an object falls from a high building. ignoring air resistance, what will its velocity be after 7 seconds of falling

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Imagine that current is flowing couterclockwise around a squre loop of wire in front of you

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Answer: The loop's right side approaches you.

Two wires are used to suspend a sign that weighs 500 N. The two wires make an angle of 100° between each other. If each wire is exerting an equal amount of force how much force does each wire exert?

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The force each wire exert will be "390.62 N".

The given values are:

Weight,

mg = 500 N

Angle,

θ = 100°

As we know,

The sum of vertical forces = 0

then,

→ $\Sigma Fy = 0$

Now,

→ $F Cos (50) +F Cos (50) = mg$

By substituting the value, we get

→ $2F Cos (50) = 500$

→ $F = (500)/(2 Cos (50))$

→ $= (500)/(2(0.64))$

→ $= 390.62 \ N$

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a friend tells you that his family always complains about the noise when he practices his electric guitar in his room. write at least three recommendations for how our friend might reduce the sound that escapes from his room. why do these changes to the room help reduce noise?