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Nataly_w [17]
2 years ago
8

Avogadro‘s number was calculated by determining The number of atoms in

Physics
1 answer:
Lady_Fox [76]2 years ago
7 0

Answer:

12 grams of the isotope carbon-12.

Explanation:

hope it helps you and give me a brainliest

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Which of the following sentences shows the correct use of a transition word? Even though I was sick, I went to the doctor. My sh
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Answer:

D. I stayed up late for several nights. Eventually, I was too tired to concentrate.

Explanation:

i got it right edge 2020.

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3 years ago
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A motorcycle moving 18.8 m/s has<br> 57800 J of KE. What is its mass?
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Answer:

m = 327.07 kg

Explanation:

Given that,

Kinetic energy of a motorcycle, E = 57800 J

Velocity of the motorcycle, v = 18.8 m/s

We need to find the mass of the motorcycle. The kinetic energy of an object is given by :

E=\dfrac{1}{2}mv^2

m is mass

m=\dfrac{2E}{v^2}\\\\m=\dfrac{2\times 57800 }{(18.8)^2}\\\\m=327.07\ kg

So, the mass of the motorcycle is 327.07 kg.

8 0
3 years ago
An N-slit system has slit separation d and slit width a. Plane waves with intensity I and wavelength O are incident normally on
Leokris [45]

Answer:

E. d and O

Explanation:

"Light passing through a single slit forms a diffraction pattern somewhat different from those formed by double slits or diffraction gratings".

According to Huygens’s principle, "for each element of the wavefront in the slit emits wavelets. These are like rays that start out in phase and head in all directions. (Each ray is perpendicular to the wavefront of a wavelet.) Assuming the screen is very far away compared with the size of the slit, rays heading toward a common destination are nearly parallel".

The destructive interference for a single slit is given by:

d sin \theta = m\lambda , m=1,-1,2,-2,3,...

Where

d is the slit width

\lambda=O is the light's wavelength

\theta is the angle relative to the original direction of the light

m is the order od the minimum

I represent the intensity

When the intensity and the wavelength are incident normally the angular as we can see on the expression above the angular separation just depends of the distance d and the wavelength O.

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What is a half-life?
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option D is correct

Explanation:

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Why do these two magnets attract each other?
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Answer:

A

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When two magnets are brought near each other, like poles repel; opposite poles attract. We like to represent this force effect of a magnet on iron-like objects with a concept called magnetic field. The concept of field can be best understood if we remember the gravitational force of Earth on object near it.

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