Answer:
500 hours
Explanation:
The sum of total hours over its lifetime will be given by

Where T is total time, r is rate in decimal and To is the original charge hours. Substituting the original charge hours with 5 hours and rate as 0.99 then the time will be

Therefore, the time is equivalent to 500 hours
The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet.
Acceleration = ms^(-1)
= 60/4
=15 ms with the power of -1
Answer:
The box should be placed at a distance of
from the pivot
Explanation:
In order to be in static equilibrium, both Torques have to be the same magnitude, so:
Replacing the formula for Torque:
where X is the distance we need to find.
Solving for X we get:

As we can see, the distance does not depend on the actual value of the mass but on the fact of one being twice as much as the other one.
Answer:
a. 12 m/s² down
Explanation:
Acceleration has units of length per time squared. Acceleration is a vector, so it also has a direction.