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UNO [17]
3 years ago
7

If a wave has a frequency of 50 Hz and a wavelength of 2 meters. Find its speed.

Physics
1 answer:
natka813 [3]3 years ago
6 0

Answer:

100 m/s

Explanation:

here we use the wave equation which states that the velocity is equal to the product of the frequency and the wavelength.

so v = 50 × 2

v = 100 m/s

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Answer:

Centripetal force comes from the Latin, centrum = centre and petere=to seek. It acts perpendicular to the object path, towards the center of the curve. This results in change of the direction of the object's velocity but not in change of object's speed.

So only the first option is correct: It acts at a right angle to the object's motion and causes the object to constantly change direction.

Explanation:

7 0
4 years ago
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Optimus Prime is flying straight up at 24 m/s when he accidentally drops his mega-ray blaster and it falls 94 m to the ground be
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Answer:

The time it will take the mega-ray blaster to hit the ground is 2.57 s.

Explanation:

Given;

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The time of fall of the mega-ray blaster is calculated using the following kinematic equation;

h = ut + \frac{1}{2}gt^2\\\\94 = 24t +  \frac{1}{2}(9.8)t^2\\\\94 = 24t + 4.9t^2\\\\4.9t^2 +24t -94 = 0\\\\Use \ formula \ method \ to \ solve \ for \ "t"\\\\a = 4.9 , b = 24, c = -94\\\\t = \frac{-b \ +/- \ \sqrt{b^2 -4ac} }{2a} \\\\t =  \frac{-24 \ +/- \ \sqrt{(24)^2 -4(-94 \times4.9)} }{2(4.9)} \\\\t = \frac{-24 \ +/- \ \sqrt{2418.4} }{9.8}\\\\t = \frac{-24 \ +/- \ 49.177 }{9.8}\\\\t = \frac{-24 \ +\  49.177 }{9.8} \ \ or \ \ t = \frac{-24 \ -\  49.177 }{9.8} \\\\

t = 2.57 \ s \ \ or \ \ t = -7.47 \ s

t = 2.57 s

Therefore, the time it will take the mega-ray blaster to hit the ground is 2.57 s.

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3 years ago
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Use the term chemical change in a complete sentence
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3 years ago
A student rings a brass bell with a frequency of 300 Hz. The sound wave
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Answer:

16 m

Explanation:

i got is right on my ap3x test :)

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3 years ago
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