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3 years ago

NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!

Physics

1 answer:

kodGreya [7K]3 years ago

3 0

Answer:

1.A

2 .B

3 A

Explanation:

1.A eccentric excercises works the arms

2.B- if a condition runs in her family there are possibilities that she'll get it because it runs in the genes of her family

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A student was trying to find the relationship between mass and force. He placed four different masses on a table and pulled them

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Answer:

B. There is a direct proportion between the mass and force listed in the table.

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From the table, the values of force increases with increase in the value of mass.

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3 years ago

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A very long solid insulating cylinder has radius R = 0.1 m and uniform charge density rho0= 10-3 C/m3. Find the electric field a

Galina-37 [17]

Answer:

$E = (0.56 \times 10^8 ) r \ \ N/c$

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Given that:

$\rho_o = (10^{-3} ) \ c/m^3$

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To find the electric field for r < R by using Gauss Law

${\oint}E^{\to}* da^{\to} = \dfrac{Q_{enclosed}}{\varepsilon_o} --- (1)$

For r < R

$Q_{enclosed}=(\rho) ( \pi r^2 ) l$

$E*(2 \pi rl)= \dfrac{\rho ( \pi r ^2 l)}{\varepsilon_o}$

$E= \dfrac{\rho ( r)}{2 \varepsilon_o}$

where;

$\varepsilon_o = 8.85 \times 10^{-12}$

$E= \dfrac{10^{-3} ( r)}{2 (8.85 \times 10^{-12})}$

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3 years ago