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Sonbull [250]
2 years ago
5

IF YOUR GOOD AT SCIENCE THEN PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST

Physics
1 answer:
MakcuM [25]2 years ago
3 0

Answer:

A: Copper is a good conductor

Explanation:

For an electrical current to flow through something, the main power source has to fight against the resistivity. Copper wire has a very low level of resistivity making it an excellent conductor. Basically, copper is super bendy and flexible, electricity.

Fun fact, sinc humans are also super bendy and essentially big sacs of all things wet and watery, we're considered to also be excellent conductors. We also have very intricate circuitry and a lot of natural electricity so basically, we were made for it, especially since the body already used little bits of electricity to function.

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What is the acceleration of a proton moving with a speed of 6.5 m/s at right angles to a magnetic field of 1.8 t ?
defon
The magnetic force acting on the proton is 
F=qvB \sin \theta
where
q is the proton charge
v is its speed
B is the intensity of the magnetic field
\theta is the angle between the direction of v and B; since the proton is moving perpendicular to the magnetic field, \theta=90^{\circ} and \sin \theta=1, so the force becomes
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this force provides the centripetal force that keeps the proton in circular motion:
m \frac{v^2}{r} = q v B
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Re-arranging the previous equation, we can find the radius of the proton's orbit:
r= \frac{mv}{qB}= \frac{(1.67 \cdot 10^{-27} kg)(6.5 m/s)}{(1.6 \cdot 10^{-19} C)(1.8 T)}=3.77 \cdot 10^{-8}m

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a_c =  \frac{v^2}{r}= \frac{(6.5 m/s)^2}{3.77\cdot 10^{-8}m}=1.12 \cdot 10^9 m/s^2

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