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SashulF [63]
3 years ago
9

1, 2, & 3.........................

Physics
1 answer:
oksian1 [2.3K]3 years ago
4 0

Answer:

1 is correct

2 is -150  

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A 4 kg bird is flying with a velocity of 4 m/s. What is its kinetic energy?
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32 kg m/s would be the kinetic energy.
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3 years ago
__________ is a developmental defect in which a portion of the spinal cord protrudes outside the vertebrae.
7nadin3 [17]

Answer: Spina bifida

Explanation:

Spina bifida is a developmental defect in which a portion of the spinal cord protrudes outside the vertebrae.

Spina bifida is a birth defect that occurs when there is improper formation of the spine and spinal cord. It's a type of neural tube defect. The structure in a developing embryo that eventually becomes the baby's brain, spinal cord and the tissues that enclose them is the neutral tube.

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Suppose you wish to whirl a pail full of water in a vertical circle at a constant speed without spilling any of its contents (ev
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Answer:

V = 2.87 m/s

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Centripetal acceleration = V^2 / r

where r is the distance of water from the pivot or shoulder.

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and solving the above equation we get:

9.81 = V^2 / 0.84

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6 0
2 years ago
A vinyl record is played by rotating the record so that an approximately circular groove in the vinyl slides under a stylus. Bum
AleksandrR [38]

Answer:

Hits per second=199 hit/s

Explanation:

#Given the angular velocity, \omega=33\frac{1}{3} rev/min , radius of the record r=0.1m and the distance between any two successive bumps on the groove as d=1.75mm.

The linear speed of the record in meters per second is:

v=\omega r=33\frac{1}{3}\times\frac{2\pi}{60}\times 10\times 10^{_2}\\\\=0.3843m/s\\

#From v above, if the bumps are uniformly separated by 1m, then the rate at which they hit the stylus is:

Hits/second=v/d    \ \ \ \ d=1.75mm\\\\=0.3483/0.000175\\\\=199.0385714\approx 199

Hence the bumps hit the stylus at around 199hit/s

8 0
3 years ago
How many kindergarteners do you think you can take on a fight before getting tired or over powered?
yulyashka [42]
Is this a serious question ?
4 0
3 years ago
Read 2 more answers
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