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Ilia_Sergeevich [38]
3 years ago
8

Research is being done on the use of radio waves in destroying cancer cells. What type of frequency would be best used in this t

echnology? Justify your answer.
Physics
2 answers:
Dima020 [189]3 years ago
5 0
This is a <span>John Kanzius Research. </span>Radiofrequency Ablation (RFA) which is a type of Electrical Energy is used to treat cancer. It u<span>ses heat made by </span>radio waves<span> to kill </span>cancer<span> cells. Ablation means destroying completely. The method is putting RFA  a probe (electrode) that goes through the skin into the tumour. A</span> CT scan is needed so to check that the probe is in exactly the right place. An electrode in the probe creates radiofrequency energy to produce heat and kill the cancer cells. 
IRISSAK [1]3 years ago
5 0

Destroying cancer cells requires a lot of energy.

High-frequency waves have high energy.

--

The destruction of cancer cells requires a lot of energy, so high-frequency radio waves can be used in this technology because they have high energy.

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Two uniformly charged conducting plates are parallel to each other. They each have area A. Plate #1 has a positive charge Q whil
Marrrta [24]

Answer:5

Explanation:

Given

First Plate has a charge of +Q  and area A

Second Plate has a charge of -3 Q and area A

We Know electric Field due to sheet charge is given by

E=\frac{Q}{2A\epsilon }

Where Q=charge over the Plate

A=Area of plate

\epsilon= Permittivity of free space

Electric Field Due to Positive charge will always be away from it while for negative charge it is towards it.

Net Electric Field at a point between between the Plates is the superimposition of two electric with direction

E_{net}=\frac{Q}{2A\epsilon }+\frac{3Q}{2A\epsilon }

E_{net}=\frac{2Q}{A\epsilon }

Net electric Field is towards the negative charged plate

5 0
4 years ago
One problem caused by technology is that of pollution true or false
HACTEHA [7]

Answer:

True, because tech is what creates thing like cars and other veicals (i know i spelled it wrong)

hope this helps

Explanation:

5 0
3 years ago
Read 2 more answers
A race car travels on a circular track at an average rate of 125 mi/h. The radius of the track is 0.320 miles. What is the centr
GREYUIT [131]
The centripetal acceleration of the car is 48,800 mi/h2
4 0
4 years ago
Charge flows from low potential to high potential.<br> O True<br> or<br> O False
inn [45]

Answer:

False

Explanation:

Think of the electric potential in terms of potential energy. If you imagine a place with high elevation (A) and another one at sea level (B), a ball will roll from high potential to low potential (A-->B).

Everything in our universe wants to reach a lower state of energy if no external force is acted upon it. Every object tends to slow down (friction), a radioactive element dissipates energy (an unstable element releases energy to get to a stable state), water in the clouds comes down to the ground (rain experiencing difference in potential energy).

Electric potential is exactly the same, you just can't see it! It flows from higher voltage (which is a synonym for electric potential) to lower voltage.

8 0
3 years ago
2
Marrrta [24]

Answer:

Weight = 9800Newton

Explanation:

Given the following data;

Mass of car = 1000kg

Acceleration due to gravity = 9.8m/s²

To find the weight of the car;

Weight is given by the formula;

Weight = mass * acceleration due to gravity

Substituting into the equation, we have;

Weight = 1000*9.8

Weight = 9800Newton

7 0
3 years ago
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