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Butoxors [25]
3 years ago
13

Which statement describes a way electromagnetic waves are different from mechanical waves?

Physics
1 answer:
Goryan [66]3 years ago
7 0

a. Wrong. EM waves can travel through matter OR vacuum.

b. True, but so can mechanical waves.

c. Wrong. Waves transfer energy, not matter.

d. This is it. EM waves can travel through empty space, and mechanical waves can't.

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A stone is thrown with an initial speed of 11.5 m/s at an angle of 50.0 above the horizontal from the top of a 30.0-m-tall build
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Answer:

The magnitude of the horizontal displacement of the rock is 7.39 m/s.

Explanation:

Given that,

Initial speed = 11.5 m/s

Angle = 50.0

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Using formula of horizontal component

v_{x}=u\cos\theta

Put the value into the formula

v_{x}=11.5\times\cos50

v_{x}=7.39\ m/s

Hence, The magnitude of the horizontal displacement of the rock is 7.39 m/s.

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A hotel wants to put a fence around a circular spa. The radius of the spa is 5/√2-1 feet. If the fence is built along the immedi
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It is important to look at all the information's that are given in the question very closely. Let us write them write first.

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Now
Perimeter of the circle = </span><span>2πr
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<span>                                    = 2π(5/(√2+1))/(2-1) </span>
<span>                                    = 10π(√2+1)  

I hope that the procedure is clear enough for you to understand.</span>
5 0
3 years ago
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