Which of the following statements correctly compares the speed of waves?
A.
Sound, a mechani...
Physics, 15.12.2020 18:10 netflixacc0107
Which of the following statements correctly compares the speed of waves?
A.
Sound, a mechanical wave is fastest through vacuum and slowest through solids. Light which is an electromagnetic wave is fastest through solids and slowest through vacuum.
B.
Sound, an electromagnetic wave is fastest through vacuum and slowest through solids. Light which is a mechanical wave is fastest through solids and slowest through vacuum.
C.
Sound, a mechanical wave is fastest through solids and slowest through gases. Light which is an electromagnetic wave is fastest through vacuum and slowest through solids.
D.
Sound, an electromagnetic wave is fastest through solids and slowest through gases. Light which is a mechanical wave is fastest through vacuum and slowest through solid
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Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity
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Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.
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