5. Why does having low levels of glucose or oxygen in his cells make it difficult for David to walk up steps? Which body systems should the doctor test in order to find out whether David's
cells are getting enough oxygen and glucose and why?
I need help ASAP

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature

Why are graphs useful when interpreting data

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.