Answer:
It includes earthwork, trenching, wall shafts, tunneling and underground
Explanation:
E, 63% of the value. I forget the rationale behind it but I learnt that in engineering. 90% confident for that answer.
Friction between the ball and the floor is stealing some of the kinetic energy of the ball, and turning it into heat.
Answer:
0.54454
104.00902 N
Explanation:
m = Mass of wheel = 100 kg
r = Radius = 0.52 m
t = Time taken = 6 seconds
= Final angular velocity
= Initial angular velocity
= Angular acceleration
Mass of inertia is given by

Angular acceleration is given by

Equation of rotational motion

The coefficient of friction is 0.54454
At r = 0.25 m

The force needed to stop the wheel is 104.00902 N
Answer:
The atoms are aligned in a particular direction
Explanation:
The atoms become aligned in a particular direction in regions called domains, thus resulting in an overall resultant magnetism due to the spin of the electrons.