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2 years ago

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List what sources of uncertainty go into calculating the wavelength of the laser (no explanation necessary here). (b) Accurately

report the uncertainties for these quantities. (c) Explain which of these contributes the most to the final uncertainty on the laser wavelength

1 answer:

laiz [17]2 years ago

7 0

Answer:

thanks for da 5points hoi

Explanation: thanks dawg

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Which is the only mechanism that can introduce new alleles in a gene pool? genetic drift random mating mutation

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Mutation because they change the genes

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A wall (of thermal conductivity 0.98 W/m Â· â—¦ C) of a building has dimensions of 3.7 m by 15 m. The average inside and outside

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Answer:

Answer:

the amount of energy flowing is 1.008x10⁹J

Explanation:

To calculate how much heat flows, the expression is the following:

Where

K=thermal conductivity=0.81W/m°C

A=area=6.2*12=74.4m²

ΔT=30-8=22°C

L=thickness=8cm=0.08m

t=time=16.9h=60840s

Replacing:

Explanation:

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Assemblage is ________________ a. a technique for casting where wax is carved then heated after a mold is made, then heated so t

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Assemblage is an additive process where artists construct work by putting together objects and attaches them in some way. The correct option among all the options that are given in the question is the second option or option "b". This kind of artistry actually gives a three dimensional impression to the work that is done by the artist.

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3 years ago

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A Ferris wheel on a California pier is 27 m high and rotates once every 32 seconds in the counterclockwise direction. When the w

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A) 140 degrees

First of all, we need to find the angular velocity of the Ferris wheel. We know that its period is

T = 32 s

So the angular velocity is

$\omega=\frac{2\pi}{T}=\frac{2\pi}{32 s}=0.20 rad/s$

Assuming the wheel is moving at constant angular velocity, we can now calculate the angular displacement with respect to the initial position:

$\theta= \omega t$

and substituting t = 75 seconds, we find

$\theta= (0.20 rad/s)(75 s)=15 rad$

In degrees, it is

$15 rad: x = 2\pi rad : 360^{\circ}\\
x=\frac{(15 rad)(360^{\circ})}{2\pi}=860^{\circ} = 140^{\circ}$

So, the new position is 140 degrees from the initial position at the top.

B) 2.7 m/s

The tangential speed, v, of a point at the egde of the wheel is given by

$v=\omega r$

where we have

$\omega=0.20 rad/s$

r = d/2 = (27 m)/2=13.5 m is the radius of the wheel

Substituting into the equation, we find

$v=(0.20 rad/s)(13.5 m)=2.7 m/s$

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When an object is falling and reaches a constant velocity, the net force on the object is ____ and the weight of the object is e

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When an object is falling and reaches a constant velocity, the net force on the object is <em>zero</em> (it's not accelerating), and the weight of the object is equal to <em>the force of air resistance against the object</em>. (choice-D)

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