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2 years ago

According to the principle of faunal succession, what must be true of the fossils on a layer below? Now

Physics

2 answers:

IrinaVladis [17]2 years ago

8 0

The answer would be they were older not younger.

Firdavs [7]2 years ago

7 0

It means that they were set earlier therefor they are older.

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What is the formula for amplitude?

Vesna [10]

Explanation:

In periodic motion, amplitude is half the distance between the minimum and the maximum.

A = (max - min) / 2

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3 years ago

One kilogram-meter per second squared is also equal to what unit

yan [13]

Metres/second² is acceleration. maybe a bit more clarification?

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2 years ago

How many values must a 1-D<br> motion problem give you in<br> order to solve it?

MrRa [10]

Answer:

I think it is B: 3

Explanation:

3 0

2 years ago

Can some one help me ;-;

enyata [817]

Answer: The first answer for the first problem, and the 2nd answer for the second problem

Explanation: For the first one, if it is absolute zero, the molecules would not move at all.

For the second one, the temperature of the sample will increase due to the movement.

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2 years ago

A flywheel with a diameter of 1.63 m is rotating at an angular speed of 79.9 rev/min. (a) What is the angular speed of the flywh

Studentka2010 [4]

Answer:

(a) 8.362 rad/sec

(b) 6.815 m/sec

(d) 396.22 revolution

Explanation:

We have given that diameter d = 1.63 m

So radius $r=\frac{d}{2}=\frac{1.63}{2}=0.815m$

Angular speed N = 79.9 rev/min

(a) We know that angular speed in radian per sec

$\omega =\frac{2\pi N}{60}=\frac{2\times 3.14\times 79.9}{60}=8.362rad/sec$

(b) We know that linear speed is given by

$v=r\omega =0.815\times 8.362=6.815m/sec$

And $\omega _i=79.9rev/min$

Time t = 63 sec

Angular acceleration is given by $\alpha =\frac{\omega _f-\omega _i}{t}=\frac{675-79.9}{63}=9.446rad/sec^2$

(d) Change in angle is given by

$\Theta =\frac{1}{2}(\omega _i+\omega _f)t=\frac{1}{2}(675+79.9)\times 1.05=396.22rev$

7 0

2 years ago