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Vikki [24]
3 years ago
12

Which two statements are true of electromagnetic waves?

Physics
2 answers:
tiny-mole [99]3 years ago
8 0

Answer:

AD

Explanation:

electromagnetic waves do not need a medium to travel, examples are ultraviolet radiation and infrared radiation.

Angelina_Jolie [31]3 years ago
6 0

Answer:

A and D

Explanation:

Just did it

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A thin rod (length = 1.09 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge.
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Answer:

a) w = 4.24 rad / s , b) α  = 8.99 rad / s²

Explanation:

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         h = L

         w = √ 2g / L

Let's calculate

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b) Let's use Newton's equation for rotational motion

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         F L = (m L²) α

The force applied is the weight of the object, which is at a distance L from the point of gro

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          α  = g / L

          α  = 9.8 / 1.09

          α  = 8.99 rad / s²

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