Consider a child who is swinging. As she reaches the lowest point in her swing:
a. the tension in the rope is equal to her weight.
b. the tension in the rope is equal to her mass times her acceleration.
c. her acceleration is downward at 9.8 m/s2.
d. none of the above.
Question 2
A roller coaster, loaded with passengers, has a mass of 3000 kg; the radius of curvature of the track at the bottom point of the dip is 24 m. If the vehicle has a speed of 18 m/s at this point, what force is exerted on the vehicle by the track? (g = 9.8 m/s2)
a. 2.3 104 N
c. 7.0 104 N
b. 4.7 104 N
d. 1.0 104 N
Evaluation of a child for cystic fibrosis with a sweat chloride test. Sweat is being collected under
Enamel defects due to malnutrition in a child from the Illinois valley (A.D. 600-1200).
Giotto, Madonna and Child Enthroned.
Use of a hand tool to apply pressure to a trigger point.
Child Development: Principles and Perspectives
Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1