<span>the majority party................</span>
Explanation:
Image distance, v = -17 cm (-ve for virtual image)
Radius of curvature of concave mirror, R = 39 cm
Focal length, f = -19.5 cm (-ve for a concave mirror)
(a) Using mirror's formula as :


u = 132.6 cm
So, the object is placed 132.6 cm in front of the mirror.
(b) Magnification of the mirror, 

m = -0.128
Hence, this is the required solution.
Explanation:
The rate of doing work is defined as power
In mathematical expression
P=W/t
P is power W is work done and t is time taken
To solve this problem we will apply the concepts related to the centripetal force, for which it is necessary to equate it with the static friction force of the body. From this, we will clear the speed and replace with the given values. Our values are defined as,



Maximum velocity can be find out using centripetal force,

Must be equal to,




Therefore the maximum speed that he can travel through the arc without slipping is 9.93m/s