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Masja [62]
3 years ago
9

Based on what you’ve learned from the raisin cake analogy, which two properties of distant galaxies do astronomers have to measu

re to show that we live in an expanding universe?
Physics
1 answer:
Kisachek [45]3 years ago
4 0
Here is the answer to the given question above. Based on the Raisin Cake Analogy, the two properties of distant galaxies that astronomers have to measure to show<span> that we live in an expanding universe are DISTANCE and SPEED. Hope this answers your question. Have a great day!</span>
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Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. Ass
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Answer:

L = 4.711 *10^{-6} kg m2/s

Explanation:

i =\frac{ml^3}{3}

= \frac{0.00*.15^2}{3}

   =4.5*10^-5

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\omega = \frac{2\pi}{60}

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the angular momentum,

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L = 4.5*10^{-5}* 0.1047 rad/s

L = 4.711 *10^{-6} kg m2/s

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Bingel [31]
The horizontal force is m*v²/Lh, where m is the total mass. The vertical force is the total weight (233 + 840)N. 

<span>Fx = [(233 + 840)/g]*v²/7.5 </span>

<span>v = 32.3*2*π*7.5/60 m/s = 25.37 m/s </span>

<span>The horizontal component of force from the cables is Th + Ti*sin40º and the vertical component of force from the cable is Ta*cos40º </span>

<span>Thh horizontal and vertical forces must balance each other. First the vertical components: </span>

<span>233 + 840 = Ti*cos40º </span>

<span>solve for Ti. (This is the answer to the part b) </span>

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<span>[(233 + 840)/g]*v²/7.5 = Th + Ti*sin40º </span>

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<span>using v and Ti computed above.</span>
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