As a car heads down a highway traveling at a speed v away from a ground observer, which of the following statements are true abo
1 answer:
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Answer:4.22 J
Explanation:
Given
mass of pitcher
Force applied
distance moved
Applying work-Energy theorem which states that work done by all the forces is equal to the change in kinetic energy of the object
Work done by force
W=
change in kinetic Energy =
K.E.-0=
K.E.=
(a) The tension on the wire when the two charges have opposite signs is 383.5 N.
(b) The tension on the wire if both charges were negative is 3.640.25 N.
The given parameters;
- <em>first charge, q₁ = 8.75 μC </em>
- <em>second charge, q₂ = -6.5 μC </em>
- <em>electric field, E = 1.85 x 10⁸ N/C</em>
- <em>distance between the two charges, r = 2.5 cm</em>
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(a)
The attractive force between the charges is calculated as follows;
The force on the negative charge due to the electric field is calculated as follows;
The tension on the wire is the resultant of the two forces and it is calculated as follows;
(b) when the two charges are negative
The repulsive force between the two charges is calculated as follows;
The force on the first negative charge due to the electric field is calculated as follows;
The force on the second negative charge due to the electric field is calculated as follows;
The tension on the wire is the resultant of the three forces and it is calculated as follows;
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