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Tcecarenko [31]

3 years ago

11

Can you hear it? In the cartoon space rocket, why do you think you would not be able to hear the whoosh of the rocket engine in

space?

1 answer:

Brums [2.3K]3 years ago

7 0

Answer:

Because space is a void with no air flow

Explanation:

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A record player turntable initially rotating at 3313 rev/min is braked to a stop at a constant rotational acceleration. The turn

Rus_ich [418]

Answer:

(A) It will take 22 sec to come in rest

(b) Work done for coming in rest will be 0.2131 J

Explanation:

We have given the player turntable initially rotating at speed of $33\frac{1}{3}rpm=33.333rpm=\frac{2\times 3.14\times 33.333}{60}=3.49rad/sec$

Now speed is reduced by 75 %

So final speed $\frac{3.49\times 75}{100}=2.6175rad/sec$

Time t = 5.5 sec

From first equation of motion we know that '

$\alpha =\frac{\omega -\omega _0}{t}=\frac{2.6175-3.49}{4}=-0.158rad/sec^2$

(a) Now final velocity $\omega =0rad/sec$

So time t to come in rest $t=\frac{0-3.49}{-0.158}=22sec$

(b) The work done in coming rest is given by

$\frac{1}{2}I\left ( \omega ^2-\omega _0^2 \right )=\frac{1}{2}\times 0.035\times (0^2-3.49^2)=0.2131J$

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Convert 141.2 kg to lbs and show all units and work

zavuch27 [327]

Your answer is 311.29271 lbs

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In which of the following does personality psychology specialize?

ValentinkaMS [17]

B, Studying how ones' character changes over time... That's the only one that has to deal with personality.

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Roman55 [17]

Answer: 0.185

Explanation:

Trust bro

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Is Switching drugs to OTC status generally increases costs for insured patients true or false

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I am pretty sure this is false.

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