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2 years ago

Can someone please help me with part a and d

Physics

2 answers:

Temka [501]2 years ago

7 0

Answer: question D is trough

Explanation: I learned this already

Semenov [28]2 years ago

4 0

Answer:

'a' is the crest while 'd' is the trough

Explanation:

'a' is the crest of the wave and it is defined as the maximum displacement of a wave from its initial position. The value of crest is a positive amplitude.

'd' is known as the trough and is the defined as the minimum displacement of an object from its initial position to produce a wave motion.

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To solve this problem we will apply the concepts related to the Electrostatic Force given by Coulomb's law. This force can be mathematically described as

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Here

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Our values are given as,

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b) As the force exerted on $q_2$ will be equal to that act on $q_1$ ,

$F_{21} = F_{12}$

$F_{21} = 54 mN$

Force is positive i.e. repulsive

c) If $q_2 = -6 \mu C$ , a negative sign will be introduced into the expression above i.e.

$F_{12} = \frac{(9*10^9 Nm^2/C^2)(1*10^{-6} C)(-6*10^{-6} C)}{(1 m)^{2}}$

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Answer:

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Explanation:

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