What is the angular distance of the elbow joint during a biceps curl (flexion-extension-flexion)? what is the angular displacement?
a. 290o (assuming rom = 145 o) – 0 o
b. 0 o - 290 o (assuming rom = 145 o)
c. 145 o – 0 o
d. 0 o – 145 o
e. the same

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)

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.