Answer: 1: kinetic energy and velocity are at zero when the magnets are held apart, and both increases rapidly when they are released and move together. Energy stored in the magnetic field decreases.
2: The energy stored in the system is converted to kinetic, thermal, and sound energy.
3: The energy stored in the magnetic field does not change.
4: Some of the energy stored is converted into kinetic and thermal energy.
5: Two small repelling magnets hold each other in place.
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Answer:
g = 1.19 m / s²
Explanation:
Let's solve this problem in parts.
Let's start by looking for the speed of the pulse in the wire, the wave speed is constant
v = l / t
let's calculate
v = 1.52 / 0.0833
v = 18.25 m / s
now we can use the relationship between velocity and material properties
v =
T = v² μ
let's calculate
T = 18.25² 4.41 10-4
T = 1.4688 10-1 N
finally let's use the equilibrium condition
T - W = 0
W = T
m g = T
g = T / m
we calculate
g = 1.4688 10⁻¹ / 0.123
g = 1.19 m / s²
Kinetic energy is your answer
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