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Minchanka [31]
3 years ago
8

Which terms both represent scalar quantities?

Physics
1 answer:
ELEN [110]3 years ago
3 0
The answer should be B
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For a wavelength of 420 nm, a diffraction grating produces a bright fringe at an angle of 24°. For an unknown wavelength, the sa
Inessa [10]

Answer:

649.8420 nm

Explanation:

We have given \Theta _1=24^{\circ} \ and\ \Theta _2=39^{\circ}

\lambda _1=420\ nm we have to find unknown wavelength that is \lambda _2

The condition for constructive interference is dsin\Theta =n\lambda

Where d is distance between slits \Theta is angle of emergence and n is order of maxima

Using constructive interference equation

dsin\Theta _1=n\lambda _1 ---------eqn 1

dsin\Theta _2=n\lambda _2---------eqn 2

On dividing eqn 1 by eqn 2

\frac{\lambda _1}{\lambda _2}=\frac{sin\Theta _1}{sin\Theta _2}

\frac{420}{\lambda _2}=\frac{sin24^{\circ}}{sin39^{\circ}}

\lambda _2=649.8420\ nm  

7 0
3 years ago
Application - You have two objects that you want to push the same distance (5 meters) across the floor. The objects have differe
Mamont248 [21]

I see you're in Middle School, so I've got a hunch that they want you
to say "the dresser because it has more mass".  But that's a poor
answer, to a poor question.

The fact is that there's no way to tell.

The force it takes to move either object across the floor does NOT really
depend on just its mass.  It depends on both the object's mass AND the
friction between the object and the floor.  And THAT depends on the shape
of the feet where they touch the floor, and what kind of material the feet and
the floor are made of.

So it seems to me that we really don't have enough information to answer
the question with.

But again, I suspect that the answer they want is "the dresser because
it has more mass".

8 0
3 years ago
A slide projector has a magnification of 50. How wide will the projected image be if the slide is 2.8 cm wide?
Artist 52 [7]

Answer:

hi = 12mm or 1.2cm

Explanation:

XOXO

Kit ^w^

7 0
3 years ago
What’s the net force of a box with 60n left and 20n right
natita [175]

Answer and Explanation:

There would be a net force of 40n going left, because 20n going right would cancel out the 20n in the 60n going left, making 40n go left.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

3 0
3 years ago
_____cells do not contain a nucleus
xeze [42]
Prokaryotic cells lack a nucleus.<span> Organisms classified as prokaryotes include bacteria and archaea. </span>
4 0
4 years ago
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