At what stage of stellar evolution does a star have a shell of burning material and a non fusing core? A. the giant stage

B. The dwarf stage

C. The protostar stage

D. the supernova stage

E. the main sequel stage

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves