Afinite line of charge with linear charge density =2.75×10−6 c/mλ=2.75×10−6 c/m and length =0.654 ml=0.654 m is located along the xx ‑axis (from x=0x=0 to x==l). a point charge of =−6.00×10−7 cq=−6.00×10−7 c is located at the point x0=1.84 m, x0=1.84 m, y0=4.50 m. y0=4.50 m. find the electric field (magnitude and direction as measured from the +x+x ‑axis) at the point p, which is located along the xx ‑axis at xp=10.30 m

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2