Answer: Positive.
Explanation:
Given that the ion has a charge of +3.2 x 10^14 C.
When another charge is brought near it, it experiences a repulsive electrostatic force. The other charge brought near the ion must be positive.
This is because the electric field which is a region of space created by the positive ion with a charge of +3.2 x 1014 C have electric lines of force moving outward. Therefore, when another charge is brought near the positive ion, it will either attract or repel depending on the charge of the ion brought into the electric field created by the positive ion.
If the charge on the second ion is also positive, the electric lines of force will be in the same direction as that on the first ion and will their repel. However, if the second ion is negative, the electric field lines are in the opposite direction to that of the first positive ion, thereby creating an attractive electrostatic force in the electric field.
In summary, like charges repel, unlike charges attract.
Answer:
F=75.53N
Explanation:
To calculate the power we define the equation,
Where,
F= Force
V= Velocity,
Here we have that 2.43hp is equal to 1812.78W,
clearing F,
Answer:
Explanation:
Given
Potential Energy of a particle is given by
For minimum or maximum Potential Energy differentiate U(x) w.r.t x
putting
To know minimum value check
at x=-2
so at x=-2 potential energy is minimum
Answer:
Explanation:
given,
motion of polar bear
1.0 km south ; 1.0 km east ; 1.0 km north ; 1.0 km west
total time of the trip = 45 min
t = 0.75 hr
total distance travel by bear = 1 + 1 + 1 + 1 = 4 km
average speed of the bear = ?
hence, the average speed of the car is equal to 5.33 Km/h