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vichka [17]
3 years ago
13

Help me do this question ​

Physics
1 answer:
Zepler [3.9K]3 years ago
3 0

Answer:

c20800

Explanation:

go to bear khana bro your book looks cheap go and study in durbar kanda school and take somee cash and do ash ah boy

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When a sound wave encounters a barrier, what happens?
Tema [17]
Sound waves will either be reflected (echo effect) or absorbed (dissipated) depending upon the material make-up of the barrier
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Why dose the moon appear to move frome the east to the west in the night sky?
Gala2k [10]

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Because Earth rotates on its axis from west to east

Explanation:

5 0
3 years ago
A 1.1-kg object is suspended from a vertical spring whose spring constant is 120 N/m. (a) Find the amount by which the spring is
andriy [413]

Answer:

e = 0.0898m

v = 2.07m/s

Explanation:

a) According to Hooke's law

F = ke

e is the extension

k is the spring constant

Since F = mg

mg = ke

e = mg/k

Substitute the given value

e = 1.1(9.8)/120

e = 10.78/120

e = 0.0898m

Hence it is stretched by 0.0898m from its unstrained length

2) Total Energy = PE+KE+Elastic potential

Total Energy = mgh +1/2mv²+1/2ke²

Substitute the given value

5.0= 1.1(9.8)(0.2)+1/2(1.1)v²+1/2(120)(0.0898)²

Solve for v

5.0 = 2.156+0.55v²+0.48338

5.0-2.156-0.48338= 0.55v²

2.36 =0.55v²

v² = 2.36/0.55

v² = 4.29

v ,= √4.29

v = 2.07m/s

Hence the required velocity is 9.28m/s

4 0
3 years ago
If molecules in a substance move FASTER will the TEMPERATURE increase or decrease?
statuscvo [17]

The temperature will increase

4 0
3 years ago
I need help!!!!<br> Please and thank u!
alexandr1967 [171]

Answer:

False

True

False

True

False

True

Explanation:

5 0
3 years ago
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