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MrRa [10]
3 years ago
9

A proton is released in a uniform electric field, and it experiences an electric force of 5 X 10^-10 N toward the South. What is

the electric field the proton experiences?
Physics
1 answer:
Ymorist [56]3 years ago
4 0

Answer:

Electric field on proton

E=3.12\times 10^9\ N/C

Explanation:

Given that

Force,F=5\times 10^{-10}\ N

We know that

Charge on proton

q=1.6\times 10^{-19}\ C

We know that

Force = Electric field x Charge

F= E x q

E=\dfrac{F}{q}\ N/C

E=\dfrac{5\times 10^{-10}}{1.6\times 10^{-19}}\ N/C

E=3.12\times 10^9\ N/C

Electric field on proton

E=3.12\times 10^9\ N/C

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Which one of the following energy conversion devices has the lowest energy efficiency?
Anna35 [415]

Answer:

A) incandescent ligth bulb, its efficiency is about 10%

Explanation:

The incandescent bulb, that is, the well-known focus with its warm light, was one of the most useful inventions of the 19th century although its use is currently considered very inefficient. These lamps waste between 80 and 90 percent of the total electricity they consume by turning it into heat. The metal filament thus heated and which is the central part of the bulb, only converts the remaining energy into light. Its service life ranges from 750 to 1,000 hours.

This is why they are used in ovens for food preparation, because of the large amount of heat they generate.

The steam boiler in a power plant depends on the fuel that it is using, but a coal-fired power plant with modern technology its efficiency is about 40%

Electric motor are around 85-92%

In order to better understand the concept of efficiency it is as if we pay 100 dollars of gasoline for our weekly use, but of that 100 dollars the car only uses 10 dollars to do that activity the rest of the money the 90 dollars were lost because of the inefficiencies of the vehicle.

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3 years ago
Scientists believe Earth is about how many billion years old
ehidna [41]
The earth is 4.54 billion years old.
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Define mass defect and binding energy​
natima [27]

Answer:

About Transcript. Nuclear binding energy is the energy required to split an atom's nucleus into protons and neutrons. Mass defect is the difference between the predicted mass and the actual mass of an atom's nucleus. The binding energy of a system can appear as extra mass, which accounts for this difference.

Explanation:

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3 years ago
What did ancient astronomers think areas of the moon called mares might be?
Bumek [7]

The ancient astronomers think areas of the moon called mares might be Seas.

Option D  

<u>Explanation</u>:

The surface area of Earth's moon is dark, large, and is basaltic plains which are formed by ancient volcanic eruptions. They were dubbed as Maria, "ancient astronomers" who misunderstood them as actual seas. They are less reflective than highlands. Due to their iron-rich composition, they tend to appear dark from the naked eye. The Maria cover approximately about 16% of surface mostly on side that is visible from Earth. The few Maria on side that is too far are much smaller and residing mostly in very large craters. The ancient astronomers mistook the surface area as look like actual seas.

4 0
3 years ago
In addition to producing images, ultrasound can be used to heat tissues of the body for therapeutic purposes. An emitter is plac
Dafna11 [192]

Answer:

The answer is Yes, the standing wave length with 5 anti-nodes  will be created

Explanation:

To answer this question, we recall the frequencies of standing wave modes in a closed - closed tube of length (L).

The formula will now be:

                    Fₙ =  n ( v/2L)

Where n = n is equal to the number of anti-nodes

and

lambda = 2L/n for standing waves in a closed tube where n is equal to the number of nodes

Now assuming the nodes are :

Where n = 1, 2, 3, 4, 5, ............

Now, we try to make "n" the subject of formula

Fₙ =  n ( v/2L)

So therefore, the number of nodes produced will be

n = 2L Fₙ / v

2 x 0.55 x  10⁻² x 0.7 x 10⁶  / 1540

Calculating the above further, we arrive at = 5.

Now to answer the question,

The answer is Yes, the standing wave length with 5 anti-nodes  will be created

7 0
3 years ago
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