Explanation:
A positive point charge Q is fixed on a very large horizontal friction less tabletop. A second positive point charge q is released from rest near the stationary charge and is free to move.
As per the law of conservation of energy the change in kinetic energy is equal to the change in potential energy.
The mathematical expression for the conservation of energy is given by :
On solving the above equation, we get the value of v as :
In the above expression, as the term increase, as increases, the value of decreases. So, the correct option is (B) "As it moves farther and farther from Q, its speed will increase".
Answer:
The sled needed a distance of 92.22 m and a time of 1.40 s to stop.
Explanation:
The relationship between velocities and time is described by this equation: , where is the final velocity, is the initial velocity, the acceleration, and is the time during such acceleration is applied.
Solving the equation for the time, and applying to the case: , where because the sled is totally stopped, is the velocity of the sled before braking and, is negative because the deceleration applied by the brakes.
In the other hand, the equation that describes the distance in term of velocities and acceleration:, where is the distance traveled, is the initial velocity, the time of the process and, is the acceleration of the process.
Then for this case the relationship becomes: .
<u>Note that the acceleration is negative because is a braking process.</u>
Distance covered along the slope is 48 m
Explanation:
A uniform motion is a motion in which the velocity is constant. The distance covered by an object during a uniform motion is given by
where
v is the velocity
t is the time
Here we have:
v = 0.8 m/s (velocity)
t = 1 min = 60 s
Therefore, the distance covered along the slope is:
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Answer:
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Answer:
Here we go!
Explanation:
if an object is traveling in such a way that it covers the same distance for each interval of time it is traveling, then it is said to be traveling with uniform speed.
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