<span>Tectonic plates can either collide or move apart</span>
Answer:
A and B are correct both are correct
Answer:
0.186 N-m
Explanation:
mass of the grindstone,
radius,
Frequency,
time,
final angular velocity,
Initial angular velocity,
Angular acceleration of the grind stone is:
Moment of inertia:
Torque exerted by the ax on the grind stone is:
Answer:
(a)
(b) 157.76679 m
(c) 17.62757 m/s
Explanation:
Net force acting,
Acceleration, where m is the mass
(b)
From kinematic equation
where s is displacement, u is initial velocity, t is time taken and a is acceleration.
Considering that u=0 since it starts at rest
and substituting the value of a as calculated in part a, t is 17.9 s hence
(c
)
From kinematic equation
v=u+at where u and v are initial and final velocities respectively, a is acceleration and t is duration in seconds. Since it starts from rest, u=0 and substituting the value of a as found in part a, t given as 17.9 s we get
V=0+0.984781*17.9=17.62757 m/s
The shape of a liquid can change because the atoms in it are not close together to form a solid, they flow freely.