Answer:28 m
Explanation:
Given
Direction is
North of east i.e.
with x axis
Also ball moved by 33 m
therefore its east component is 33cos58=17.48 m
Northward component 
Answer:

Explanation:
The centripetal force acting on the car must be equal to mv²/R, where m is the mass of the car, v its speed and R the radius of the curve. Since the only force acting on the car that is in the direction of the center of the circle is the frictional force, we have by the Newton's Second Law:

But we know that:

And the normal force is given by the sum of the forces in the vertical direction:

Finally, we have:

So, the minimum value for the coefficient of friction is 0.27.
C is incorrect because the atomic number and symbol are the only ones displayed.
I think it could be A but it is most likely C
Hope it helps!!
The answer is nodes because nodes stay in a fixed position and i just learnt about this!
The answer is either B or C