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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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James Bond is trying to escape his enemy on a speedboat but
SVEN [57.7K]

Answer:

100 m/s

Explanation:

Mass the mass of Bond's boat is m₁. His enemy's boat is twice the mass of Bond's i.e. m₂ = 2 m₁

Initial speed of Bond's boat is 0 as it won't start and remains stationary in the water. The initial speed of enemy's boat is 50 m/s. After the collision, enemy boat is  completely stationary. Let v₁ is speed of bond's boat.

It is the concept of the conservation of momentum. It remains conserved. So,

m_1u_1+m_2u_2=m_1v_1+m_2v_2

Putting all the values, we get :

0+(2m_1)50=m_1v_1+(2m_2)(0)\\\\100m_1=m_1v_1\\\\v_1=100\ m/s

So, Bond's boat is moving with a speed of 100 m/s after the collision.

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4 years ago
Which is the best description of a high pressure system?
ruslelena [56]

Answer:

The Answer is gonna be B.

Air warms and rises.

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3 years ago
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zhenek [66]

Answer:

lol

Explanation:

4 0
3 years ago
Most asteroids are found between the orbits of neptune and uranus ture or false
laila [671]
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3 0
3 years ago
Read 2 more answers
A race car travels 99 m/s around a circular track of radius 52 m. What is the magnitude of the resultant force on the 1900 kg dr
Dmitriy789 [7]

Answer:

Force = 358.11 kN

Explanation:

Resultant force = Centripetal force.

\texttt{Centripetal force, F = }\frac{mv^2}{r}

Mass, m = 1900 kg

Velocity, v = 99 m/s

Radius, r = 52 m

Substituting

            \texttt{Centripetal force, F = }\frac{mv^2}{r}\\\\F=\frac{1900\times 99^2}{52}\\\\F=358113.46N\\\\F=358.11kN

Force = 358.11 kN

         

3 0
4 years ago
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