Use “I Believe in the Also-Rans” (pp. 29–30) to answer questions 26–32. Then fill in the answers on your answer document. What is the author’s purpose for mentioning the children’s race through the house? To illustrate that some children value fun above competition To emphasize that his child is athletically superior to her friends To highlight that children often disregard household rules To show that children lack concerns about safety when competing

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates