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Korolek [52]
4 years ago
12

Stars originate as large bodies of slowly rotating gas. because of gravity, these clumps of gas slowly decrease in size. the ang

ular velocity of a star increases as it shrinks because of
Physics
1 answer:
serg [7]4 years ago
5 0
<span>Stars originate as large bodies of slowly rotating gas. because of gravity, these clumps of gas slowly decrease in size. the angular velocity of a star increases as it shrinks because of the angular momentum conservation.

This is because in a rotary system with decreasing diameter, the angular momentum should be conserved (as long as the net torque is zero) based on physics conservation laws</span>
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What is the sum of 130+125+191? A. 335. B. 456. C. 446. D. 426.
Vesnalui [34]
1. C- 446
2. A- 778
3. B- 400
4. A- 11
8 0
2 years ago
How would a scientist go about determining if an unknown substance is an element, compound, solution, or heterogeneous mixture?
stepan [7]
<span>each of more than one hundred substances that cannot be chemically inter converted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms. thats part of one</span>
5 0
3 years ago
Help!<br> Is it possible for a child to have genetic material identical to one parent? Explain.
bagirrra123 [75]
No, you may have similar genetic material but not identical. You can have identical genetic material to your brother or sister if they are identical to you but not your parent because your genetic material consists of two people who have no relation to each other genetic material wise.
7 0
3 years ago
Two wheels roll side-by-side without sliding, at the same speed. The radius of wheel 2 is one-half (1/2) the radius of wheel 1.
Lemur [1.5K]

Answer:

w'=(1/2)w

Explanation:

In order to calculate the angular velocity of the second wheel, you use the following formula:

\omega=\frac{v}{r}      (1)

v: speed of the wheel 1 = speed of the wheel 2

r: radius of the wheel 1

For the second wheel you have:

r'=2r

You replace this value of r' in the following equation:

\omega'=\frac{v}{r'}=\frac{v}{2r}=\frac{1}{2}\frac{v}{r}=\frac{1}{2}\omega\\\\\omega'=\frac{1}{2}\omega

The angular velocity of the second wheel is one half of the angular velocity of the first wheel

6 0
3 years ago
A 1056-hertz tuning fork is sounded at the same time a piano note is struck. You hear three beats per second. What is the freque
boyakko [2]

Answer:

E

Explanation:

There is not enough information in the question. A beat is the observed differences between two frequencies.

Hence, 3 beat represents a difference of 3-hertz between the two frequencies. So the frequency of the piano string could be 1056+3 = 1059-hertz or 1056-3= 1053-hertz.

In order to ascertain the actual value i.e if it is an increase or a decrease in frequency observed, we need more information.

4 0
3 years ago
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