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NASA puts a satellite into space that consists of two small 32-kg balls connected by a 12-m long light cable, as shown in the figure. The entire system is initially rotating at 4.0 rpm about an axis perpendicular to the cable at the center of mass. Motors in each mass reel out more cable so that the masses double their separation to 24 m.
(a) What is the final rotational speed (in rpm) of the balls?
(b) If the initial rotational kinetic energy of the system was K, what is the final rotational kinetic energy in terms of K?
Cytokines
Small proteins released by cells that have a specific effect on the interactions and communications between cells or on the behavior of cells.
White Blood Cell
Leukocyte, of which there are several types, each having a specific function in protecting the body from invasion by foreign substances and organisms.
Universal Donor
A term often associated with blood type O negative, referring to individuals whose red blood cells can be transfused into persons of any other blood type without causing an adverse reaction.
Blood Type
The classification of human blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells.
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