A student tested a variety of interacting forces to determine how they would result in motion of an object. If the student used
the forces as shown in the lettered choices above, predict which results would occur. Select ALL that apply.A) The variable shown by letter B would result in a movement of the object to the left. B) The variable shown by letter B would result in a movement of the object to the right. C) The variable shown by letter A would result in a movement of the object to the right. D) The variable shown by letter C would result in a movement of the object to the right. E) The variable shown by letter D would result in a movement of the object
1 answer:
You might be interested in
Answer:
The radius of the cable is 0.0083 m or 8.3 mm.
Explanation:
The resistance of copper cable of 1 meter length will be given by
.... (i)
where the resistivity of copper is , and l is the length of the wire which is considered to be 1m, and a is the cross sectional area of the wire in
.
From the formula of power we know that, .... (ii)
Therefore 2 W/m = .... (iii)
where the resistance,R, actually means the resistance of the cable per meter.
Therefore R ( resistance of cable per meter)
= ohms / meter. .... (iv)
Therefore from (i)
=
..... (v)
where cross sectional area of the cable, a = ,
where r is the radius of the cable, and length of cable,l = 1m.
Therefore r =