2 years ago

Thermal expansion happens when

2 answers:

6 0

Answer:

The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. ... In general, substances expand or contract when their temperature changes, with expansion or contraction occurring in all directions.

Nesterboy [21]2 years ago

4 0

Answer:

the size of an object changes with a change in temperature.

Explanation:

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What is the wavelength, in nm, of radiation which has an energy if 3.371 x 10^-19 joules per photon?

mr_godi [17]

Answer:

The correct option is:

D) 589.3 nm

Explanation:

Energy of one photon = $3.371\times10^{-19}J$

$Energy=\frac{hc}{\lambda}\\\\h=Planck's\:constant=6.626\times10^{-34}J/s\\c=speed\:of\:light=3\times10^{8}m/s\\\lambda=wavelength\:of\:radiation\\\\\lambda=\frac{hc}{Energy}=\frac{6.626\times10^{-34}\times3\times10^{8}}{3.371\times10^{-19}}=5.897\times10^{-7}m=589.7nm\\$

Hence, the wavelength (in nm) of radiation is 589.7nm (approximately equal to 589.3nm)

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3 years ago

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spayn [35]

Answer:

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Explanation:

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3 years ago

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Marizza181 [45]

Answer:

B. begin with a hypothesis

Explanation:

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3 years ago

Consider a closed containing a solid in equilibrium with its vapor. The volume of the solid is much less than that of the contai

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3 years ago

If you had excess chlorine, how many moles of of aluminum chloride could be produced from 19.0 g of aluminum?

SIZIF [17.4K]

The chemical reaction would be written as follows:

2Al + 3Cl2 = 2AlCl3

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3 years ago

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