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coldgirl [10]
3 years ago
5

if an observer is hearing a rise in pitch that means the frequency of the waves in their position are falling

Physics
1 answer:
pochemuha3 years ago
4 0
The statement above is FALSE.
Pitch refers to the highness or lowness of a sound. The pitch of a sound depends on the frequency of that pitch. The higher the frequency, the higher the pitch and the lower the frequency, the lower the pitch. Thus, if an observer is hearing a rise in pitch that means the frequency of the waves in that position are increasing.
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Answer:

n.6 is T

Explanation:

because mass always stays the same where ever you are but weight changes depending on the gravity

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The lanthanides are all radioactive true or false
Oksi-84 [34.3K]

Answer:

False

Explanation:

All the lanthanides are not radioactive in nature. Just one of the lanthanides are radioactive.

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Two blocks of masses 20 kg and 8.0 kg are connected togetherby
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Answer:

14 N

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3 years ago
· A car moves at 12 m/s and coasts up a hill with a
Zigmanuir [339]

Explanation:

Given that,

Initial speed of a car, u = 12 m/s

Aceleration, a = -1.6 m/s²

(a) The displacement of car after 6 seconds is :

d=ut+\dfrac{1}{2}at^2\\\\d=12\times 6+\dfrac{1}{2}\times (-1.6)\times 6^2\\\\d=43.2\ m

(b) The displacement of the car after 9 seconds is :

d=ut+\dfrac{1}{2}at^2\\\\d=12\times 9+\dfrac{1}{2}\times (-1.6)\times 9^2\\\\d=43.2\ m

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7 0
3 years ago
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a_sh-v [17]

Answer: elastic potential energy = 20.27 J

Explanation:

Given that the

Mass M = 0.470 kg

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The maximum elastic potential will be equal to the maximum kinetic energy experienced by the block.

But according to conservative of energy, the maximum kinetic energy is equal to the maximum potential energy experienced by the block of mass M.

That is

K .E = P.E = mgh

Where g = 9.8m/s^2

Substitutes all the parameters into the formula

K.E = 0.470 × 9.8 × 4.4

K.E = 20.27 J

Where K.E = maximum elastic potential energy stored in the spring during the motion of the blocks after the collision which is 20.27J.

4 0
3 years ago
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