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3 years ago

Using the vocabulary words we have learned so far in this unit, describe what happens when something warms up.

2 answers:

4 0

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increase. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Lunna [17]3 years ago

4 0

The answer is molecule

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Artemon [7]

Alike because they both act on the quarks making up the nucleons and they have very short ranges. The Strong Nuclear Force is an attractive force between protons and neutrons that keep the nucleus together and the Weak Nuclear Force is responsible for the radioactive decay of certain nuclei. Which also makes them very different

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3 years ago

A scientist is testing the seismometer in his lab and has created an apparatus that mimics the motion of the earthquake felt in

otez555 [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

$a_{max} = 0.00246 \ m/s^2$

$k =722.2 \ N/m$

Explanation:

From the question we are told that

The amplitude is $A = 1.8 \ cm = 0.018 \ m$

The period is $T = 17 \ s$

The test weight is $W = 13 \ N$

Generally the radial acceleration is mathematically represented as

$a = w^2 r$

at maximum angular acceleration

$r = A$

$a_{max} = w^2 A$

Now $w$ is the angular velocity which is mathematically represented as

$w = \frac{2 * \pi }{T}$

Therefore

$a_{max} = [\frac{2 * \pi}{T} ]^2 * A$

substituting values

$a_{max} = [\frac{2 * 3.142}{17} ]^2 * 0.018$

$a_{max} = 0.00246 \ m/s^2$

Generally this test weight is mathematically represented as

$W = k * A$

Where k is the spring constant

Therefore

$k = \frac{W}{A}$

substituting values

$k = \frac{13}{0.018}$

$k =722.2 \ N/m$

7 0

3 years ago

A ticker tape of the motion of a trolley.Time taken for one tick is 0.02 seconds

Harrizon [31]

Answer:Hshshshshja

Explanation:

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3 years ago

A solar prominence is

8_murik_8 [283]

B. a solar storm that moves across the sun's surface

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3 years ago

Read 2 more answers

If a material were being designed to demonstrate no thermal expansions, how would the energy plot look like?

bixtya [17]

The characteristics of thermal expansion allow finding that the response for a material without thermal expansion is

The length variation is zero

In the graph the line is horizontal so there is no change in length with temperature

Thermal expansion is the macroscopic sum of the changes in the length of the bonds when the energy (temperature) changes, it can be written

ΔL = α L₀ ΔT

Where ΔL is the change in length, α the coefficient of linear expansion, L₀ the initial length and ΔT the change in body temperature

In this case, a material is being designed that the thermal expansion is very small, for this the material must be made up of several compounds where some of them present a contraction with temperature, some examples: water at low temperature, liquefied gases , ceramic tile, quartz, etc.

The thermal expansion measurement processes control the body temperature and measure the change in length, in this case the change in length must be zero, in the attachment we can see a graph of a composite material with these characteristics, an example of this type of material is Invar an alloy of nickel and iron α = 3.7 10⁻⁶ ºC⁻¹

In conclusion, using the characteristics of thermal expansion we can find that the response of material without thermal expansion is

The length variation is zero

In the graph the line is horizontal so there is no change in length with temperature

Learn more here: brainly.com/question/18717902

5 0

3 years ago