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3 years ago

What techniques allow us to identify the presence of different elements?

2 answers:

7 0

If unknown compound is crystalline solid,X-ray diffraction technique is best for elucidating the structure. In case the compound is liquid, use of combind IR, UV, Mass and NMR techniques are sufficient in solving the structure.

boyakko [2]3 years ago

4 0

Answer:

Explanation:

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Differences in ocean-surface height can be measured by _____.\

bonufazy [111]

<h3><u>Answer;</u></h3>

Satellite

Differences in ocean-surface height can be measured by<u> Satellite</u>

<h3><u>Explanation;</u></h3>

The topography of the ocean or the height of the ocean surface relative to a level of no motion provides the information on tides, and the distribution of heat and mass in the Earths's oceans.
<em><u>The ocean topography is measured using satellites altimeter. Satellites use radar altimeters that are specially made to measure the height of the ocean surface. The satellites measure the height of the ocean surface with an accuracy of 3 cm relative to the center of the earth.</u></em>
Satellite altimeter combines precise orbit determination with accurate ranging by a microwave altimeter of ocean distance to the satellite.

3 0

3 years ago

Read 2 more answers

The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0. 10. The mass of the object

lilavasa [31]

The force of friction is 78.4 N

What is force of friction?

Frictional force is the force created when two surfaces come into contact and slide against each other. it is given by the equation:

$F_{f} =$ μ * $F_{n}$

where,

$F_{f}$ = force of friction

μ = coefficient of friction

$F_{n}$ = normal force

Given,

μ $= 0.10, m = 8.0 kg$

We know,

$F_{n} = mg$

$F_{n} = 8.0 * 9.8\\\\ F_{n} = 78.4 N$

Subsituing the values in equation:

$F_{f} =$ μ * $F_{n}$

$F_{f} = 0.10 * 78.4 \\\\F_{f} = 7.84 N$

The force of friction is 78.4 N.

To know more about force of friction, check out:

brainly.com/question/24386803

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4 0

1 year ago

Please help im stuck!

Anettt [7]

Surface Tension. Molecules on the surface experience cohesion, this means molecules that are the same material stick together.

5 0

3 years ago

Read 2 more answers

A small block is attached to a spring with a spring constant of 85 N/m. When the spring is compressed 0.30 meters and the releas

Pachacha [2.7K]

Answer:

Explanation:

These Hooke's Law problems are tricky. Here's what we need to know that clears up the problem entirely. The final and also the max speed of the block will be reached at the point where the potential energy of the system is 0. So the equation we need, namely,

$KE+PE=\frac{1}{2}kA^2$ can be simplified down to

$KE=\frac{1}{2}kA^2$ and we solve this first for KE:

$KE=\frac{1}{2}(85)(.30)^2$ and, paying NO attention whatsoever to significant digits here (because if you did the answer you get is not one of the choices)