Answer:
The force on the book is 250N.
Step-by-step explanation:
Newton's second law states that the equation for the force is:

In which m is the mass, in kilograms, and a is the acceleration, in m/s². F is the force measured in N.
In this question:

So

The force on the book is 250N.
H is equal to 8
M is equal to 15.3
20-12= 8
9+6.3= 15.3
Hope this helped
Answer:
314 in
Step-by-step explanation:
The area of a circle is pi* r^2
If the radius is 10, then it is
pi* 10^2= 100pi
100*3.14 is around 314.16, using 3.14 for Pi it will be 314
Answer:
Step-by-step explanation:
1.3 x 10^-5
0.000013
answer is B