The initial velocity of the potato is 54.41 m/s.
The given parameters:
- <em>Mass of the potato, m = 0.34 kg</em>
- <em>Mass of the cart, m = 5.0 kg </em>
- <em>Velocity of the recoil, u₂ = 3.7 m/s</em>
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The initial velocity of the potato is calculated by applying the principle of conservation of energy as follows;

Thus, the initial velocity of the potato is 54.41 m/s.
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The magnetic field midway between the two wires is
.
It is given that Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m.
We need to determine the magnetic field midway between the two wires.
A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.
Magnetic field is a place in space near a magnet or an electric current where a physical field is created from a moving electric charge that creates force on another moving electric charge.
B=B1+B2
=
= 
= 
Hence, the magnetic field midway between the two wires is 
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Answer:
energy that behaves as if they were particles
Explanation: