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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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Answer:

the rope should break

Explanation:

she with equal amounts of pulling are on each side then the rope should slowly start to tare apart and snap/break.

hope this helps you

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3 years ago
A softball is fouled off with a vertical velocity of 20 m/s and a horizontal velocity of 15 m/s. what is the resultant velocity
raketka [301]
25 m/s is the answer
8 0
3 years ago
Fellow student of mathematical bent tells you that the wave function of a traveling wave on a thin rope is y(x,t)= 2.20 mm cos[(
bezimeni [28]

Answer

given,

y(x,t)= 2.20 mm cos[( 7.02 rad/m )x+( 743 rad/s )t]

length of the rope = 1.33 m

mass of the rope = 3.31 g

comparing the given equation from the general wave equation

y(x,t)= A cos[k x+ω t]

A is amplitude

now on comparing

a) Amplitude  = 2.20 mm

b) frequency =

     f = \dfrac{\omega}{2\pi}

     f = \dfrac{743}{2\pi}

          f = 118.25 Hz

c) wavelength

        k= \dfrac{2\pi}{\lambda}

        \lambda= \dfrac{2\pi}{k}

        \lambda= \dfrac{2\pi}{7.02}

        \lambda= 0.895\ m

d) speed

         v = \dfrac{\omega}{k}

         v = \dfrac{743}{7.02}

                v = 105.84 m/s

e) direction of the motion will be in negative x-direction

f) tension

  T = \dfrac{v^2\ m}{L}

  T = \dfrac{(105.84)^2\times 3.31 \times 10^{-3}}{1.33}

      T = 27.87 N

g) Power transmitted by the wave

  P = \dfrac{1}{2}m\ v \omega^2\ A^2

  P = \dfrac{1}{2}\times 0.00331\times 105.84\times 743^2\ 0.0022^2

      P = 0.438 W

5 0
3 years ago
Which of the following stars is likely to be the coldest? Select one: a. The white-colored star b. The orange-colored star c. Th
worty [1.4K]
The White colored star is likely to be the coldest
6 0
3 years ago
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