Aball that has a mass of 0.25 kg spins in a circle at the end of a 1.6 m rope the ball moves at a tangential speed of 12.2 m/s
what is the centripetal force acting on the ball
a. 1.9n
b 23n
c 59n
d 93n

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Atomic nuclei of almost all elements consist of

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.