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AlladinOne [14]
2 years ago
10

Plzzzzzzz help me 15 pt for 1st 10 for 2nd

Physics
2 answers:
maks197457 [2]2 years ago
8 0
Mass is the right answer
AnnyKZ [126]2 years ago
5 0
Yeah mass is the right answer
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Plz help i beg, veryyy confused :)
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Displacement is distance in one particular direction. Distance is the route taken without worrying about the direction.
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What is the name of a variable that you change in an experiment
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Independent variable
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As thermal energy is added to a sample of water, the kinetic energy of its
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B

Explanation:

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2 years ago
Three point charges are placed at distances of d , 2 d , and 3 d from a point P. The particle that is 2 d away from P has a char
mel-nik [20]

Answer:

at d the charge will be 3q and at 3d it will be 9q

Explanation:

for V=Vp-V2d

V=KQ/d=K*6q/2d=3kq/d for potential to 2d at 6q be zero the Vp will equal 3kq/d; hence at d, Q=3q and at 3d, Q=9q

7 0
3 years ago
In the visible spectra of stars, absorption lines of hydrogen are produced when atoms are excited from n = 2 to higher levels (t
grigory [225]

Answer:

3. relatively high temperature, about 10,000 K, so that significant numbers of electrons are excited from the ground state, n = 1, to the first excited state, n = 2, but not too many of them have been ejected completely from the atoms

Explanation:

If hydrogen absorption lines are very strong in the visible spectrum of a particular star that means the population of electron in n = 2 is very high so on being exited they absorb radiation in Balmer series and give rise to absorption spectrum. The average temperature required to excite electron in hydrogen atom from n=1 to n = 2   is 10000K .

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3 years ago
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