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S_A_V [24]
3 years ago
15

What do the group numbers mean on the periodic table?

Physics
1 answer:
Ad libitum [116K]3 years ago
8 0

Many periodic tables list numbers for element groups, which are columns of the periodic table. The elements in a group share the same number of valence electrons.

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A graph is provided below. The graph shows the speed of a car traveling
Elis [28]

Answer:

Accelerating

Explanation:

5 0
3 years ago
The part of an atom that is mostly empty space is the
Ghella [55]
<h3><u>Answer;</u></h3>

Electron cloud

<h3><u>Explanation;</u></h3>
  • <em><u>An atom is the smallest particle of an element that can take part in a chemical reaction. Atom is made up of two parts ; that is the nucleus and the electron cloud. The nucleus contain subatomic particles; protons and neutrons, while the electron cloud contains the electrons.</u></em>
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5 0
3 years ago
Read 2 more answers
A horse pulls on a wagon. The reaction force is the wagon pulls on the horse.<br><br> true or false?
Katen [24]

Answer:

True

Explanation:

the horse pull on the wagon but friction and the wight + gravity make the wagon pull on the horse ( newton's 2ed law)

6 0
2 years ago
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Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the speed of sound is 349 m/s,
SSSSS [86.1K]

Answer:

Time period between the successive beats will be 0.1703 sec

Explanation:

We have given speed of the sound v = 349 m/sec

Wavelength of piano A\lambda _A=0.766m

Wavelength of piano  B\lambda _B=0.776m

So frequency of piano A f_1=\frac{v}{\lambda _1}=\frac{349}{0.766}=455.61Hz

Frequency of piano B f_2=\frac{v}{\lambda _1}=\frac{349}{0.776}=449.74Hz

So beat frequency f = 455.61 - 449.74 = 5.87 Hz

So time period T=\frac{1}{f}=\frac{1}{5.87}=0.1703sec

So time period between the successive beats will be 0.1703 sec

4 0
3 years ago
How did you know if an electric current is<br> flowing in a lightbulb?
sweet [91]

Answer:

if it lights up

Explanation:

electricity

7 0
3 years ago
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