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lesya692 [45]
3 years ago
8

In which case would electrical potential energy be built up and stored in the electric field? a) A positive charge is moved towa

rd a negative charge. b) A positive charge is moved toward a positive charge. c) A negative charge is moved away from a negative charge. d) none of the above
Physics
1 answer:
mr_godi [17]3 years ago
5 0

Answer:

The correct option is B

Explanation:

Although, it is common knowledge that in an electric field, unlike charges attract and like charges repel. However, to build up an electric potential, a positive charge is brought close to another positive charge - this causes work done to be changed to electric potential energy and stored in the electric field.

It should however be noted that when a negative charge is moved away from a positive charge, the negative charge gains electric potential energy.

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Answer:

\theta=15.52^{\circ}

Explanation:

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F=|q||vB|sin(\theta) (1)

where:

q is the proton charge (q=1.6*10^{-19} C)

v is the proton velocity (v=5*10^{5} m/s)

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Now, we just need to solve the equaton (1) for \theta.

\theta=sin^{-1}\left(\frac{F}{qvB}\right)

But the force F = ma, then:

m is the mass of proton  (m=1.67*10^{-27} kg)

a is the acceleration (a=1.5*10^{13} m/s^{2})

\theta=sin^{-1}\left(\frac{m_{p}a}{q_{p}vB}\right)

\theta=sin^{-1}\left(\frac{1.67*10^{-27}*1.5*10^{13}}{1.6*10^{-19}*5*10^{5}*1.17}\right)

\theta=15.52^{\circ}

I hope it helps you!

7 0
3 years ago
If a car travels 30.0 mi. north for 30.0 min., 50.0 mi. east for 1.00 hour, and 30.0 mi. south for 30.0 min., what is the averag
san4es73 [151]
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3rd trip:
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Average speed = (60 + 50 + 60)/3 = 56.7 mph
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Answer: D, Refraction, Reflection, Refraction.

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Hope this helps!
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The______ of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time
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The intensity of a sound wave is defined as the amount of energy passing through a unit area of the wave front in unit of time.
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