Answer:
The coefficient of kinetic friction is 0.51.
Explanation:
Given that,
Applied force, F = 75 N
Mass of a box, m = 15 kg
The acceleration of the box is 3 m/s²
We need to find the coefficient of kinetic friction. It is given by the formula as follows :

Where,
, is the normal force

So, the coefficient of kinetic friction is 0.51.
Knowing the force and distance allows you to calculate the work done.
Then, if you know the TIME, you can calculate the power.
Answer:
c. a and c
Explanation:
ammeters are connected in series to measure charge/current
Answer:

Explanation:
Given that,
The radius of a flywheel, r = 0.3 m
Angular acceleration of a flywheel, 
We need to find the magnitude of the tangential acceleration after 2.00 s of acceleration.
The relation between the tangential and angular acceleration is given by :

So, the required magnitude of tangential acceleration is
.