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Kay [80]
3 years ago
10

Which statement about electrons and atomic orbitals is not true?

Physics
2 answers:
Lubov Fominskaja [6]3 years ago
5 0

An electron cloud represents all the orbitals in an atom.

joja [24]3 years ago
3 0

Answer:

An electron cloud represents all the orbitals in an atom.

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Which explanation BEST supports Newton's second law of motion which states that force = mass x acceleration?
GaryK [48]
The answer is C. F=ma basically says that force is a function of mass multiplied by acceleration. The first two answers don’t make sense because there’s no necessary relationship between mass and acceleration. And for the last two, the higher the mass, the higher the force needed, therefore C is the correct answer.
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Einstein explained the photoelectric effect by proposing that light is transmitted, not in the form of continuous waves, but in
Artist 52 [7]

Answer:

Photons.

Explanation:

Einstein explained the photoelectric effect by proposing that light is transmitted, not in the form of continuous waves, but in the form of many tiny, discrete packets of energy called photons. Photons are massless and  chargeless particle. The energy of a photon is given by :

E=hf

f is the frequency of photon.                                                                  

5 0
3 years ago
The state of matter that has low thermal expansion​
leonid [27]

Answer:

Matter

Explanation:

Because it is solid

6 0
3 years ago
Read 2 more answers
A steam power plant with a power output of 200 MW consumes coal at a rate of 700 tons/h. If the heating value of the coal is 40,
RUDIKE [14]

Answer:

η = 2.57%

Explanation:

Given:

Output power of the steam power plant, P(out) = 200 MW

Consumption of coal, m = 700 tons/h = (700 × 10³)/3600 kg/s= 194.44 kg/s

Heating capacity of the coal, Cv = 40000 kJ/kg

now,

Input power,  P(in) = mCv

or

P(in) =  194.44 kg/s × 40000 = 7777.77 MW

thus,

efficiency, η = P(out)/P(in) = (200 MW) / (7777.77 MW) = 0.02571

or

η = 2.57%

3 0
3 years ago
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