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3 years ago

Where does internal radiation come from?

Physics

1 answer:

pantera1 [17]3 years ago

5 0

☁️ Answer ☁️

Internal radiation exposure hazards result from radioactive material that gets inside the body when you breathe it

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

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Why is water considered to be a complex compound?

Anvisha [2.4K]

Answer:

Explanation: The elements cannot be separated by physical means. Water is a compound having two hydrogen atoms and one oxygen atom per molecule.

7 0

3 years ago

A thin ball shell is shaped like a hollow ball with a radius of 42.8 cm. The material is a conductor with charge 0.8 nC A point

Gala2k [10]

Answer:

The Electric field will be 225.92 N/C

Explanation:

Given :

Radius of the hollow sphere R=42.8 cm
Initial charge on the conducting sphere is $Q_1=0.8\times10^{-9}\ \rm C$
Magnitude of the point charge $q_2=-5.4\times10^{-9}\ \rm C$

We know that the flux of the electric field through a close surface cab be calculated by using Gauss Law which is

$\int EdA=\dfrac{Q_{in}}{\epsilon_0}\\\\E\times4\pi\times 0.428^2=\dfrac{(0.8-5.4)\times10^{-9}}{\epsilon_0}\\\\E=225.92\ \rm N/C$

Hence the Electric Field is calculated.

The answer founded out by you seems to be correct and very close to the exact answer and the concept you have used in your answer is also correct.

5 0

3 years ago

a brick is suspended above the ground at a height of 6.6 meters. it has a mass of 5.3 kg. what is the potential energy of the br

Maslowich

The formula for potential energy is mass x height x gravitational force. Your mass is 5.3 kg and your height is 6.6 meters. The gravitational force on earth is 9.8 m/s. That means your answer is 5.3 x 6.6 x 9.8 and that equals 342.804

4 0

3 years ago

Which statement is always true about objects which exert gravitational force on each other? (3 points)

kumpel [21]

Answer:

They have mass is always true.

8 0

3 years ago

A train is travelling towards the station on a straight track. It is a certain distance from the station when the engineer appli

AleksandrR [38]

Answer:

500 m

Explanation:

t = Time taken

u = Initial velocity = 50 m/s

v = Final velocity = 0

s = Displacement

a = Acceleration = -2.5 m/s²

Equation of motion

$v=u+at\\\Rightarrow 0=50-2.5\times t\\\Rightarrow \frac{-50}{-2.5}=t\\\Rightarrow t=20\ s$

Time taken by the train to stop is 20 seconds

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=50\times 20+\frac{1}{2}\times -2.5\times 20^2\\\Rightarrow s=500\ m$

∴ The engineer applied the brakes 500 m from the station

4 0

3 years ago