3 years ago

True or false in order for light to be emitted electrons must move from high energy state to a lower energy state?

Physics

2 answers:

lara31 [8.8K]3 years ago

5 0

Answer:

I think it is false.

It does not move to lower energy state.

victus00 [196]3 years ago

5 0

The answer to your question is true

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If the mass of a planet is 0.231 mE and its radius is 0.528 rE, estimate the gravitational field g at the surface of the planet.

crimeas [40]

Answer:

$8.1 m/s^2$

Explanation:

The strength of the gravitational field at the surface of a planet is given by

$g=\frac{GM}{R^2}$ (1)

where

G is the gravitational constant

M is the mass of the planet

R is the radius of the planet

For the Earth:

$g_E = \frac{GM_E}{R_E^2}=9.8 m/s^2$

For the unknown planet,

$M_X = 0.231 M_E\\R_X = 0.528 R_E$

Substituting into the eq.(1), we find the gravitational acceleration of planet X relative to that of the Earth:

$g_X = \frac{GM_X}{R_X^2}=\frac{G(0.231M_E)}{(0.528R_E)^2}=\frac{0.231}{0.528^2}(\frac{GM_E}{R_E^2})=0.829 g_E$

And substituting g = 9.8 m/s^2,

$g_X = 0.829(9.8)=8.1 m/s^2$

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3 years ago

Which method best helps to prevent wind erosion?

docker41 [41]

Answer:

A. rotating crops

Explanation:

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3 years ago

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True or false. Students with a Learners License may not receive a motorcycle endorsement.

viktelen [127]

This is a true statement

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3 years ago

A bus driver heads south with a steady speed of

Nutka1998 [239]

ANS

{ A }

Magnitude

$5400.097 \: ✓ \: m$

Direction

$25.52 \: ✓ \: ° South \: of \: West$

{ B }

Average speed in ( m/s )

$23.43 \: ✓ \: m/s$

{ C }

Magnitude

$14.06 \: ✓ \: m/s$

Direction

$25.52 \: ✓ \: ° South \: of \: West$

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Bradley drops a rock in a well. It falls for 12 seconds. How deep is the well?

erik [133]

It’s 12 seconds long

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