A runner moving at a velocity of 6 m/s increases the velocity in a 2 s time interval to a rate of 10 m/s. What is the rate of acceleration?
A. 4 m/s2
B. 4 m/s
C. 2 m/s2
D. -2 m/s
C. 2 m/s2
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The ________ does not belong to the femur.
A. anterior border B. lesser trochanter C. greater trochanter D. medial condyle E. fovea capitis
While standing, if you bend at the waist to touch your toes, which muscle would you use to stand back up straight again?
A. Erector spinae B. Sternocleidomastoid C. Rectus abdominis D. External oblique E. Rectus femoris
It may take nearly a half hour for rods of the retina to regenerate a full supply of photopigment during the process of
A. dark adaptation. B. light adaptation. C. lateral inhibition. D. opsinization.
In the phospholipase C mechanism, most of the increased intracellular calcium comes from ________.
A. within the plasma membrane B. extracellular fluid C. the endoplasmic reticulum D. outside the cell