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N76 [4]
3 years ago
9

The potential difference between two parallel plates is 227 V. If the plates are 6.8 mm apart, what is the electric field betwee

n them? O S.0x10 N/C O 28 x 10* N/C O 4.1 x 10 N/C O 3.3 x 10 N/C
Physics
1 answer:
nalin [4]3 years ago
3 0

Answer:

E=3.3\times 10^4N/C

Option D is the correct answer.

Explanation:

Electric field, E is the ratio of potential difference and distance between them.

Potential difference, V = 227 V

Distance between plates = 6.8 mm = 0.0068 m

Substituting,

         E=\frac{V}{d}=\frac{227}{0.0068}=3.3\times 10^4N/C

Option D is the correct answer.

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You are standing on a footbridge that is 12 feet above a lake. You look down and see a duck in the water. The duck is 7 feet awa
kolbaska11 [484]

Answer:

  30.22°.          

Explanation:

Given that

height of the bridge ,h= 12 ft

The distance of the lake from bridge ,L= 7 m

 Lets take angle = θ

Now by using diagram

We can say that

tan\theta =\dfrac{L}{h}

tan\theta =\dfrac{7}{12}

tan\theta=0.583

\theta=30.22^{\circ}

That is why the angle will be 30.22°.

6 0
3 years ago
This food chain is incomplete. Two groups of organisms are missing. One group of organisms that is missing are the producers, pl
Katena32 [7]

Answer:

Decomposers that recycle matter back into the food chain.

Explanation:

All dead organisms are food for decomposers. Decomposers that recycle matter back into the food chain.

5 0
4 years ago
This graphic shows a scene from a trapeze act. Write 3 – 4 complete sentences to describe the physics pictured in this scene. Us
maw [93]

Questions in this category that include the words "This graphic shows..."
or some such, frequently fail to include any graphic.  When no graphic is
included, it must follow as the night follows the day that no physics is pictured
in the scene. Inertia is a very popular subject, often appearing in scenes
where physics is pictured.  Sadly, however, in an environment that is totally
devoid of graphics, projectiles and the inertia they carry are seldom to be found. 


8 0
3 years ago
Which of the following describes a referee's job?
Serhud [2]

Answer:

C. Supervising the game to make sure teams are playing fairly

5 0
4 years ago
Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium
Mazyrski [523]

Answer:

4\times 10^{12}

Explanation:

Given that, the mass of an average cell is 10 times the mass of a bacterium.

And we know that the mass of the bacterium is,

m_{B} =10^{-15}kg

Now, the mass of an average cell can be calculate by the mass of bacterium,

m_{c}=10\times m_{B}\\m_{c}=10\times 10^{-15}kg\\m_{c}=10^{-14}kg

And the average mass of the humming bird is,

m_{H} =4\times 10^{-2}kg

And also we know that,

The no cell is defined as the ratio of mass of an object to the mass of the average cell.

Mathematically,

N=\frac{m_{H}}{m_{c}}

Therefore,

N=\frac{4\times 10^{-2}kg}{10^{-14}kg}\\ N=4\times 10^{12}

Therefore, the number of cell in the humming bird is 4\times 10^{12}

4 0
3 years ago
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