If a jar wrench whose handle extends 17 cm from the center of the jar is attached to the lid, what is the minimum force required to open the jar?

41.5 N

Step-by-step explanation:

Torque is given by:

τ = rF

Solved for force:

F = τ / r

The value of r is the distance from the end of the wrench to the center of the lid, which is:

r = (0.089m / 2) + 0.17m

= 0.2145m

Therefore:

F  = 8.9N∙m / 0.2145m

= 41.5N

it reflected because of the glass maube

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.