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Varvara68 [4.7K]
2 years ago
14

The relative highness or lowness of a sound is called ______. Multiple Choice pitch timbre dynamics octave

Physics
1 answer:
Assoli18 [71]2 years ago
8 0
Pitch is the answer…….
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a projectile is launched at an angle of 30 degrees and lands later at the same level. if it's initial speed is 50 m/s, solve for
Mrrafil [7]
using \: the \: formula \\ t = \frac{2u \sin( \alpha ) }{g} where \: u = initial \: speed \: \\ \alpha = angle \: of \: projection \\ g = acceleration \: due \: to \: gravity \\ \frac{2 \times 50 \times \sin(30) }{10} \\ \frac{100 \times 0.5}{10} = \frac{50}{10} = 5seconds

Maximum height
= (Usinα)^2/2g
(50*0.5)^2/20
25^2/20
625/20
=31.25metres
horizontal distance = Range= [U^2 * sin2α]/g
[50^2 * sin60]/10
2500 * 0.8660/10
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3 years ago
Measure the amount of space an object takes up is what
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That's what scientists and other technical people call the object's "<em>volume</em>".

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A sled with no initial velocity accelerates at a rate of 3.2 m/s2 down a hill. How long does it take the sled to go 15 m to the
grin007 [14]
S = ut + 1/2 at^2
a = 3.2 m/s^2
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Find t
15 = 1/2(3.2)t^2
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30/ 3.2 = 9.38
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It takes 3.06 seconds
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