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spayn [35]
4 years ago
12

Consider four objects: A, B, C, and D. If A is negatively charged and B and C attract A but repel each other, what is the charge

on B and C?
A. Both B and C are positively charged.

B. Both B and C are negatively charged.

C. B is positively charged and C is negatively charged.

D. B is negatively charged and C is positively charged.

E. Both B and C have no charge.
Physics
2 answers:
mote1985 [20]4 years ago
8 0
A Both b and c are positivly charged
kykrilka [37]4 years ago
4 0

Answer: The correct answer is "Both B and C are positively charged".

Explanation:

Same charges repel each other. There is an electrostatic force of repulsion between the same charges.

Unlike charges attract each other. There is an electrostatic force of attraction between the opposite charges.

In the given problem, consider four objects: A, B, C, and D. If A is negatively charged and B and C attract A but repel each other.

In the given question, B and C repel each other. It means that both B and C have same charge. A is negatively charged. Then, B and C have positive charge. As B and C attract A. Both B and C are positively charged.

Therefore, the option (B) is correct.

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When an object is moving with uniform circular motion, the centripetal acceleration of the object a. is circular. b. is perpendi
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5 0
3 years ago
A particle of charge of +3.40 ✕ 10−6 C is 17.5 cm distant from a second particle of charge of −2.00 ✕ 10−6 C. Calculate the magn
Karolina [17]

Answer:

0.47 N

Explanation:

q1 = 3.4 x 10^-6 C

q2 = 2 x 10^-6 C

d = 17.5 cm = 0.175 m

The electrostatic force is given by

F=\frac{Kq_{1}q_{2}}{d^{2}}

F=\frac{9\times10^{9}\times3.4\times 10^{-6}\times 2\times 10^{-6}}{0.175\times 0.175}

F = 0.47 N

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5 0
3 years ago
Determine the focal length of a plano-concave lens (refractive index n =1.5) with 24 cm radius of curvature on its curve surface
tatyana61 [14]

Answer:

Option 3: -48 cm

Explanation:

We are given:

refractive index; n = 1.5

radius of curvature; r2 = 24 cm

Formula for the focal length is given as;

1/f = (n - 1) × [(1/r1) - (1/r2)]

As r1 tends to infinity, 1/r1 = 0

Thus,we now have;

1/f = (n - 1) × (-1/r2)

Plugging in the relevant values;

1/f = (1.5 - 1) × (-1/24)

1/f = -0.02083333333

f = -1/0.02083333333

f = -48 cm

3 0
3 years ago
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