Number 6 please

28  a) 5.21  B) 2.15  NS) 4.03  D) 3.74  TO) 2.75

е. f. Ball moving at constant speed in a vertical circle at the end of a string. Ball moving at constant speed in a vertical circle at the end of a string.

choose all that apply to centripetal force.   A. twice the radius needs half the centripetal force. x   B. Gravitational and electrical forces can produce centripetal forces.   C. Twice the speed needs four times the centripetal force.   D. Centripetal force depends on the mass, tangential speed and radius of the curvature.   E. Centripetal force depends on tangential spreed and radius of curvature .   F. Measured in the units of N or kg m/s^2   G. Any type of force directed towards a fixed center. I chose everything except answer E and got it wrong.

Please help    a car travelling North turns and then goes west. What direction was the ac

21- Which are incorrect for the K, L and M vectors given in the figure? A) Only I B) Only II C) Only III D) I and III E) II and III

1,2,3

1. A force is given as Ẻ = xy² x + (x²y + y) ŷ. Calculate § F. dỉ along the circumference of a circle of radius 3.

I need help with this question

In Exercises 23 and 24, 0opy veotors u, v, and w head to tail as needed to sketoh the indicated veotor. 23. a. u + v с. и - у b. u + v + w d.u - w