Ascientist makes a device to catch baseballs. a long bar of total mass 2.2kg and length 1.2m is fixed at its center. it catches a ball of mass 0.15kg moving at v=16m/s in a box at one of its ends. ignore the mass of the catcher box for this problem. what is the angular velocity of the system after the ball is caught?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?