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Sunny_sXe [5.5K]
4 years ago
9

Patients with brain tumors may elect to have a procedure known as Gamma Knife. In a typical Gamma Knife procedure gamma rays are

directed toward a tumor with contact to surrounding tissues.
Limiting contact between gamma rays and healthy tissue is important because
Physics
2 answers:
Allushta [10]4 years ago
6 0

Thinking not sure but gammer rays are high energy and may cause damage to healthy cells

marysya [2.9K]4 years ago
5 0

Answer: B) gamma rays are high energy and may cause damage to healthy cells.

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A package is dropped from an airplane flying at an altitude of 69.2 m with a velocity of 1.40 x 10^2 km/h. Calculate the horizon
Andrew [12]
69.2 m with a velocity of 1.40* 10^2 km/h.

5 0
3 years ago
A.
lorasvet [3.4K]

Answer:

A) Option 1 is the correct answer.

B) Option 4 is the correct answer.

Explanation:

A) Weight of liquid = 7 N

    Volume of liquid = 1 L = 0.001 m³

    Specific weight =  \frac{7}{0.001}=7000N/m^3

    Density = \frac{7000}{9.81}=713.5kg/m^3

    Specific gravity = \frac{713.5}{1000}=0.7135

    Option 1 is the correct answer.

B) The Stokes(St) is the cgs physical unit for kinematic viscosity, named after George Gabriel Stokes.

We have

             1 St = 10⁻⁴ m²/s

    Option 4 is the correct answer.        

7 0
3 years ago
A proton moves from left to right across the screen at speed v0. Then a uniform magnetic field of strength 0.80 T is directed in
Anton [14]

Answer: The force is  directed upward

Explanation: Considering the Lorentz force, given by:

F= qv×B

using the right hand rule and considering the direction of electron velocity and the magnetic field from the figure, the vectorial product gives a  force vector upwards .

8 0
4 years ago
2. Why was it important to examine both the color and the streak of your minerals? Think about streak and explain why it’s calle
horrorfan [7]
<span>Some minerals might have similar color, but different streaks. Others might have the same streak color, but different colors</span>
3 0
3 years ago
An auto race takes place on a circular track. A car completes one lap in a time of 18.0 s, with an average tangential speed of 4
eduard

Answer:

(A) 0.3488 rad/sec

(B) 124.246 m                

Explanation:

We have given car completes one revolution in 18 sec'

So time period T= 18 sec

Tangential speed v = 43.4 m/sec

(A) Angular velocity is given by \omega =\frac{2\pi }{T}=\frac{2\times 3.14}{18}=0.3488rad/sec

(B) Tangential velocity is given v = 43.4 m /sec

We know that v=\omega r

r=\frac{v}{\omega }=\frac{43.4}{0.3488}=124.426m

4 0
3 years ago
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