For the part a) we need only the momentum of the box and we have the data to find it.
Momentum is given by,
where clearly, p is the momentum, m the mass of the box and v is the velocity.
Substituting,
For part b) we need an analysis of the situation. We understand that the box on a surface that has no friction will continue to rotate at the same speed previously defined. The box can only stop with friction, so,
<em>It is the same that part a)</em>
The microgram is the greater mass. It takes 1,000 nanograms to make just one. One microgram is 999 nanograms bigger than one nanogram.
this is the best answer for you
When two objects collide there will be a force acting on them both and their individual kinetic energies and momenta may alter. As you know already, energy is always conserved but in a collision some, or all of the kinetic energy may be ... of the same mass and traveling at the same speed but in opposite directions collided ...
Answer:
0.35701 T
Explanation:
= Initial magnetic field
= Final magnetic field
= Magnetic flux
t = Time taken = 4.17 ms
N = Number of turns = 510
= Induced emf = 10000 V
r = Radius = 0.27 m
A = Area = 
Induced emf is given by
The magnetic field strength needed is 0.35701 T
