Why do tin roofs make creaking sounds on hot days?
2 answers:
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Answer:
T = 676 N
Explanation:
Given that: f = 65 Hz, L = 2.0 m, and ρ = 5.0 g = 0.005 kg
A stationary wave that is set up in the string has a frequency of;
f =
⇒ T = 4M
Where: t is the tension in the wire, L is the length of the wire, f is the frequency of the waves produced by the wire and M is the mass per unit length of the wire.
But M = L × ρ = (2 × 0.005) = 0.01 kg/m
T = 4 × ×
× 0.01
= 4 × 4 ×4225 × 0.01
= 676 N
Tension of the wire is 676 N.
Your answer is...
<em>B) Electrons in valence shells are shared between nuclei.</em>
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Explanation:
The simple definition of a covalent bond is a strong force when two atoms share one or more pairs of electrons.
Popular examples of covalent bonds would be:
Carbon Monoxide (CO)
Methane ()
Water ()