The force between two parallel wires carrying currents in the same direction is attractive. It is repulsive if the currents are in opposite directions.

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A conveyor belt at a recycling plant launches bottles and bottle caps into the air, so that an automatic image recognition devic

dem82 [27]

(a) The initial speed at which the bottles are launched is 4.27 m/s.

(b) The horizontal displacement at which the bottle land is 1.75 m.

<h3>Initial speed of the bottle</h3>

The initial speed of the bottle is calculated as follows;

$T = \frac{2usin\theta}{g}$

where;

T is time of flight
u is the initial speed

2usinθ = Tg

u = Tg/(2sinθ)

u = (0.5 x 9.8)/(2 x sin35)

u = 4.27 m/s

<h3>Horizontal displacement of the bottle</h3>

X = u²sin(2θ)/g

X = (4.27² x sin(70))/(9.8)

X = 1.75 m

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