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Stolb23 [73]
3 years ago
13

Match the author to their work. A Erwin Schrödinger B Albert Einstein C Niels Bohr D Max Plank E Louis de Broglie Developed the

Bohr model of the atom, in which he proposed that energy levels of electrons are discrete Discovery of energy quanta made him the originator of quantum theory Formulated the wave equation; stationary and time-dependent Schrödinger equation Best known to the general public for his "mass–energy equivalence formula" ; E = mc^2 Postulated the wave nature of electrons and suggested that all matter has wave properties
Physics
1 answer:
Klio2033 [76]3 years ago
5 0

Answer:Developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete- Niels Bohr

Discovery of energy quanta made him the originator of quantum theory -Max Plank

Formulated the wave equation; stationary and time-dependent Schrödinger equation- Erwin Schrödinger

Best known to the general public for his "mass–energy equivalence formula" ; E = mc^2-B Albert Einstein

Postulated the wave nature of electrons and suggested that all matter has wave properties- Louis de Broglie

Explanation:

All the names mentioned above contributed towards the development of the wave mechanical model of the atom. Their names were matched with their contributions as required by the question.

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The temperature of water in a beaker is 45°C. What does this measurement represent?
Tasya [4]

Answer:

the average kinetic energy of water particles - C.

8 0
3 years ago
Gel electrophoresis is a technique used to separate nucleic acids by their _______.
ss7ja [257]
<h2>Answer: size</h2>

Gel electrophoresis is called to the  technique used by scientists for analytical purposes, in life sciences laboratories to separate macromolecules (DNA, RNA, and proteins from various sources).

The process consists of separating the molecules according to their <u>size</u> and <u>electric charge</u>. This is done with a gel (a gelatinous substance extracted from seaweed, called <em>agarose</em>) of controllable porosity placed in an ionic buffer environment. This is how the gel acts as a molecular sieve that separates larger molecules from the smaller ones, because each molecule has different size and charge and will move through the gel at different speeds.

That is, the smaller molecules move more quickly through the gel while the larger ones are left behind.

6 0
3 years ago
If f(x) = -x2+x-1 then value of f(f(2)) is
qaws [65]

Answer:

<u>-13</u>

Explanation:

<u>Function</u>

  • f(x) = -x² + x - 1

<u>Solving</u>

  • Substitute 2 in place of x
  • f(2) = -(2)² + 2 - 1
  • f(2) = -4 + 2 - 1
  • f(2) = -3
  • f(f(2)) = f(-3)
  • f(-3) = -(-3)² - 3 - 1
  • f(-3) = -9 - 3 - 1
  • f(f(2)) = <u>-13</u>
6 0
2 years ago
Gravity is a force of action that acts _______.
8090 [49]
I believe the answer is D.
8 0
4 years ago
Read 2 more answers
Young's experiment is performed with light of wavelength 502nm from excited helium atoms. Fringes are measured carefully on a sc
alexandr402 [8]

Answer:

d = 1.30 mm

Explanation:

given,

wavelength of the light source (λ)= 502 nm

slits is separated (d) = ?

distance to form interference pattern(D) = 1.35 m  

20 th fringe

y = 10.4 mm = 0.0104 m

now,separation between to slits

 d = \dfrac{m\lambda\ D}{y}

where y is the fringe width

 d = \dfrac{20 \times 502\times 10^{-9}\ \times 1.35}{0.0104}

 d = \dfrac{13354\times 10^{-9}}{0.0104}

      d = 1.30 mm

separation between to slits is equal to d = 1.30 mm

8 0
3 years ago
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