Which statements accurately describe mechanical waves

Physics

1 answer:

AleksAgata [21]3 years ago

7 0

Answer:

Explanation:

so a mechanical wave transfers energy through a medium but unlike other waves that move through very long distances

the distance of the mechanical wave is different

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Bro why cant I post this T-T

Leni [432]

Answer: 12.0 m/s^2

Explanation:

Let $\alpha$ be the angular acceleration of the end of the rod

Taking torque about the link, we have:

$\tau = W \times OM\\ or\\ \tau = mg\times \left(\dfrac{L}{2}\right)\sin 55^\circ ....(i)$

Torque is also given in terms of moment of inertia of the rod and its angular acceleration i.e.

$\tau = I_{rod}\ \alpha......(ii)$

From equations (i) and (ii) we have:

$mg\times \left(\frac{L}{2}\right)\sin 55^\circ = \left(\frac{mL^2}{3}\right)\alpha\ \ \ \ \ \ \ (\because I_{rod} = \dfrac{mL^2}{3}) \\ \\ \alpha = \left(\frac{3g}{2L}\right)\sin 55^\circ\\ \\ \alpha = \left(\frac{3\times 9.8}{2\times 2.4}\right)\sin 55^\circ\\ \\ \boxed{\alpha = 5.02\ rad/s^2} }$

The acceleration of the end of the rod farthest from the link is given by:

$a = L\alpha\\ \\ a = (2.4\ m)(5.02\ rad/s^2)\\ \\ \boxed{a = 12.0\ m/s^2}$

7 0

2 years ago

Es - Which of the these is a balanced chemical equation?

nalin [4]

<h3>Answer:</h3>

2CO(g) + O₂(g) → 2CO₂(g)

<h3>Explanation:</h3>

What is a balanced chemical equation?

A balanced chemical equation is one that has equal number of atoms of each element involved in the reaction on both side of the equation.

How do we balance chemical equations?

Balancing chemical equations is a try and error process that involves putting appropriate coefficients on the reactants and products in a chemical reaction.

Why is it important to balance chemical equation?