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Alex_Xolod [135]
3 years ago
5

In the equation for elastic potential energy below, what is represented by the symbol k? Ee = ½ × k × e²

Physics
1 answer:
yarga [219]3 years ago
5 0

Answer:

K is the spring/elastic constant measured in Newton per metre square (N/m²)

Explanation:

E = ½Ke²

In the equation above,

E is the energy in Joules (J)

K is the elastic/spring constant in Newton per metre square (N/m²)

e is the extension in metre (m)

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A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.25. Its velocity at point A is 8.4 m/
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Answer:

1.06 secs

Explanation:

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Making Δt subject of formula:

Δt = (v - u) / -μg

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Δt = -2.6/ -2.45

Δt = 1.06 secs

It took the sled 1.06 secs to travel from A to B.

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