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3 years ago

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__________ is/are formed between two air masses that have different temperatures. (4 points) A: Wind B:The jet stream C:Clouds D

:Rain

2 answers:

lidiya [134]3 years ago

8 0

The answer is B: the jet stream.

Westkost [7]3 years ago

5 0

Is/formed between two air masses that ave different temperatures wind

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a fan is rotating clockwise and its acceleration has a positive sign. is the angular velocity of the fan speeding up, slowing do

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Answer:

The angular velocity is slowing down.

Explanation:

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2 years ago

If electrons of energy 12.8 ev are incident on a gas of hydrogen atoms in their ground state, what are the energies of the photo

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3 years ago

When light of wavelength 240 nm falls on a cobalt surface, electrons having a maximum kinetic energy of 0.17 eV are emitted. Fin

dusya [7]

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(a) 5.04 eV (B) 248.14 nm (c) $1.21\times 10^{15}Hz$

Explanation:

We have given Wavelength of the light \lambda = 240 nm

According to plank's rule ,energy of light

$E = h\nu = \frac{hc}{}\lambda$

$E = h\nu = \frac{6.67\times 10^{-34} J.s\times 3\times 10^{8}m/s}{ 240\times 10^{-9} m\times 1.6\times 10^{-19}J/eV}= 5.21 eV$

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$E = KE_{max}+\Phi _{0}$ , here $\Phi _0$ is work function.

$\Phi _{0}=E - KE_{max}$ = 5.21 eV-0.17 eV = 5.04 eV

Part( B) We have to find cutoff wavelength

$\Phi _{0} = \frac{hc}{\lambda_{cuttoff}}$

$\lambda_{cuttoff}= \frac{hc}{\Phi _{0} }$

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3 years ago

Which of the following statements is NOT a correct assumption of the classicalmodel of an ideal gas?A. The molecules are in rand

Elena-2011 [213]

The answer is D, because the collision's between molecules are elastic, not inelastic.

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3 years ago

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lana66690 [7]

Answer:

See the explanation below.

Explanation:

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2 years ago