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ollegr [7]
4 years ago
9

A student is investigating two types of waves. Which question can the student ask to determine whether a wave is electromagnetic

?
A Can the wave travel through a vacuum?
B
Can the wave travel through a liquid?
C
Can the wave travel through a solid?
D
Can the wave travel through a gas?
Physics
1 answer:
Romashka-Z-Leto [24]4 years ago
6 0

Answer: A

Can the wave travel through a vacuum

Explanation:

Electromagnetic waves can propagate through space, and vacuum carrying electromagnetic radiant energy without the help of any medium for its propagation. But mechanical wave can't propagate through a vacuum without the help of a medium.

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A circular rod with a gage length of 3.5 mm and a diameter of 2.8 cmcm is subjected to an axial load of 68 kN . If the modulus o
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To solve this problem, we will apply the concepts related to the linear deformation of a body given by the relationship between the load applied over a given length, acting by the corresponding area unit and the modulus of elasticity. The mathematical representation of this is given as:

\delta = \frac{PL}{AE}

Where,

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Our values are given as,

l = 3.5m

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A = \frac{\pi}{4}(0.028)^2 \rightarrow 0.0006157m^2

Replacing we have,

\delta = \frac{PL}{AE}

\delta = \frac{( 68*10^3)(3.5)}{(0.0006157)(200*10^9)}

\delta = 0.001932m

\delta = 1.93mm

Therefore the change in length is 1.93mm

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