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3 years ago

The number of dots near hydrogen and helium are the same as in the energy level chart. Why?

Physics

2 answers:

Kipish [7]3 years ago

8 0

Answer:

Because the electrons they have are valence electrons.

Explanation:

Hope this helps

QveST [7]3 years ago

8 0

The electrons they have are valence electrons

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Isn't it "gravity" this would makes sense because grvaity difines weight

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2 years ago

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PLEASE HELP! Two 3.5 g bullets are fired with speeds of 44.6 m/s and 62.6 m/s, respectively.

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3 years ago

Does energy or matter ever disappear? Explain.

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3 years ago

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ASAP

pochemuha

Answer:

Explanation:

The fish falls from vertical rest in a time of

t = √(2h/g) = √(2(2.27)/9.81) = 0.68 s

v = d/t = 5.6 / 0.68 = 8.2 m/s

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2 years ago

The transverse standing wave on a string fixed at both ends is vibrating at its fundamental frequency of 250 Hz. What would be t

hodyreva [135]

Answer:

Explanation:

fundamental frequency, f = 250 Hz

Let T be the tension in the string and length of the string is l ans m be the mass of the string initially.

the formula for the frequency is given by

$f=\frac{1}{2l}\sqrt{\frac{Tl}{m}}$ .... (1)

Now the length is doubled ans the tension is four times but the mass remains same.

let the frequency is f'

$f'=\frac{1}{2\times 2l}\sqrt{\frac{4T\times 2l}{m}}$ .... (2)

Divide equation (2) by equation (1)

f' = √2 x f

f' = 1.414 x 250

f' = 353.5 Hz

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2 years ago