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3 years ago

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells?

Physics

2 answers:

diamong [38]3 years ago

8 0

Gamma rays............

snow_tiger [21]3 years ago

6 0

Answer:

gamma rays

Explanation:

gamma rays

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Change of motion are caused by

AlexFokin [52]

<span>The only thing that can change the motion of an object is a net (unbalanced)</span>force acting on it. This is given by Newton's First Law of Motion, sometimes <span>also called the Law of Inertia.

I hope this helps!</span>

4 0

4 years ago

horizontal force pushes block up a 20.0 incline with an initial speed 12.0 m//s. a) how high up the plane does slide before comi

Annette [7]

Answer:

Explanation:

We shall apply conservation of mechanical energy .

initial kinetic energy = 1/2 m v²

= .5 x m x 12 x 12

= 72 m

This energy will be spent to store potential energy . if h be the height attained

potential energy = mgh , h is vertical height attined by block

= mg l sin20 where l is length up the inclined plane

for conservation of mechanical energy

initial kinetic energy = potential energy

72 m = mg l sin20

l = 72 / g sin20

= 21.5 m

deceleration on inclined plane = g sin20

= 3.35 m /s²

v = u - at

t = v - u / a

= (12 - 0) / 3.35

= 3.58 s

it will take the same time to come back . total time taken to reach original point = 2 x 3.58

= 7.16 s

7 0

3 years ago

An auto race takes place on a circular track. A car completes one lap in a time of 25.0 s, with an average tangential speed of 5

ludmilkaskok [199]

Answer:

(a) Angular speed will be 0.2512 rad/sec

(b) Radius will be 213.375 m

Explanation:

We have given time to complete 1 lap = 25 sec

We know that 1 lap = $2\pi$ radian

(a) So angular speed $=\frac{2\pi }{25}=\frac{2\times 3.14}{25}=0.2512rad/sec$

(B) Tangential velocity is given as v = 53.6 m/sec

We know that tangential velocity is given by

$v=\omega r$

So radius $r=\frac{v}{\omega }=\frac{53.6}{0.2512}=213.375m$

4 0

4 years ago

The rectangular plates in a parallel-plate capacitor are 0.063 m × 5.4 m. A distance of 3.5 × 10–5 m separates the plates. The p

djverab [1.8K]

Answer:

capacitance of the capacitor = 0.18 μ F

Explanation:

Area of the plate A = 0.063 m x 5.4 m = 0.3402 m²

distance between the plate d = 3.5 × 10–5 m

dielectric value for Teflon K = 2.1

capacitance of capacitor = ?

Formula for capacitance of parallel plate is as follows ,

$C= \frac{K\epsilon_0 A}{d}$ (Where $\epsilon_0 = 8.82 \times 10^-12\ \frac{F}{m}$ )

putting the values in the equation,

C = $\frac{2.1\times8.82\times10^-12\times0.3402 }{3.5\times10^-5}$ $=0.18\times 10^-6$ =0.18 μ F

4 0

3 years ago

A light meterstick is loaded with masses of5.0 kg and 3.0 kg

fredd [130]

Answer: $I=3.024\ kg-m^2$

Explanation:

Given

mass of first $m_1=5 kg$

mass of second $m_2=3 kg$

Distance of $m_1$ from origin $r_1=36 cm$

Distance of $m_2$ from origin $r_2=89 cm$

Moment of inertia is given by multiplication of mass and square of distance

$I=\sum mr^2$

$I=m_1r_1^2+m_2r_2^2$

$I=5\times 0.36^2+3\times 0.89^2$

$I=0.648+2.376$

$I=3.024\ kg-m^2$

3 0

3 years ago

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