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emmainna [20.7K]
3 years ago
13

Which changes will decrease the electric force between two positively charged objects? Check all that apply.

Physics
2 answers:
zaharov [31]3 years ago
8 0

Answer:

Moving them farther apart

Explanation:

The electric field between the two charges Q and q separated by a distance r is given by

E = \frac{K\times Q\times q}{r^{2}}

It shows that the electric field is inversely proportional to the square of the distance between two charges.

So, as the distance between two charges increases, the electric filed between the two charges decreases.

GaryK [48]3 years ago
8 0

Answer:

1. moving them farther apart

2. Adding electrons

Explanation:

The electric force between two positively charged particle is given by :

F=\dfrac{kq_1q_2}{r^2}

Where

k is the electrostatic constant

r is the distance between charges

The electric force is inversely proportional to the distance between them. So, the electric force between two positively charged objects will decrease when the charged particles move father apart. Also, on adding electrons, the magnitude of charges will decrease.

Hence, the correct options are (b) and (c).

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The instantaneous speed of a particle moving along one straight line is v(t) = ate−6t, where the speed v is measured in meters p
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Answer:

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Explanation:

You have the following equation for the instantaneous speed of a particle:

v(t)=ate^{-6t}   (1)

To find the expression for the maximum speed in terms of the acceleration "a", you first derivative v(t) respect to time t:

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where you have use the derivative of a product.

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<em>ex. Examples of scientific theories are gravitation, evolution, and plate tectonics. </em>

Hypothesis: A hypothesis is a theory or question that can be tested through study and experimentation. It has more reasoning to it than a simple guess, but not enough information to be a theory.

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