Jessica stretches her arms out 0.8 m from the center of her body while holding a 2.0 kg mass in each hand. she then spins around on an ice rink at 1.2 m/s.
a. what is the combined angular momentum of the masses?
b. if she pulls her arms in to 0.12 m, what is her new linear speed?

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.