Answer:
Option B is correct.
Explanation:
Given data
Height of the hill = AB = 1 m
Distance traveled along the rough bottom surface = AC = 2 m
Now from the ΔABC
°
We know that the coefficient of kinetic friction is
0.5
This is the value of the coefficient of kinetic friction
Thus option B is correct.
Your question has been heard loud and clear.
An alpha particle , can move in any direction randomly. But with a magnetic field , we can deflect the alpha particle in any direction we want.
So , the magnetic field must be placed to the west of the alpha particle , so that the particle gets deflected and moves towards the north direction.
Thank you.
Answer:
doubles
Explanation:
The relationship between angular speed and linear speed in case of a circular motion is the following:
where
v is the linear speed
is the angular speed
r is the distance from the centre of the circular path
In this proble, the pet hamster moves to a point twice as far from the center; this means that its distance from the centre, r', is doubled:
While the angular speed remains the same. Therefore, the new linear speed is
So, the correct answer is
the linear speed doubles