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3 years ago

What is one way radiation is used that is beneficial for our health?

Physics

1 answer:

xenn [34]3 years ago

3 0

Answer:in X-rays

Explanation:

Radiation are used in X-rays for the treatment of tumours, and some skin diseases,cancer cells can be destroyed by X-rays

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How are scientific theories different than laws or hypotheses?

Gnoma [55]

Answer: Chilling with my homies

Chicken wings, Chicken wings

Hotdog and baloney

Chicken and macaroni

Chillin' wit mah homiiieees

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Chicken chicken chicken chicken wing

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Hotdog and baloney

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Chicken wings, Chicken wings

Hotdog and baloney

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Chicken wings, Chicken wings

Hotdog and baloney

Chicken and macaroni

Chillin' wit mah homiiieees

Chillin' wit mah

Explanation:

im sorry i had to do it now pls give me brainliest thank u and have a blessed day:)

9 0

3 years ago

Read 2 more answers

An α-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. It is accelerated from rest through a potential difference that

zzz [600]

Answer with Explanation:

We are given that

Charge on alpha particle=q=2 e= $2\times 1.6\times 10^{-19} C$

1 e= $1.6\times 10^{-19} C$

Mass of alpha particle=m= $6.64\times 10^{-27} kg$

Potential difference,V= $1.97\times 10^6 V$

Magnetic field,B=3.49 T

a.Speed of alpha particle=v= $\sqrt{\frac{2 qV}{m}}$

By using the formula

$v=\sqrt{\frac{2\times 2\times 1.6\times 10^{-19}\times 1.97\times 10^6}{6.64\times 10^{-27}}$

$v=1.38\times 10^7 m/s$

b.Magnetic force,F $=qvB=2\times 1.6\times 10^{-19}\times 1.38\times 10^7\times 3.49=1.5\times 10^{-11} N$

F= $1.5\times 10^{-11} N$

c.Radius of circular path, r= $\frac{mv^2}{F}$

$r= \frac{6.64\times 10^{-27}\times (1.38\times 10^7)^2}{1.5\times 10^{-11}}$

r=0.084 m

5 0

3 years ago

A 7000-kg plane is launched from an aircraft carrier in 2.0 seconds

ExtremeBDS [4]

The acceleration and velocity of the plane is 78.57 m/s² and 157.14 m/s respectively

To calculate the acceleration of the plane, we use the formula below.

<h3>Formula:</h3>

a = F/m..................... Equation 1

Where:

a = Acceleration of the plane
F = Force applied to the plane
m = mass of the plane.

From the question,

Given:

F = 550000 N
m = 7000 kg

Substitute these values into equation 1

a = 550000/7000
a = 78.57 m/s²

To calculate the velocity, we use the formula below.

v = u+at............. Equation 2

Where:

v = Final velocity
u = initial velocity
a = acceleration
t = time.

From the question,

Given:

u = 0 m/s
a = 78.57 m/s
t = 2.0 seconds

Substitute these values into equation 2

v = 0+2(78.57)

v = 157.14 m/s

Hence, The acceleration and velocity of the plane is 78.57 m/s² and 157.14 m/s respectively.
Learn more about acceleration here: brainly.com/question/460763

5 0

2 years ago

A girl wants to count the steps of a moving escalator which is going up. If she counts 60 steps going up and 90 coming down. How

brilliants [131]

Let

V the speed of the girl per step
v the speed of the escalator per step
L the length between ground and floor in number of steps

V*60+v*60=L => V+v=L/60
V*90-v*90=L => V-v=L/90

By adding the equations V+v=L/60 and V-v=L/90 we get:

2V=L(3+2)/180

V=5L/360

V = L/72

Time to climb (in steps) with v=0 (escalator standing still) is:

V*t=L

t = L/V

t = L/(L/72)

t =72 steps

The girl will count 72 steps.

3 0

3 years ago

Which of these is true for the two poles of a magnet?

mina [271]

The correct answer to this problem would be that like poles repel and unlike poles attract.

N and N poles repel
S and S poles repel
N and S poles attract
S and N poles attract

Answer: D) like poles repel each other. unlike poles attract each other

I hope this helps!

3 0

4 years ago

Read 2 more answers