Answer:
115911.09915 J
Unchanged
Decreased
Explanation:
m = Mass of motorcycle = 180 kg
v = Velocity of motorcycle = 9 m/s
F = Force = 400 N
s = Displacement = 300 m
= Angle above the horizontal = 15°
Work done is given by
The work done is 115911.09915 J
It can be seen that the force applied is constant so it does not matter if the speed of the motorcycle changes.
Tension on the rope would be
Work done
So, the work done would be reduced.
Answer:
Refractive index of liquid C > Refractive index of liquid B > Refractive index of liquid A
Explanation:
Let the depth of each section is h.
That means the real depth for each section is h.
Apparent depth is liquid A is 7 cm.
Apparent depth in liquid B is 6 cm.
Apparent depth in liquid C is 5 cm.
by the formula of the refractive index
n = real depth / apparent depth
where, n is the refractive index of the liquid.
For liquid A:
.... (1)
For liquid B:
..... (2)
For liquid C:
..... (3)
By comparing all the three equations
nc > nB > nA
Refractive index of liquid C > Refractive index of liquid B > Refractive index of liquid A