in this problem:
L = 7.0 m
r = d/2 = 0.07 cm = 0.0007 m, so the area is
Solving for R,
If they are both pushing with the same force but in opposite directions,
and if there are no other forces on the box besides them pushing, then
the net force on the box is zero and it just lays there, as if there were
no forces on it at all.
Tycho Brahe ( 1546 - 1601 ) was a Danish astronomer known for his accurate astronomical and planetary observations. Tycho tried to produce a model with the best of both Ptolemy ( earth-centered solar system ) and Copernicus ( sun-centered solar system ).
Answer: B ) observation.
The nervous system and the circulatory system
