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lana66690 [7]
2 years ago
10

Which of the following statements is true regarding the constructive interference diagram shown below? Select all that apply.

Physics
2 answers:
Shkiper50 [21]2 years ago
8 0
The answer is d because u can see they are over lapping
yulyashka [42]2 years ago
6 0

Answer:

I believe its B and C

Explanation:

<u><em>If I'm wrong please tell me so I can correct my answer.</em></u>

<u><em /></u>

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The mass number of a nucleus (except Hydrogen) is:
netineya [11]
The mass number of a nucleus (except Hydrogen) is: number of protons + number of neutrons.

A=Z+N

A=mass number=protons + neutrons.
Z=atomic number=number of protons.
N=number of neutrons. 

In the case of Hydrogen it depends of isotope of Hydrogen . 
the hydrogen has three isotopes, 
protium : A=Z, because N=0
deuterium:  A=Z+N;   N=1
 tritium: A=Z+N;    N=2 
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3 years ago
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What can you predict about an element from its position in the periodic table
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Based on its position in the periodic table, you can predict how many electrons it has, how many valence electrons, how many levels of electrons, and its atomic number and mass.
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3 years ago
Explain how gamma rays are produced by energy
sashaice [31]
Gamma rays<span> are </span>produced<span> in the disintegration of radioactive atomic nuclei and in the decay of certain subatomic particles. When an unstable atomic nucleus decays into a more stable nucleus, the “daughter” nucleus is sometimes </span>produced<span> in an excited state.</span>
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3 years ago
A ball is dropped off the side of a bridge.<br> After 1.55 s, how far has it fallen?
KengaRu [80]

Answer:11.7 meters

Explanation: Gravitational acceleration (g)

9.8 m/s²

Initial velocity (v₀)

0 ft/s

Height (h)

11.77225 m

Time of fall (t)

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Velocity (v)

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6 0
3 years ago
(a) What is the escape speed on a spherical asteroid whose radius is 545 km and whose gravitational acceleration at the surface
Keith_Richards [23]

Answer:

1777.92 m/s

Explanation:

R = Radius of asteroid = 545 km

M = Mass of planet

g = Acceleration due to gravity = 2.9 m/s²

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

Acceleration due to gravity is given by

g=\dfrac{GM}{R^2}\\\Rightarrow M=\dfrac{gR^2}{G}

The expression of escape velocity is given by

v=\sqrt{\dfrac{2GM}{R}}\\\Rightarrow v=\sqrt{\dfrac{2G}{R}\dfrac{gR^2}{G}}\\\Rightarrow v=\sqrt{2gR}\\\Rightarrow v=\sqrt{2\times 2.9\times 545000}\\\Rightarrow v=1777.92\ m/s

The escape speed is 1777.92 m/s

3 0
3 years ago
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