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3 years ago

The materials that are changed in a chemical reaction are called A. reactants B. coefficients C. products D. none of the above

Physics

2 answers:

elena-14-01-66 [18.8K]3 years ago

6 0

Hello i got you the answer is A) reactants

Dmitry_Shevchenko [17]3 years ago

5 0

The materials that are changed in a chemical reaction are called A. reactants

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Physics is my answer correct?

Digiron [165]

Explanation:

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3 years ago

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If an object exerts a pressure of 16lb/in^2 and it has an area of 2 in^2 squared what is the weight of the object?

lesantik [10]

Answer:32Ib

Explanation:

Pressure=16Ib/in^2

area=2in^2

weight=pressure x area

Weight=16 x 2

Weight=32

Weight=32Ib

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3 years ago

Can someone answer this.

klemol [59]

Take left to be the negative direction, and right to be positive. That means the forces on the squirrel would be -2N and 3N.

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3 years ago

This is the science of extremely small structures and is leading to advanced materials, devices and applications in energy, medi

miv72 [106K]

Answer:

Nanotechnology

Explanation:

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4 years ago

Irina finds an unlabeled box of fine needles, and wants to determine how thick they are. A standard ruler will not do the job, a

Vsevolod [243]

Answer:

$d=\frac{1.22\times 640\times 10^{-9}\times 21.7}{7.35\times 10^{-2}}=2305.21\times 10^{-7}m$

Explanation:

The expression which represent the first diffraction minima by a circular aperture is given by $d sin\Theta =1.22\lambda$ --------eqn 1

The angle through which the first minima is diffracted is given by $tan\Theta =\frac{y_1}{D}$ ---------eqn 2

As $\Theta$ is very small so we can write $sin\Theta =tan\Theta$

So from eqn 1 and eqn 2 we can write

$y_1=\frac{1.22\lambda D}{d}$ --------eqn 3

Here $y_1$ is the position of first maxima D is the distance of screen from the circular aperture d is the diameter of aperture

It is given that diameter of circular aperture is 14.7 cm so $y_1=\frac{14.7}{2}=7.35 \ cm$

Now putting all these value in eqn 3

$d=\frac{1.22\lambda D}{y_1}$

$d=\frac{1.22\times 640\times 10^{-9}\times 21.7}{7.35\times 10^{-2}}=2305.21\times 10^{-7}m$

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3 years ago