A0.400kg particle slides around a horizontal track. the track has a smooth vertical outer wall forming a circle with a radius of 1.50m. the partical is given an initial speed of 8.0m/s. after one revolution, its speed has dropped to 6.0m/s because of friction whith the rough floor of the track. (a) find the energy transformation from mechanical to internal in the system owing to friction in one revolution. (b) calculate the coefficient of kinetic friction. (c) what is the total number of revolutions the partical makes before stopping?

Follow these directions and answer the questions. 1. set up the ripple tank as in previous investigations. 2. bend the rubber tube to form a "concave mirror" and place in the ripple tank. the water level must be below the top of the hose. 3. generate a few straight pulses with the dowel and observe the reflected waves. do the waves focus (come together) upon reflection? can you locate the place where the waves meet? 4. touch the water surface where the waves converged. what happens to the reflected wave? 5. move your finger twice that distance from the hose (2f = c of c, center of the curvature) and touch the water again. does the image (the reflected wave) appear in the same location (c of c)? you may have to experiment before you find the exact location. sometimes it is hard to visualize with the ripple tank because the waves move so quickly. likewise, it is impossible to "see" light waves because they have such small wavelengths and move at the speed of light. however, both are examples of transverse waves and behave in the same way when a parallel wave fronts hit a curved surface.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?